Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 96Get this manual

Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 96

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EMISSIONS
Homogenized Charge
A homogenized charge has the fuelair particles mixed evenly throughout the cylinderThis mixi ng occurs inside the carburetor venturi, reed blocks and crankcase