Yamaha YFZ05YYXJ 2018 Owner's Manual
![Yamaha YFZ05YYXJ 2018 manual cover](/images/65ce7fc85b8e74c7ef21f97d/thumbs/thumb175x175.webp)
To break in the engine of your 2018 Yamaha YFZ05YYXJ, start by riding at varying speeds, avoiding full throttle, for the first 600 miles. Change the oil after the initial 20 hours of operation to remove any metal particles from the break-in process.
The recommended oil type for the 2018 Yamaha YFZ05YYXJ is Yamalube 4, 10W-40, or an equivalent high-quality motorcycle oil. The oil capacity is approximately 2.1 liters (2.2 US qt) with an oil filter change.
Regular maintenance should be performed every 20 hours of operation or every month, whichever comes first. This includes checking the oil level, air filter, brakes, and tire pressure.
If your Yamaha YFZ05YYXJ won't start, check the battery for charge, inspect the spark plug for fouling, ensure the fuel is fresh, and verify that the fuel shut-off valve is open. If the problem persists, consult the service manual or a professional technician.
To clean the air filter, remove it from the airbox, wash it with a mild detergent and water, allow it to dry completely, and then apply a light coat of air filter oil. Reinstall the filter securely to ensure proper sealing.
Signs that the brakes need servicing include squeaking noises, reduced braking power, a spongy brake lever, and visible wear on brake pads. Regularly inspect the brake pads and fluid levels.
Performance can be improved by upgrading the exhaust system, optimizing the fuel/air mixture with a tuner, maintaining proper tire pressure, and ensuring regular maintenance. Consider professional tuning for best results.
The recommended tire pressure for the 2018 Yamaha YFZ05YYXJ is 4 psi (27.6 kPa) for the front tires and 4 psi (27.6 kPa) for the rear tires. Adjust according to terrain and load for optimal performance.
To adjust the chain tension, place the ATV on a level surface, loosen the axle nut, and turn the chain adjusters on either side of the swingarm equally until the desired tension is achieved. Tighten the axle nut securely after adjustment.
If the engine overheats, stop the ATV immediately and allow it to cool. Check the coolant level, radiator fins for debris, and ensure the cooling fan is operational. Do not continue riding until the issue is resolved.