1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 30Get this manual
LUBRICA TION Fill the crankcase with the recommended oilOIL CAPACITY: 2.5 lit (2.6 US qt, 2.2 Imp qt) at disassembly 2.25 lit (2.38 US qt, 1.98 Imp qt) at oil and filter change 2.2 lit (2 .3 US qt, 1.9 Imp qt) after draining Install the oil filler capdipstickStart the engine and let it idle for to minutesStop the engine and check that the oil level is at the upper level line on the dipstickMake sure there are no oil leaks
OIL FILTER SCREEN
Remove the right crankcase cover (page 8-3)Remove the oil filter screen and clean itInstall the oil filter screenInstall the right crankcase cover (page 8-23)
FRONT DIFFERENTIAL (TRX300FW)1 REAR FINAL DRIVE OIL
OIL CHANGE
Front differential onlyUse suitable oil guide under the drain bolt to prevent oil spilling on the frameRemove the oil filler cap and the drain bolt to drain all oil from the gear caseCheck that the drain bolt sealing washer is in good conditionTighten the drain bolt to the specified torqueTORQUE: 12 Nm (1.2 kg-m, ft-Ib) Fill with the recommended oil to the standard levelOIL CAPACITY: FRONT DIFFERENTIAL: '88: 100 cc 90 cc After '88: 200 cc 190 cc REAR FINAL DRIVE: 100 cc 90 cc RECOMMENDED OIL: Hypoid