Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 177Get this manual
12Remove bolts securing lower mount retainers to drive shaft housingRemove retainers Reassembly and Installation
1 Apply thin coat of 2-4-C Marine Lubricant onto inside portion of exhaust tube seal and water tube grommetInstall exhaust tube seal into drive shaft housing with tapered side of seal facing upPosition drive shaft housing to plate gasket on top of housing4Position leather bumper on steering arm
aBollsower Moont Retainer (One Each Side)
13Remove lower mount nuts and rubber caps
aExhaust Tube SealDrive Shaft Housing Water Tube Grommetleather Bumper