Adjustment
40
13.07 Adjusting lifting lever without subclass -911/97
Rule
When the knee lever is activated
1. The roller presser must lift 5 mm off the needle plate and
2. The tension discs of the thread tension must be 0.5 mm apart.
O Check and make the adjustment as explained in chapter 13.04.13 Clearance between
roller presser and needle plate.
O Turn the linkage 1 ( nut 2 ) according to rule 1.
O Adjust the lever 3 ( screw 4 ) according to rule 2.
O Check if the raised hand lever lowers under its own weight when the knee lever is
activated; readjust the linkage 1 accordingly if necessary.
Fig. 11 - 35
3
4
2
1
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