Adjustment
11 - 21
11.23 Changing the needle bar stroke
The manufacturer sets the needle bar stroke as required.
If the operating conditions make it necessary, the needle bar stroke can be
changed.
After the needle bar stroke has been changed, it is absolutely necessary to
readjust the needle height!
● Using the balance wheel, turn crank 1
until the screws 2 become accessible from the
side opening of the housing.
● Turn eccentric 3 (screws 2) as far as possible towards " + " (= longer needle bar stroke)
or towards " - " (= shorter needle bar stroke).
● Adjust the needle height, see Chapter 11.05 Pre-adjusting the needle height.
Fig. 11 - 20
1
2
3
+
-
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