Yamaha SuperJet Waverunner 2022 Owner's Manual

The recommended maintenance schedule includes regular checks such as inspecting the hull and impeller before each ride, changing the engine oil every 50 hours or annually, checking the coolant and fuel system for leaks, and performing a full inspection every 100 hours or annually.

To winterize your Yamaha SuperJet, flush the cooling system with fresh water, add fuel stabilizer to a full tank, fog the engine, remove the battery and store it in a cool, dry place, and cover your Waverunner with a breathable cover to protect it from dust and moisture.

If your Waverunner won't start, check the battery connections and charge if necessary, ensure the safety lanyard is properly attached, inspect the fuel level and system, and verify that the spark plugs are clean and functional. If the issue persists, consult a professional technician.

To enhance performance, consider upgrading to a high-performance impeller, installing aftermarket sponsons for better cornering, using premium fuel, and ensuring regular maintenance to keep the engine running efficiently.

If the engine is overheating, check for obstructions in the cooling water intake or lines, inspect the impeller and pump for damage, ensure the thermostat is functioning correctly, and verify the coolant levels. Clean any blockages and replace faulty parts as needed.

To prevent corrosion, rinse the Waverunner thoroughly with fresh water after each use in saltwater, apply anti-corrosion spray to metal parts, and use a marine-grade wax on the hull. Regularly check and maintain the sacrificial anodes.

The Yamaha SuperJet Waverunner 2022 requires Yamalube 4W 10W-40 four-stroke engine oil for optimal performance and protection. Always use oil that meets or exceeds the manufacturer's specifications.

To check the oil level, ensure the Waverunner is on a level surface, remove the dipstick, wipe it clean, reinsert it without screwing it in, then remove again to check the level. Add oil if necessary, ensuring not to overfill.

To clean the hull, rinse with fresh water to remove loose debris, apply a marine-safe detergent, and scrub gently with a soft brush. Rinse thoroughly and dry with a microfiber cloth. Apply a protective wax for added shine and protection.

To replace the spark plugs, remove the engine cover, disconnect the spark plug wires, use a spark plug socket to remove the old plugs, check the gap on the new plugs, and install them. Reattach the wires and engine cover.