Yamaha F100B F100C Outboards Factory Service Manual, Page 171Get this manual
Drive shaft and lower case (F100B) 5Install the propeller and propeller nut, and then tighten the nut finger tightPlace block of wood between the anticavitation plate and propeller to keep the propeller from turning, and then tighten the nut to the specified torqueLT LT
572 S60C6285
Mounting bolt: 39 Nm (3.9 kgfm, 28 ftlb)