Adjustment
12 - 5
12.05.03 Hook shaft bearing and toothed belt tension
Requirement
1. The front edge of the hook shaft 5 should be at a distance of 14.5 mm from the centre
of the needle, whereby the groove in the hook shaft bearing 1 (see arrow) should be pa-
rallel to the bed plate and point away from the direction of sewing.
2. The toothed belt should be tightened, so that when a gauge is pressed on it, the
marking in the gauge window matches the marking on the bushing.
1
3
Fig. 12 - 04
● Align hook shaft bearing 1 (screw 2) in accordance with requirement 1.
● Press gauge (part no. 61-111 639-76) on the toothed belt so that it is in the centre of the
toothed belt and touching the bearing on the rock shaft. The gauge window must point
towards the hook.
● Turn eccentric 3 (screw 4) in a clockwise direction in accordance with requirement 2,
making sure that the axial position of the eccentric 3 is not altered.
4
96-033
5
2
14,5 mm
96-032
1
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