2001-2005 Yamaha WaveRunner GP800R Factory Service Manual, Page 356Get this manual
E TROUBLE Watercraft slow or loses power POSSIBLE CAUSE Cavitation Jet intake clogged Impeller damaged or worn Engine over- Jet intake clogged heated Fuel filter Clogged Spark plug Fouled or defective Incorrect heat range Gap incorrect Loose Loose connection Stale or contaminated Water in bilge REMEDY Clean Have serviced by Yamaha dealer Clean Have serviced by Yamaha dealer Replace Replace Adjust Connect properly Tighten or connect properly Have serviced by Yamaha dealer Drain PAGE 5-4 5-4 4-11 4-15 4-15 4-15 4-15 4-11 3-7