Yamaha FX HO, FX Cruiser HO Waverunner 2019 Owner's Manual

The recommended engine oil type for the Yamaha FX HO Waverunner 2019 is Yamalube 4W 10W-40. The oil capacity is approximately 5.3 quarts (5 liters).
It is recommended to service the Yamaha FX Cruiser HO Waverunner 2019 every 50 hours of operation or once per year, whichever comes first. Regular maintenance includes checking the oil, spark plugs, and coolant levels.
To winterize your Yamaha FX HO Waverunner 2019, drain all water from the engine, add fuel stabilizer to the gas tank, apply fogging oil to the engine, remove the battery and store it in a warm place, and cover the Waverunner to protect it from dust and moisture.
If your Yamaha FX Cruiser HO Waverunner 2019 won't start, check the battery connections, ensure the kill switch is in place, verify that there is fuel in the tank, and inspect the spark plugs for wear or damage.
To flush the engine, attach a garden hose to the flushing port, start the engine, and then turn on the water. Allow the engine to run for about 10 minutes to ensure all saltwater is flushed out. Turn the water off before stopping the engine to avoid water entering the engine cylinders.
To check the coolant level, locate the coolant reservoir and ensure the level is between the minimum and maximum marks. If necessary, top up with a 50/50 mixture of antifreeze and distilled water. Check for any leaks in the cooling system regularly.
If an overheating warning appears, stop the engine immediately and let it cool down. Check for any blockages in the intake grate or cooling passages. Inspect the coolant level and refill if necessary. If the problem persists, consult a professional technician.
To improve fuel efficiency, maintain a consistent speed, avoid rapid acceleration, ensure the hull is clean and free of marine growth, and perform regular maintenance such as changing the oil and air filter.
Common causes of engine vibration include damaged impeller, loose engine mounts, or debris in the intake. Inspect the impeller for damage, check and tighten engine mounts, and clear any debris from the intake. If the issue persists, seek professional assistance.
To reset the maintenance reminder, turn on the ignition, press the “Mode” button until the “Settings” menu appears, select “Maintenance Reset” and confirm the reset. Refer to the owner's manual for detailed instructions.