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18) 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.
a) Take off the sliding plate (left)①.
b) Turn the machine manually until you see the adjusting screw② for the oil supply level of the hook.
c) The amount of the oil supply will decrease when the adjusting screw② is turned in a clockwise direction, and increase when turned
in a counterclockwise direction. Check the level of the oil supply after adjustment.
[ Fig. 61 ]
①
②
②
②
Excessive
Oil supply
Proper Oil
supply
Oil Tape
Insufficient
Oil supply
Caution
▶
When checking the oil level in the hook, keep your hands or oil flow
checking paper away from any moving parts including transfer tools, to
avoid injury.
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