Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 71Get this manual
5) Remove the shift spring and clutch shifter from the propeller shaft [ SHIFT SPRING
11 PROPELLER SHAFT
121 CLUTCH SHIFTER
cINSPECTION
CLUTCH SHIFTER
Check the clutch dogs for wear or damage
PROPELLER SHAFT
Measure the O.Dof the propeller shaft
[ FORWARD BEVEL GEAR