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Motor Belt Tension - Brother SL100 Service Manual

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Adjustment
[Standard]
The spring should be hooked on the groove which the spring was hooked on at release.
* Normally on the center groove
The clearance between the M tension pulley stopper and the motor tension pulley holder
should be 0.5 ±0.2 mm (0.3 to 0.7 mm).
[Adjustment]
1. Turn off the power, and then remove the foot controller.
2. Remove the face plate assy and the pattern selecting dial, and remove the front cover assy and the rear cover
assy.
3. Check the location of the groove with spring hooked on.
4. Loosen the screw of the M tension pulley stopper.
5. Turn the M tension pulley stopper, and adjust the clearance between the M tension pulley stopper and the
motor tension pulley holder.
6. Tighten the screw of the M tension pulley stopper to secure the M tension pulley stopper to the tension pulley
holder B.

Motor belt tension

Motor tension pulley holder
Motor belt
4 - 6
M tension pulley stopper
0.5 ±0.2 mm
(0.3 - 0.7 mm)
Spring
Tension pulley
holder B
Screw
Screw, Pan (S/P washer) M4X8

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