The Y39-5 two barrel Rochester marine carburetor, with two idle mixture screws, that you have chosen has the following variations. We need your carburetor number, engine size, and boat information to ensure we deliver the same marine carburetor for your engine/boat. Below are pictures showing choke types, linkage variations, and where to find the carburetor number. Your marine carburetor will be flow tested, calibrated, and idle adjusted making it ready for easy installation.
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