Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 182Get this manual
cINSTALLATION 11 Check the anode metal, if it is excessively corroded
Replace with new oneInstall the anode metal and tighten the 20 mm screw securely
2) Install new jacket cover O-ring the water jacket
cover securely3) Install the flush valve spring and flush valve with the short side facing the cover side as shown4) Install the water jacket cover and tighten the six 22 mm flange bolts