Yamaha Outboard Motors Factory Service Manual F6 and F8, Page 338Get this manual
PROPELLER SHAFT HOUSING AND PROPELLER SHAFT CHECKING THE PROPELLER SHAFT HOUSING
1Clean: Propeller shaft housing (with soft brush and solvent) 2Check: Propeller shaft housing Cracksdamage Replace
ASSEMBLING THE PROPELLER SHAFT HOUSING ASSEMBLY
1Install: Solid bushing