2004-2005 Honda TRX450R Factory Sevice Manual, Page 92Get this manual

FUEL SYSTEM Remove the two screws an the link arm with the
sp ring fr he thrott le valve
LINK ARM

THROTILE VA LVE

Remove the jet needle from the throttle valveCheck the jet needle for stepped wear or damageCheck the throttle valve for sco ring, scratches or damage

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives