2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 56Get this manual
MAINTENANCE The engme cakes about 1.85111ers at oil and filrer changeBecause on IV pomon of lhat oil ;s held in the od tankyou cannot add the full amount mmally
Pour the recommended engine oi (page 4-10) into the oil tank up to the upper leve mark on the dipstick
ENGINE OIL CAPACITY:
1.8 liters (1.9 US qt, 1.6 Imp qt) at draining 1.85 liters (1 .95 US qt, 1.63 Imp qt) at drainingfilter change 2.2 liters (2.3 US qt, 1.9 Imp qt) at disassembly Install the filler capdipstickPlace the vehicle on firm level groundStart the engine and let it idle for few minutes without snapping the throttleStop the engine and add the recommended oil up to the upper level mark on the dipstickIn stall the filler capdipstickCheck the oil level (page 4-1 OJAfter replacing, make sure there are no oi leaksInstall the engi ne guard and tighten the two boltsLOWER UPPER