Inner Hook Detent (Longitudinal Direction); Height Of The Feed Dog - ELNA E9020 Service Manual

(5) Inner hook detent (longitudinal direction)

[Longitudinal adjustment]
Loosen screw 1 in the inner hook detent, and align it with the
position in [Enlarged view of the related portion].
[Adjusting the direction of rotation of the inner hook]
Refer to the item of the automatic bobbin winding.
Confirm that a thread can come off the clearance provided between
the detent plate (left) of the inner hook and the inner hook , and the
clearance provided betweeen the hook cover support plate (right)
and the inner hook in terms of the direction of rotation of the sewing
machine.
(Perform the adjustment with thread #20 for jeans stitch when
installing the throat plate.)
Do not apply oil tp the race surface of outer hook and the race surface
of inner hook.
If they are applied with oil, the outer hook is closely fitted against the
inner hookbecause of oil. This will impair smooth slip-off of the thread
from the hook.

(6) Height of the feed dog

• Turn the handwheel until the feed dog projects the
most. Now, loosen 1 and turn screw 2.
• Set the feed amount to "0".
• Confirm that the height of the feed dog is adjusted to
1.1 ± 0.1 (with no load applied) at the rear end of the
feed dog.
How to adjust
[Enlarged view of the related portion]
How to adjust
1.1 ± 0.1
Rear side of the
sewing machine
Protruding amount of the feed dog 1.1 ± 0.1
(with no load applied)
Center is when these lines are aligned
with each other.
Error : ± 0.3 mm
Disassembly
Throat plate
Location of components to be adjusted
Adjustment drawing
1
Disassembly
Free arm bottom cover
Location of components to be adjusted
Adjustment drawing
1
2
20