Honda 1998 VT750C Service Manual page 99

FUEL SYSTEM
INSPECTION
Inspect the needle for excessive wear at the tip,
bending or other damage.
Inspect the diaphragm for damage, fatique or pin
holes.
Inspect the vacuum piston for wear or damage.
Replace these parts if necessary.
Air will leak out of the vacuum chamber if the
diaphragm is damaged in any way-even a pin hole.
ASSEMBLY
/ /
JET NEEDLE SPRING
JET NEEDLE HOLDER
JET NEEDLE
HOLDER
Install the jet needle, spring and jet needle holder
to the vacuum piston.
Push the jet needle holder in and turn it in 90 degrees
clockwise.
Install the vacuum piston/diaphragm with the cavity.
Align the tab of the
Lift the bottom of the vacuum piston with your finger
diaphragm with the
to set the diaphragm lip in the carburetor body.
cavity.
NOTE:
Be careful not to pinch the diaphragm, and to keep
the spring straight when installing the chamber
cover by compressing the spring.
Install the spring and chamber cover while the piston
remains in place. Secure the cover with screws
before releasing the vacuum piston.
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