Honda TRX450R Service Manual page 148

FUEL SYSTEM (After '05)
Remove the needle holder and jet needle.
Check the jet needle for wear, nicks or other dam-
age.
Remove the throttle shaft screw.
Lift up the throttle shaft arm and remove the throttle
valve assembly.
JET NEEDLE
THROTTLE VALVE ASSEMBLY
SCREW
Remove the throttle valve plate from the throttle
valve.
Check the throttle valve, throttle valve seal and
throttle valve plate for scratches, wear or damage.
Replace them if necessary.
THROTTLE VALVE PLATE
^ VALVt
THROTTLE VALVE SEAL
8-10