Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 39Get this manual
Powerhead General Information Powerhead "Disassembly" andReassembly" instructions are printed in sequence that should be followed to assure best results when removing or replacing powerhead components, If complete disassembly is not necessary, start reassembly at point that disassembly was stopped ,
8-1Cylinder BlockAlignment PinPlugGasketBoltBoltGasketCylinder CoverBolt 10- Fitting 11Tell-Tale Hose 12Clamp 13Lower End Cap 14Bolt 15Washer 16Reed Valve 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Reed Stop Screw Clamp (Wires) Crankshaft Assembly Roller Bearing Upper Ball Bearing Lower Ball Bearing Flywheel Key Upper Retainer Lower Retainer Upper Crankcase Seal Lower Crankcase Seal Piston Piston Ring Piston Pin Retaining Clip