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Wisconsin Engines Single cylinder up to V4 engines.

Wisconsin Engines

Wisconsin Screw Loose


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  #1  
Old 07-28-2005, 08:31:56 PM
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Default Screw Loose

I have a Wisconsin model ABN. Runs fine, except for the mixture screw which comes up through the bottom of the float bowl vibrates its way out.
Anybody have a cure for this? I don't want to do any damage to things by roughing the threads.
~M~
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  #2  
Old 07-28-2005, 08:43:09 PM
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Tanner Remillard Tanner Remillard is offline
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Default Re: Screw Loose

Are the threads wore out? I would suggest locktite, but I have never used it before, so I dont know how well it works, how tight it gets, and if it is fuel resistant. I'm sure someone with some experience with this can suggest something.
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Old 07-28-2005, 09:11:18 PM
Don C. Wiley Don C. Wiley is offline
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Default Re: Screw Loose

Monte;

A lot of old carburetors have a spring on the adjusting screw to keep it from moving. If you have room for a short compresion spring, that will be your easiest fix. Be carefull with the locktite, there are three different ones and the strongest one will require 300 degrees of heat to get it loose. I can't remember which one is which, so you need to check with a SMART person at the hardware store or auto parts store.

Good luck.

"DELCO DON" Southern Illinois
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Old 07-28-2005, 09:20:42 PM
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Andrew Albrecht Andrew Albrecht is offline
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Default Re: Screw Loose

Red Loctite is the strongest and takes heat to remove it. Blue is next in line and would still be to strong for your needs. Green is the next Wonderful color and would probably work. and how much you put on determines how well it holds. You can buy screws with locktite allready applied and they only use a small dot to hold a screw. I would try the spring before the locktite. Good Luck.
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Old 07-28-2005, 09:28:14 PM
Joe Morris Joe Morris is offline
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Default Re: Screw Loose

Monte. Go to Wal mart and get a tube of seal all, put it on the threads. it is not effected by gas oil or water. But if it need be it can be broke loose should you need to remove or adjust the screw in question It is in a red and yellow tube much like testors cement comes in only larger. It is better than useing teflon tape on fuel fittings. I have been useing it for years with no problem. Hope this will help a little, good luck in a good hobby. Joe Morris
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Old 07-28-2005, 09:38:11 PM
BobRR BobRR is offline
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Default Re: Screw Loose

Monte Like Don said a lot of mixer screws have a small spring on them to hold some tension so they wont vibrate out.If possible I would use a spring. One like in a ink pen will work in a lot of cases.BobRR
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Old 07-28-2005, 10:00:34 PM
Bill Sherlock Bill Sherlock is online now
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Default Re: Screw Loose

If your engine has the Marvel-Schebler carburetor, it's likely missing the packing that seals and tightens the adjusting needle, or packing has shrunk to were it doesn't compress enough to seal when the packing retainer nut is tightened. Replacing the packing with new material or possibly an "O" ring should fix the problem.

Bill
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Old 07-28-2005, 10:18:22 PM
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Default Re: Screw Loose

Thanks!! I bet the packing is shrunken, as the screw does tend to seep gas. I'll try that first, then prob'ly the spring. I've got Seal All, that'll be the third option. Loctite isn't high on my list because I may need to make adjustments on occasion.
Thanks again
~M~
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Old 07-29-2005, 04:31:37 PM
Bruce Wambach Bruce Wambach is offline
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Default Re: Screw Loose

Sometimes teflon tape wrapped around the needle valve will work and also alow you to still adjust the carb.

Bruce in PA
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Old 07-29-2005, 07:57:07 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: Screw Loose

Go to a good plumbing supply, and ask for Graphited Valve Packing. Wrap a fet turns around the needle and tighten the packing nut.
Andrew
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Old 07-29-2005, 08:54:38 PM
Zira Zira is offline
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Default Re: Screw Loose

In a pinch, teflon packing for water faucets will work, and if you are reeally in a hurry, try dental floss.
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Old 08-07-2005, 11:09:07 AM
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Default Re: Wisconsin Screw Loose

Thanks for all the suggestions!! I'll let you know what I did and how it worked..........IF I get time, someday
~M~
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Old 08-07-2005, 02:28:18 PM
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Gene O. Carpenter Gene O. Carpenter is offline
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Smile Re: Wisconsin Screw Loose

Kite string alway's worked for me whenever I had any problems with leaking needle valves on carbs or sediment bowls !!! Also works as thread sealant in a pinch ! Gene
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Old 08-14-2005, 09:48:57 PM
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Default Re: Wisconsin Screw Loose

For now, I used thread tape on the adjustmant screw. Ran the engine for about half an hour and things seemed to stay put.
Thanks again for the advice.
~M~
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