Tilt Of The Feed Dog; Adjusting The Feed Timing - JUKI DDL-8700 Instruction Manual

20.

tILt oF tHE FEED DoG

WarNING :
to protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
B
A
1
a Front up b Standard c Front down
d throat plate
21.

aDJuStING tHE FEED tIMING

WarNING :
to protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
1
2
3
a
d
b
c
Standard feed timing
advanced feed timing
Delayed feed timing
– 10 –
) The standard tlt (horzontal) of the feed dog s ob-
taned when marker dot A on the feed bar shaft
s algned wth marker dot B on feed rocker 1 .
(DDL-8700H, the marker dot B nclnes forward
the feed rocker shaft by 90˚, as standard).
2) To tlt the feed dog wth ts front up n order to pre-
vent puckerng, loosen the setscrew, and turn the
feed bar shaft 90˚ in the direction of the arrow, us-
ng a screwdrver.
3) To tlt the feed dog wth ts front down n order to
prevent uneven materal feed, turn the feed bar
shaft 90˚ in the opposite direction from the arrow.
(The standard tilt for DDL-8700H.)
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.
) Loosen screws 2 and 3 n feed eccentrc cam 1 ,
move the feed eccentrc cam n the drecton of
the arrow or opposte drecton 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 tmng n order to prevent un-
even materal feed, move the feed eccentrc cam
n the drecton of the arrow.
4) To delay the feed timing in order to increase stitch
tghtness, move the feed eccentrc cam n the op-
poste drecton from the arrow.
Be careful not to move the feed eccentric
cam too far,or else needle breakage may
result.