Pfaff 3117 - Bobbin Trimmer Drive Linkage

Adjustment
14 - 40
Fig. 14 - 38
9
8
3
4
10
1
2
7
6
5
● Loosen nut 5 and turn screw 6 back a few turns.
● Set screw 6 against lever 7 and turn screw 6 another 1/4 of a turn.
● Tighten nut 5.
● Loosen nut 8 and screw 9.
● Turn linkage 10 according to requirement 2.
● Tighten screw 9.
● Tighten nut 8.
On machines with buttonhole trimmer the catching lug must be behind the
cutting slot.
14.16 Bobbin thread trimmer drive linkage
Requirement
1. Roller 1 must not be in contact with end 2 of the cam.
2. In basic position knife guide 3 must be parallel to needle hole 4.