2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 13Get this manual
GENERAL INFORMATION
COOLING SYSTEM SPECIFICATIONS
ITEM Coolant capacity Radiator cap relief pressure Thermostat Radiator and engine Reserve tank Begin to open Fully open Valve lift SPECIFICATIONS 1.5 liters (1.6 US qt, 1.3 Imp qt) 0.34 liter (0.36 US qt, 0.30 Imp qt) 108-137 kPa (1.1-1.4 kgfcm ,16"20 psi) 80-84C(176-183F) 95C (203F) mm (0.3 in) minimum Pro Honda HP Coolant or an equivalent high quality ethylene glycol antifreeze containing silicate-free corrosion inhibitors 1:1 mixture with distilled water
Recommended antifreeze Standard coolant concentration
CYLINDER HEADVALVECAMSHAFT SPECIFICATIONS ('04'05)