Make ModelHonda NX650 Dominator
Year1989
Full Model Name1989 Honda NX 650 Dominator
EngineAir cooled, 4-stroke, 1 cylinder, SOHC, 4 valves
Displacement644cc
Bore x Stroke100mm x 82mm
Compression Ratio8.3:1
InductionType: Carburator; Bore size: Ø 40mm
StartingElectric Start
Max Power33.56KW (45hp) @ 6,000RPM
Transmission / Drive5 Speeds / Chain
Front SuspensionØ 41mm forks, 220mm (8.66″) wheel travel
Rear Suspension195mm (7.68″) wheel travel
Front BrakesType: Disc 1 disc, Ø 256mm, 2 piston calipers
Rear BrakesType: Disc Ø 220mm, 1 piston caliper
Front Wheel90/90-21 54S
Rear Wheel120/90-17 64S
Seat Height870mm (34.3″)
Dry Weight152kg (335.1lb)
Fuel Capacity13L (3.43gal.)
Top Speed160.8km/h (99.92mph)
Idle Speed RPM1,300+/-100
Bike1989 Honda NX650 Dominator
Standard Maintenance Interval6,437.38km (4,000mi)
Break-in Interval965.61km (600mi)
Engine Oil Capacity With Filter Change1.95L (0.515gal.)
More on Engine OilSAE 10W-40 Honda 4-Stroke Oil API SE or SF
Idle Speed RPM1,300 +/- 100
SparksNGK DPR 8EA-9, racing: NGK DPR 9EA-9
Spark Plug Gap0.8 – 0.9mm
Cylinder Compression178psi (12.27bar, 1,227.27kPa) +/- 1.45psi (0.1bar, 10kPa)
Final DriveType: Chain 525 Final Drive Ratio: 15 / 45
Fork OilLevel: Capacity: 592cc +/- 2.5cc
Front Wheel90/90-21 54S
Front Wheel Pressure (solo/dual riding)22psi (1.52bar, 151.68kPa) / 22psi (1.52bar, 151.68kPa)
Rear Wheel120/90-17 64S
Rear Wheel Pressure (solo/dual riding)22psi (1.52bar, 151.68kPa) / 29psi (2bar, 199.95kPa)
Headlight12V 60/55W Halogen 60W /55W
Taillight12V 32/3 cp Halogen 32W 3W
Valve ClearanceIN: 0.1mm +/- 0.005mm EX: 0.12mm +/- 0.005mm
Throttle Grip Free Play2 (0.08) – 6mm (0.24″)
Clutch Lever Free Play10 (0.39) – 20mm (0.79″)
Drive Chain Slack30 (1.18) – 40mm (1.57″)
Engine Oil Drain Bolt Torque25N·m (18.44ft·lbf)
Engine Oil Filter Torque9N·m (6.64ft·lbf)
Engine Oil Frame Drain Bolt Torque40N·m (29.5ft·lbf)
Front Axle Pinch Bolt Torque12N·m (8.85ft·lbf)
Front Axle Bolt Torque65N·m (47.94ft·lbf)
Front Brake Caliper Mounting Bolt Torque27N·m (19.91ft·lbf)
Rear Axle Bolt Torque95N·m (70.07ft·lbf)
Driven Sprocket Bolt/Nut Torque46N·m (33.93ft·lbf)