20. Setting the lateral clearance to the cover stitch needle (D)
Requirement:
When the two thread chainstitch looper is at its right point of reversal 16, the clearance of the looper
eye to needle “D” should be 6.2 mm (fig. 35).
When this clearance is set correctly, the clearance of the two thread chainstitch looper 16 to the needle
is 2.5 mm (fig. 35a).
Check:
● Turn the handwheel in the normal direction until the two thread chainstitch looper is at its right
point of reversal.
● Check the clearance of 6.2 mm.
Setting:
● Turn the handwheel in the normal direction until the two thread chainstitch looper 16 is at its right
point of reversal.
● Loosen the screw 19.
● Set the clearance of 6.2 mm .
● Turn the screw 19 slightly.
Test:
● Check the clearance using the adjsutment gauge (measurement F).
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