Puller
50 Service Instructions 171/173 - 00.0 - 01/2020
11.3 Adjusting the lift stroke of the carrier roller
Fig. 39: Adjusting the lift stroke of the carrier roller
Proper setting
Upper end position: The raised carrier roller must not come into contact
with the sewing foot.
Lower end position: After the carrier roller has been placed on the throat
plate, the rocker (7) must still be deflecting by approx. 2 mm before
the stop of the lever (1) reaches its end position. This will slightly tension
the sewing material while the roller is being placed.
Adjusting the upper end position
To adjust the upper end position:
1. Turn the bolt (3) until the slot is vertical.
2. Limit the piston stroke in the cylinder (4) with the screw (2).
Use a 2.5 mm allen key.
Adjusting the lower end position
Important
The steel carrier rollers must not rest on the throat plate.
There must be a gap of approx. 0.2 mm between carrier roller and throat
plate.
To adjust the lower end position:
1. Loosen the counternut (5).
2. Turn the threaded pin (6).
3. Tighten the counternut (5).
(1) - Lever
(2) - Screw
(3) - Bolt
(4) - Cylinder
(5) - Counternut
(6) - Threaded pin
(7) - Rocker
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