1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 8Get this manual
GENERAL INFORMATION I: TRX300FW
ENGINE Type Cylinder arrangement Bore stroke Displacement Compression ratio Valve train Oil capacity Lubrication system Cylinder cOmpression Opens Intake valve Closes Exhaust valve Opens Closes Valve clearance (Cold) CARBURETOR Type Identification number Intake Exhaust '88-'90: '91'92: '93: After '93: '88-'90: After '90: '88-'90: After '90: '88-'90: '91'92: After '92: Gasoline, air-cooled 4-stroke Single cylinder inclined 20 from vertical 74.0 65.5 mm (2.91 2.58 in) 281.7 cc (17.2 cu-in) 9.0: Overhead camshaft, chain driven 2.5 lit (2.6 US qt, 2.2 Imp qt) at disassembly 2.2 lit (2.3 US qt, 1.9 Imp qt) after draining Forced pressure and wet sump 1,250-1,450 kPa (12.5-14.5 kgcm178-206 psi) BTDC 11 BTDC 35 ABDC 32 ABDC at mm lift 40 BBDC 43 BBDC ATDC ATDC 0.15 mm (0 .006 in) 0.15 mm (0.006 in) Vacuum piston (V E) VE90A VE90C VE90D VE90E VE91A 32 mm (1.3 in) #120 #125 #42 #40 #85 #80 #90 #85 see page 4-14 3rd groove from the top 18.5 mm (0.73 in) ,500 100 rpm ,400 100 rpm