Operating instructions

16. Stretching the drive belts

The drive-belts are maintenance-free and should not be restretched.

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Dismount handwheel and belt protection.

Stretching of the drive belt motor-arm shaft:

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Loosen screws 1.

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Tighten the belt by s hifting the motor.

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Tighten screws 1.

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Mount the belt protection and handwheel.

Stretching of the long drive and hook shaft belt:

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Unscrew the belt tightener 3.

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Loosen screw 2.

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Press the upper belt pulley unit to the right with the belt tightener 3.

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Tighten screw 2.

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Screw the belt tightener 3 on again.

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Mount the belt protection and handwheel.

Hint

Check the hook setting and readjust it, if necessary.

(chapter “Hook and needle bar”)