2001-2005 Yamaha WaveRunner GP800R Factory Service Manual, Page 309Get this manual
E 2Turn the fuel cock knob to the "ON" position
NOTE: Before starting the watercraft, after it has been sitting, remove the fuel tank filler cap to release any built-up pressure in the tank due to fuel expansion3Attach the clip to the engine shut-off switch Also, attach the engine shutoff cord to your left wrist