33
13) Clearance adjustment of hook and
opener
Bring the opener
①
to the hook
②
as close as possible and
loosen the fixing screw
③
of the opener. Adjust the opener
manually to allow 0.5~0.7 mm of clearance between the
hook stopper
④
and the groove of the needle plate
⑤
, and
tighten the fixing screw
③
of the opener.
14) Lubrication adjustment of hook
A. Checking the oil supply level of hook
After racing the sewing machine for three minutes,
secure the oil flow checking paper on the right side of
the hook and run the machine at a maximum speed for
ten seconds. (You may use any type of paper) As
shown in the figure, check the oil tape marked on the
paper.
B. Adjustment of the oil supply level
Make the adjustment when the quantity of oil supply is
not adequate.
ⓐ
Take off the sliding plate.
ⓑ
Turn the machine manually until you see the
adjusting screw
①
for the oil supply level of the
hook.
ⓒ
The amount of the oil supply will decrease when the
adjusting screw
①
is turned in a clockwise direction,
and increase when turned in a counterclockwise
direction. Check the level of the oil supply after
adjustment.
⑤
①
③
②
④
0.5~0.7mm
[Fig. 38]
[Fig. 39]
⑤
①
