Motor Belt Tension Adjustment - Baby Lock BLSY Service Manual

Adjustment
1. Loosen the Upset M4X12DB securing the motor holder.
2. Adjust the position of the motor holder so that the belt deflects 1.5 to 3.5 mm when a force of 0.98N (100g) is
applied to the center of the belt.
3. Tighten the Upset M4X12DB to secure the motor holder.
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Motor belt tension adjustment

0.98N (100g)
Upset M4x12DB
Motor holder
1.5-3.5mm