– 31 –
5) Adjustment of normal/reverse stitching
1. Pinch a piece of paper beneath the presser hardware and set the
feed dial graduation at 3.
2. Remove the window plate (6 pcs.) of the sewing machine.
* If it is difficult to work, or in the case of the AK-type machine head,
work should be carried out after the pulley cover has been
removed. Refer to [(14)-1) Adjustment of the pulley cover].
3. Loosen a feed adjusting pin setscrew . Using a 10mm hexagon
head spanner, turn the feed adjusting pin for forward/reverse
adjustments.
4. By turning the flywheel by hand in forward direction, confirm that the
normal and reverse pitches coincide with each other.
5. When coincidence is confirmed, tighten the one feed adjust pin
setscrews .
6) Adjustment of Feed 0
1. Method by removing the gear box cover (standard adjustment)
* Set the chamfered section of the feed adjusting pin on the
bed side.
(See the drawing at left.)
(1) Set the feed dial graduation at 0.
(2) Remove the gear box cover.
Refer to [3. – (7) Lubrication –6] Removal/mounting of the gear box
cover].
(3) Loosen three setscrews of the auto-reverse feed solenoid
and remove this auto-reverse feed solenoid .
(4) Loosen the feed changing arm B setscrew .
(5) Adjust the feed adjusting link A and the feed adjusting link B
so that they are aligned in a straight line. Tighten them with the feed
changing arm B setscrew .
(6) Pinch a piece of paper beneath the presser hardware and turn the
flywheel by hand in forward direction to see that the paper is not
fed.
(7) Tighten three setscrews of the automatic reverse feed solenoid
.
Refer to [3.-(8)-8) Installation of the reverse feed solenoid.]
o The chamfered section of the
feed adjusting pin should be ad-
justed on the bed side.
oUnder the condition that the feed
adjust pin is pressed, tighten
the one feed adjust pin setscrews
. Pay attention so that there is
no presence of thrust rattling.
o When normal/reverse stitching is
adjusted, the Feed 0 position
begins to be shifted slightly.
o Adjustment of the Feed 0 position
results in slight displacement of
normal/reverse stitching.
Adjustment Procedure Results of Improper Adjustment
To Next Page
Loading...
Need help?
General
