16. Stretching the drive belts
The drive-belts are maintenance-free and should not be restretched.
–
Dismount handwheel and belt protection.
Stretching of the drive belt motor-arm shaft:
–
Loosen screws 1.
–
Tighten the belt by shifting the motor.
–
Tighten screws 1.
3
–
Mount the belt protection and handwheel.
Stretching of the long drive and hook shaft belt:
–
Unscrew the belt tightener 3.
–
Loosen screw 2.
–
Press the upper belt pulley unit to the right with the belt tightener 3.
–
Tighten screw 2.
–
Screw the belt tightener 3 on again.
–
Mount the belt protection and handwheel.
Hint
Check the hook setting and readjust it, if necessary.
(chapter "Hook and needle bar")
1
3
2
3
45