Honda Outboards BF40A/BF50A Service Manual, Page 414Get this manual
BF40A-BFSOA 2) Apply ATF to new a-ring, and install it on the valve B3) Apply ATF to the valve and install the valve in the valve body noting the installation direction4) Apply ATF to new a-ring, and install it on the sleeve5) Set the new backup ring on the spool valve and apply ATF to the outer surface of the spool valve6) Install the spool valve in the sleeve noting the installation direction7) Apply ATF to the sleeve, and install the sleeve in the valve body noting the installation direction
1.5 10.7 mm
[5] O-RING 1.5 13.5 mm
[4] BACKUP RING
[1] VALVE [2] SLEEVE