Yamaha SuperJet Waverunner 2021 Owner's Manual
![Yamaha SuperJet Waverunner 2021 manual cover](/images/69fcbf1c4093c8d2b58a5ebe/thumbs/thumb175x175.webp)
The recommended oil for the Yamaha SuperJet Waverunner 2021 is Yamalube 2-W Stroke Engine Oil. It ensures optimal performance and protection for the engine.
To winterize your Yamaha SuperJet, drain any water from the engine, add a fuel stabilizer, and store the Waverunner in a dry, covered area. It's also important to disconnect the battery to prevent drainage.
To flush the engine, attach a garden hose to the flushing port, start the engine, and turn on the water. Let it run for several minutes to remove any salt or debris, then turn off the water before stopping the engine.
Regular maintenance should be performed every 50 hours of operation or at least once a year. This includes checking the spark plugs, fuel system, and lubricating moving parts.
If your Waverunner won't start, check the battery connections, fuel level, and ensure the safety lanyard is properly attached. If the problem persists, consult a professional technician.
Use a mild detergent and a soft brush or sponge to clean the hull. Rinse thoroughly with fresh water to remove any soap residues and avoid using harsh chemicals that could damage the surface.
During the first 10 hours, avoid full throttle operation and vary the engine speed. Gradually increase speed and avoid continuous operation at any single speed range for extended periods.
The Yamaha SuperJet Waverunner 2021 features manual trim adjustment. Adjust the trim to a level that suits your riding conditions, usually by manually setting the nozzle angle to control the ride and handling characteristics.
Check the fuel and oil levels, ensure the battery is charged, inspect the hull for damage, and confirm the safety equipment is onboard. Verify that the engine starts smoothly and runs properly before heading out.
To improve fuel efficiency, maintain a steady speed, avoid rapid accelerations, and ensure the engine is well-maintained. Keeping the hull clean and free of marine growth can also help reduce drag.