Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 134Get this manual
Anode Assembly 1If removed, install anodeb c
Camshaft and Driven Gear Assembly
1Install camshaft and driven gearHold gear with tool 91-83163M when torquing bolt
Screw Anode O-ring Anode Plug
Anode Bolt Torque 13 lbft(18 Nm)