Sewing Machine Repair TNT. A Collection Of Tips And Techniques For Sewing Machine Repair. Dr. David Trumble

Sewing Machine Repair TNT A Collection Of Tips And Techniques For Sewing Machine Repair By Dr. David Trumble Sewing Machine Repair TNT A Collection...
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Sewing Machine Repair TNT A Collection Of Tips And Techniques For Sewing Machine Repair

By Dr. David Trumble

Sewing Machine Repair TNT A Collection Of Tips And Techniques For Sewing Machine Repair All Rights Reserved © 2008 By Dr. David Trumble And Sewing Answers

Introduction I have titled this ebook, Sewing Machine Repair TNT because it includes dozens of tips and techniques to simplify and accelerate your sewing machine repair education. The following articles are designed to empower you to do your own sewing machine repair and maintenance. These tips, tricks, and basics identify the most common sewing machine maintenance and repair concerns. When coupled with the much more extensive resources available at http://www.fixsewingmachines.com, you can have confidence that you have the essentials for your own sewing machine repair.

Resources You Need Sewing Machine Repair Secrets Course My Magnificent Sewing Machine Sewing Machine Repair Manuals

Antique Sewing Machine Repair Course Antique Sewing Machine Repair Glimpse Of Sewing Yesteryear

Sewing Machine Tune Up Sewing Machine Tune Up Audio Sewing Machine Tune Up Forms

Sewing Machine Repair Business Courses How To Sell Sewing Machines Your Own Sewing Machine Repair Business My Own Sewing Machine Store

Complete Sewing Machine Repair Library With Over 18 Ebooks & Tools

TABLE OF CONTENTS WHY YOU WANT A FULL SERVICE EVERY TIME NOT A QUICK FIX HOW TO SERVICE YOUR OWN SEWING MACHINE SEWING MACHINE REPAIRS. ANTIQUE SEWING MACHINE REPAIR. DIY SEWING MACHINE REPAIRS. HOW TO THREAD A SEWING MACHINE. SEWING MACHINE POWER. HOW TO ADJUST TENSIONS ON A SEWING MACHINE. SEWING ADJUST BOBBIN TENSION. HOW TO BALANCE TENSIONS ON A SEWING MACHINE. HOW TO ADJUST SEWING MACHINE STITCHES? FIX MY SEWING MACHINE PEDAL. HOW TO REPAIR A SEWING MACHINE CORD.

ADJUST NEEDLE BAR HEIGHT ON YOUR SEWING MACHINE. HOW TO ADJUST SEWING MACHINE TIMING. UNDERSTANDING SEWING MACHINE HOOK SYSTEMS. HOW TO ADJUST OSCILLATING HOOK TIMING. HOW TO ADJUST ROTARY HOOK TIMING. SEWING MACHINE FEED SYSTEM.

Why You Want A Full Service Every Time Not A Quick Fix Do not confuse repair with maintenance. While maintenance keeps the machine operating properly under normal conditions, there are times when repair or fixing real problems is needed. A quick fix is a waste of dollars and time. By quick fix, we mean having only a specific problem repaired. Yes, it does cost less than a full service at the moment. Yes, it does take less time to do if you are doing it yourself. But it always costs more in the long run. It shortens the life of your sewing machine, has no warranty on the repair, and leaves the machine prone to continued problems down the line. Nothing is more frustrating to a sewing machine technician that to have a machine returned after just a few days because other problems have popped up or the same problem came back. What you really want (almost every time your sewing machine is messing up) is a Full Service. By Full Service or Standard Service we mean a complete servicing of the sewing machine. All the covers are removed. All the old gunk, grease, grime, debris, and junk are removed. The machine is thoroughly and properly lubricated. All potential problems with the machine are examined, diagnosed, and resolved. A 49 point detailed operational check is done. The machine is reassembled and thoroughly tested to insure it will sew as close to new as possible for many months to come. Why pay for a Full Service?

Why spend the extra time to do a Full Service when you might get by with a quick fix? If you understand, that 90% of all problems with your sewing machine result from accumulation of lint, dust, debris, old deteriorating oils and grease, why would you ever consider a repair that did not solve these issues? The Full Service at your local sewing machine repair center comes with an amazing limited labor warranty. Quick fixes usually come only with frustrations. If you are doing your own sewing machine repair, it only takes about half an hour to do the complete job. But then you know the sewing machine will operate properly for hours and hours, days and day. It just makes sense to always request a Full Service, when you sewing machine needs repair. Always do a full service.

HOW TO SERVICE YOUR OWN SEWING MACHINE How to service your own sewing machine How often do you change the oil in your car? Every three months whether it needs it or not? Every three thousand miles? What would you suppose would happen if you decided not to have your car serviced for 100,000 miles or may every ten years? Whatever happens in your car in terms of wear and performance, happens in your sewing machine. The current recommendation is that your sewing machine should be professionally serviced once a year even if the machine sits in a closet all year long. If you use your machine for embroidery, it should be serviced ever 1,000,000 stitches. If you do a lot of sewing with linty fabrics, you need to have your machine serviced more frequently. If you use your sewing machine professionally, it will require more frequent sewing machine service. The average charge for a standard sewing machine service nationally runs $99.00. Depending on where you live you will find charges running between $79.95 and $129.95. If you need your sewing machine serviced several times a year, the costs can be huge. One solution is to service your own sewing machine. If this sounds overwhelming, relax. You can learn to service your own sewing machine quickly and easily. It is not extremely complicated. Yes, there are possible repairs that would be beyond your reach at the beginning. You can learn how to service your own sewing machine. Here are a few simple steps that you can do in just a few minutes that will keep your sewing machine operating at peak performance for years.

Step one: Change your needle frequently. Change it every other project or every three to four sewing hours. Step two: Use only quality threads. Avoid linty cotton covered polyester threads, hand quilting threads, and old threads. Use long fiber or long staple 100% polyester, cotton, or silk threads. Step three: Keep your sewing machine away from direct sunlight, high moisture area, highly variable temperatures, and dust. Keep your sewing machine clean, dry, and protected from extreme temperatures. Frequently clean the surfaces of the sewing machine with moist cloth only. Step four: After ever two hours of sewing, uncover the bobbin area. Remove the bobbin. Use canned air (upright only), sewing machine vacuum, or air compressor to remove all lint and debris from the bobbin area. Step five: Place one drop of pure clean sewing machine oil along the hook race every two to three hours. Remove the bobbin area cover. Remove the bobbin. Remove the bobbin carrier. If there is a bracket over the hook, remove it. Notice the hook moves along a groove called the race. Drop one drop of oil on to the race. The movement of the hook will spread the oil. Replace all parts previously removed. Step six: Every two to three hours, open the cover over the needle take up lever. Some sewing machine models have doors that open at the touch of a finger. Some have a cover held in place by a single screw. Once the area is exposed, blow out or clean out all lint and gunk that may have collected in the area. Look closely around the needle bar and the various shafts and parts for threads and debris. Remove them. Step seven: While the needle bar area is exposed, place one drop of pure clean sewing machine oil everywhere that metal parts touch. Rotate the hand wheel forward to spread the oil over the various parts.

This completes the basic consumer home service. Diligently perform this seven step home service, and you will significantly prolong the life of their sewing machine. The sewing machine will also operate more smoothly and dependably for many years. You can also learn to do your own sewing machine repair. While this can be a bit more involved the resources at http://www.fixsewingmachines.com can empower you to do wonders.

Sewing Machine Repairs. Do you own a sewing machine? Then you know how important it is. You need a good reliable source for sewing machine repairs. Professional Sewing Machine Repairs Secrets are essential. They keep your sewing machine operating at peak performance. It can be very frustrating. Sit down to a broken sewing machine. It feels bad enough to pull hair out. You have a right to get upset. You discover the sewing machine will just not stitch. The stitches may look wobbly. The stitch you select is may not be what sews on the fabric. Thread may bunches up under the fabric. On top the seam, it may look great. But when you look underneath, you may see gobs and gobs of thread. The sewing machine is a magnificent machine, but it is a machine. When it is not working, it feels like an earthquake is shaking your world. Do you use your sewing machine for five to ten hours per week? Then you will require Sewing Machine Repairs at least once per year. On the other hand, do you let your sewing machine sit in a closet for a year or two at a time? You will need Sewing Machine Repairs before you even start sewing your next project. Obviously, if you sew professionally, you will need more frequent Sewing Machine Repairs. Do you sew more than twenty hours per week? If so, you will need Sewing Machine Repairs every six months or so. There are a wide range of variables that affect the frequency of your need for Sewing Machine Repairs. Remember, without good Sewing Machine Repairs, your sewing machine will eventually stop operating properly. Where can you find Sewing Machine Repairs? Sewing Machine Repairs may be found several ways. You can look in the yellow pages under Sewing Machine Repairs. You should see listings there of Sewing Machine Repairs Shops. Often you can find Sewing Machine Repairs Shops at your independent sewing machine dealer. Some sewing machine stores have special set ins at larger Hancock Fabrics or Jo Ann Fabrics. Often fabric stores and quilt shops offer drop off services. You may also find listings of Sewing Machine Repairs Shops in the classified ad section of your local newspaper. How would you like to be able to do your own Sewing Machine Repairs? You might consider purchasing a Sewing Machine Repairs Course. "My Magnificent Sewing Machine" is exactly what you need. These Sewing Machine Repairs Courses are designed to provide easy reading instructions. These courses will even give you a solid foundation for a professional Sewing Machine Repairs career.

What kind of Sewing Machine Repairs should you anticipate?

Most Sewing Machine Repairs Shops offer a Standard Service. • This service begins with a quick inspection of the sewing machine functions to identify any obvious problem areas. • Then Sewing Machine Repairs technician removes the sewing machine covers. • He uses a compressor or vacuum. • He removes all the old lint and gunk from inside the machine. • He uses special chemicals to dissolve and remove old grease. • He uses special chemicals to dissolve and remove oils. • He uses special chemicals to dissolve and remove sticky junk from the machine. • While the machine is open, the technician does a thorough inspection. • He checks all of the working parts looking for broken or badly worn parts. • He replaces any problem parts. He makes the appropriate adjustments. • Then the cases are replaced. • Finally, the Sewing Machine Repairs technician completes a detailed testing of the sewing machine. • He checks functions. • He checks stitching. • He checks tensions. • He checks balance. • And he checks timings. • In all there are typically, forty five to fifty specific items on the sewing machine inspected and adjustments made. It is important to find your professional Sewing Machine Repairs technician before you actually need him or her. Then you will feel comfortable leaving your sewing machine for Sewing Machine Repairs.

 

 

Antique Sewing Machine Repair. Antique Sewing Machine Repair has two basic parts. First, Antique Sewing Machine Repair involves maintanence. The mechanical parts of the sewing machine must work properly. Second, Antique Sewing Machine involves refurbishing. The cosmetic looks of the antique sewing machine are very important. Antique Sewing Machine Repair is repair of mechanical sewing machines.

These machines predate the modern computerized sewing machines. They predate the electronic control systems. They predate pulse motors. They predate circuit boards. They predate integrated circuits. These antique sewing machines use wheels, levers, and gears to sew. The drive mechanism may be a hand crank. It may be a treadle system. It may be an early electrified AC motor drive.

The antique sewing machines often use foot or hand power. The drive system turns an upper shaft. The shaft runs from the hand wheel to the needle bar. The hand wheel is on the far right of the sewing machine. The shaft turns the needle bar. The needle bar assembly is on the far left of the sewing machine. This upper shaft moves the needle bar up and down. The upper shaft also uses a lever or belt system. It transfers the power down to the lower sewing machine shaft. The lever or belt turns the lower shaft. This movement must be timed. It must work perfectly with the upper shaft. The lower shaft turns. This causes the hook and feed dogs to turn in time with the needle bar.

Antique Sewing Machine Repair requires maintenance. The same basic services are used as other mechanical sewing machine. Antique Sewing Machine Repair maintains good mechanical operations. Antique Sewing Machine Repair requires overcoming the ravages of age. Avoid exposure to weather. Avoid exposure to rust. Avoid exposure to decay. Lubricate and maintain the antique sewing machine. The sewing machine must be clean. Clear away the lint. Clear away the debris. Clear away old oils. Clear away crystallized grease. Properly lubricate antique sewing machines. Dissolve Rust deposits on the inside and out. Brush away rust. Maintain a smooth operating machine. Properly set Tensions. Properly set Hook needle timing. Properly set Feed dog timing. The way the antique sewing machine looks is vital. Every effort must be made to preserve the looks of the antique sewing machine. This is a major part of Antique Sewing Machine Repair. Antique Sewing Machine Repair requires specialized knowledge. Antique Sewing Machine Repair requires special techniques. Many of today's chemicals cannot be used. Antique Sewing Machine Repair takes special care. Many of today's techniques cannot be used in Antique Sewing Machine Repair. Antique sewing machine repair requires special care mechanically and aesthetically. For example, the sewing machine technician cleans the outside of most sewing machine. He uses household cleaners like 401 and Windex. In Antique Sewing Machine Repair these cleaners interact with the enamel paint. They destroy the antique finish. Many of the antiques have gold or silver leaf decoration on the machine. The combination of the enameled paint and decorative leaf are vulnerable to the modern chemical cleaners. An amateur sewing machine mechanic, may unknowingly ruin the finish. It only takes seconds to apply destructive chemicals. It only takes seconds to destroy antique surfaces. The Antique Sewing Machine Repair person understands. He knows how to clean the antique sewing machine without destroying the surfaces. Some technicians may even apply new decorative leaf.

There is some debate of this practice. possible.

Some want the greatest beauty

Others believe antiques retain their highest value when unaltered. Adding decorative leaf or repainting the surface some say degrades the value of the antique. Usually, the goal of the Antique Sewing Machine Repair Technician is to refresh the machine without altering its original character. Among the best cleansers is pure clean sewing machine oil. Use the oil to clean the enamel painted cast iron. Oil cleanses and refreshes the sewing machine. This is the same oil used to lubricate sewing machines. Antique Sewing Machine Repair often means dealing with rust or pitting. The decay must be stopped. This may involve using other special chemicals. The experienced Antique Sewing Machine Repair man will know what to use. This may involve smoothing with steel wool or brush. This may involve special enamel paints to compliment the original finish of the machine.  

 

DIY Sewing Machine Repairs. Discover DIY Sewing Machine Repairs For Yourself. What if you could learn  DIY Sewing Machine Repairs?  What if you could actually do DIY Sewing Machine Repairs? What if you could learn all about sewing machines and how sewing machines work? What if you could find DIY Sewing Machine Repairs resources? Now you can! Now you can learn DIY Sewing Machine Repairs.  You can learn DIY Sewing Machine Repairs in  the comfort of your own home.  That is right. 

There  are  several  great  sewing  machine  repair  courses  available  to  reveal  the  secrets  of  DIY  Sewing  Machine  Repairs.   These  DIY  Sewing  Machine  Repairs  courses  are  designed  to  be  thorough, practical, and easy to learn in your own home. You will see hundreds of  vivid pictures revealing all the basics of sewing machine repair.  Your  Sewing  Machine  Repairs  Courses  cover  a  wide  range  of  DIY  Sewing  Machine  Repairs  topics.   Discover the sewing machine a marvel of ingenuity.  Understand how a sewing machine works.   Grasp  the  essentials  of  DIY  sewing  machine  repairs.   Differentiate  between  mechanical  and  electronic sewing machines.  Find out how sewing machines, sergers, and embroidery machines  are similar and different. 

These  DIY  sewing  machine  repairs  courses  reveal  the  multitude  of  sewing  machine  systems.   They reveal the drive systems.  They reveal the stitch selection systems.  They reveal the feed  systems.  They reveal the stitch formation system.  DIY sewing machine repairs courses reveal  the full range of sewing machine mechanical and electronic systems. DIY  Sewing  Machine  Repairs  courses   teach  proper  threading.   They  teach  the  concepts  of  sewing  machine  tensions.   They  teach  how  to  disassemble  sewing  machines.   DIY  Sewing  Machine Repairs courses show you how. Discover  how  to  make  the  ten  critical  sewing  machines  adjustments.   Find  out  how  to  adjust  needle bar height.  Find out how to adjust needle position and centering.  Learn how to adjust  presser bar pressure, height, and angle.  Learn how to adjust feed dogs.  Learn how to adjust  feed dog height and swing.  Learn how to adjust hook needle timing.

You will know how to adjust upper tensions.  You will know how to set bobbin tensions.  You  will understand hook – needle timing.  You will have the knowledge to do DIY sewing machine  repairs. DIY  Sewing  Machine  Repairs  courses  reveal  the  secrets  of  sewing  machine  repair.   Discover   how  to  fix  a  sewing  machine  that  is  “dead  head  stuck”.   DIY  sewing  machine  repairs  courses  teach you how to properly clean and maintain sewing machines.  They teach you how to make  the ten most common sewing machine repair problems.  You will learn how to fix them.  You  will learn to repair and replace sewing machine parts. DIY Sewing Machine Repairs courses provide a wide range of sewing machine repair resources.    The  reveal  where  to  find  parts.   They  reveal  how  to  promote  your  sewing  machine  repair  business.  They even show how you can open your own sewing machine store.  They give you   the phone numbers, email addresses, and contact information you need. When you complete your DIY Sewing Machine Repairs courses, you will have confidence.  You  will be able to do your own sewing machine repair.  You will have many resources to build your 

own sewing machine repair business.  You will find a fresh vision of the sewing machine repair  and sales business.  

 

How To Thread A Sewing Machine. Knowing How To Thread A Sewing Machine if crucial to all sewing.

Without thread there is no sewing. Thread is an essential. The sewing machine uses thread to join fabrics together. To understand How To Thread A Sewing Machine, we must see that the swing machine uses two threads. One thread fills a bobbin and is inserted under the fabric flow. One thread is drawn through the eye of the needle from above. To produce quality stitches we must understand How To Thread A Sewing Machine. The sewing machine moves the needle down through the fabric and beyond. The thread from above is caught by the sewing machine hook and pulled around the bobbin thread. The needle withdraws and moves up. It tightens the threads into a locked stitch inside the fabric.

If you do not understand How To Thread A Sewing Machine you get problems. Unfortunately, when a sewing machine is not properly threaded, the stitching is distorted or possibly ruined completely. There are many

ways to improperly thread a sewing machine, but only one right way to thread a sewing machine. This is How To Thread A Sewing Machine. There are thousands of different models of sewing machines. Each one has its own unique way to accommodate the threading process. Yet, they are all essentially the same. How To Thread A Sewing Machine is essentially the same for all sewing machine.

The upper thread comes wound on a spool. The spools come in a variety of different shapes and designs, but they all work the same. The spool of thread is placed over a spool pin which may be horizontally or vertically mounted to the sewing machine. This depends on the model and How To Thread A Sewing Machine. A simple and easy way to thread a sewing machine is to draw the thread through, around, and over the various thread guides to the needle. Sound easy? It is. This is How To Thread A Sewing Machine. Then, why are there so many mistakes made threading a sewing machine? It must be done perfectly every time. No mistakes. This is How To Thread A Sewing Machine. Begin at the thread spool. It must be properly placed on the spool. Draw

the thread from right to left. Draw the thread from the spool pin to the first guide.

Caution. Threads often snag on rough spots on the spool. double check that the thread flows freely off the spool.

Therefore,

Is the spool pin is horizon? Use a spool cap just slightly larger than the end of the thread spool. This is How To Thread A Sewing Machine and prevent snag. Is the spool pin rear mounted or vertical spool pins> You may need a spool net. This is a special net material used to guide the thread. You may need to keep the thread from getting snarled as it flows off the spool pin. This is How To Thread A Sewing Machine. Draw the thread through the first thread guide. Look to the left for another thread guide. Depending on the machine there may be up to four thread guides from across the top. Look for guides toward the back and front of the sewing machine. Many newer machines make this easier by numbering the threading steps. So you can just follow the numbers. This is How To Thread A Sewing Machine. From the thread guides, the thread must be drawn through the tension discs. Older machines have front mounted tension assemblies. A few have left side tension assemblies. Most tension assemblies are front mounted. In older sewing machines they were obvious. In newer sewing machines the tension assembly may be hidden or encased in the cover. Faulty threading through the tensions is a common source of problems. If the presser foot is down, the thread will ride along the ridge of the tension discs. This prevents them from sliding into the discs properly. The solution

is. Raise the presser foot lever when you begin threading. Keep it up until you reach the needle. This is How To Thread A Sewing Machine. The thread must follow through the upper thread guides and through the tension discs. These discs consist of two or more flat round discs that press against the thread during sewing to provide “tension”. The thread must flow through the tension spring which helps keep the tension on the thread stable during sewing. This is How To Thread A Sewing Machine. Next the thread must flow through the sewing machine take up lever. It must go back down through any remaining tension guides to the eye of the needle. Finally, the thread must flow through the eye of the needle. However, test before finally threading the needle. Test the tension by slightly tugging on the end of the thread. You should feel very little resistance. Now drop the presser foot and test again. (Remember it has been up until now.) You should feel resistance now. Finish the threading by threading the needle. This is How To Thread A Sewing Machine.  

 

Sewing Machine Power. Understanding Sewing Machine Power Drive Systems AC And DC. Sewing machines are incredible devices of creative ingenuity. Elias Howe invented the sewing machine in 1846. It was an amazing mechanical device driven by human power. The evolution of the sewing machine included foot power, hand power, and eventually electrical power.

As long as foot or hand power were used, they were the power drive of the sewing machine. The system consisted solely of directing the kinetic energy through wheels, belts, gears, and levers. With the introduction of electrical power for sewing machines, a challenge emerged. How can a sewing machine convert electrical power to kinetic or mechanical energy to run the sewing machine?

What is Sewing Machine Power and how does it work? Introduction of the electrified sewing machine brought a revolution to sewing. During the early years, an electric motor was added to existing sewing machines. This became the sewing machine power system of choice. A hand crank or treadle sewing machine was converted by placing a drive wheel on the end of the motor shaft. The motor was lined up with the hand wheel as the sewing machine drive mechanism.

Today, occasionally, a customer will come in and ask how they might recovert an antique converted treadle sewing machine. The treadle status has nostalgic value, but is not comparable as a sewing production machine. The electrified sewing machine has made sewing quicker. It is more reliable. It is more convenient. Electric AC motors became the sewing machine power system for many years. What is Sewing Machine Power and how does it work? Today commercial sewing machines continue to use external sewing machine motors Most home sewing machines have built in motors. These motors convert electricity from the home power outlet. They transfer usable kinetic energy to drive wheels, belts, gears, and levers. An electrical motor uses electricity to create magnetic flux between coil windings and a central core. The magnetic charges cause the center shaft of the motor generating kinetic or mechanical energy. The turning shaft is connected to a gear or belt drive wheel. A belt wraps around this connection. This transfers the mechanical energy to the upper shaft of the sewing machine. From this point the wheels, belts, gears, and levers transfer the energy through the sewing machine. This causes its parts to sew. This becomes the sewing machine power system. What is Sewing Machine Power and how does it work?

Electricity must run in a complete circuit. The flow of energy moves from positive source to negative end. Only when a continuous loop is established is it called a circuit. When this circuit is broken by opening a switch, no electricity flows. There are two fundamental sewing machine power systems. There are two basic types of electricity – AC and DC. AC or Alternating Current is electricity that runs in one direction for a moment and then back the other direction alternating repeatedly.

DC or Direct Current electricity flows in only one direction and continues to run in that direction endlessly until the circuit is interrupted. Early electric sewing machine motors were based on AC or Alternating Current electricity. These were essentially mechanical sewing machines using the levers and gears to move and form the stitches. Today many commercial sewing machines and low end sewing machines are mechanical machines driven by electric AC motors. Here is one of the hallmark features of a mechanical sewing machine. It makes a buzz or whine in the motor before it builds up sufficient force to move the sewing machine parts.

What is Sewing Machine Power and how does it work? More modern sewing machines including the most advanced computerized sewing machines have introduced the use of DC motors. Electronic circuits and integrated circuits are used to convert AC electricity into DC electricity. It then uses DC motors to directly control stitch functions and machine operations. This advance has enabled the modern sewing machine to achieve convenience. Stitch capabilities are achieved that have never been dreamed of before.

How to adjust tensions on a sewing machine. “The tensions are terrible. Every time I sew, the threads bunch up.” This and similar complaints are among the most common complaints by sewing machine users. Excess threads bunch up under the fabric or bubble up on top of the fabric. The stitch may be fine for an inch or two, and then suddenly they screw up and the whole job is ruined.

So how do you adjust tensions on a sewing machine? There are several causes of improper tension. One of the common causes of improper tension comes from inappropriate threading. This may be of the upper thread or bobbin assembly. Errors include missing a thread guide. Threads may float on top of the upper tension discs. Threads may miss the bobbin tension. Each of these errors can cause havoc with the stitch quality. Other causes include Rough spots, worn surfaces, lint and debris, burrs on the hook, bad needles, and bad thread.

So how do you adjust tensions on a sewing machine? Perfect stitches form when the upper and lower threads connect in a locked stitch in the middle of the fabric. There should be no excess thread on the top of the fabric or underneath. The thread should flow smoothly and tightly from one stitch to another. There should be no puckers, looseness, or wobbles. So how do you adjust tensions on a sewing machine?

To achieve these perfect stitches the upper and lower threading must be appropriate. The drag or resistance of the upper tension system and the bobbin tension system must balance each other precisely. So how do you adjust tensions on a sewing machine? Consider the fabric like a stream of water. The threads are like ropes across the stream. One tug of war team pulls up and another pulls down. Each team pulls across the stream. The lower team or bobbin team may pull harder than the upper tension team. You can tell by the excess thread under the fabric. This is hidden until you lift the fabric to see ugly bunches of thread. The stitch may even look fine on top while the threads jam up underneath. The upper team may pull harder than the lower team. Excess threads will pop up on top of the fabric. Usually, you will see these balls, bunches, or bubbles of thread almost as soon as they stitch.

So how do you adjust tensions on a sewing machine? To perfectly adjust the tension, double check the threading. Check the bobbin and the upper thread making sure the thread flows through upper and lower tensions properly. Look for any snags or interruptions. Adjust the lower tension. Thread should flow smoothly through the bobbin tension with a slight tug and without snagging. Finally, tighten the upper tension until it balances the lower tension. This should produce stitches that meet in the middle of the fabric. Oh, so that is how to you adjust tensions on a sewing machine. Always do a test seam on scrap materials before sewing a finished seam that will be seen. Adjust the tension on the stitch you plan to use until it is properly balanced. Note a straight stitch may appear balanced. Check the zig zag or other stitch as well. It may not produce your perfect stitch. Always test before sewing your finished seam. You may notice irregularities on one side of a zig zag stitch and not on the other. Test and adjust until it looks the best you can make it. Some machines have design issues that make a perfect zig zag stitch almost

impossible. If you want a perfect stitch and you have one of these older machine, consider getting a better machine.

 

 

Sewing Adjust Bobbin Tension. How do you adjust the bobbin tension? How do you Sewing Adjust Bobbin Tension?

Tensions are a common source of problems in sewing. Understanding how tensions work is essential for every sewing machine user. Sewing Adjust Bobbin Tension affects every stitch. It is not as complicated as some believe, and not as simple as some might think. Tension is the amount of drag or resistance on the thread as it moves through the sewing machine. The tension on top and on bottom should balance properly. Sewing Adjust Bobbin Tension will affect this balance. The threads will join in the middle of the fabric with no excess thread on top or the bottom of the fabric.

The Bobbin Tension System demands proper Sewing Adjust Bobbin Tension. The lower thread system is even a little more mysterious than the upper thread system. This is the mystery of Sewing Adjust Bobbin Tension. But it is in many ways even more simple. Sewing Adjust Bobbin Tension may involve top loading bobbins. Sewing Adjust Bobbin Tension may involve front loading bobbins. Sewing Adjust Bobbin Tension may involve even side loading bobbins. Older machines often used shuttles mounted underneath the machine. While

there are a variety of different designs, the essentials are the same. It is still a matter of Sewing Adjust Bobbin Tension. Thread is wound on a bobbin The bobbin is placed into a case or holder. (Older machines used shuttles the same way). The thread in the bobbin is drawn through a tension device and up to the top of the sewing platform. Important for Sewing Adjust Bobbin Tension. 1. Be sure you have the right bobbin. This is vital for Sewing Adjust Bobbin Tension. 2. Be sure the bobbin thread is properly wound with no loops or loose threads and not too tight either. The thread should be smoothly wound around the bobbin. 3. Be sure to place the bobbin in the bobbin carrier exactly the way your sewing machine manual says. Follow your instruction manual for Sewing Adjust Bobbin Tension. The bobbin thread usually moves from left to right or clockwise around the bobbin as it turns. However, there are models that are exactly the reverse. The key is to observe how the thread enters the bobbin carrier tension assembly. The thread should trail back under the tension so that it does not slip out during use.

4. Thread through the lower tension. Usually, this means the bobbin thread will peal back through the bobbin tension rather than follow along or just flop in the wind. Notice the piece of metal on top right of the carrier. A small

metal spring usually built into the bobbin carrier applies pressure or resistance to the bobbin thread. This is the bobbin tension spring. A tiny screw holds the tension spring in place. Turning this screw to the right will tighten the lower tension. Turning it to the left will loosen the bobbin tension. (“Righty Tighty, Lefty Loosey”). 5. Some bobbin carriers are built into the machine or fasten in place to receive the bobbin. Other bobbin carriers are made as bobbin cases which detach from the machine to receive the bobbin and then are reinserted after loading the bobbin. If you have a bobbin case that detaches from the machine, test the tension by doing the following. Pull off about six inches of bobbin thread through the tension. Dangle the bobbin carrier with the bobbin in it while holding the thread above it. The lower tension should hold the carrier so that it does not drop. If it does, just turn the screw a quarter turn to the right. If it does not drop, try bouncing the carrier a little. If the tension is properly set, the carrier will drop a little and stop. If it does drop a couple of inches and stops, all is good. If the carrier does not drop at all even after pretty good bounce, the tension is too tight. Turn the screw a quarter turn to the left. Try again. Many machines have a drop in bobbin that fits into a bobbin carrier below the needle plate. Once the bobbin is placed in the carrier, the thread is drawn under a tension spring. The same gentle pull test used in the front loading bobbin can be used with the drop in bobbin, but it is a bit less precise. If you continue to experience difficulties with the bobbin tension, it may be adjusted by turning the small tension screw on the spring of the bobbin carrier. You may also seek the expert assistance of your local sewing machine technician if needed. A special spring loaded gauge may be used to measure the actual tension on the string, but in most cases it is not required. Double check to identify any worn parts that might snag the thread. If you find a rough spot, burr, or other such spot, correct the problem before bringing the thread up through the needle plate hole and preparing to sew.  

 

How To Balance Tensions on a sewing machine. When the tensions are out of balance on your sewing machine, the stitching can be a disaster. You can get gobs of thread collecting under or on top of the fabric. The seam may have irregularly formed stitches as well as skipped stitches. This is one of the most common problems facing the sewer. It can be terribly frustrating to finish a seam and discover it looks really bad. There may be no real problem with the bobbin tension assembly or the upper threading system, or there may be some little snag in the works.

The solution, however, is to fix the tension balance. Fortunately, this is usually a pretty quick fix. You need to understand the tension system of your sewing machine and how to set the tension balance properly. How do you balance tensions on a sewing machine?

Tension is the amount of drag or resistance on the thread as it moves through the sewing machine. The tension on top and on bottom should balanced properly. The threads will join in the middle of the fabric with no excess thread on top or on the bottom of the fabric. The thread from the top and the thread from the bottom meet and form stitches in the center of the fabric. There should be no excess thread on top or bottom. Hence, tensions are said to be balanced. How do you balance tensions on a sewing machine? Imagine you are trying to line up three square blocks in mid air by holding on to the two outer blocks only. In your left hand you hold the “Bobbin Block”. In your right hand you hold the “Upper Thread Block”. Your goal is to hold all three blocks in a straight line with no block out of skew. If you move the left hand block one way it automatically affects the other two.

Another illustration of this can be seen in a game of tug of war. Two teams grab their thread one from the bobbin and one from the needle area. If the two teams pull with equal force, the thread knot or stitch will be centered inside the fabric. If one team pulls harder than the other, you will see the thread knot bubble to that side. The stronger side pulls harder than the other. The harder it pulls, the more thread collects on that side of the fabric. How do you balance tensions on a sewing machine? Now if you look at your seam, do notice a bunch of thread collected under the fabric? Which side is pulling harder the bobbin team or the needle team? That is right the team that pulls the hardest gets the excess thread collection. The thread collects on the bottom of the fabric. The bobbin team is pulling harder than the needle team. The same would be true in reverse. If the thread collects on top of the fabric, the needle team is pulling harder than the bobbin team. So, how do you fix the problem of excess threads collecting on one side of the fabric? How do you balance tensions on a sewing machine? To balance the tensions, simply adjust the upper tension in relation to the lower tension. You may think the bobbin tension could be poorly adjusted. This happens if you just changed the size of thread you have been using. Reset the bobbin tension. Otherwise, you should not have to adjust the bobbin tension. Note if you do change the size of thread, your bobbin tension may need to be adjusted. You may need to compensate for the difference by adjusting the upper tension. There is excess thread on the bottom of the fabric. Increase the tension on top by turning the adjustment knob to a larger number (usually turn clockwise). There is excess thread on the top of the fabric. Decrease the top tension by adjusting the tension knob to a lower number (counterclockwise).

Check The Following Items. 1. Rethread & Double Check threading. 2. Test lower and upper tensions as you thread. 3. Test sew and adjust upper tension – increase or decrease. 4. If you continue to have tension challenges, take the machine to your local sewing machine service center for a thorough service.  

 

How To Adjust Sewing Machine Stitches? You have a bunch of sewing machine stitches you can adjust. You have over a thousand different hand stitches. There are sewing machine utility stitches. There are sewing machine decorative stitches. There are serger stitches. There are industrial manufacturing stitches. You can adjust sewing machine stitches. How do you adjust sewing machine stitches?

On a moderately priced home sewing machine you will find twenty to two hundred different stitches. You can adjust sewing machine stitches for stitch length and stitch width. You may even adjust sewing machine stitches as stretch stitches. A top quality home sewing machine will have eight hundred to a thousand different stitches. You can adjust all of these sewing machine stitches. There are several distinctly different types of sewing machines. Each type uses slightly different systems to select and form stitches.

How do you adjust sewing machine stitches? Mechanical sewing machines are the least expensive sewing machines. They use the most primitive technologies. An AC electric motor turns a belt turns the upper sewing machine shaft. The upper shaft transfers the mechanical energy along the shaft past the cam system to the needle system. A lever on a parabola connection transfers the mechanical movement. It moves down to the lower sewing machine shaft. The lower shaft may be split into a dual lower shafts. One shaft drives the hook and a second drives the feed dogs. Stitches are formed in a mechanical machine by aligning cam trackers. These are levers that rub against a cam gear with bumps and shallows. The trackers line up against the cam gear. When the cam gear moves, the tracker lever will bounce back and forth. This movement is transferred by lever to the needle assembly. The needle bar moves back and forth and up and down to form the desired stitches. The alignment of the cam trackers is achieved by use of levers, buttons, or dials. These are mounted on the top or face of the sewing machine. How do you adjust sewing machine stitches? The user moves the stitch selector to the proper position. The trackers line up to form that stitch. Additional dials or levers are used to adjust the stitch length and stitch width. Electronic sewing machines use electronics to control the power drive system and the stitch selection system. Note many machines are blends of mechanicals and electronic technologies. Others are blends of electronics and computer technologies.

Fully electronic sewing machines use electronic circuits. These manage motor output giving the sewing machine greater torque, increased consistency, and smoother sewing. Stitches are selected with electronic buttons. Push a button and your stitch is produced. Electronic sewing machines usually offer more different stitches and more dependable sewing.

How do you adjust sewing machine stitches? Computerized sewing machines use the most advanced technologies. They also produce the greatest number stitches. Here you find the most different stitches, smoothest sewing, and most dependable operations. Computer input is made either by touching buttons on the computer keypad or a touch screen. The computer takes the signal. It manages a set of DC pulse motors to create and manage stitches. It is common for computerized sewing machines to offer hundreds of different stitches. How do you adjust sewing machine stitches? To choose a stitch on a mechanical sewing machine turn a dial, move a lever, or press a button. On an electronic sewing machine, press a button attached to an electronic switch. On a computerized sewing machine, press a button on the computer keypad or touch the selection on a computerize touch screen. How do you adjust sewing machine stitches? Three basic types of stitches are used: Utility Stitches, Decorative Stitches, and Button Holes.

Utility Stitches include many different stitches. They include the straight stitch and the zig zag stitch. They include the blind hem stitch and stretch stitches. They include the overcast stitch and the blanket stitch. They include may other useful stitches for practical purposes. Decorative Stitches include many varieties of satin stitches, outline stitches, and specialty stitches. Button Holes include four step button holes, one step button holes, darning stitches, and eyelet stitches.  

 

Fix My Sewing Machine Pedal. The pedal on a flower is what makes the flower beautiful. In similar fashion, my pedal on a sewing machine gives power to the sewing machine so it can make things beautiful.

How do I Fix My Sewing Machine Pedal? First, I must find out what is wrong. This requires a series of tests and checks. Is the electric plug plugged into the house plug? Is the power cord and my sewing machine pedal cord plugged firmly into my sewing machine? Is my sewing machine power switch turned on? Is my sewing machine light on? When I press down on my sewing machine pedal, what happens? To Fix My Sewing Machine Pedal I need to make sure the electricity is flowing properly. It must not have any break from the wall plug to the sewing machine to my sewing machine pedal. Assume we have answered all the questions except the last one a resounding, yes. We have come to Fix My Sewing Machine Pedal. What happens when I press down on it?

Is there any sound at all from my foot control or from my sewing machine? If there is no sound, that is good. If you hear a popping or crackling sound, unplug it immediately. If I shake my sewing machine pedal, do I hear anything rattling inside? Does the sewing machine make any sounds? If I hear a hum, then the problem is probably not in my sewing machine pedal. If there is no movement and no sound from the sewing machine, my sewing machine pedal is suspect. Try pressing it down and letting up several times. Hold it down for a few seconds. If I still hear nothing and the sewing machine is motionless, it is my sewing machine pedal. I unplug the foot control from the sewing machine. Now I need a tester. There are a few different types that will work. A TVOM, Continuity Tester, Circuit Tester, or Resistance Testeris now needed. I set my tester to test Resistance in Ohms. I place one probe on one wire going to my sewing machine pedal. I place the other probe on the other wire going to my sewing machine pedal. When I press down on my sewing machine pedal, what happens on the meter?

If there is no needle action, I have a broken circuit either in my wire or in my sewing machine pedal. To Fix My Sewing Machine Pedal, I next open my sewing machine pedal. It has screws on the bottom that I remove. Some have finger catchers on the sides. So I release the catch, and my sewing machine opens. My sewing machine pedal is part of the electrical system of the sewing machine. My sewing machine pedal is usually part of the sewing machine power cord. Even when it is separated from the power cord its cord is an issue. To Fix My Sewing Machine Pedal requires fixing its electrical cord. I must fix electrical connections inside my sewing machine pedal. I have the pedal open to Fix My Sewing Machine Pedal. I look for any broken pieces. I look for loose wires. I look for burn spots. If I see loose wires, I reconnect the wires properly. I retest my foot control by connecting the probes of my meter to the two terminals inside. If there is still no needle action, my sewing machine pedal is no good. In rare instances, I can

see where a wire has been broken off or some minor problem exists. But in most cases, to Fix My Sewing Machine Pedal, I need to replace it. To Fix My Sewing Machine Pedal by replacing it, I disconnect power cord. I then connect the power cord to a brand my brand machine pedal. Once connected and reassembled, I return to set of test questions. If it now works, I have do it. This is Sewing Machine Pedal.  

 

it from the new sewing my original it - Fix My

HOW TO REPAIR A SEWING MACHINE CORD. In the early days of the sewing machine, the power to drive the mechanisms came from either hand or foot. The treadle sewing machine has been manufactured for over 150 years. Janome International continues to produce treadle sewing machines for third work settings lacking electricity. There are groups of people who still use treadle sewing machines. Pennsylvania’s Amish prefer not to use electric powered sewing machines. The continue to seek treadle sewing machines. Many hundreds of sewing machine models were also manufactured using hand crank mechanisms. One advantages of the hand and foot powered sewing machine, what they had no power cord to go bad.

How do you repair a sewing machine cord? Today electric power has largely replaced the treadle and hand crank sewing machines. Electrical power is distributed through standard household electrical outlet to the sewing machine power cord. In the United States, this electric power comes in 120 AC. In Europe it comes in 240 AC. The electrical system within the sewing machine must be designed to accommodate the appropriate power system. The sewing machine power cord must also fit the right system. It is dangerous to use a machine designed for use in the United States in Europe (or the reverse). It will

result in a messed up sewing machine. This is a major sewing machine repair. How do you repair a sewing machine cord? To accommodate the other power system is fairly simple. You may purchase a power transformer. Alter the power system to match the power required for your sewing machine. Plug the transformer into the power outlet. Connect it to the sewing machine. You are ready to sew. Some models require conversion that constitute a basic sewing machine repair. Over time the sewing machine power cord may become worn. The insulation may crack or even brake away from the wire. The two wires may become exposed to each other. This creates a dangerous electrical problem. How do you repair a sewing machine cord? Not only can shorts or opens cause your sewing machine to fail and cease operating. Shock and electrical discharges can cause fires. They can ruin motors. They can destroy circuit boards. They can generally mess everything up. This can be an expensive sewing machine repair. How do you repair a sewing machine cord? Therefore, it is important to periodically inspect your sewing machine power cord. Look for prongs that are bent out of shape. Look for cracks. Look for cuts. Look for worn spots. Look for wear on the outlet plug. Look for wear on the power cord. Look for wear on the sewing machine socket.

How do you repair a sewing machine cord? Do you see ware that does not threaten the integrity of the sewing machine power cord? You may use standard electrical tape to cover the flaw. Insure the continued reliability of the sewing machine cord. Do you see cracks or an obvious break in the power cord? This requires sewing machine repair immediately. Repair the cord by cutting the bad spot out of the power cord. Join only good ends by separating the two wires on each section. Make sure the insulation is in good condition. Attach the appropriate ends together. Remember you are working with AC voltage so as long as the wire is continuous after joining, they will work. You may solder the ends or use wire nuts to join the wire. Once the wires are joined, cover the joint with electrician’s tape thoroughly to prevent further wear. How do you repair a sewing machine cord? If the cord is badly worn, replace it. Do not continue using faulty sewing machine power cords. In most cases, you can install a new power cord without replacing the foot control. Yes, many cords do attach to the foot control, but the foot control may be disassembled and the ends of the new cord installed. This is a basic sewing machine repair.

How do you repair a sewing machine cord? If the foot control also requires replacement, you may research aftermarket sources for the part. You sewing machine may be a very popular model or fairly new. You may find an original product to be available. Otherwise, an aftermarket product may be available. Often older machine foot controls may be replaced with generic foot controls. The key is: do not use faulty sewing machine cords or foot controls.

ADJUST NEEDLE BAR HEIGHT ON YOUR SEWING MACHINE. How do you adjust the needle bar height on your sewing machine? This is an important sewing machine repair. Needle bar height is critical and must be adjusted properly for your sewing machine to function properly.

How do you adjust the needle bar height on your sewing machine? Look at your sewing machine as you read through the following observations. You may want to remove the needle bar cover to see better. Your machine may or may no allow you to do so conveniently. You may also want to remove the screws holding your needle plate in place.

Now observe, as you take hold of the hand wheel with your right hand. Always turn toward you. As you turn the hand wheel, a shaft across the upper part of the machine turns. In turn a set of short pivoting offset levers work together to produce an up and down motion. See the needle bar raise and lower. If the needle bar height is not properly adjusted, it will not work.

How do you adjust the needle bar height on your sewing machine? If you look closely, you can see the needle bar with a sleeve around it. It is held in place by a set screw. This is where you will adjust the needle bar height. This is like a hand extended from an arm. The precise position of the hand is set on the bar. It determines how far down the needle with go and how far up too. This needle bar height positioning is crucial. Even a fraction of an inch too low, and the needle will collide with the bobbin carrier. A slight bit too high, and no stitch will form. This sewing machine repair is vital. Adjust the needle bar height properly. How do you adjust the needle bar height on your sewing machine? Closely examine the needle bar for two slash markings. These are guides to identify the recommended setting. To adjust the needle bar height, raise the needle bar to its highest position. Loosen the set screw. Slide the bar down until the slash mark aligns with the casing appropriately. Roll the needle bar to its lowest setting. The needle bar slash mark should be just visible above the casing. Depending on the model, this sewing machine repair may

require slight variations. height.

The goal is to properly adjust the needle bar

How do you adjust the needle bar height on your sewing machine? Another way to adjust the height of the needle bar is to lower the needle to its lowest position. Raise the bar until the point of the hook aligns with the needle within the needle scarf. This sewing machine repair technique works best on oscillating hook sewing machines. It can also be done on other sewing machines. Loosen the set screw in the needle bar. Adjust the bar up or down as needed. Test to make sure the needle bar does not strike anything in its lowest or highest swing. Also make sure the point of the hook moves behind the needle in proper time just above the eye of the needle. How do you adjust the needle bar height on your sewing machine? Notice the position of the needle as it penetrates the needle plate. When the needle lowers, it should slide through the center of the needle plate centered back and front. The bar must also allow the needle to slide. It moves below the needle plate. It slides in front of the hook just a paper thickness away from touching and no more. Some models vary slightly, but it is essential that the needle bar be properly positioned. Therefore, check the timing. Is it distorted with this standard setting. Access a service manual for the required setting on the specific model. How do you adjust the needle bar height on your sewing machine? Notice the needle bar moves though a vertical sleeve. Commonly this sleeve controls the forward and backward positioning of the needle bar. The needle falls below the needle plate. The needle must be almost touching the hook as it moves behind. If it touches, you will hear a little ping indicating that it is too close. If, however, the distance between the needle and hook are too much, the hook will fail to pick up the thread. No stitch will form. A set screw on the excentric that holds the needle bar controls the hook needle clearance.  

 

How To Adjust Sewing Machine Timing. Like two ballroom dancers, unless both partners work together with flawless grace, the whole dance falls apart. In your sewing machine, it may be more apt to compare the timing to a large square dance. The many different parts all working, moving, rotating, and acting simultaneously. All this is to achieve perfect harmony. There are two principle areas in your sewing machine where timing is most obvious.

How do you adjust sewing machine timing? First, there is the timing relationship between the hook and the needle which we call hook-needle timing. How do you adjust sewing machine timing? Second, there is the upward, backward, downward, forward motion of the feed dogs. This must coordinate with the rise and fall of the needle which we call feed dog timing. How do you adjust sewing machine timing?

When the sewing machine is properly timed, all the parts work together in a seamless flow of coordination. The needle moves from it highest point down toward the needle plate. The feed dogs reach the farthest point toward the back of the sewing machine. The feed dogs drop under the needle plate. This is just before the needle point reaches the needle plate. The needle continues to move down dragging the upper thread under the needle plate. It proceeds toward its lowest point. The needle begins its rise back up. A loop of thread forms along the back of the needle. A special cut out on the back of the needle to accommodate this loop is called the scarf. The sewing machine hook slides behind the needle. The point of the hook slides into the thread loop and pulls the thread around the bobbin. The bobbin thread and upper thread wrap together. The needle and hook proceed through their actions under the needle plate. The feed dogs move under the needle plate from back to front.

The needle proceeds to rise again up out of the bobbin area exiting the needle plate. At the same time the feed dogs rise up out from under the needle plate. They begin to move from front to back as the needle continues to rise. The thread from the bobbin flows through a bobbin tensioner providing resistance to the thread as it is drawn up by the upper thread knot. The upper thread is also under tension. This comes from the upper tension, thread guides, tension spring, and sewing machine take up lever. The thread from top and bobbin grow increasingly tighter until they form a locked stitch in the middle of the fabric. This process is repeated for every stitch. How do you adjust sewing machine timing? The needle, hook, and feed dogs must move in harmony. If they fail to do so, the machine will not perform as expected. When the hook is just slightly out of time with the needle, you will notice skipped stitches. This may begin on only one side of the zig zag stitch or intermittently. If the timing is just a bit more out of sync, stitch formation will become impossible. If the feed dog timing is out of sync, the fabric will not move through the machine as expected. Threads may bunch up or the fabric may just not move. As you can see, timing is everything.  

 

Understanding Sewing Machine Hook Systems. There are to basic types of sewing machine hook assemblies. There is the Rotary Hook assembly. And there is the Oscillating Hook assembly. Each type has its own features and benefits. They both do essentially the same job. It is important to understand sewing machine hook systems.

The Rotary Sewing Machine Hook Assembly is a hook that moves in a complete circle. It rotates round and round. The sewing machine hook slides behind the needle. It proceeds all the way around the bobbin carrier. It slides behind the bobbin carrier. Singer sewing machines revolutionized the sewing world. They introduced their drop in rotary sewing machine hook systems. Maintaining the sewing machine hook is a vital sewing machine repair.

Look at a sewing machine. Look for where the bobbin is inserted into the sewing machine. There are basically three locations insert the bobbin. There is the top loading bobbin. There is the front loading bobbin. And there are a few models that used a left side loading bobbin.

Is the bobbin a top loading bobbin. Is it placed just below the needle plate and a slight bit in front of it? If so, it is a rotary sewing machine hook. The bobbin may be inserted in the left end of the sewing machine arm. Or it may be inserted on the front face of the sewing machine arm. A bobbin inserted on the left or front may be a rotary sewing machine hook. Or it may be an oscillating sewing machine hook.

A rotary sewing machine hook moves around in a continuous circular motion. An oscillating sewing machine hook moves back and forth. How can you tell which type of sewing machine hook assembly you have? Watch the place where you insert your bobbin. Turn the hand wheel toward you. Watch the sewing machine hook. The sewing machine hook is a metal piece just outside or behind of your bobbin carrier. Watch it as it turns. Does it go all the way around? If so it is a rotary sewing machine hook. Does it go part way and retrace its path to start over? If so it is an oscillating sewing machine hook? Knowledge of the sewing machine hook is essential for sewing machine repair. The Oscillating Sewing Machine Hook Assembly has a sewing machine hook with a starting position. It begins a few millimeters to the top left of the needle. It moves to the right sliding behind the needle. It goes past the needle and moves around to the bottom of the swing. The oscillating sewing machine hook travels back again. It moves the same way to its original position for a return oscillation. Bernina sewing machines built a superior reputation. It was based on their advanced oscillating hook system called a CB Hook. Both systems do essentially the same thing. The point of the sewing machine hook passes behind the needle. It is positioned slightly higher than the eye of the needle. The upward travel of the needle causes a small loop of thread to form on the back side of the needle. This loop is just above the eye. It is amplified by a space called the scarf. This is cut out of the back of the needle above the eye. The point of the hook snags the thread. It moves behind the needle. It pulls the thread around the bobbin thread. As the needle rises, the threads are tightened into a lockstitch. Any variation will require sewing machine repair. The movement and positioning of the sewing machine hook and needle must coordinate exactly. Slight variations result in skipped stitches. It can cause poorly formed stitches. There may be no stitches at all. As the hook and needle travel, they move through a finite pattern. For each stitch the hook and needle must align perfectly. As the needle rises, the loop must form on the back of the needle. The point of the hook must travel to precisely the right position. It must arrive at the right moment for the hook to snag the upper thread. This is called Hook Needle Timing. This timing is essential for sewing machine repair.

There are several ways to adjust the hook needle timing. It depends on the sewing machine model. Some adjust the position of two interlocking gears immediately below the sewing machine hook. Some must be adjusted at the right side of the lower shaft. This is where the lower shaft joins the vertical shaft. Some must be adjusted by adjusting a timing belt. In all cases, the needle and hook must meet at the right time in the right way to form stitches. This is essential for proper sewing machine repair.  

 

How to Adjust Oscillating Hook Timing. How do you adjust an oscillating hook timing on a sewing machine?

An oscillating hook is a sewing machine hook that rotates half way around. It stops releasing the upper thread. Then the hook rotates back to its starting position. It is important that you understand oscillating hooks for proper sewing machine repair. This is very similar to the oscillating patterns used by the much older shuttle machines. In the antique shuttle machines, a long bobbin is wound full of thread and inserted inside the shuttle mechanism. In the sewing machine, the shuttle is typically mounted on a long arm that moves back and forth beside the needle. The shuttle picks up the thread loop from behind the needle and slides it over the bobbin to create the lock stitch. Proper adjustment is critical for sewing machine repair.

How do you adjust an oscillating hook on a sewing machine?

There have been hundreds of sewing machine models using the oscillating hook system. Most of the oscillating hook sewing machines today have bobbins that fit into a bobbin carrier that detaches from within the hook assembly. These machines may be left side loaded, but more commonly are front loading machines. Sewing machine repair technicians must understand oscillating hooks.

How do you adjust an oscillating hook on a sewing machine? Commonly, a door covers the sewing machine hook assembly. At the touch of a finger the door opens to reveal a bobbin carrier. Usually the carrier (with a locking latch across its center) is mounted attached to a center post protruding from the center of the hook. Popular brands using the oscillating hook system have included Necchi, Dressmaker, Janome, and Bernina among other brands. Bernina sewing machines patented their CB hook system, and became a leading quality sewing machine brand. Bernina sewing machines are often describes as the “Cadillac” of sewing machines. This is important for sewing machine repair. How do you adjust an oscillating hook on a sewing machine? The oscillating hook assembly is often considered superior to the rotary hook system, because it often produces a more stable and higher quality straight stitch. Today, however, high end sewing machines have abandoned the oscillating hook system. Due to stitch width limitations of the oscillating hook system, and certain other limits the rotary hook system prevails. Sewing machine repair must take this into consideration. How do you adjust an oscillating hook on a sewing machine?

Here is the basic procedure to adjust the hook needle timing. Set the point of the hook so that it picks up the thread loop behind the needle. This is a vital setting for sewing machine repair. Set stitch selector to zig zag and stitch width to its maximum. Remove the Bobbin Carrier, Bobbin, and Shuttle race cap (mechanism that holds the hook in place). Leave the hook in place. Note you may have to hold it in place with your finger while you make adjustments. Make the proper sewing machine repair. Rotate the hand wheel toward you until the needle reaches its lowest point in the far right needle position. Rotate the hand wheel slowly until the needle enters its upward swing. How do you adjust an oscillating hook on a sewing machine? The hook should begin turning clockwise (from left to right). As the needle rises, watch closely to see the point of the hook move behind the eye of the needle. Note the tip of the hook should be 0.5mm above the hole in the eye of the needle. If the gap is too small or too large, it will need to be adjusted. Repeat the same process and observe the far left needle position. Generally, if the point of the needle moves behind the needle scarf properly, it will pick up the thread loop and form the stitch. Adjust properly for sewing machine repair. How do you adjust an oscillating hook on a sewing machine? Here is an alternate approach to adjusting the hook needle timing. Rotate the hand wheel to move the tip of the hook to the farthest left movement . Measure from the point of the hook to the needle just as the needle begins its rise. It should measure 2mm. The hook must be able to pick up the thread from the extreme left and right needle positions. This is vital for proper sewing machine repair. Adjust the rotation when required. Look for a lower drive shaft on the bottom of the sewing machine. Observe how it oscillates back and forth driving the hook to do the same. Loosen the adjusting screw on the drive gear. Manually move the hook to its appropriate position. Retighten the adjusting screw.

After setting the hook needle timing. Run the sewing machine a minute or two and listen carefully. Listening is an important skills for sewing machine repair. If you hear a slight ping. The needle and hook are too close together. They are actually touch slightly creating that pinging sound. The hook needle distance must be adjusted accordingly. They should be as close as possible without touching or producing a ping as they pass. Adjust properly for effective sewing machine repair.  

 

How To Adjust Rotary Hook Timing. Rotary hook sewing machines have hooks that rotate round and round. They pick up the needle thread from the scarf loop. They draw the thread all the way around the bobbin and bobbin carrier. The hook assembly may be mounted from the left side (old), front, or top of the sewing machine sewing surface. This is vital for sewing machine repair.

How do you adjust rotary hook timing on a sewing machine? Generally, rotary hook sewing machines may be adjusted in much the same way. The goal of timing is for the point of the hook to reach the scarf of the needle as the scarf loop forms. It grabs the needle thread and proceeds to draw the thread around the bobbin. The rotary hook must be aligned so that it meets the hook no matter where the needle rises. The hook must be in position to pick up the thread as it rotates. It is vital for sewing machine repair. Straight stitches may see the needle rise and fall in the same place repeatedly in one of several different positions. Zig zag and other stitches vary their positions. Therefore it is essential that the rotary hook reach the scarf properly every stitch. Double check every time you do sewing machine repair.

How do you adjust rotary hook timing on a sewing machine? To adjust the hook needle timing on the rotary hook, first, remove the bobbin, bobbin carrier, and covers so you can see the movement of the hook. This may involve removing the needle plate for top loading assemblies, or removing the hook cap from the front of the machine. It often requires the removal of the lower covers to reach the component parts. Adjust as needed when doing sewing machine repair. How do you adjust rotary hook timing on a sewing machine? Set the machine to a straight stitch at the default position. Different models have different default positions including the most common far left and center positions. If no problems are perceived in needle bar positioning, the default position will suffice. If there are needle bar position issues, these need to be adjusted prior to adjusting the timing. Follow proper sewing machine repair procedures. How do you adjust rotary hook timing on a sewing machine?

Rotate the hand wheel toward you until you see the needle reach its lowest position and begin its rise. Now look for the point of the hook as you continue rotating the hand wheel. The point of the hook should strike inside the needle scarf above the needle by about 0.5mm. Sewing machine repair is vital for smooth operations. Check to see if the hook fails to pick up the thread. Double check the needle bar positioning including the hook needle spacing. If these are appropriate and the point of the needle still fails to pick up the loop thread, proceed to adjust the timing of the hook. Maintain regular sewing machine repair. How do you adjust rotary hook timing on a sewing machine? Look for the lower drive mechanism. It may be a lower shaft with gears on either end. If this is the case, look to the right end of the shaft for a gear with adjusting set screws. Loosen and manually adjust the position of the hook. Tightly hold the hand wheel while turning the drive shaft to set the proper position. Retighten adjusting screws. Maintain regular sewing machine repair. There is usually a reason for timing to be askew. Carefully examine the drive gears for wear or breakage. Often the gears need to be replaced. How do you adjust rotary hook timing on a sewing machine? Other models have timing belts that control the timing of the sewing machine. Look for a belt connected on each with to drive gears. Look for work cogs on the belt. In most cases, you can reset the timing belt, without replacing it. If, however, the belt requires replacement you will need to do so. Loosen the drive mechanism on the right side to free the movement of the belt. Manually adjust the position of the hook to the needle and retighten set screws. This knowledge is vital for effective sewing machine repair. Once the timing has been reset, conduct a thorough test sewing on the sewing machine to make sure everything is working properly.  

 

Sewing Machine Feed System. Understanding The Sewing Machine Feed System. How to Adjust the Sewing Machine Feed Timing. What is the sewing machine feed system? The sewing machine feed system is a system that feeds the fabric through the sewing machine during sewing. This is a common element in sewing machine repair.

The primary drive mechanism of the sewing machine feed system is a set of feed dogs. The feed dogs consist of a device with teeth or triangular ridges on top. These feed dogs are designed to slightly lift and pull the fabric through the sewing machine. The feed dogs are located directly behind the needle hole. During sewing these feed dogs pull the fabric along while the sewing machine is sewing. When the sewing machine fails to feed the fabric properly, sewing machine repair is required. The sewing machine feed system involves the lower drive shaft. It drives a special set of levers that lift, move, and lower the feed dogs in proper rotation. When the feed dog timing is messed up even a little bit, the fabric will not feed properly. Sewing machine repair is required. You may get gobs

of thread when you try to sew a seam. It may get worse you try to use short stitch lengths.

What is the sewing machine feed system? The sewing machine feed system is smooth movement of fabric through the sewing machine. A properly functioning sewing machine feed system is essential. The feed dogs should work in harmony with the needle movement. The needle falls below the needle plate. The feed dogs should be at their farthest back position and slip under the needle plate as well. The needle begins rising out of the needle plate. The feed dogs should rise from the front of their slot as well. The needle rises to its highest position. The feed dogs should rise to their highest position and move toward the back. In a properly functioning sewing machine feed system, The feed dogs should be centered in the needle plate track or feed dog slots.

There should be equal space between the left side of the feed dogs and the left side of the needle plate. The right side of the feed dogs and right side of needle plate should also be even. They should be the same distance when the stitch length is set on maximum. The space between the front of the feed dogs and the front of the needle plate slot should be the same. The space in back of the feed dogs and in of the back of the needle plate slot should be the same. The feed dogs should not touch any of the needle plate sides. It should not they touch inner supports on the needle plate. Variations require sewing machine repair. The feed dogs should rise about a sixteenth of an inch above the needle plate at their highest position. They should completely disappear under the needle plate when the needle is below the needle plate. In a properly functioning sewing machine feed system, the presser foot applies pressure to the top of the fabric. The feed dogs grip the fabric from below. The feed dogs pull it to move it under the needle from stitch to stitch. The stitch length adjustment varies the length of stitches by controlling how far the feed dogs actually travel. If they travel a very short distance front to back, the stitch will be short. If they travel longer, the stitch will be longer. If the feed dogs do anything else, the fabric will not move properly under the presser foot. Sewing machine repair is required. Sewing Machine feed system must be adjusted properly. You can check the proper movement yourself very easily. Remove the needle so you do not poke yourself, and remove the presser foot.

Observe carefully. In a properly functioning sewing machine feed system the feed dogs must be properly timed. The feed dog timing must match the needle timing perfectly. It must also match the swing of the needle. Adjust the rise and fall. Adjust the height and drop. Adjust the centering forward and backward as well as sidewise. Adjust the proper movement from front to back. This sewing machine repair is managed usually by adjusting a few set screws on the lower feed dog drive mechanism. Sometimes it must be adjusted on the camber of the upper shaft. Your professional technician will know what the proper adjustment is for your sewing machine. If you have a question about a specific model, contact your local dealer or regional sewing machine brand repair center. Request a service manual for a specific model from an authorized dealer. After you have had experience with a few sewing machines, this sewing machine repair should become second nature.  

 

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