Instruction manual

2.2 Upper and lower toothed belt wheel / toothed belt

2.2.1 Position of the upper toothed belt wheel

Caution: Risk of injury!

Tur n off the main switch.

Check and set the position of the upper toothed belt wheel only when

themachineisswitchedoff.

Standard checking

The toothed belt wheel 2 is fastened on the arm shaft 4 with two

threaded pins. The threaded pins must sit on the flat spot 1.

The distance between the toothed belt wheel 2 and the bobbin winder

wheel 3 must amount to 0.8 mm when the bobbin winder is switched

off.

–

Check distance between toothed belt wheel 2 and bobbin winder

wheel 3 by means of a thickness gauge.

Correction

–

Loosen the threaded pins in the toothed belt wheel.

–

Tur n the toothed belt wheel, until the threaded pins sit on the flat

spot 1 of the arm shaft 4.

–

Set lateral distance of 0.8 mm between the toothed belt wheel 2

and the bobbin winder wheel 3 by using a thickness gauge.

–

Tighten the threaded pins in the toothed belt wheel.

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