2001-2005 Yamaha WaveRunner GP800R Factory Service Manual, Page 147Get this manual
JET PUMP
BEARING HOUSING
E Bearing, driven coupling shaft, and grease hose inspection 1Inspect:Bearing Rotate the inner race by handDa agerough ove entReplace! Interm ediate drive shaft Da agepittingReplace! Grease hose Cracksw earReplaceDriven coupling inspection 1Inspect:Driven couplingDriven coupling da per Da agew earReplace