2.11 Synchronizer
Caution: Danger of injury!
Switchthemainswitchoff.
Adjust the synchronizer only with the sewing unit switched off.
Standard checking
After positioning the thread lever should be approx. 5 mm in front of
the top dead centre.
The distance between the synchronizer 2 and the cam segment 5
should amount to approx. 0.5 to 1.0 mm.
Correction
–
Loosen counternut 1.
–
Adjust the distance between synchronizer 2 and the maximum
outer diameter of cam segment 5.
Dimension=0.5to1.0mm.
–
Tighten counternut 1.
–
Turn the sewing machine in position “Thread lever 5 mm in front of
the top dead centre”.
–
Loosen screws 4.
–
Turn the cam segment 5 in such a w ay that the switching cam 3 is
positioned exactly on the synchronizer 2.
–
Tighten screws 4.
–
Check the positioning after sewing and correct, if necessary.
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