Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 124Get this manual
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CYLINOER BLOCK AND CRANKCASE
CAMSHAFT
Inside Diameter of Oil Pan Bearing: Crankshaft "A" Camshaft "B" B
0.985 in(25.01 mm) 0.5515 in(14.01 mm)
Crank