Yamaha Outboard Motors Factory Service Manual F6 and F8, Page 318Get this manual
LOWER UNIT REMOVING THE PROPELLER
Remove: Propeller
WARNING
Do not hold the propeller with your hands when removing or installing itBe sure to remove the battery leads from the batteries and the lanyard engine stop swithPut block of wood between the cavitation plate and propeller to keep the propeller from turning
CHECKING THE PROPELLER
Check: Blades Splines Cracksdamagewear