1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 195Get this manual

1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 195

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Enrichener System Description Fuel is gravity fed to the valve from the float bowl of the top carburetor via hoseWhen the key (or choke button) is pushed in (and held in) current is sent to the valve