Yamaha YFM25RZ Raptor 2010 Owner's Manual
![Yamaha YFM25RZ Raptor 2010 manual cover](/images/88d936da169fbaa4ad61d4cb/thumbs/thumb175x175.webp)
It is recommended to use Yamalube 4, 10W-40 or a similar high-quality, 4-stroke engine oil.
To adjust the chain, loosen the rear axle nut, then turn the chain adjuster bolts on each side equally until the desired tension is achieved. Ensure the chain has about 1-1.5 inches of slack.
The recommended tire pressure is 4 psi for the front tires and 4 psi for the rear tires.
Check the battery charge, ensure fuel is reaching the engine, examine the spark plug for wear or fouling, and inspect the starter relay and connections.
The air filter should be checked and cleaned every 20 hours of operation or more frequently in dusty conditions. Replace it if it shows signs of damage or excessive dirt.
The correct spark plug type is NGK CR7E. Ensure it is gapped to the manufacturer’s specification of 0.028-0.031 inches (0.7-0.8 mm).
Remove the radiator cap when the engine is cool, and check that the coolant level is up to the filler neck. Also, ensure the coolant reservoir is filled to the appropriate level.
Common signs include slipping under load, difficulty in shifting gears, and unusual noises when the clutch is engaged.
Regular maintenance such as timely oil changes, air filter cleaning, correct tire pressure, and chain adjustments can improve performance. Additionally, consider performance upgrades like exhaust systems or fuel controllers.
Clean the ATV thoroughly, change the oil, add a fuel stabilizer to the fuel tank, disconnect the battery, and store it in a dry place. Cover it to protect from dust and moisture.