2.3 Crank pin at the arm shaft
The distance between the eccentric crank pin 1 and the arm shaft 4
determines the needle bar stroke and thus the upper dead centre of
the needle bars.
ATTENTION !
The crank pin 1 has been precisely set by the manufacturer!
After exchanging the thread lever the crank pin 1 has to be readjusted.
The adjustment of the crank pin 1 is done with the gauge 7
(Order No. 0246 002591).
It is not necessary to remove crank and arm shaft for the adjustment.
10
4
7
1
1
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