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Figure 18: Setting the upper stitch length adjusting wheel - Part 2
(1) - Upper stitch length adjusting wheel
(2) - Screw
(3) - Lower stitch length adjusting wheel
(7) - Frame for the stitch regulator gear
(8) - Plates for the stitch regulator gear
(9) - Opening
6. Check whether the frame (7) for the stitch regulator gear can be moved.
7. As soon as the frame (7) no longer moves:
8. Turn the scale (6) for the upper stitch length adjusting wheel (1) such
9. Place the upper stitch length adjusting wheel (1) onto the shaft (5).
10.Hold the upper stitch length adjusting wheel (1) using a star key.
11.Tighten the upper stitch length adjusting wheel (1) on the shaft (5) using
12.Important: Check whether the plates for the stitch regulator gear (8)
26
Tip: In machines that have a stitch adjustment lever, you can check
this by pressing the stitch adjustment lever.
In machines that do not have a stitch adjustment lever, you can insert
the locking peg or a hex key into the opening (9) and use it to try and
move the frame (7) up and down.
Remove the wrench from the shaft (5).
that the 0 is exactly next to the adjusting mark (4).
the screw (2).
are parallel to one another in this position.
If the plates (8) are not parallel to one another:
13.Remove the tension spring (10).
14.Loosen the clamping screw (11).
15.Manually position the plates (8) so that they are parallel.
16.Tighten the clamping screw (11).
17.Attach the tension spring (10).
Setting the stitch length adjusting wheels
(4) - Adjusting mark
(5) - Shaft
(6) - Scale
(10) - Tension spring
(11) - Clamping screw
Service manual H867 Version 00.0 - 08/2013
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