broken carb idle tube

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broken carb idle tube

Postby Chuck 53 Cub » Sun May 02, 2004 4:04 pm

I just started off Sunday with a bang... somehow the carb idle tube broke off flush with the threads. What is the best way to go about removing the broken off part without making matters worse????
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Postby Bigdog » Sun May 02, 2004 4:10 pm

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Postby Jerry Caton » Sun May 02, 2004 5:41 pm

Just did this Myself ! I read the suggestions in "the best of H.L. Chauvin's Messages" (link on home page) , and under "carberutor saved" found the answer. Except i used a 1/16" followed by a 5/64", followed by a 3/32" right hand bits, held in a pin vise. VERRY slow work, but after the 3/32" bit you can see the aluminum thru the brass threads. The used a dental pick (any needle sharp pick would do) to peel up the first few threads, and worked them out with a fine needle nose plier. It's very slow , tedious work, but there arent too many options at this point . By the way, this cub had been parked for several years with the petcock open, and an empty tank. No gasoline deposits, but I got about 2 to 3 teaspoons of dry white powdery "stuff" out of the bowl. New float,new needle and cage, new idle tube and gaskets at the IH dealer here for $49 and change. The rebuild kit would have been over $100.00 !! Right now its off to be bead blasted and cleaned, should look like new when done. I spose i should mention that Lurker Carl 's article on carb fixes helps tremendously !! I had to bend the heck out of the throttle body, it had gaps of over 1/8" at some points. Bent it back OK and trued it with a file per instructions and the fit is near perfect !
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Postby Chuck 53 Cub » Tue May 04, 2004 6:50 am

Thanks guy's....I looked at both sites and it looks like I have some warpage as well to take care of in addition to the idle tube repair. Let the "root canal work" begin
Chuck 53 Cub
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Posts: 8
Joined: Mon Apr 19, 2004 6:14 pm
Location: Southern Illinois


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