Pfaff hobbylock 4860 Owner's Manual - Page 79
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Problem Cause The machine does not operate although the main switch is switched on. The electric power has been cut. The fabric is not trimmed neatly. Lint between the upper and lower knife. The lower knife is blunt, Solution Close the looper cover (see page 12). Clean the knife (see page 73). Change lower knife (see page 71). Gathering of the seam. The thread tension is too tight. The differential feed is incorrectly set. The thread is incorrectly thread and has got caught Reduce thread tension (particularly for light fabrics see page 38 - 42). Correct differential feed (see page 25, 26). Thread correctly (see page 13 - 18). 75
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Gathering
of
the
seam.
The
thread
tension
is
too
tight.
The
differential
feed
is
incorrectly
set.
The
thread
is
incorrectly
thread
and
has
got
caught
Reduce
thread
tension
(particularly
for
light
fabrics
see
page
38
—
42).
Correct
differential
feed
(see
page
25,
26).
Thread
correctly
(see
page
13
—
18).
Problem
Cause
Solution
The
machine
does
The
electric
power
has
Close
the
looper
cover
not
operate
although
been
cut.
(see
page
12).
the
main
switch
is
switched
on.
The
fabric
is
not
Lint
between
the
upper
Clean
the
knife
trimmed
neatly.
and
lower
knife.
(see
page
73).
The
lower
knife
is
blunt,
Change
lower
knife
(see
page
71).
75