❶
A
B
a
b
c
d
❶
❷
❸
1) Loosen screws
❷
and
❸
in feed eccentric cam
❶
, move the feed eccentric cam in the direction
of the arrow or opposite direction of the arrow, and
firmly tighten the screws.
2) 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.
3) To advance the feed timing in order to prevent un-
even material feed, move the feed eccentric cam
in the direction of the arrow.
4) 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.
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
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.
a
Front up
b
Standard
c
Front down
d
Throat plate
Standard feed timing
Advanced feed timing
Delayed feed timing
22. Tilt of the feed dog
23. 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.
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.
– 14 –
Содержание DDL-7000A-7 Series
Страница 1: ...DDL 7000A 7 Series INSTRUCTION MANUAL ...
