Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 352Get this manual
12)Apply ATF to the sealing washer, and set it in the valve body at right anglesBe careful not to set it at an inclined angle, which can lead to the sealing washer collapsing13)Apply ATF to two new O-rings, and install the O-rings on the manual valve14)Tighten the manual valve to the specified torque, and set the internal circlip in the groove in the valve body securelyTORQUE: 1.7 N-m (0.17 kgfem, 1.2 lbf-ft)
[SEAL WASHER
[4] INTERNAL CIRCLIP
15)Apply ATF to new O-ring, and install it on the down relief valve seat16)Apply ATF to the down relief valve seat and install it in the valve body 17) Install the steel ball, spring guide and the valve spring in the down relief valve seat18)Apply ATF to the two new O-rings and install the O-rings in the valve body in the positions shown