How a Sewing Machine Works

How a Sewing Machine Works

Knowing how works a sewing machine is important thing for those who use the sewing machine. Knowing how works a sewing machine help you to use your machine correctly. In some cases such information help you to fix and repair it yourself.
There are several types of sewing machines having different device of shuttle hook system. Here is home model of the zigzag sewing machine that has the vertical oscillating shuttle hook system.

How to adjust the height of the feed dog

For different types of fabrics need to adjust the height of the feed dog teeth. This is done using this handle (for this model of sewing machine).

The metal parts that must be lubricated

In the bottom of the sewing machine are metal parts that must be lubricated.

The metal gears should be lubricated with special grease

The metal gears should be lubricated with special grease.

The driver of vertical oscillating shuttle hook

The driver of vertical oscillating shuttle hook.
The flat spring of driver must have the gap size about 1 - 1.5 mm.

The surface of the shuttle

The surface of the shuttle must be perfectly smooth and not have any dents or rust areas.
The tip of the shuttle hook should be sharp.

The tip of the shuttle hook should pass above the eye of the needle

The tip of the shuttle hook should pass above the eye of the needle by 1.5 - 2 mm, as shown on photo.

The hook tip should pass along the needle as close as possible

At the same time the tip of the shuttle hook should pass along the needle, as close as possible - 0.15 mm.

To zoom in or remove the tip a hook from the needle you need to loosen the two screws. Then you can rotate the shuttle assemble along its axis.
Note: Other models of sewing machines can have another way of adjusting this clearance.

Oil all mechanisms under covers

Remove all covers from sewing machine. Oil all mechanisms under covers. After oiling the sewing machine will work quietly and gently.

The block for the formation of the zigzag stitch

The block of the zigzag stitch formation.

The screw of presses needle bar

Remove the front cover and oil all units and mechanisms.
First screw (P) presses needle bar. Second screw (T) clamps the thread tensions assemble.

Any thread tension assembly must have such wire hook

Any thread tension assembly must have such wire hook.

The reverse lever and knob of length stitch

The reverse lever and knob of length stitch.

Screw for fixing the electric motor of the sewing machine

Screw for fixing the electric motor of the sewing machine.

The belt tension of the electric motor

The belt tension of the electric motor can be controlled in two ways. Using this screw hold the electric motor. The belt tension can be controlled using these two screws also.

The foot control of sewing machine

The foot control of sewing machine.

How a Sewing Machine Works, photo 16

Repair it yourself is not allowed. But if you're wondering how works not only sewing machine but and the foot pedal read about it in another article.

English isn't my first language, so please excuse any mistakes and help correct them.
E-mail for sending is on the contact page.

Related Tutorials and Tips:

Tips for Choosing a Sewing Machine
Tips for Choosing a Sewing Machine

How to choose your first sewing machine or upgrade your old model? A few key features of sewing machines you need to know necessarily.

How To Sew Four Step Buttonhole
How To Sew Four Step Buttonhole

All modern sewing machines come with the ability to do buttonholes. In this tutorial you learn how to do four-step buttonhole.

Vertical Rotary Shuttle Hook System
Vertical Rotary Shuttle Hook System

Sewing machines middle and upper class have a rotary vertical or horizontal hook system. Here you can read how works vertical rotary hook and tips for repair.

Bobbin and Top Thread Problems
Bobbin and Top Thread Problems

If your sewing machine keep breaking top or bobbins thread this tutorial help you troubleshoot these problems.

How Does the Home Sewing Machine Inside
How Does The Home Sewing Machine Inside

Do you want look into the sewing machine? In this post you can see how to works this mechanism and to see all its parts.

How to Cut the Bottom of Jeans
How to Cut the Bottom of Jeans

This tutorial have steps how to restore the bottom edge of your old jeans. In this post you will learn two ways how to cut bottom of jeans at home.

20 Sewing Tips and Tricks for Beginners
20 Sewing Tips and Tricks for Beginners

Want to learn the secrets of professional tailor? In this case you need to read this post containing 20 sewing tips and tricks for beginners.

What's inside Sewing Electric Motor and Repair Tips
What's inside Sewing Electric Motor and Repair Tips

Look what is inside the sewing electric motor. These photos help you understand how to clean and fix an electric motor of home sewing machine.

My sewing patterns pdf
My sewing patterns pdf

Top