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25. Tilt of the feed dog
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
B
A
❶
a Front up
c Front down d Gauge
26. Adjusting the feed timing
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
❹
❶
❷
❸
a
b
c
b Standard
A
Standard feed timing
Advanced feed timing
Delayed feed timing
1) The standard tilt (horizontal) of the feed dog is
obtained when marker dot A on the feed bar
shaft is aligned with marker dot B on feed rocker
d
❶.
2) To tilt the feed dog with its front up in order to
prevent puckering, loosen the setscrew, and
turn the feed bar shaft 90˚ in the direction of the
arrow, using a screwdriver.
3) To tilt the feed dog with its front down in order to
prevent uneven material feed, turn the feed bar
shaft 90˚ in the opposite direction from the arrow.
Whenever the feed dog tilt is adjusted,
the feed dog height will be changed. So, it
is necessary to check the height after tilt
adjustment.
1) Remove rubber plug ❹ from the top surface of
the machine arm.
2) Loosen setscrews ❷ and ❸ of feed eccentric
cam ❶ through adjustment hole A. Adjust the
feed timing by moving the feed eccentric cam
in the direction of the arrow or in the opposite
direction of the arrow. Then, firmly tighten the
setscrews.
3) For the standard adjustment, adjust so that the
top surface of feed dog and the top end of needle
eyelet are flush with the top surface of throat
plate when the feed dog descends below the
throat plate.
4) To advance the feed timing in order to prevent
uneven material feed, move the feed eccentric
cam in the direction of the arrow.
5) To delay the feed timing in order to increase
stitch tightness, move the feed eccentric cam in
the opposite direction from the arrow.
Be careful not to move the feed eccentric
cam too far, or else needle breakage may
result.
– 18 –
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