Adjusting The Amount Of Oil In The Hook - JUKI LZ-2280B Instruction Manual

7. Adjusting the amount of oil in the hook
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 off and ascertaining that the motor is at rest.
1. After the adjustment, idle the sewing machine at the sewing speed to be used for sewing
about 30 seconds. Then, check the oil quantity by comparing with the sample which shows
the appropriate oil splash (marks).
2. When adjusting the amount of oil in the hook, perform the adjustment in a way of reducing the
oil amount after somewhat increasing it.
3. The amount of oil in the hook has been adjusted at the max. sewing speed at the time of deliv-
ery.
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.
4. Oil may leak from the hook driving shaft section if oil amount adjustment screw ❶ is fully
loosened during operation. Do not use it with fully loosened. If the required amount of oil is
not fed to the hook unless oil amount adjustment screw ❶ is nearly fully loosened, the hook
driving shaft oil wick (JUKI part number: 11015906) may have problems such as clogging. In
such a case, replace the hook driving shaft oil wick with a new one.
5. Never adjust screw ❷ of the hook oil quantity adjusting valve since it is fixed.
❶
❷
– 10 –
Tilt the machine head, and adjust the amount of oil in
the hook by turning the oil amount adjustment screw
❶ mounted on the gear box B.
Turn the adjusting screw in the "+" direction (counter-
clockwise) to increase the amount of oil in the hook.
Turn the adjusting screw in the "–" direction (clock-
wise) to decrease it.