Pfaff 339 Owner's Manual - Page 66

Remedy, Faults

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• r. 7. Cause and Remedy of Faults Remember: Many machine troubles are caused by non-observance of these instructions. In many cases faulty working of your ma dune can be remedied merely by c!eaning and ciIng. 4. The machine is dirty - clean it. 5. Unsuitable oil has been used - clean the machine with paraffin and oil it with approved oil. The niaclaine works Iieat'ilv: The machine is noisy: 1. Thread ends are caught up in the hook race - oil the hook, turn the handwheel and the hook back and forth as described on page 63. 1. Thread ends are lodged in the hook race - oil the hook, turn the handwheel and the hook back and forth as described on page 63. 2. The motor belt is too tight - adjust the 2. The motor belt is too slack - adjust regulating wheel (see page 66). the regulating wheel (see page 66). 3. Certain parts have run dry - oil them. 3. Certain parts have run dry - oil them. 68 ij

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7.
Cause
and
Remedy
of
Faults
Remember:
Many
machine
troubles
are
caused
by
non-observance
of
these
instructions.
In
many
cases
faulty
working
of
your
ma
dune
can
be
remedied
merely
by
c!eaning
and
ciIng.
The
niaclaine
works
Iieat’ilv:
1.
Thread
ends
are
caught
up
in
the
hook
race
—
oil
the
hook,
turn
the
hand-
wheel
and
the
hook
back
and
forth
as
described
on
page
63.
2.
The
motor
belt
is
too
tight
—
adjust
the
regulating
wheel
(see
page
66).
3.
Certain
parts
have
run
dry
—
oil
them.
68
The
machine
is
noisy:
1.
Thread
ends
are
lodged
in
the
hook
race
—
oil
the
hook,
turn
the
hand-
wheel
and
the
hook
back
and
forth
as
described
on
page
63.
2.
The
motor
belt
is
too
slack
—
adjust
the
regulating
wheel
(see
page
66).
3.
Certain
parts
have
run
dry
—
oil
them.
4.
The
machine
is
dirty
—
clean
it.
5.
Unsuitable
oil
has
been
used
—
clean
the
machine
with
paraffin
and
oil
it
with
approved
oil.
ij