White 951 - TROUBLE CHART

TROUBLE
CHART
Trouble
Probable
Cause
-
Correction
If
Machine
Thread
or lint
in 1—With
take-up
lever in
highest position,
tilt head
back
on
hinges
Binds
race
way
and
remove
bobbin case.
.
BOBBIN
CASE
BOBBIN
NOTCH
RACE
ccc
LATCH
RACE
COVER
HOOK CLAMPS
2—Turn
clamps
outward and
remove
race cover.
3—Remove
hook.
4—Clean
thread and
lint from
all parts, including
race.
5—Run
a
drop
of oil along
rim
of
shuttle.
6—Replace
shuttle, then
race cover.
Snap clamps
into place.
7—Grasp
threaded
bobbin case
by
latch
and
replace,
fitting
tongue
into
notch
of
race
cover.
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