Yamaha GP800R Waverunner 2005 Owner's Manual
![Yamaha GP800R Waverunner 2005 manual cover](/images/8ec238bd95537e90162db4b5/thumbs/thumb175x175.webp)
The Yamaha GP800R Waverunner 2005 requires unleaded gasoline with a minimum octane rating of 87.
It is recommended to change the engine oil every 50 hours of use or at least once per season.
To winterize your Yamaha GP800R, thoroughly clean and dry the unit, stabilize the fuel, lubricate moving parts, and store it in a dry, cool place. Consider fogging the engine to prevent corrosion.
Check the battery charge, inspect spark plugs, ensure the kill switch is in the correct position, and verify there is sufficient fuel.
Attach a hose to the flush port, run the engine at idle, and flush for about 10 minutes to remove salt and debris.
Inspect the impeller and wear ring regularly for damage or debris. Ensure the pump is free of obstructions and lubricate bearings as needed.
Stop the engine immediately, check for blocked cooling inlets, and ensure proper water flow through the cooling system. Allow the engine to cool before restarting.
Store the Waverunner in a dry, covered area, stabilize the fuel, disconnect the battery, and cover with a breathable cover.
Look for cracks, scratches, or gouges in the hull. Inspect the intake grate and ride plate for damage or deformations.
Regular maintenance, using high-quality fuel, and ensuring the jet pump is clean and in good condition can help maintain optimal performance. Consider upgrading the impeller for performance improvements.