Yamaha YFM70GPAM, YFM70GPHM, YFM70GPSM Grizzly 2021 Owner's Manual
![Yamaha YFM70GPAM, YFM70GPHM, YFM70GPSM Grizzly 2021 manual cover](/images/08b3bbdfc964a5c0f0aad9e0/thumbs/thumb175x175.webp)
Regular maintenance includes checking and replacing the oil and oil filter, inspecting brake pads, checking tire pressure, and cleaning the air filter. It's important to follow the maintenance schedule in the owner's manual for optimal performance.
First, check the battery connections and ensure they are tight. Then, inspect the fuel level and ensure the fuel valve is open. If the ATV still won't start, check the spark plug for wear or fouling.
To improve fuel efficiency, ensure the ATV is well-maintained with regular oil changes and clean air filters. Additionally, avoid excessive idling and aggressive acceleration. Proper tire inflation is also crucial.
Yamaha recommends using Yamalube 10W-40 or 10W-50, which is specifically formulated for their engines. Always refer to the owner's manual for the recommended oil type and viscosity.
Start by checking the battery voltage and connections. Inspect the fuses and replace any that are blown. If the problem persists, consult the wiring diagram in the service manual to trace and diagnose any wiring issues.
Remove the air filter and gently tap it to remove loose dirt. If it's washable, clean it with a mild detergent and water, then allow it to dry completely before reinstalling. Use a light coat of air filter oil if required.
Adjust the preload on the shocks to suit your weight and riding conditions. Turning the preload adjuster clockwise will increase stiffness, while counterclockwise will soften it. Refer to the manual for detailed instructions.
Stop the vehicle and let it cool down. Check the coolant level and top it up if necessary. Ensure the radiator is not obstructed by debris. If overheating persists, consult a Yamaha dealer for further diagnostics.
It's recommended to inspect the spark plug every 3,000 miles and replace it if there's any sign of wear or fouling. Always use the spark plug type specified in the owner's manual.
The recommended tire pressure is typically between 5-7 psi for front and rear tires. Always check the owner's manual for the exact specifications for your model.