Yamaha VXS, VXR Waverunner 2016 Owner's Manual

Routine maintenance for your Yamaha Waverunner includes checking and changing the oil, inspecting the spark plugs, cleaning the air filter, and examining the jet pump. It's also important to flush the engine after each use in saltwater and check the hull for any damages.
If your Waverunner won't start, first check the battery connections and ensure the battery is charged. Inspect the fuel level and quality, and check for any blown fuses. If these steps don't resolve the issue, consult a professional technician.
Overheating can be caused by blocked cooling lines. Inspect and clear any debris from the intake grate and cooling water lines. Ensure the impeller is not damaged and the cooling system is functioning properly.
To winterize, first clean the exterior and flush the engine with fresh water. Stabilize the fuel, change the oil, and lubricate moving parts. Remove the battery and store it in a cool, dry place. Cover the Waverunner to protect it from the elements.
To check the oil level, warm up the engine, then turn it off and wait a few minutes. Remove the dipstick, wipe it clean, reinsert it fully, and then remove it again to check the oil level. Ensure it's within the recommended range.
Use Yamalube 4W 10W-40 oil or a high-quality, equivalent 4-stroke marine engine oil that meets or exceeds API SJ standards.
Service intervals may vary based on usage, but generally, you should service your Waverunner at least once a year or every 50 hours of operation, whichever comes first. This includes changing the oil, inspecting the hull, and checking all mechanical components.
Attach a garden hose to the flush port and run fresh water through the engine for about 10 minutes. Ensure the engine is running during the flush to prevent water from entering the exhaust system.
Regular maintenance is key to performance. Additionally, consider upgrading the impeller for better thrust and acceleration, and ensure the hull is free of any growth or damage that might impede performance.
If your Waverunner is taking on water, immediately check the hull for cracks or damages. Ensure the drain plugs are securely fastened. If the issue persists, inspect seals and gaskets for leaks, and consult a professional if needed.