JUKI LU-2800 Series Engineer's Manual page 81

Adjustment procedures
② Forward/reverse stitch pitch of 2P feed adjustment
[Confirmation items before adjustment]
• Make sure that the forward/reverse feed adjustment is matching.
• Set the standard feed adjusting dial ❶ to "12". (Because of the
mechanism, the 2P pitch can not be more than the standard pitch.)
1. Turn ON the 2P switch, and check pitches of forward and re-
verse stitches.
• When forward feed pitches are large. ⇒ To step 2. to 4.
• When reverse feed pitches are large. ⇒ To step 5. to 7.
2. Return to standard pitch (Turn OFF the 2P switch.), loosen
clamping screws ❾ of the feed adjusting pin support arm B ❽ .
(Be careful to loosen too much.)
At this time, fix the feed adjusting pin support arm B ❽ so that
it does not move out of position.
Slightly tilt the reverse feed lever  and tighten clamping
3.
screws ❾ of the feed adjusting pin support arm B ❽ .
4. Return to step 1., check forward/reverse stitch length.
5. Return to standard pitch (Turn OFF the 2P switch.), loosen
clamping screws ❾ of the feed adjusting pin support arm B ❽ .
(Be careful to loosen too much.)
At this time, fix the feed adjusting pin support arm B ❽ so that
it does not move out of position.
Slightly turn the feed adjusting pin support arm B ❽ in the
6.
direction of the arrow in Fig. B, and tighten clamping screws ❾
of the feed adjusting pin support arm B ❽ .
7. Return to step 1., check forward/reverse stitch lengths.
Results of Improper adjustment
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