Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 287Get this manual
6Remove bolts securing exhaust adaptor plate to drive shaft housing 8Remove bolts securing water tube to adaptor plate and remove tubeRemove bolts securing exhaust tube to adaptor plate
aBoltsAdaptor Plate
7While applying upward pressure on rear of adaptor plate, use mallet and piece of hardwood gainst the adaptor plate to loosen gasket adhesion
aBoltsExhaust TubeWater Tube