Yamaha WR25RB, WR25RBC WR250R 2012 Owner's Manual
![Yamaha WR25RB, WR25RBC WR250R 2012 manual cover](/images/5e1d6a630e3460f9ababb6d7/thumbs/thumb175x175.webp)
For optimal performance, it is recommended to change the oil every 3,000 miles or every 6 months, whichever comes first. Regular oil changes ensure the engine runs smoothly and efficiently.
Yamaha recommends using a high-quality 10W-40 motorcycle oil that meets the JASO MA standard for the WR250R 2012. This type of oil is formulated to provide excellent protection and performance.
To adjust the chain tension, first place the bike on a stand. Loosen the axle nut and adjust the chain adjusters evenly on both sides until you achieve 1.2 to 1.6 inches of slack at the midpoint of the chain. Tighten the axle nut securely after adjustment.
The recommended tire pressure for the WR250R 2012 is 22 psi for the front tire and 25 psi for the rear tire. These pressures are suitable for standard riding conditions.
If the WR250R 2012 won't start, first check the battery to ensure it's charged. Next, inspect the spark plug for fouling or wear and replace if necessary. Also, verify that the fuel is fresh and the fuel valve is open.
The valve clearance for the WR250R 2012 should be 0.10-0.20 mm for the intake valves and 0.20-0.30 mm for the exhaust valves. Regularly checking and adjusting the valves can help maintain engine performance.
To improve performance, consider upgrading the exhaust system, installing a high-performance air filter, and re-mapping the ECU. Regular maintenance such as ensuring proper tire pressure and chain tension also contributes to better performance.
If the bike overheats, stop riding immediately and let the engine cool. Check the coolant level and look for leaks in the cooling system. Ensure the radiator is clean and unobstructed. If problems persist, consult a professional mechanic.
To reset the maintenance light, turn the ignition key to the "on" position without starting the engine. Press and hold the "reset" button on the instrument panel until the light turns off. This should reset the maintenance reminder.
Yamaha recommends using NGK CR9E or DENSO U27ESR-N spark plugs for the WR250R 2012. These plugs provide optimal ignition performance and durability.