Yamaha YFZ450RA YFZ 450R 2011 Owner's Manual
![Yamaha YFZ450RA YFZ 450R 2011 manual cover](/images/0ac0e7405ddfcd517e1ba70c/thumbs/thumb175x175.webp)
Yamaha recommends using Yamalube 4-Stroke Performance All Purpose Oil 10W-40 for the YFZ450R 2011. Always ensure the oil meets or exceeds the JASO MA standard.
It is recommended to change the oil every 20 hours of operation or every 3 months, whichever comes first. Regular maintenance can ensure optimal performance and longevity of the engine.
The recommended tire pressure for the front tires is 4 psi and for the rear tires is 4 psi. Always check the tire pressure when the tires are cold for accurate readings.
If the ATV has starting issues, check the battery charge, ensure the kill switch is in the "on" position, inspect the spark plug for wear, and verify that fuel is reaching the engine.
The recommended spark plug for the Yamaha YFZ450R 2011 is the NGK CR8E. Ensure it is properly gapped to 0.7-0.8 mm for optimal performance.
Performance can be enhanced by upgrading the exhaust system, using a high-flow air filter, and ensuring regular maintenance such as oil changes and valve adjustments.
If overheating occurs, check the coolant level, ensure the radiator is clean and not blocked, and verify the fan operation. Inspect hoses for leaks or damage.
To adjust the chain tension, loosen the axle nut, turn the adjuster bolts evenly on both sides until the desired tension is achieved, and then retighten the axle nut. Ensure the chain has 1-1.2 inches of slack.
Regular maintenance includes checking and replacing the oil and filter, inspecting and cleaning the air filter, checking brake pads, and ensuring proper chain tension and lubrication.
For winter storage, clean the ATV thoroughly, stabilize the fuel, change the oil, disconnect the battery, and store it in a dry, cool place. Elevate the ATV to prevent flat spots on tires.