Yamaha YXR660FAS Rhino 660 2004 Owner's Manual
![Yamaha YXR660FAS Rhino 660 2004 manual cover](/images/149bc9ee05b7d5065a4cb9a2/thumbs/thumb175x175.webp)
The Yamaha YXR660FAS Rhino 660 2004 should have regular maintenance every 20 hours or 200 miles, whichever comes first. This includes checking the oil level, tire pressure, brake system, and air filter. A comprehensive service should be performed every 100 hours or 1000 miles.
If the Yamaha Rhino 660 doesn't start, check the battery connections and charge. Ensure the fuel is fresh and the fuel valve is open. Inspect the spark plug for signs of wear and replace if necessary. Check the starter relay and fuses for continuity.
The recommended oil for the Yamaha Rhino 660 is Yamalube 4 10W-40 or any equivalent 10W-40 four-stroke engine oil that meets or exceeds the specifications set by the manufacturer.
To replace the air filter, first remove the seat and access panel. Unclip the airbox cover and remove the old filter. Clean the airbox of any debris before installing the new filter. Ensure the new filter is properly seated and replace the cover and seat.
Common causes of overheating include low coolant levels, clogged radiator, faulty thermostat, or a malfunctioning fan. Ensure the radiator is clean and the coolant is topped off. If the issue persists, inspect the thermostat and fan for proper operation.
To improve suspension performance, consider upgrading to aftermarket shocks that allow for adjustable damping and preload. Regularly inspect and maintain the suspension components, ensuring they are properly lubricated and free from damage.
Sluggish acceleration can be caused by a dirty air filter, worn spark plug, or clogged fuel injector. Ensure the air filter is clean, replace the spark plug if necessary, and use a fuel injector cleaner to remove any deposits.
To check the brake fluid level, locate the brake fluid reservoir near the handlebars. Clean the reservoir cap area, remove the cap, and check the fluid level. It should be between the minimum and maximum marks. Top up with DOT 4 brake fluid if necessary.
Signs of a worn drive belt include slipping during acceleration, unusual noises, or visible wear and tear on the belt. Regularly inspect the belt for cracks, fraying, or glazing and replace it if any of these signs are present.
To prevent rust, regularly wash the Rhino 660 to remove dirt and mud that can hold moisture. Dry the vehicle thoroughly and apply a rust-inhibiting spray to the frame and metal components. Store the vehicle in a dry, covered area when not in use.