Service manual

S-4000 ISBH+I Omron
Revised 12/2008
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2. Bite width adjustment
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. Centering the bite over the throat plate
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