2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 142Get this manual
COOLING SYSTEM REPLACEMENTAIR BLEEDING When filling the system with coolant, place the vehicle on flat, level surfaceRemove the radiator cap (page 6-4)Remove the drain plug and drain the coolant from the radiatorInstall the drain plug with new seal rubber
DRAIN PLUG Remove the fuel tank cover (page 2-6)Remove the drain bolt and drain the coolant from the engineInstall the drain bolt with new sealing washerInstall the fuel tank cover (page 2-6)SEALING WASHER
Disconnect the siphon hose and drain the coolant from the radiator reserve tankConnect the siphon hose to the reserve tank