1998 TRX300EX Specifications

General Specs
ManufacturerHonda
Year1998
ModelTRX300EX
Model NameFourtrax 300EX
Model CodeTE19
Product CodeHM3
Frame VIN LocationStamped on front of frame
Engine Serial LocationOn top of right side cover directly under exhaust pipe
Frame Starting NumberJH2TE190*WK300001
JH2TE191*WK100001 - USA (CA)
JH2TE193*WK300001 - USA (NH)
JH3TE192*WK300001 - Canada
Engine Starting NumberTE19E2200001
Owner Manual31HM3650
Service Manual61HM307
Chassis
Length1720 mm (67.7 in)
Width1105 mm (43.5 in)
Height1085 mm (42.7 in)
Seat Height770 mm (30.3 in)
Wheelbase1150 mm (45.3 in)
Ground Clearance125 mm (4.9 in)
Curb Weight177 kg (390.3 lb)
Dry Weight171 kg (377.1 lb)
Caster Angle
Trail32 mm (1.26 in)
Tire & Rim
Front Tire Size (HxW-R)22x7-10
Rear Tire Size (HxW-R)22x10-9
Front Rim Size (W x H)5.5x10
Rear Rim Size (W x H)8x9
Engine
Engine TypeOHC single cylinder 4 stroke air cooled
Cylinder ArrangementSingle cylinder inclined 20 degrees
Valve TrainOverhead camshaft - chain drive
Displacement281.7 cc (17.2 ci)
Bore74 mm (2.9 in)
Stroke65.5 mm (2.6 in)
Compression Ratio8.9:1
Cylinder Compression1275 kPa (185 psi)
Horsepower21.3 PS (21 hp)
Starter TypeElectric
Oil Capacity - Total2 L (2.1 US qt; 1.8 Imp qt)
Oil Capacity - Oil Change1.6 L (1.7 US qt; 1.4 Imp qt)
Engine Dry Weight42.8 kg (94.4 lb)
Drive Train & Transmission
Clutch TypeManual
Transmission Type5 Speed with reverse
Primary Reduction2.833
First Gear3.692
Second Gear2.529
Third Gear1.857
Fourth Gear1.458
Fifth Gear1.178
Reverse5.415
Final Reduction2.923
Gear Shift PatternR/1 - N - 2 - 3 - 4 - 5
DrivelineChain
Drive Chain (Size/Links)520/86
Carburetor
BrandKeihin
Identification MarkQB02A
QB02B (CA)
TypePiston valve
Throttle Bore29 mm (1.1 in)
Main Jet#122
Pilot Jet/Slow Jet#38
Jet Needle Clip Position3rd Groove
Pilot Screw Adjustment2 1/4 turns out
Float Level18.5 mm (0.7 in)
Engine Idle1400 RPM
Air Filter TypeUrethane and screen
Fuel Tank Capacity8.5 L (2.2 US gal; 1.9 Imp gal)
Fuel Tank Reserve1.8 L (0.5 US gal; 0.4 Imp gal)
Ignition
Ignition TypeCDI
CDI Identification MarkCI632 (HM3)
Spark PlugDR8ES-L (NGK)
X24ESR-U (Denso)
Spark Plug Gap Max0.6-0.7 mm (0.024-0.028 in)
Pulse Generator300-500 Ω
Pulse Generator Peak Voltage0.7 V minimum
Lighting Coil0.2-0.6 Ω
Ignition Coil Primary0.1-0.3 Ω
Ignition Coil Secondary w/o Cap7000-9000 Ω
Ignition Coil Secondary w/ Cap2500-3500 Ω
Primary Coil Peak Voltage100 V minimum
Initial Ignition Timing17.0° BTDC
Full Advance Ignition Timing33.0° BTDC
Electrical
Voltage12 V
Power TypeDC
Alternator Max Output240 W
Alternator Max Output RPM5000 RPM
Regulator Voltage14-15.5 V
Brakes
Front Brake TypeDual hydraulic disc
Rear Brake TypeHydraulic disc
Suspension
Front SuspensionDouble wishbone
Rear SuspensionSwingarm
Front Wheel Travel170 mm (6.7 in)
Rear Wheel Travel200 mm (7.9 in)

Information on this page is provided in good faith that it is accurate, but in no way is the data guanteed to be accurate. If there are any mistakes, please contact me.