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Adjustment
15
Hook shaft bearing and spur gear clearance
.06.08
O Align the hook shaft bearing 1 ( screw 2 ) according to rule 1.
O Set the steel wheel 4 with the eccentric bush of the hook shaft bearing 1 according to
O Adjust the plastic pinion 3 ( screws 6 ) according to rule 3 and tighten the screws 6.
14
Rule
1. The front edge of the hook shaft 5 should be 14.5 mm away from the needle midpoint;
the groove in the hook shaft bearing 1 (see arrow) should be parallel to the bed plate
and point away from the sewing direction.
2. There should be minimal yet noticeable play between the plastic pinion 3 and the steel
wheel 4. This play should be approximately the same for a 360° turn.
3. The steel wheel 4 should align with the plastic pinion 3.
1
Fig. 15 - 09
rule 2 and tighten the screw 2.
3
4
2
6
14.5 mm
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