Yamaha Marine Outboards Factory Service / Repair/ Workshop Manual 225G 250B L250B, Page 183Get this manual
PROPELLER SHAFT HOUSING ASSEMBLY (COUNTER ROTATION MODELS)
Inspect: Teeth Dogs Damagewear Replace
INSPECTING THE FORWARD GEAR
INSPECTING THE BEARING
Inspect: Bearing Pittingrumbling Replace
INSPECTING THE PROPELLER SHAFT HOUSING
Inspect: Propeller shaft housing Cracksdamage Replace
INSPECTING THE DOG CLUTCH
Inspect: Dog clutch Damagewear Replace