JUKI HZL-25Z, Руководство по обслуживанию

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SECTION
PAGE
2 - 8
1
2 - 8 Feed Dog Timing
Vertical Movement
* * Before checking, follow Section 2 - 5 Feed Dog Height.
Checking:
1. Set machine for maximum stitch length.
2. Turning hand wheel, move down feed dog.
3. Check if vertical clearance (P) between needle point and needle plate sur-
face is within the range of 4 - 6 mm when top of feed dog reaches needle
plate surface level.
Adjustment:
1. Remove base cover.
2. Loosen screw (2) of feed lifting cam (1).
3. Adjust feed dog timing to needle by slightly rotating feed lifting cam (1) in
either direction as shown.
To retard timing
ð
Turn the cam to A - direction.
To advance timing
ð
Turn the cam to B - direction.
4. Tighten screw (2) after adjustment.