2001-2005 Yamaha WaveRunner GP800R Factory Service Manual, Page 339Get this manual
E EJU00544
Inspecting the oil injection system
Check the oil injection system for leakage, cracks, or malfunctionsIf necessary, have Yamaha dealer repair the oil injection systemCheck: Oil tank for damage, cracks or leakageG Oil tank for water or dirtG Oil hose and joint for damage or cracksG Oil filter for dirtG Oil pump for leakage