Timing Belt Tension Adjustment - Baby Lock BLSY Service Manual

Adjustment

Timing belt tension adjustment

1. Loosen the pan head screw (S/P washer, M4X10) securing the tension pulley assembly.
2. Adjust the position of the tension pulley so that the belt deflects 2.95 to 3.05 mm when a force of 1.96N (200g) is
applied to the center of the belt.
3. Tighten the pan head screw (S/P washer, M4X10) to secure the tension pulley assembly.
2.95-3.05mm
1.96N (200g)
Screw, pan (S/P washer) M4x10
Tension pulley assembly
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