Yamaha F100B F100C Outboards Factory Service Manual, Page 9Get this manual
Safety while working 6Keep supply of clean, lint-free cloths for wiping up spills, etc
Good working practices
Special tools Use the recommended special tools to protect parts from damageUse the right tool in the right mannerdo not improvise
3Install bearings with the manufacture identification mark in the direction indicated in the installation procedureIn addition, be sure to lubricate the bearings liberally4Apply thin coat of water-resistant grease to the lip and periphery of an oil seal before installation5Check that moving parts operate normally after assembly