Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 123Get this manual
CYLINDER BLOCK AND CRANKC ASE
POWERHEAD
Section 4BCylinder Block and Crankcase
Table of Contents
Specifications 48-1 Special Tools 48-3 PowerheadGeneral Information 48-5 Cylinder 810ck 48-6 Crankshaft 48-8 Oil Pan 48-10 Powerhead Removal Removing Powerhead Components Powerhead Disassembly Inspection Powerhead Reassembly Powerhead Installation 48-13 48-13 48-14 48-22 48-31 48-43
Specifications
CYLINDER BLOCK STROKE CYLINDER BORE
Number of Cylinders
Di ameter Standard in(0.50 mm) TaperOut of Round Maximum Bore Type Piston Type .0 at Skirt Standard Oversize-0.020 in(0.50 mm) Piston to Cylinder Clearance Piston Clearance Limit Ring End Gap (Installed) Top Middle Bottom (Oil Ring) Side Clearance: Top Middle Bottom (Oil Ring)
I Ratio Decompression Without Decompression (Exhaust Rocker Removed)
I 1.77 in(45 mm)