Yamaha SuperJet Waverunner 2009 Owner's Manual
![Yamaha SuperJet Waverunner 2009 manual cover](/images/1897a06eefa55640b8b0aa1c/thumbs/thumb175x175.webp)
The 2009 Yamaha SuperJet Waverunner is designed to run on regular unleaded gasoline with a minimum octane rating of 86.
Regular maintenance is recommended every 50 hours of operation or annually, whichever comes first. This includes checking the oil, inspecting the impeller, and flushing the cooling system.
To flush the cooling system, connect a hose to the flushing port, start the engine, and allow water to flow for a few minutes. Ensure the engine is running during the process to prevent water from entering the exhaust.
If your SuperJet is not starting, check the battery connections, ensure the safety lanyard is properly attached, and inspect the spark plugs for wear or fouling.
Performance can be enhanced by upgrading the impeller, installing a high-flow air filter, and using performance-grade spark plugs. Regular maintenance also helps maintain peak performance.
For the 2009 model, Yamaha recommends an oil-to-gas ratio of 50:1 using Yamalube 2W oil or equivalent.
To winterize, drain all water from the engine, add fuel stabilizer to the fuel tank, fog the engine cylinders with fogging oil, and store the Waverunner in a dry, cool place.
Overheating can result from a clogged cooling system, low coolant levels, or a malfunctioning thermostat. Regular inspection and flushing of the cooling system can prevent overheating issues.
To replace the spark plugs, remove the ignition coil, unscrew the old spark plug using a spark plug socket, and install a new plug by tightening it to the manufacturer's specification.
Symptoms of a failing impeller include reduced acceleration, unusual vibrations, and abnormal noises from the jet pump area. Regular inspection can help identify wear or damage early.