Brother International LK3-B434E MKII Instruction Manual - English - Page 48

Adjusting the thread wiper

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10-11. Adjusting the thread wiper [Solenoid type] 10. STANDARD ADJUSTMENTS q 2 ± 0.5 mm we r t Approx. 20 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 ± 0.5 mm when the thread wiper is aligned 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] t q 2 ± 0.5 mm we r Approx. 30 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 ± 0.5 mm when the thread wiper is aligned 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. LK3-B434E Mark II 42

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42
LK3-B434E Mark II
2
±
0.5 mm
q
w
e
Approx.
20 mm
r
t
10-11. Adjusting the thread wiper
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
±
0.5 mm when the thread wiper is aligned
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.
10. STANDARD ADJUSTMENTS
[Solenoid type]
2
±
0.5 mm
q
w
e
Approx.
30 mm
r
t
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
±
0.5 mm when the thread wiper is aligned
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.
[Pneumatic type]