Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 165Get this manual
Powerhead Installation on Driveshaft Housing 1Install Lifting Eye (91-90455) into flywheel
6Install 10 flat washers and 10 locknuts which secure powerhead to exhaust extension plaledriveshaft housingTorque locknuts in progressive steps until secured78Disconnect hoist from Lifting Eye and remove Lifting Eye from flywheelReinstall plastic cap into center of fl ywheel cover
BE SURE that Lifting Eye is threaded into flywheel as far as possible BEFORE lifting powerhead
2Using hoist, lift powerhead high enough to allow removal of powerhead from repair stand Remove powerhead from repair stand, being careful not to damage drive shaft housing gasket surface of powerhead3Place new gasket around powerhead studs and into position on base of powerhead