Here lately, I've been experimenting with something I read here on cleaning carburetors. I went to Harbor Freight and bought the larger Ultrasonic cleaner that they sell. Then I went across the road to Wal-Mart and bought a two liter bottle of Simple Green. I mixed the simple green in with water at a 1:1 ratio, enough to fill the ultrasonic cleaner.
Then I disassembled the carburetor (Carter off a K301) as far as I could and let it clean for about half an hour with the heater on. Reassembled it with new gaskets and it's run better for me than it has in a long time. Guess there must've been something in there I was missing. I had about a tablespoon of crud laying in the bottom of the cleaner when it was done, so it cleaned the outside out pretty good too. I wasn't sold on the idea until people pointed out that submerging the carb in the cleaner and running it allows you to clean out passages that you normally couldn't get to or would end up replacing Welsh plugs on. Oh, by the way, flush it out with gas or put it back on the engine and start running it right away, otherwise minerals in your water will deposit on the surface and that can cause more problems.
Probably not very cost effective to do one carb. If you have a lot of things you can clean with it, it might not be a bad investment.
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1966 Cub Cadet 122
1968 John Deere 110
1968 Cub Cadet 104
1971 Cub Cadet 107
1975 Cub Cadet 1650
2 Brinly Plows, Brinly Disk, Brinly Grader Blade, Brinly Box Blade, 3-42" decks, 1-50" deck, a Sears 3 pt hitch I bought for $20, a couple dual wheel adapters, CW36 & QA36 snow throwers, 1A tiller, and a partridge in a pear tree.
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