2004-2005 Honda TRX450R Factory Sevice Manual, Page 99Get this manual
FUEL SYSTEM Turn the th rottle sto screw to align he butt erfl th rottle valve it the ed ge of he outside by- pass ho le in th carbu retorInstall th accele rat or pump (page 6- 17)
ACCELERATOR PUMP
Install the diaphragm shaft into he float chamberthrough the boo while slow ly turn it prevent the boot from damaging Set the diaphragm rib into the groove propertyInstall the sp ring and accelerator pump cover