Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 160Get this manual

Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 160

CYLINDER BLOCK AND CRANKCASE
Measuring Depth of Oil Pump Body
Standard Value 0.236 in(6.0 mm) Out of the Limit If 0.238 in(6.06 mm) or more requires replacement

Measuring Inside Diameter of Oil Pump Body

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