Make ModelYamaha WR250R
Year2010
Full Model Name2010 Yamaha WR 250 R
EngineLiquid cooled, 4-stroke, 1 cylinder, DOHC, 4 valves
Displacement249.6cc
Bore x Stroke77mm x 53.6mm
Compression Ratio11.8:1
InductionType: EFI; Bore size: Ø 38mm
StartingElectric Start
Max Power22.89KW (30.7hp) @ 10,000RPM
Transmission / Drive6 Speeds / Chain
Front SuspensionØ 46mm forks, 270mm (10.63″) wheel travel
Rear Suspension270mm (10.63″) wheel travel
Front BrakesType: Disc 1 disc, Ø 250mm, 2 piston calipers
Rear BrakesType: Disc 1 disc, Ø 230mm, 1 piston caliper
Front Wheel80/100-21 BRIDGESTONE/TW-301 F
Rear Wheel120/80-18 BRIDGESTONE/TW-302 F
Seat Height930mm (36.6″)
Dry Weight125kg (275.58lb)
Fuel Capacity7.6L (2.01gal.)
Top Speed136.79km/h (85mph)
Idle Speed RPM1,550+/-100
Bike2010 Yamaha WR250R
Standard Maintenance Interval4,828.03km (3,000mi)
Break-in Interval965.61km (600mi)
Engine Oil Change Interval4,828.03km (3,000mi)
Initial Valve Check42,808.55km (26,600mi)
Periodic Valve Check42,808.55km (26,600mi)
Engine Oil Capacity With Filter Change1.4L (0.37gal.)
More on Engine OilYAMALUBE SAE 10W-40
Idle Speed RPM1,550 +/- 100
Coolant Capacity1.15L (0.304gal.) or 0.9L (0.238gal.) at draining
SparksNGK/CR9EK
Spark Plug Gap0.6 – 0.7mm
Cylinder Compression17.4psi (1.2bar, 120kPa) +/- 2.18psi (0.15bar, 15kPa)
Final DriveType: Chain 520 DAIDO 520V Final Drive Ratio: 13 / 43
Fork OilLevel: 105mm (4.13″) Capacity: 613cc +/- 3cc
Front Wheel80/100-21 BRIDGESTONE/TW-301 F
Front Wheel Pressure (solo/dual riding)18psi (1.24bar, 124.11kPa) / 22psi (1.52bar, 151.68kPa)
Rear Wheel120/80-18 BRIDGESTONE/TW-302 F
Rear Wheel Pressure (solo/dual riding)25psi (1.72bar, 172.37kPa) / 29psi (2bar, 199.95kPa)
Headlight12V 60/55W Halogen 60W /55W
TaillightLED
Valve ClearanceIN: 0.165mm +/- 0.035mm EX: 0.265mm +/- 0.035mm
Throttle Grip Free Play3 (0.12) – 5mm (0.2″)
Clutch Lever Free Play10 (0.39) – 15mm (0.59″)
Drive Chain Slack38 (1.5) – 48mm (1.89″)
Engine Oil Drain Bolt Torque20N·m (14.75ft·lbf)
Engine Oil Filter Torque10N·m (7.38ft·lbf)
Front Axle Pinch Bolt Torque23N·m (16.96ft·lbf)
Front Axle Bolt Torque63N·m (46.47ft·lbf)
Rear Axle Bolt Torque125N·m (92.2ft·lbf)
Drive Sprocket Bolt/Nut Torque95N·m (70.07ft·lbf)
Driven Sprocket Bolt/Nut Torque33N·m (24.34ft·lbf)