Daily maintenance tips for sewing machines

1、 The first step in maintenance is "cleaning", which is crucial (try to clean once a day)
What should I pay attention to when using a heavy-duty Juki industrial sewing machine? That's' cleaning '. If the sewing machine can be maintained regularly, it can prevent dust and thread buildup, and faults will not occur, allowing the machine to be used in good condition.

Also, while cleaning the machine, some abnormal situations can also be detected. In the repair of machine malfunctions, most of the reasons are due to the accumulation of dust or wire ends.

Not only should the sewing machine be cleaned thoroughly, but abnormal situations should also be detected. For cleaning, maintenance is crucial.

Of course, there is no need to make the surface of the needle bar and the curved needle shaft completely free of oil. Just remove the dust and gently wipe it. For areas with complex part shapes, using a used toothbrush for cleaning can easily remove dust. Also, some sharp parts of the sewing machine should be carefully cleaned to avoid injury.

Key areas for cleaning
For sewing machines, not only should they not malfunction, but they should also ensure the quality of sewing. There are five most important aspects. If these places can be thoroughly and cleanly cleaned, beautiful seams can be sewn. These places should be cleaned in order, and it is recommended to clean them once a week.

① Surrounding the machine needle (wiping the needle rod)
② Around the rotary shuttle (Photo 3 Cleaning around the rotary shuttle)/Around the curved needle (Cleaning around the curved needle)
③ Surrounding the tangent cutter (fabric cutter) (cleaning of the tangent mechanism)
④ Inside the oil pan (cleaning)
⑤ Overall wiping (including machine) wiping, cleaning
The important cleaning areas are the same for different models and shapes.

2、 The second step of maintenance is "lubrication", which is the guarantee (try to lubricate once a day)
a. Oil supply adjustment method for the rotary shuttle of Juki industrial sewing machine (make sure to turn off the power)
Please adjust the confirmed oil level by using this oil level adjustment screw as follows. (For detailed instructions on adjustment methods, please refer to the installation manual of the sewing machine.)

1. Lift the presser foot and let the spinning shuttle idle for more than 30 seconds.

2. Place test paper such as photocopy paper under the rotating shuttle every 5 seconds. Please do not let the paper move during the measurement. Also, please be careful not to let your fingers touch the high-speed rotating shuttle.

3. At this point, there will be linear oil stains left on the paper. Based on the width of the oil stain, it can be determined whether the oil level is appropriate.

It is normal for the width of oil stains to be within 1-2 millimeters. According to different sewing products, the amount of oil may increase or decrease. However, if the amount is reduced too much, the rotary shuttle may burn during high-speed sewing. Please pay attention to this.

b. Regarding the oil core of the lower shaft fixing screw
When the oil level cannot be adjusted by adjusting the screw, it is possible that the oil core of the lower shaft fixing screw is blocked by garbage or other debris. At this point, it is necessary to remove the rotary shuttle, clean the oil core or replace it with a new one. Additionally, due to the soft material of the lower shaft fixing screws, please pay attention during installation.

c. Adjustment of engine oil quantity
The amount of oil on the face generally does not need to be adjusted. However, in the case of low oil supply to the engine head or more severe oil sedimentation, please adjust according to the following order. Remove the panel and rotate the oil level adjustment pin located on the upper shaft to adjust the oil level.

This part is not a screw, but a pin that can be rotated.

When the facial oil cannot be adjusted, it is possible that there is a problem with the oil supply device from the oil pump to the face. In addition, if there is excessive oil deposition on the bottom of the face, it may be a problem with the circulation mechanism from the face to the circulation pump.