Check And Adjust Axial Play - Janome QMP16SU Manual

Check and Adjust Axial Play

Axial or end play on shafting can result in noise, wear and faulty sewing.
Check #1: Main Shaft
Check the main shaft by pushing and pulling on the
hand wheel.
 NOTE: A small amount of main shaft axial
play is permissible. Too much main shaft
play, however, may cause noise and or
stitching issues. Minimal to no play is
desired.
Adjust if necessary
Tool: 2.5 mm handle hex wrench and "L" hex tool
1. Remove the machine's front cover.
2. Loosen the brass counterweight screws.
3. Adjust so that there is minimal to no play.
4. Provisionally set the screws.
5. Check that the shaft has minimal play and no
tightness from the collar being too tight. Do
this by rotating the shaft through a few 360°
rotations. Readjust if necessary.
6. Fully tighten the screws on the brass
counterweight. Using a "L" hex tool is
recommended.
7. Check the shaft again for play or tightness.
Check #2: Hook Shaft
Check the hook shaft by pushing and pulling the
hook toward the rear and front of the machine.
 NOTE: Any axial play from front to back on
the hook shaft, affects the needle distance
adjustment of the hook timing and will make
it impossible to time the machine accurately.
Remove play here
Check for play left to right.
QMP16SU Service Manual
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