– 32 –
6-20-2 Presser-lifter position sensor
○
Remove the rear panel.
RemovetheentireunitofneedlethrowingSTMbase.
*Adjustthepositionofmeshofsensorgear
2
and the gear of sensor rack
5
with each other when installing press-
er-lifter position sensor mounting plate
1
. (See Fig. C.)
Adjustmentprocedure
1. Temporarily tighten setscrew
6
of the presser-lifter position sensor mounting plate.
2. Lift presser-lifter lever
3
. Move presser-lifter position sensor mounting plate
1
in the direction of the ar-
rowtoadjusttheheightofpresser-lifterpositionsensor
4
so that mark
A
on the gear
2
of presser-lifter
position sensor
4
is aligned with mark
B
on sensor rack
5
.
3. Tighten setscrew
6
of the presser-lifter position sensor mounting plate.
2
4
1
A
B
5
1
5
Needle throwing STM base
1
3
6
To be aligned
A B
Fig. C
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