Adjustment
31
13.05.08 Control cam (pre-calibrating)
Rule
The movement of the thread catcher 5 should start when the tripping lever 3 is dropped
in place and the point of the needle coming from b.d.c. is positioned 12 mm above the
needle plate.
O Quickly move the thread lever after t.d.c. by turning the handwheel and loosen the
accessible screws of the control cam 1.
O Continue turning the handwheel in the direction of rotation until the machine is in the
needle rise position and then activate the engaging lever 2.
O Loosen the remaining screws of the control cam 1, ensuring that the tripping lever 3 has
dropped in place.
O Continue turning the handwheel in the direction of rotation until the needle point is
positioned 12 mm above the needle plate.
O Turn the handwheel in the direction of rotation in this position until you feel resistance,
ensuring that the control cam 1 rests on the retaining collar 4.
O Tighten the accessible screws of the control cam 1 in this position.
O Make the remaining screws of the control cam 1 accessible and tighten them.
Fig. 13 - 26
1
1
1
2
4
5
3
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