Adjustment

12.05.16 Hook bearing bracket

Requirement

The hook shaft must be touching the hook bearing bracket adjustment gauge 1 at the top and the side.

2

1

438 - 439

418-419

81-075

1

4

3

81-076

Fig. 12 - 17

●Loosen screw 3.

●Swing the bobbin case opener to the right and remove the hook.

●Loosen screw2 and loosen the draw key underneath it by lightly tapping the head of the screw.

●Screw on the hook bearing bracket adjustment gauge.

●It must be possible to read the numbers "438-439" from the front.

●Move or turn hook bearing bracket4 in accordance with therequirement.

●Tighten screw2.

●Adjust the bobbin case opener in accordance withsubsection12.05.21Bobbincase openerposition.

12 - 18