Pfaff 467

22. Dismantling the Sewing Hook
Practised operators who have formed the habit of raising the take-up lever to its highest point
when beginning or ending a seam, or of laying both threads back under the sewing foot
when beginning to sew, will hardly ever encounter thread jamming in the hook raceway.
If thread should happen to jam in the raceway of the sewing hook, however, try to pull it out
as you turn the balance wheel back and forth slightly. If this action fails to free the jammed
thread, dismantle the sewing hook, as instructed below:
1. Pull out the knee lever and tilt the machine back.
2. Raise needle bar and take-up lever, provided the balance wheel can still be turned.
If not, begin by unscrewing bobbin case position finger bracket A (Fig. 27).
3. Loosen binding screw e (Fig. 29) and swing opener finger K forward out of the range
of action of the sewing hook.
4. Seize the bobbin case cap by its latch with thumb and forefinger and pull it out of the
machine together with the bobbin.
5. Let the sewing head down again and unscrew needle plate and feed dog.
6. Take out the three hook gib screws el. e2 and e3 (Figs. 26 and 28) and remove hook
gib d. Do not confuse hook gib d with thread pull-off flange f (Fig. 28).
Fig. 26
R 9486
30
From the library of: Superior Sewing Machine & Supply LLC