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Adjustment
13 - 14
13
.05.12 Hook shaft bearing and toothed belt tension
Requirement
1. The front edge of the hook shaft 6 must be at a distance of 14.5 mm to the needle
center. At the same time, the slot in the hook shaft bearing 1 (see arrow) must be paral-
lel to the bedplate and pointing opposite to the direction of sewing.
2. The toothed belt should be tightened in such a way that, when the gauge is pushed
onto the toothed belt, the marking in the gauge window corresponds to the marking on
the bushing.
● Align hook shaft bearing 1 (screw 2) according to requirement 1.
● Push the gauge (Part-No. 61-111 639-76) onto the toothed belt so that it is centred to the
toothed belt and touching the bearing of the sliding shaft. The gauge window must be
facing the hook.
● Eccentric 3 (screw 4) clockwise in accordance with requirement 2, taking care that the
axial position of eccentric 3 is not altered.
1
3
Fig. 13 - 13
4
1
5
2
14,5 mm