What carburetor do I have?

[Gybson]

Hi all!

Just picked up a 19' 1987 Citation Cuddy from a buddy of mine for a steal. It needs a new manifold as the current one has a crack in the water jacket. When shopping I found the correct manifold, but there's two available. One made for a Mercury carb and another for a Rochester carb. How can I tell the difference? The carb SAYS Mercury on it, but I want to be sure before I place my order as I'm told that Mercury branded Rochester carbs as their own for a period. Does anyone happen to know Citation boats well or give me a way to tell visually beyond the branding on the carb?

Thanks a lot!

Picture of the old (new!) girl.
https://fbcdn-sphotos-a.akamaihd.ne...848991420_530921419_12503078_1040159549_o.jpg

 

[cr2k]

Re: What carburetor do I have?

A Mercarb has only 1 idle mixture screw. Be aware there are 2 different Mercarbs.

 

[Gybson]

Re: What carburetor do I have?

Great, thanks! Do you happen to know if the bolt patterns vary between the Mercarbs themselves? I probably should have mentioned that it's the 3.0L 140HP engine that's in this gal.