2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 343Get this manual
BF80-BF9.90
cINSPECTION
DOWN RELIEF VALVE SEAT Check the down relief valve seat, spring guide and spring for wear or damageReplace the down relief valve seat, spring guide or spring if damaged or worn
w-SPRING GUIDE
RELIEF VALVE SEAT
CYLINDER, PISTON, FREE PISTON Check the piston rod for damage and being bentReplace the piston rod with new one if necessaryCheck the inner and outer surfaces of the cylinder for damage and scratchesReplace the cylinder with new one if it is damaged or scratched