S-4000 LT
1-28
Revised 10/2004
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2.
B it e w id t h a d j u s t m e n t
To adjust the bite width, first remove the head cover for access to
adjustments.
The S-4000 ISBH is fitted with a regular bite throat plate
, that allows a
bite range of 1.5 mm (1/16“) to 2.3 mm (3-32“).
a)
loosen the adjusting screw
b)
to increase the bite width, raise the bite lever
c)
to decrease the bite width, lower the bite lever
d)
tighten the adjusting screw
3.
C e n t e r in g t h e b it e ov e r t h e t h r o a t p l a t e
a)
with the machine in the home position - loosen the
clamping screw
on the bite lever
b)
for rough adjustment, using the handwheel, rotate the
needle bar to its full down position and move the
needle to the right side of the throat plate slot
. Turn
the hand wheel to the second needle
➓
down stroke
and compare the needle position in the left side of the
throat plate. Continue adjusting until the needle is
roughly of equal distance from the right and left sides.
c)
tighten the clamping screw
d)
For finite adjustment loosen the screw
and rotate the excentric nut
. Tighten the
locking screw
.
correct
incorrect
E - MACHINE ADJUSTMENTS