2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 349Get this manual
BF80-BF9.90 2) Apply ATF to two new a-rings, and install the a-rings in the valve body Install the smaller a-ring in the lower groove and the larger -ring in the upper groove of the valve bodyO-RING 2.0 43.5 mm
Install in the upper groove
Install in the lower groove
VALVE BODY
3) Apply ATF to new a-ring and backup ring, and install them on the free piston
FREE PISTON
BACKUP RING
O-RING 2.4 27.7 mm
4) Apply ATF to new a-ring and install it on the piston rod5) Apply ATF to the inner wall of the cylinder6) Install the free piston in the cylinder and pour fresh ATF to the free piston7) Install the piston rod in the cylinder from the chamfered ends at the inside of the cylinder and push in the piston rod until the piston rod end aligns with the cylinder end as shown INOTICEI