Checking the Bobbin Thread
Before attempting to fix the timing on a sewing machine, it is important to ensure the bobbin thread is not tangled or knotted. To do this, it is best to remove the bobbin, untangle it and then check that the bobbin thread is properly transferred to the sewing machine. To do this, place the bobbin in the bobbin case and then turn the hand wheel to move the needle up and down. The thread should easily travel through the thread guide and the tension discs.
If the bobbin thread is too tight or does not feed correctly through the thread guide, the timing of the sewing machine may be off. Adjusting the tension according to the manufacturer’s instructions is the best way to resolve this issue.
Checking the Needle and Presser Foot
It is also important to make sure that the needle is correctly installed and the presser foot is attached and tightened. An incorrectly placed needle can affect the timing of the machine and cause stitches to be misaligned. The presser foot should also be checked periodically to ensure it is in the correct position and that the foot itself is attached securely.
The positioning of the presser foot is particularly important. If it is not correctly positioned, the timing of the sewing machine will be off and the stitches will not look good. To ensure the timing is correct, the foot should be adjusted to the manufacturer’s instructions.
Checking for Loose or Missing Parts
Any loose or missing parts should also be checked and replaced. Missing parts will cause the needle to move off-course and the timing to be incorrect. Additionally, if any of the parts are loose or worn-out, they should be replaced with new components.
Cleaning and Lubrication
Cleaning and lubricating the sewing machine is also important for ensuring the timing is correct. Cleaning should be done according to the manufacturer’s instructions, using only approved methods and supplies. Any dirt, lint or other debris should also be removed from inside the machine.
Lubricating the machine will extend its life and also helps to maintain the timing. However, it is important to use only the lubricant recommended by the manufacturer. Applying too much lubricant or using the wrong type of lubricant can damage the machine or cause incorrect timing.
Checking the Timing Belt
It is also necessary to check the timing belt, as this is an important component that helps keep the timing accurate. To do this, turn the hand wheel until the needle is at its highest point, then remove the belt and turn the wheel. If the needle moves when the wheel is turned, the belt is not correctly positioned and needs to be adjusted. Follow the instructions in the manual to correctly adjust the belt.
Adjusting the Timing
If all other parts are in proper order but the timing is still incorrect, it may be necessary to adjust the timing manually. This is best done by taking the machine apart and using the manual to identify the timing pulleys and their functions. Once the pulleys have been identified, it is then possible to make precise adjustments to the timing. It is important to keep track of all adjustments, as the timing must be exactly accurate for the machine to work properly.
Conclusion
Fixing the timing on a sewing machine can be a difficult and tedious task, however, following the steps outlined above will help ensure the machine is working correctly and the timing is accurate. By taking the time to clean, lubricate and inspect all parts of the machine, it is possible to ensure a perfectly timed sewing machine.
