1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 31Get this manual
LUBRICATION Install the filler cap TORQUE: 12 Nm (1.2 kg-m, ft-Ib) Front differential only: Remove the oil guide
FRONT GEAR CASE OIL (TRX300FW)
LEVEL CHECK
Place the vehicle on level groundo Remove the il check bolt and check that the oil flows out of the check bolt hole If there is no oil flow, remove the filler cap and add oil slowly through the oil filler hole until the oil starts to flow out of the check holeStop adding oil and install the oil check bolt and the filler cap
OIL CHANGE
Remove the skid plate ('86-'92:)Remove the oil filler cap and the drain boltDrain the oil completelyCheck that the drain bolt sealing washer is in good condition and install the drain boltTORQUE: 22 Nm (2.2 kg-m, 16 ft-Ib) Remove the check bolt and fill the gear case with the recommended oilOIL CAPACITY: 200 cc (6.8 oz) at disassembly 190 cc (6.4 oz) after draining RECOMMENDED OIL: Honda GN4 4-stroke oil or equivalent API Service Classification: SF or SG Viscosity: SAE 10 W-40 NOTE Use this specified capacity only as guide: Always add oil until it flows out of the oil check bolt hole, allow it to stop flowing out, then reinstall the oil check bolt