Brief analysis of the reasons: the wrong lubricant is added, especially the vegetable oil is added; there is too much dirt in the shuttle bed; the connecting rod screws and cone screws are too tight.
Preparation and adjustment work should be carried out under the guidance of the mechanic. After the completion, the sewing operation can be performed. 1. Pay attention to the correct sitting posture. 2. Pay attention to the method of controlling the pedal and presser foot of the motor.
1. Adjust the height of the presser foot. 2. Adjust the interval between the presser foot and the needle. 3. Adjust the position of the feed foot of the presser foot. 4. Adjust the position of the needle bar.
When selecting, check whether the machine head is bright, whether there is peeling of paint, scratches, pin plate, push plate, panel, upper wheel and other plating layers are intact; whether the pressing plate is straight, whether the paint is cracked or localized; whether the frame is damaged , Paint drop or twist; whether the gap between the upper and lower shafts and the needle bar meets the standard requirements.
"Buying a sewing machine to Taizhou" has become the first choice of domestic and foreign manufacturers. According to statistics, the annual output of China's sewing machines accounts for three-fifths of the world's total production of sewing machines, and the output of Taizhou's sewing machines accounts for one-third of China's. , Taizhou has become a veritable world base for sewing machine production.