Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 290Get this manual
5Position exhaust tube and gasket on adaptor plateSecure both to plate with boltsTorque bolts to 21 lbft(28.5 Nm)6Secure tube to adaptor plate with boltsTorque bolts to 80 lbin(9.0 Nm) 7Position adaptor plate on top of housing8Secure adaptor plate to drive shaft with boltsTorque bolts to 25 lbft(34.0 Nm)
aBolts [Torque to 25 lbft(34.0 Nm)]
9Apply thin coat of Perfect Seal onto metal portion of upper dyna-float mounts10Position mounts on drive shaft housing plate11Install rubber washer onto each upper mount, followed by metal washer12Push bolts thru mountsaExhaust TubeGasketWater Tube