27 MA_VEB100-2-4-5_A5-3_230123_en.doc
3.2.2 Adjusting the needle stroke (Fig. 12, Fig. 13 and Fig. 15)
For a loop stroke of 2.3–3.0 mm, the needle stroke must be set to that the left side of
the needle’s eye is approx. 1.0 +0.5 mm away from the large gripping finger when the
tip of the large gripping finger is above the centre of the needle (Fig. 15).
The head cover must be removed for the adjustment. After removing (hex key size 4)
screw (1) shown in Fig. 13, the ball pin (2) shown in Fig. 12 can be adjusted using a
slotted screwdriver.
In the horizontal position, insert the ball pin so that the slot of the ø6 bolt stands
vertically beneath the ø7 bolt.
Rotating it clockwise will result in a larger needle stroke while turning it in the opposite
direction will create a smaller needle stroke.
The distance between the ball pin and needle shaft is 2 ±0.5 mm. After adjusting the
needle stroke, the needle lever must be configured as described in section “3.2.1
Assembly”.
Tighten the screw (1) shown in Fig. 13.
Check the looper and needle movement by turning the main shaft using the
handwheel.
Fig. 12
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