Pfaff coverlock 4872 Instruction Manual page 28

The needle(s) must always be threaded last
so that the needle threads do not run under
the looper thread as seen in drawing 1, but
instead over the looper thread as depicted
in drawing 2. Should this sequence not be
followed, thread breakage or missed
stitches can occur.
Changing a spo& on a threaded machine
Cut the threads off close to the spool and re
place with new spools. Tie together the thre
ads which are still in the machine with the
new threads, and pull the threads out of the
needles, Activate tension release key 10
(also refer to page 40). Pull on the needle
threads until the knots are about 6 inches
(15 cm) past the last thread guide in front of
the needles. Cut the knots off and pull the
threads through the respective needle eyes.
The looper threads can be pulled continu
ously past the looper eye and placed to the
left underneath the presser foot.
mportant note on threading If the looper threads break, you must pull
the needle threads out of the needle,
rethread the looper thread and then
rethread the needle threads.
24