SINGER W7911 - Manual (Page 18)

18
TROUBLE CHART
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‘■'""Trouble Probable Cause
Correction
If Machines
Binds
Threadier lint in
raceway
1—With take-up lever in highest position, tilt
head back on hinges and remove bobbin
case.
BOBBIN
CASE
CLAMPS
OBBIN
LATCH
2— Turn clamps outward and remove race cover.
3— Remove hook.
4— Clean Thread and lint from all parts, includ­
ing race.
5— Run a drop of oil along rim of hook.
6— Replace hook, then race cover. Snap clamps
into place.
T—Grasp threaded bobbin case by latch and
replace, fitting tongue into notch of race
cover.