Yamaha YFM30GD Grizzly 300 2013 Owner's Manual

To change the oil, warm up the engine, place an oil pan under the drain plug, remove the plug and allow oil to drain completely. Replace the drain plug, remove the oil filter, and install a new one. Fill with the recommended oil type and quantity, then check for leaks.
The recommended tire pressure for the Grizzly 300 is typically around 4 psi for the front tires and 4 psi for the rear tires. Always check the owner's manual for specific guidance.
If the ATV won't start, check the battery connections and charge the battery if necessary. Inspect the spark plug for fouling or damage, and ensure the fuel is fresh. Confirm the kill switch is in the "run" position.
The recommended spark plug for the Grizzly 300 is NGK DR8EA. Always verify with the owner's manual to ensure compatibility.
To adjust the chain tension, loosen the rear axle nut, adjust the chain adjusters on both sides equally until the desired tension is reached, and then retighten the axle nut. The chain should have approximately 20-30mm of slack.
Regular maintenance includes checking and changing the oil, inspecting and cleaning the air filter, checking tire pressure, lubricating moving parts, and inspecting brakes and lights. Follow the maintenance schedule in the owner's manual.
Remove the air filter cover, take out the filter, and wash it with a mild detergent and water. Allow it to dry completely, then lightly oil the filter before reinstalling it. Ensure it is seated properly to prevent dirt ingress.
Check the coolant level and top it off if necessary. Inspect the radiator for obstructions and clean any debris. Ensure the cooling fan is operational. If the problem persists, consult a professional technician.
Remove the wheel, then unbolt the brake caliper and slide it off the rotor. Remove the old brake pads and replace them with new ones. Reattach the caliper and wheel, ensuring all bolts are tightened to specifications.
Check the air filter for blockage, inspect the fuel filter and lines for clogs, and ensure the spark plug is functioning correctly. Also, look at the drive belt for wear or damage.