Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 366Get this manual
FORWARD GEAR ASSEMBLYComponent Reassembly NOTE: Complete the instructions in this section only if the assembly components have been disassembled and repaired or replaced1Using suitable mandrel, press the tapered roller bearing onto the forward gear by pressing on the inner bearing race, until the bearing bottoms out on the gear mounting shoulder Shift Spool Assembly
INSPECTION 1Clean the assembly with suitable solvent and dry the parts using compressed air2Inspect the shift spool assembly for damageSmall nicks and burrs may be smoothedIf any parts are damaged or worn excessively, it will be necessary to replace the complete shift spool assemblyIndividual parts are not available for the assembly3Inspect the shift spool for wear in the area where the shift crank comes into contact