Throеtle Valve - Honda TRX400EX FOURTRAX 1999 Service Manual

Install a new O-ring into the float chamber groove
securely.
Install the float chamber, being careful not to pinch
the boot and tighten the four screws.
ACCELERATOR PUMP
Insert the diaphragm shaft into the float chamber
through the boot and set the diaphragm rib into the
groove properly. To avoid damage to the boot, turn
the shaft slowly when inserting.
Place the spring onto diaphragm. Install and hold the
p u m p cover, being careful not t o pinch the
diaphragm and tighten the three screws.
Install the needle clip onto the jet needle.
STANDARD CLIP POSITION: 3rd
Insert the jet needle into the throttle valve.
Assemble the throttle valve and valve arm with the
two screws.
Install the throttle valve assembly into the carburetor
body, being careful not to damage the jet needle.
!
groove from top
i
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FUEL SYSTEM
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I EWS
VALVE ARM
5-9