Timing Of Upper Looper And Lower Looper - Husqvarna VIKING HUSKYLOCK 936 Service Manual

8. TIMING OF UPPER LOOPER AND LOWER LOOPER

CHECK
When point of upper looper (A) is aligned with back of upper end of lower looper,
the clearance between the point of the upper looper and the hole of the lower looper
should be 3.8 mm.
ADJUSTMENT
1.Align the point of the upper looper with back of upper end of the lower looper by turning
the handwheel towards you.
2.Loosen cam the screws (B) on the driver cam (E) and adjust the position of the upper
looper so that the clearance between the point of the upper looper and the surface of
the lower looper is 3.8 mm.
3.Tighten the screws (B).
N.B. That (G) is equal to the distance (H).
C= Upper looper
D= Lower looper
F= Lower shaft
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