Pfaff 75 Owner's Manual - Page 27

Trouble, Shooting

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Trouble Shooting 1. Machine Skips Stitches Cause: Needle incorrectly inseted. Wrong needle. Needle bent, Machine threaded improperly. Needle too fine or too thick for the thread. 2. Needle Thread Breaks Cause: The above-mentioned may cause thread breakage. Thread tension too tight. Poor, knotty or rotten thread used. Rook raceway is jammed with thread or needs oiling. Burrs or sharp edges on needle plate slot. Remedy: Push needle up as far as it will go and be sure that the long groove faces toward jou, and flat side of shank away from you. Choose the correct needle from chart on page 14. (For ordinary sewing, jse System 130 R needles.) Insert new needle. Check and correct threading as instructed on pages 16 and 17. Use correct needle and thread (see chart an page 14.) Remedy: See remedies listed under 1. above. Adjust tensions as instructed. Use good quality threads only. Clean and oil hook raceway. Polish needle plate slot with fine emery cloth. 27

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Trouble
Shooting
1.
Machine
Skips
Stitches
Cause:
Remedy:
Needle
incorrectly
inseted.
Push
needle
up
as
far
as
it
will
go
and
be
sure
that
the
long
groove
faces
toward
jou,
and
flat
side
of
shank
away
from
you.
Wrong
needle.
Choose
the
correct
needle
from
chart
on
page
14.
(For
ordinary
sewing,
jse
System
130
R
needles.)
Needle
bent,
Insert
new
needle.
Machine
threaded
improperly.
Check
and
correct
threading
as
instructed
on
pages
16
and
17.
Needle
too
fine
or
too
thick
for
the
thread.
Use
correct
needle
and
thread
(see
chart
an
page
14.)
2.
Needle
Thread
Breaks
Cause:
Remedy:
The
above-mentioned
may
cause
thread
See
remedies
listed
under
1.
above.
breakage.
Thread
tension
too
tight.
Adjust
tensions
as
instructed.
Poor,
knotty
or
rotten
thread
used.
Use
good
quality
threads
only.
Rook
raceway
is
jammed
with
thread
or
Clean
and
oil
hook
raceway.
needs
oiling.
Burrs
or
sharp
edges
on
needle
plate
slot.
Polish
needle
plate
slot
with
fine
emery
cloth.
27