Motor Belt Tension - Baby Lock Mid-Line Machines Technical Training Manual

Adjustment
[Standard]
4.5 ± 0.5 mm (4 to 5 mm) slack should be made by pushing the motor belt at the middle of
timing pulley shaft and motor T-pulley shaft with a force of 0.98 N (100 gf).
[Adjustment]
1. Remove the front cover assy. (Refer to "2-7".)
2. Remove the 2 screws A to remove the belt guard.
3. Loosen the 2 screws B of the motor holder.
4. Move the motor holder up and down to adjust the tension of the motor belt.
5. Tighten the 2 screws B of the motor holder to secure the motor holder to the arm bed.
XC2277001
Screw A
Taptite, Bind B M3X10
Screw B
Upset M4X12DB

Motor belt tension

Push pull gauge (5N)
Belt guard
Screws A
4 - 7
33
Timing pulley
Motor belt
0.98 N (100 gf)
4.5 ±0.5 mm
(4 - 5 mm)
Motor holder
Motor T-pulley
Screws B