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8. StANDArD ADJuStMENt
8-1. Adjusting the amount of oil in the hook (LZ-2290A-SS • A-SU (-7) )
WArNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
Decrease
Increase
1
8-2. Adjusting the amount of lubricating to face plate section (LZ-2290A-SS•A-SU(-7))
WArNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
It s not necessary to adjust the amount of lubrcatng to face plate secton snce t has been factory-
adjusted at the tme of delvery. (Ol amount adjustment screw 2 n the face plate secton lubrcatng tank
s hdden wth stop plug 1 snce t s not necessary to be adjusted.)
When the adjustment s performed by mstake (mstaken as the adjustment of ol amount n the hook), re-
adjust as shown below.
1
96
2
Adjustment of the amount of ol n the hook s per-
formed wth ol amount adjustment screw 1 .
(1) Adjustment procedure
Tghten (turn clockwse) ol amount adjustment
screw 1 to ncrease the amount of ol n the hook,
or loosen (turn counterclockwse) to decrease t.
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. number of revolution
at the time of delivery. When you always
use the sewing machine at low 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 speed, perform the adjust-
ment of the amount of oil in the hook.
3. There is a possibility of causing oil leak-
age from the hook shaft section since
oil does not return to the oil tank when
oil amount adjustment screw 1 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 1 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 (10) re-
placing the hook shaft oil wick of 9. MAIN-
tENANCE.
1) Remove stop plug 1 , and when lghtly tghtenng
the adjustment screw 2 , return the screw by ap-
proxmately 0.6 turn from the stop poston.
Lightly tighten the screw 2 . Be careful
that it is not excessively tightened.
2) In case of the normal state, the flow of oil can be
confrmed (drecton of the arrow n the llustra-
tion). In case the flow is stopped, be sure to ad-
just. (Worn-out of the mechansm of face plate
secton wll be caused.)
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