Adjustment
13 - 12
13.05.10 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
parallel to the bed-plate and point in the opposite direction to the sewing direction.
2. The toothed belt should be tightened so that when the gauge is placed on it, the
marking in the gauge window should match the marking on the bushing.
1
3
Fig. 13 - 11
● Align the hook bearing shaft 1 (screw 2) in accordance with requirement 1.
● Press the gauge (part no. 61-111 639-76) onto the toothed belt, so that it is centred to it
and touching the bearing on the rock shaft. The gauge window must point towards the
hook.
● Turn eccentric 3 (screw 4) clockwise in accordance with requirement 2, taking care that
the axial position of eccentric 3 is not changed.
4
1
5
2
14,5 mm
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