Yamaha YZ250FXG 2016 Owner's Manual

For optimal performance, use a high-quality 4-stroke motorcycle oil that meets or exceeds JASO MA specifications, with a viscosity of 10W-40.
It is recommended to change the oil every 15 hours of riding time or after a particularly hard ride to maintain engine performance.
The recommended tire pressure is typically around 12 psi for the front tire and 12 psi for the rear tire, but check your owner's manual for specific conditions.
Check the battery charge, inspect the spark plug for fouling, ensure the fuel is fresh, and verify that the kill switch is in the correct position.
Clean the air filter every 10 hours of riding or more frequently in dusty conditions. Ensure it is properly oiled before reinstalling.
Adjust the suspension by turning the compression and rebound damping adjusters on the front forks and rear shock. Refer to the user manual for specific settings based on weight and riding style.
Stop the engine immediately, let it cool, check the coolant level, and inspect for any leaks or blockages in the cooling system.
Remove the seat and tank to access the cylinder head, then use a spark plug socket to remove the old plug and install a new one, ensuring it is properly gapped.
Use a high-quality ethylene glycol-based coolant that is specifically formulated for aluminum engines and radiators.
Regularly clean and lubricate the chain every 300 miles or after riding in wet or muddy conditions. Check tension frequently and adjust as needed.