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2.
UPPER SHAFT AND LOWER SHAFT TIMING
Adjustment Standard
The alignment mark for the upper shaft horizontal feed cam pulley and the alignment mark for the lower shaft
timing pulley should be at the front of the sewing machine. (Turn the balance wheel forward.)
Adjustment Procedure
1.
Remove the timing belt from the upper shaft horizontal feed cam pulley section and the tension pulley and
the lower shaft timing pulley.
2.
Align the alignment mark for the upper shaft horizontal feed cam pulley and the alignment mark for the lower
shaft timing pulley with the front of the sewing machine.
3.
Hang the timing belt from the upper shaft horizontal feed cam pulley section and tension pulley and lower
shaft timing pulley.
Horizontal feed cam pulley
Alignment mark
Tension pulley
Alignment mark
Lower shaft timing pulley
