Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 161Get this manual
Drive Gear 1Install drive gear componentsb TOP c
3Tighten drive gear nut to the specified torque4After tightening the nut, bend the lock washer against the nuta
aDrive Gear NutBend Lock Washer Against Nut
Drive Gear Nut Torque 17 lbft(23 Nm)
Cylinder Head Gasket
1Install cylinder head gasket, dowel pins, and Oring seal28261