Adjusting the sewing foot stroke
40 Service Instructions 171/173 - 00.0 - 01/2020
9 Adjusting the sewing foot stroke
The height of the sewing foot stroke depends on the needle bar stroke of
the class and the needle system used.
As a general rule, the sewing foot stroke is:
• 5 mm in needle system 934
• 10 mm in needle system 933
If the settings are higher and the material passing through is thicker, make
sure the needle bar / the needle block does not come into contact with the
sewing foot during sewing.
9.1 Adjusting the sewing foot stroke for presser feet
Fig. 28: Adjusting the sewing foot stroke for presser feet (1)
To adjust the sewing foot stroke for presser feet:
1. Unscrew screws (1) and (2) by a few turns.
The sewing foot sole must rest on the throat plate.
To do so, turn the handwheel accordingly.
2. Place an object between sewing foot sole and throat plate that corre-
sponds to the thickness of the sewing foot stroke.
CAUTION
Risk of injury from moving parts!
Crushing possible.
Switch off the machine before adjusting the sewing
foot stroke.
(1) - Screw (2) - Screw
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