Brother International LK3-B432E MKII Instruction Manual - English - Page 45

Adjusting the needle up stop position, 10-13. Adjusting the thread wiper

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10 . STANDARD ADJUSTMENTS 10-12. Adjusting the needle up stop position The needle up stop position is adjusted so that the index mark w on the machine pulley q is inside the mark r on the belt cover e. If adjustment is necessary, loosen the screw t at the "U" mark of the machine pulley q and adjust the po- sition of the machine pulley q. The machine pulley q e stops later if it is turned clockwise, and it stops earlier if it is turned counterclockwise. NOTE: r The screw y at the "D" mark is an adjusting screw for the needle down detection function and is adjusted to match q the feed timing, so it should not be loosened. The screw u is a screw for detecting the machine stop position, and should not be loosened. w t * If the index mark w is not inside the mark r when y u the sewing machine is started, error code "E-50" will be displayed. Turn the machine pulley to move the index mark w to the correct position and then start the sewing machine. 10-13. Adjusting the thread wiper q 2±0.5mm we r t Approx. 20mm 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. 39 LK3-B430E-, B431E-, B432E-, B433E- Mark II

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39
LK3-B430E-, B431E-, B432E-, B433E- Mark II
2
±
0.5mm
q
w
e
Approx.
20mm
r
t
10-12. Adjusting the needle up stop position
The needle up stop position is adjusted so that the
index mark
w
on the machine pulley
q
is inside the
mark
r
on the belt cover
e
.
If adjustment is necessary, loosen the screw
t
at the
"U" mark of the machine pulley
q
and adjust the po-
sition of the machine pulley
q
. The machine pulley
q
stops later if it is turned clockwise, and it stops earlier
if it is turned counterclockwise.
NOTE:
The screw
y
at the "D" mark is an adjusting screw for the
needle down detection function and is adjusted to match
the feed timing, so it should not be loosened.
The screw
u
is a screw for detecting the machine stop
position, and should not be loosened.
* If the index mark
w
is not inside the mark
r
when
the sewing machine is started, error code "E-50" will
be displayed. Turn the machine pulley to move the
index mark
w
to the correct position and then start
the sewing machine.
10-13. 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
u
w
q
e
r
t
y