Front Reversal Point Of The Thread Catcher - Pfaff 900/51 Service Manual

Adjustment
2

Front reversal point of the thread catcher

.12
2-09
2 - 9
Requirement
In the front reversal point of the thread catcher 3 the rear edge of thread catcher cutout
should be 1 mm in front of the bobbin case position finger 4.
4
3
Fig. 2 - 08
Push balls of the connecting rod 1 onto the ball pins on the cutting and control units.
Loosen nuts 2 (right-hand and left-hand thread).
Position needle bar at t.d.c
Activate the engaging lever manually.
Bring thread catcher 3 to its front point of reversal by turning the hand wheel.
Turn connecting rod 1 in accordance with the requirement.
Lock connecting rod 1 by means of nuts 2.
2
1
2