Yamaha YZ450FE 2014 Owner's Manual

The recommended oil type for the Yamaha YZ450FE 2014 is 10W-40, and the oil capacity is approximately 1.0 liter (1.06 US qt) without filter change.
The air filter should be cleaned every 10 hours of riding or more frequently in dusty conditions. Inspect and replace if damaged.
For the Yamaha YZ450FE 2014, the recommended tire pressure is 12 psi for the front tire and 12 psi for the rear tire.
Check the fuel supply, ensure the battery is charged, inspect the spark plug for wear or fouling, and verify the kill switch is in the "run" position.
Before each ride, check the oil level, tire pressure, brake function, chain tension, and ensure all bolts and nuts are tightened.
Refer to the owner's manual for baseline settings, then adjust the compression and rebound damping on the front and rear suspension to suit riding conditions and personal preference.
Symptoms of a worn-out clutch include difficulty in shifting gears, clutch slipping under acceleration, and a spongy clutch lever feel.
Clean the bike thoroughly, drain or stabilize the fuel, check and lubricate moving parts, charge the battery regularly, and store in a dry, covered place.
Stop the bike immediately, allow the engine to cool down, check the coolant level, inspect the radiator for obstructions, and ensure the fan is operational.
Regularly clean the chain with a suitable cleaner, check for proper tension, lubricate with a high-quality chain lubricant, and inspect for signs of wear or damage.