Machine knowledge: the automatic oil feeding machine has an adjusting screw that can adjust the amount of oil supplied by the hook. Through this oil volume adjustment screw, adjust the confirmed oil volume as follows. (please refer to the installation manual of the sewing machine for details of the adjustment method.) Types of machine needles machine needles from a wide range of Japanese and European names of two kinds. Even if the needle can be used on the same sewing machine, there are many different types of needle in Japanese and European models. Since there are many kinds of machine needles, it is about the interchangeability of machine needles.
Note: after finishing the work, insert the needle into the pinhole plate, lift the pressure foot, and cover the head with the cover to prevent dust invasion. When working, check the main parts first, step up the weight of how, there is no special sound, machine needle is normal and so on, such as found abnormal phenomenon, should be timely maintenance. After the machine has been in use for a long time, an overhaul should be carried out.
The needle is an important factor in determining sewing quality and is a consumable. This paper introduces the basic knowledge of the double needle sewing machine with thick thread and some countermeasures to solve the problems caused by the sewing machine.