Adjusting The Y-Carriage Belt Tension - Janome MB-7e Service Manual And Parts List

Push-pull gauge
Front end of the base frame
Setscrew A
Y-belt pulley

Adjusting the Y-carriage Belt Tension

1. Remove the spool stand, head set right cover and
left cover (see pages 4 to 6).
2. Shift the X-carriage to the extreme front end.
3. Shift the X-carriage to the extreme front end.
Set the push-pull gauge in line with the front end of
the base frame and push the Y-carriage timing belt.
The gauge should read 280 grams when the upper
portion touches the lower portion.
4. If the belt tension is too tight or loose, slightly loosen
the setscrews A (2 pcs.) and move the Y-belt pulley in
the direction of the arrow to adjust the belt tension.
Tighten the tow setscrews A securely and check the
tension again.
5. Attach the parts removed in step 1.
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