03-19-2010, 12:17 PM

boater bill boater bill is offline

Chief Ponti-yacker

Join Date: Apr 2007

Location: Cape Coral Florida

Posts: 917

The 2 ports in the middle are for the heat riser. Block them off and it will take longer for the carburetor to warm up. Not too big of a deal in warmer climates. To block them off, just cut a putty knife blade to cover the openings and hold in place with the intake bolted down.

Good luck

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