2001-2005 Yamaha WaveRunner GP800R Factory Service Manual, Page 328Get this manual
E EJU00516a
Storage
WARNING
Always place the fuel cock knob in the "OFF" position when storing the watercraft, otherwise fuel could leak out into the engine or engine compartment, which would create fire hazardStorage for prolonged periods of time, such as winter storage, requires preventative maintenance to ensure against deteriorationIt is advisable to have the watercraft serviced by Yamaha dealer prior to storageHowever, the following procedures can be performed by the ownerEJU00913a