Parts |
Times |
Remark |
| （1） Thread take-up lever gears |
Once a week, No.2 white oil |
|
| （2）Connecting rod and front & rear metal parts |
Once a week, No.2 white oil |
|
| （3） Needle bar case slide rails |
Once a mouth, butter |
Remove cover plate of needle bar case |
| （4） Needle bar sliding parts |
Once a week, No.2 white oil |
| （5） Rotary hooks |
1—2 times a week, No.2 white oil? |
Clean with a brush before oil |
| （6） Gears for rotary hooks |
Once per 2—3 months, butter |
Remove needle bar |
| （7） Driving chain |
Once a week |
|
（8） Main shaft of needle bar driver |
Once a week, No.2 white oil |
Remove cover plate of needle bar case |
| （9）Frame driving rails |
Once a week, butter |
|
