Adjustment

13.05.22 Modifying the needle bar stroke

The needle bar stroke is preset in the factory according to requirement. The needle bar stroke can be modified later if specific operating conditions make it necessary to do so.

3

1

2

- +

Fig. 13 - 22

When the needle bar stroke is altered, it is absolutely necessary to readjust the needle height! With a 36 mm needle bar stroke, the maximum speed must be limited to 3800 spm.

● Via the hand wheel, turn crank 1 until the screws 2 can be accessed from the side opening of the housing.

●Turn eccentric 3 (screws 2) as far as possible toward "+" (= large needle bar stroke) or toward "-" (= small needle bar stroke).

●Adjust needle height (see chapter 13.05.02 Preadjusting the needle height and/or chapter 13.05.14 Needle rise, hook-to-needle clearance, needle height and bobbin case position finger).

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