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Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
3) Automatic presser foot lifter (Machine with thread trimmer
only)
1. Loosen cylinder nut 1 and adjust the screwing amount of
cylinder connecting screw 2 so that the height from the top
surface of the throat plate to the bottom surface of the presser
foot becomes 16±0.5 mm.
™ Turn in the direction A / Lifting amount is increased.
™ Turn in the direction B / Lifting amount is decreased.
After the adjustment, check that there is a clearance of 0.5 to
1.5 mm between automatic presser foot lifter lever A 3 and
thread tension release plate 4 when the presser foot is
lowered.
When the lifting amount is higher
than the specified value :
™ The top end of the needle bar
interferes with the walking foot
and the walking foot may be
damaged when the presser foot
is raised.
When the lifting amount is lower
than the specified value :
™ The presser foot is not sufficiently
raised and the working property
may be deteriorated.
1. Set the stitch dial to “0”.
2. Remove timing belt 3.
3. Turn the handwheel to bring the needle bar to the lowest dead
point of its stroke.
4. Turn screw No. 2 1 so that it is parallel to top surface 2 of the
machine bed.
5. Fit timing belt 3 to lower sprocket 4.
(Caution) The illustration is as observed from the handwheel side.
™ Stitches wil be poorly tensed.
™ Feed timing and needle to hook
timing will vary.
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