Adjustment

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.

2

14,5 mm

5

4

3

1

1

Fig. 13 - 13

● 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.

13 - 14