Pfaff 433 - Dismantling the Hook

To do this, reach through the hole in the middle of the dress guard under
the table
and pull out pin d (Photo 18). Now pull the knee lifter with its
shaft forward out of its bearings. This done, tilt the machine back and resi
it on the wooden machine rest pin or on the base of the swung-away sew-
light bracket.
18. Dismantling the Hook
Skilled operators who make it a routine olways to begin or Finish a sean>
with the take-up lever in its highest position or to lay the threads (boick
under the presser foot when commencing to sew will hardly ever encounter
thread jamming in the hook race.
If thread should happen to jam in the hook race, try to get a hold of the
end of the thread tind to pull it out while turning the balance wheel back
and forth slightly. If this action fails to free the jammed thread, dismantle
the hook os instructed below:
Photo 14
17
From the library of: Superior Sewing Machine & Supply LLC