Yamaha SuperJet Waverunner 2010 Owner's Manual

The recommended fuel type for the 2010 Yamaha SuperJet Waverunner is regular unleaded gasoline with a minimum octane rating of 87.
It is recommended to check and replace the spark plugs every 50 hours of operation or at the start of each season for optimal performance.
To winterize your Yamaha SuperJet, ensure the fuel system is stabilized, flush the cooling system with fresh water, lubricate moving parts, remove and store the battery, and cover the Waverunner to protect it from the elements.
Common reasons for a Yamaha SuperJet not starting include a dead battery, faulty spark plugs, stale fuel, or a clogged fuel filter. Check these components for proper troubleshooting.
The 2010 Yamaha SuperJet is a two-stroke engine and does not have engine oil like a four-stroke. Instead, it uses a premix of oil and fuel. Ensure the oil reservoir is filled and mixed properly with the fuel.
To flush the cooling system, connect a garden hose to the flush port located on the rear of the Waverunner, turn on the water, and then start the engine. Let it run for a few minutes to circulate the fresh water, then stop the engine before turning off the water.
Inspect the hull of your Yamaha SuperJet before and after each use for any signs of damage, cracks, or wear. Regular maintenance helps ensure safety and longevity.
The 2010 Yamaha SuperJet typically uses a 12-volt marine battery. It's important to choose a battery that fits securely in the designated space and meets the power requirements of the Waverunner.
Performance can be improved by ensuring regular maintenance, using high-quality fuel and oil, checking for proper spark plug operation, and ensuring the hull is clean and free from damage. Performance upgrades such as intake grates, impellers, and ride plates can also be considered.
If the throttle feels sticky, check for debris or corrosion on the throttle cable and handle. Lubricate the cable and handle with a marine-grade lubricant and ensure the cable is routed correctly without kinks or sharp bends.