Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 38Get this manual
Table of Contents Page PowerheadGeneral Information 4-1 Removing Engine Components and Engine Removal 4-2 Powerhead Disassembly .4-2 Cleaning and Inspection .4-5 Cylinder Block and Crankcase 4-5 Piston 4-6 Piston Ri ngs .4-7 Cran kshaft 4-8 Reed Valve 4-8 Crankshaft Ball Bearings and Piston Need Ie Beari ng 4-9 Powerhead Reassembly and Installation 4-9 General 4-9 Powerhead Reassembly 4-10 Powerhead and Engine Component Installation 4-14 Break-In Procedure 4-14