Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 226Get this manual
OIL SEAL CARRIER ASSEMBLYCOMPONENT REASSEMBLY Note: Complete the instructions in this section only if the assembly components have been disassembled and repaired or replacedAssemble the large oil seal (with the lips of the oil sea facing the driver shoulder) onto the short end of the oil seal driverPress on the oil seal driver until the driver bottoms against the carrierDo not press so hard as to damage the oil seal carrier while driving the oil seal l)
Assemble the small oil seal (with the lips of the oil seal facing away from the driver shoulder) onto the long end of the oil seal driver