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So I'm still having a problem with my right side carb not supplying enough fuel at idle. Off idle the response is good but it's backfiring meaning it's still too lean. I've turned the mixture screw out quite a ways and it gets better but I believe that carb is still pretty crudded up even after cleaning them several times, so I want to REALLY clean them this time. What's a good way to get them nice and clean? Special cleaners?

Thanks in advance.

Take them somewhere that has a sonic parts cleaner.

It uses normal water and detergents plus sonic waves to clean parts. This is much better than a normal parts dip, because parts dips destroy rubber seals n stuff.

Thanks for the reply.
Any idea on what that usually costs?

Bucket of carb cleaner ($50). Pull ALL the non-metal parts off the carb, like so:


They come out looking like this:


Don't forget to replace the fuel lines between and to the carbs. There can be all kinds of good stuff in there:

Did you soak the carbs or scrub 'em/spray 'em? And how long?

Nice pics by the way!

Yamaha has a product called "Ring Free" that I have use to good results on my old XS650s. This product is sold at the parts counter at your Yamaha shop. It will clean your gas tank, petcocks, fuel lines, carbs and carbon from the heads. It will even clean the tarmac behind the bike. You use the shock treatment in one tank of gas. and then run the second tank thru for good measure. Keep in mind, you will have to change oil and filter after the treatment. Ring Free is designed to clean dirt, rust, moisture and carbon from both 2 and 4 stroke engines. I used it on an old XS650D that sat for 13 years and did not pull the carbs for cleaning. XS

ok, i like the yamaha parts cleaner, but is there any way that i can use spray carb/choke cleaner efficiently? im getting ready to tear into a set of carbs that have been sitting for about 10 yrs....any suggestions, regrets, advice?
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I like to use spray carb cleaner and plenty of air blown thru the jets and passages. I also have used spray can brake cleaner too, but it is pretty hot and may melt any little rubber seals and gaskets that you don't remove. I forgot to mention that the Ring Free product only cleans the carbs while you ride. If the bike is up and running, approx 100 miles should do the cleaning. XS