6.4 Control cam
Rule:
1. There should be a clearance distance (A) = 0.05 to 0.1 mm between
the highest point on the control cam (1) and the roller (2).
2. The threads should be separate when the pointer on the handwheel
points from “40”to“45” on the scale.
–
Loosen the screws of the ring (3).
–
Loosen the screws of the cam (1).
–
Turn the cam (1) with its top against the roller (2). Shift the cam
laterally so that the distance between the cam and the roller is
(A) = 0.05 – 0.1 mm.
–
Shift the ring (3) to the right towards the cam (1) until it stops. Take
care that the hook timing (par. 4.1) is not destroyed.
–
Tighten the ring (3) screws.
–
Tighten the cam (1) screws so that the trimming knife (4) edge and
the fixed knife (5) edge flush at 40° - 45° on the hand wheel.
–
Check the setting of the distance according to rule 1, cam angle
according to rule 2, and hook timing according to par. 4.1.
Caution: Risk of injury!
Turnthemainswitchoff.
Proceed with the setting of the control cam only with the sewing
machine switched off.
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EN
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