White 312 - MACHINE MAINTENANCE: CLEANING AND OILING; Cleaning Shuttle Race and Hook Assembly; Cleaning the Feed Dog Mechanism

MAINTENANCE
(CLEANING
AND
OILING)
Cleaning
shuttle
race
(A)
Latch
knob
(B)
Shuttle
race
cover
(C)
Shuttle
hook
1.
Raise
needle
to its
highest
position.
2.
Take
out bobbin
case.
3.
Turn
latch knob
A as
illustrated.
4.
Take
off
shuttle
race
cover.
5. Take
out shuttle
hook.
6, Clean and
oil
shuttle race
and
hook,
then
replace in
the reverse
order.
Open
face cover
and
oil
points
indicated.
C
Cleaning
feed
dog
— 25 —