Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 158Get this manual
13Disconnect oil hoses from oil pump adaptor plate14Remove and plug oil inlet hose to oil pump 15Remove 12 bolts securing air management assembly to crankcase and remove assembly
1997 Model
aOil Inlet Hose
55194 55971Air ManagementBolts (12 each)
Reed Block Assembly Removal