Dürkopp Adler 366 Instructions For Mechanics Manual page 8

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2.3.3 Height of the needle bar
Rule:
In the loop
formation position
the hook point should
stand in the
groove of the
needle as deep
as possible, but
the hook bottom should
not knock against
the lower
slope of the groove
when, with the
maximum stitch width, left and right stitches are produced
(fig. 14).
Control:
- Adjust the maximum stitch width.
- Loosen the screws t/10.
- Shift the needle bar vertically.
2.3.4 Distance between the hook and the needle
Explanation:
Rule:
The distance
between the needle
and the hook point
should amount to
about 0.1 mm when, with the maximum stitch width, left and right
stitches are produced. (Fig. 15.)
Control:
- Adjust the maximum stitch width.
- Turn the machine by hand.
Correction:
- Swing out the bow B/18.
- Remove the cover ring D/18, the hook G/18 and the shuttle race
s/18.
- Add or remove the shims A/18.
- Remove the screw t/18 and the driver 1/18.
- Add or remove the shims C/18.
- Replace the driver and the hook.
Note:
If the distances between the hook point and the needle are not equal
when producing the stitches on the left and on the right, check the
adjustments 2.2.2 and 2.2.4.
2.3.5 Needle guide
Explanation:
When sewing, the needle may be deviated, so that the thread loop can
no longer be seized by the hook point.
Rule:
In the loop stroke position the point of the needle should touch the
needle guide without being deviated.