S-4000 LT
1-27
Revised 10/2004
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5 . B I T E
Before the bite adjustment, remove the pulley cover
➋
and
the head cover
➊
.
1.
B it e c a m
a)
Check if the machine is in the home position.
b)
Tilt the machine on the rest pin
➐
. If the
adjustment is correct, the second cam locking
screw
➑
(counter clockwise of the bite cam
➒
)
must be roughly perpendicular to the bedplate
casting.
c)
Adjust the position of the bite cam so that all of
the needle bite motion occurs equally with the
needle out of the work piece on the up and
down stroke.
N o t e :
There must be no bite movement before the needle
➓
comes out of the work nor after it has
descended into the work - see illustration. Tighten both locking screws
➑
securely.
Bite
Needle
stroke
Needle upper position
E - MACHINE ADJUSTMENTS
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