Yamaha YFZ450RE, YFZ450RSE, YFZ450RSSE YFZ 450R 2014 Owner's Manual
![Yamaha YFZ450RE, YFZ450RSE, YFZ450RSSE YFZ 450R 2014 manual cover](/images/4bdf70ef229fa8d99da2cc71/thumbs/thumb175x175.webp)
The recommended oil type for Yamaha YFZ450R models is Yamalube 10W-40 Performance All Purpose oil or any equivalent 10W-40 oil that meets or exceeds API service SG requirements.
It is advised to change the oil in your YFZ450R every 10 hours of riding or once every race event to maintain optimal performance and engine health.
Start by checking the battery connections and fuses. Make sure the battery is fully charged. Inspect the wiring harness for any signs of wear or damage. Use a multimeter to test the continuity of wires and the functionality of the starter switch.
The correct chain tension for a Yamaha YFZ450R is approximately 1.6 inches (40 mm) of slack measured at the midpoint of the chain between the front and rear sprockets.
To adjust the suspension on a YFZ450R, start by setting the preload to match your weight. Adjust the compression and rebound settings according to your riding style and terrain. Refer to the owner’s manual for specific adjustment instructions and recommended settings.
After each ride, clean the quad thoroughly, inspect the tires for damage and proper pressure, check the chain slack and condition, and ensure all bolts and nuts are tight. Lubricate moving parts such as the chain and pivot points.
Performance can be enhanced by upgrading the exhaust system, re-jetting the carburetor, installing a high-flow air filter, and optimizing the suspension setup. Regular maintenance and using high-quality fuel can also improve performance.
Engine overheating can be caused by low coolant levels, blocked radiators, or a malfunctioning thermostat. Ensure the cooling system is filled properly, clean any debris from the radiator, and check the thermostat for proper operation.
The recommended spark plug for a Yamaha YFZ450R is an NGK CPR9E with a gap of 0.7-0.8 mm (0.028-0.031 in).
To store your YFZ450R, clean the quad thoroughly, change the oil and filter, fill the gas tank and add a fuel stabilizer, disconnect the battery, and keep the quad in a dry, covered location. Use a cover to protect it from dust and debris.