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Discussion Starter #1
I acquired a 1988 Bayou 220 a few months back, not the prettiest looking rig but whatever. I was told it didn't run because the carburetor was shot, and sure enough it was. Now I couldn't find anything on the size of the carburetor but I believe it was a 38mm judging by the number stamped on it. My question is should I get the same size carburetor or should i get a smaller one like a 34mm? given that it is 20 years old now.

Thanks for your help!

Here's some pics:
http://i17.photobucket.com/albums/b98/joshk23/DSCF0031.jpg
http://i17.photobucket.com/albums/b98/joshk23/DSCF0029.jpg
 

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That bike does not use a 38mm carb, more like a 28mm carb. What is shot on your current carb? They can be rebuilt 99.9% of the time.
 

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Discussion Starter #3
The whole inside of the bowl is corroded, and the bottom of the mixing chamber is the same also. It got so bad pieces started breaking off as soon as you touched it. And are you sure its a 28mm? I checked the engine side of the carburetor and i got 38mm. I dunno, I got this quad a few months ago and I want it running! lol. What I got off the carb was Mikuni Corp and on the side of that was stamped V38 and underneath the 3 there was a 2
 

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I see. Measure the carb with a set of calipers, to make check the size. You cant always go by the model number. I know it doesnt have a 38mm carb, because the engine would barely run with one.
 

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I would just order an OEM replacement carb from a Kaw dealer. The price will be around $200 and change, and they are still stocked for the 88 Bayou 220.

Given the age, I would also order the replacement rubber carb holder if there is any evidence of stiffness or cracking.
 

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Discussion Starter #6
ok I'll re-measure. now just to be sure that I do it right, which side of the carb do i measure and do I take the inner or outer diameter?

Here's some pics of the carburetor when i took it off the quad.
http://i17.photobucket.com/albums/b98/joshk23/DSCF0014.jpg
http://i17.photobucket.com/albums/b98/joshk23/DSCF0013.jpg
http://i17.photobucket.com/albums/b98/joshk23/DSCF0012.jpg
http://i17.photobucket.com/albums/b98/joshk23/DSCF0011.jpg
http://i17.photobucket.com/albums/b98/joshk23/DSCF0010.jpg
 

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Discussion Starter #9
ok, not sure how how got back to 38mm when i measured then???? haha. Thanks again
 

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Discussion Starter #10
ok so I checked the air cleaner side of the carb and got 1.5" which is 38.1mm (which is where I confused the size of the carb) and the engine side came out to 1 7/32" which is 30.9mm. So I'm guessing I have a 30mm carb, sound right?
 

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You need to measure where the slide is to tell what size it really is. If you find a carb that has the same outside diameters on both sides, it will fit, but you will probably need to rejet it. Just look on Ebay and find a used original one.
 

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Discussion Starter #12
ok, I actually might be receiving a carburetor from Matt R here on the forums. If not i'm ordering one from mrcycles.com.

Thanks again for you help, Josh
 
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