19
D
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16. Chain stitch needle guard to needle clearance
Check:
1. Remove needle plate.
2. Insert 2 new needles (Nm 90) in needle "C" and "E" positions.
3. Turn the handwheel in the normal direction until the chain stitch looper
point, when moving to the left, is precisely behind needle "C" .
4.It should be a clearance of 0 - 0.08 mm between to the chain stitch front
needle guard and the needle.
Setting:
1. Turn the handwheel in the normal direction until the chain stitch looper
point, when moving to the left, is precisely behind needle "C" .
2. Slightly loosen the two screws (D).
3. Push the front needle guard back and forth to obtain a clearance of 0-0.08mm bet-
ween needle.
4. Tighten the screws (D).
5. Recheck
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