2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 158Get this manual
FUEL SYSTEM (After '05) Install the spring set plate to the throttle stop screw groove while pressing the springInstall the carburetor switch wire grommet to the carburetor bodyGROMMET
Note the installation Assemble the throttle valve plate on the throttle
direction of the valve|nstg|| {he thrott|e va,ve p|ate sea| side
THROTTLE VALVE PLATE
throttle valve plate
facing toward the throttle valve
THROTTLE VALVE
Install the throttle valve assembly into the carburetor with the valve plate facing towards the engine side Make sure the throttle valve moves smoothlyAlign the holes in the throttle shaft arm and throttle drum shaftApply locking agent to the screw threadsInstall and tighten the throttle drum shaft screw to the specified torqueTORQUE: 2.1 N-m (0.2 kgf m, 1.5 Ibf-ft)