10-11.Adjusting The Thread Wiper - Brother LK3-B434E MKII Instruction Manual

10-11. Adjusting the thread wiper
[Solenoid type]
2 0.5 mm
1. Loosen the set screw w and move the wiper arm support e up or down to adjust so that the clearance
between the top of the thread wiper and the needle point q is 2
with the center of the needle.
* Before carrying out this adjustment, check that the needle bar is lowered 5 to 5.5 mm from the needle up
stop position when the sewing machine stops.
2. Loosen the screw r and move the thread guide connecting plate t up or down so that the thread wiper is
approximately 20 mm from the needle when it is at the standby position.
[Pneumatic type]
2 0.5 mm
1. Loosen the set screw w and move the wiper arm support e up or down to adjust so that the clearance
between the top of the thread wiper and the needle point q is 2
with the center of the needle.
* Before carrying out this adjustment, check that the needle bar is lowered 5 to 5.5 mm from the needle up
stop position when the sewing machine stops.
2. Loosen the two bolts r and move the wiper solenoid cover t up or down so that the thread wiper is
approximately 30 mm from the needle when it is at the standby position.
q
q
LK3-B434E Mark II
10. STANDARD ADJUSTMENTS
w
e
Approx.
20 mm
0.5 mm when the thread wiper is aligned
w
e
Approx.
30 mm
0.5 mm when the thread wiper is aligned
r
t
t
r
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