1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 366Get this manual

1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 366

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STRATIFIED VS HOMOGENIZED CHARGE DFI engines use stratified charge inside the combustion chamber to aid in reducing emissionsAll other models use homogenized chargeThe difference between the two is: