Service manual

S-4000 ISBH+I Omron
Revised 12/2008
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4. NEEDLE BAR
1. Needle bar crank position
Turn the handwheel ➎ and loosen the screw ➊ in the
needle bar crank ➋. Turn the handwheel until the
needle bar reaches the upper position. Pulley screw ➌
on the main shaft should be in the same line with
screw ➍. Tighten the screw ➊.
NOTE: The needle bar should be in the top dead center
position when the screw ➌ is at 12 o‘clock. To check,
turn the handwheel clockwise and counter clockwise.
The needle bar must move downward in either
direction. The needle ➓ makes its first stroke into the
right side of the throat plate.
2. The needle bar height adjustment
Adjust the needle bar ➏ height to 16 mm (5/8“) from
the surface of the throat plate ➐ to the upper edge
of the needle eye. Use height gauge ➒.
Loosen the set screw ➑ and move the needle bar up
or down as necessary.
E - MACHINE ADJUSTMENTS