– 40 –
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power o and ascertaining that the motor is at rest.
Adjustment of the amount of oil in the hook is per-
formed with oil amount adjustment screw
.
Adjustment procedure
Tighten (turn clockwise) oil amount adjustment
screw
to increase the amount of oil in the hook, or
loosen (turn counterclockwise) to decrease it.
1. When adjusting the amount of oil in the hook, perform the adjustment in a way of reducing
the oil amount after somewhat increasing it.
2. The amount of oil in the hook has been adjusted at the max. sewing speed at the time of de-
livery. When you always use the sewing machine at low sewing speed, there is a possibility
that trouble occurs due to the lack of amount of oil in the hook. When the sewing machine is
used always at low sewing speed, perform the adjustment of the amount of oil in the hook.
3. There is a possibility of causing oil leakage from the hook shaft section since oil does not
return to the oil tank when oil amount adjustment screw
is used in fully-tightened state.
Do not use the screw in fully-tightened state. In addition, when the amount of oil in the hook
is not obtained unless oil amount adjustment screw
is near in fully-tightened state, it is
considered that hook shaft oil wick (JUKI Part No. 11015906) is clogged or the like. Replace
the hook shaft oil wick.
For the replacing procedure, refer to "6-1-3. Replacing procedure of the hook shaft oil wick"
p.122.
4-11. Adjusting the amount of oil in the hook
Decrease
Increase
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