Puller
Service Instructions 171/173 - 00.0 - 01/2020 49
4. Turn the handwheel to set the machine to position E.
The slots of pull rod (1) and eccentric (2) line up on top of each other.
5. Tighten the screws of the eccentric (2).
Checking synchronization
To check the synchronization of bottom feed and puller:
1. Set the adjusting wheels for bottom feed and puller to 3 mm.
2. Place 2 thin strips of cardboard end to end under sewing foot and
carrier roller.
3. Turn the handwheel.
The strips of cardboard must not shift against each other.
4. If necessary, correct the adjusting wheel of the carrier roller until
the feed is in sync.
5. Loosen the scale wheel for the carrier roller and fit it such that
the indicated value is 3 mm.
11.2 Adjusting the distance between carrier roller and needle
Fig. 38: Adjusting the distance between carrier roller and needle
Proper setting
The distance between the middle of the carrier roller and the middle of
the needle is 30 mm.
To adjust the distance between the carrier roller and needle:
1. Loosen the screw (1).
2. Adjust the distance.
3. Tighten the screw (1).
(1) - Screw
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