I have the same setup on my 1970 120...there is only one choke setup for the dual carbs--the back carb does not have a choke. You can get most of the parts from the salvage yard...look for an early 70's Ford in line 6 and you should be good to go. The cast threaded piece also broke on mine...so I just swapped the carbs around and retuned them....run great!
You could install a manual choke setup too...the parts store sells the kits usually in the 'help' section for about 20 bucks....but that would be a pain to have to go aft and pull the choke and release it...although it can be done.
A standard syncro meter works great on getting them tuned--just take off the air cleaner bails.
--- On Tue, 8/18/09, Nexi <ohnoitsnexi@...> wrote:
> From: Nexi <ohnoitsnexi@...>
> Subject: [OMC-Boats] Question about carbs
> To: omc-boats@...
> Date: Tuesday, August 18, 2009, 11:52 PM
>
> I've got a question about the carbs on a 1967
> Sportsman 120. I've linked to 2 pictures
> below. The first picture shows a black cover on
> the carb and a pipe coming out from the left side
> which goes down into the engine. The second picture is
> missing the cover as well as the pipe. It looks
> like someone broke the threaded piece on the side
> of the second pic. I did look around for someplace that
> a second pipe would go and didn't see anything. I'm
> just wondering if this is normal or if both the cover and
> pipe are supposed to be on the carb. Can I run the boat
> without them?
>
> On a side note... I do have a service manual on the
> way.
>
> http://i30.tinypic.com/20u1vli.jpg
> http://i30.tinypic.com/vintc7.jpg
>
>
>
>
>
>
> -----Inline Attachment Follows-----
>
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>
Received on Wednesday, 19 August 2009
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