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Farmall & IHC Tractors Discussion Forum
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560 carb problems

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560 owner in KS

12-31-2007 12:10:50




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I've got a question for y'all. I just had the carburator on my 560 apart, cleaned and everything. put it back on the tractor and run it, it still wants to slowly "ice up". any suggestions? is the carburator junk? Before it'd ice up real fast. now it takes longer, but, it still ices up slowly. i've heard about this problem somewhere,but, i need more input. also, what are the proper settings for the idle mixture screw, idle screw, and main fuel screw? I do not have a good manual yet, just a I&T manual which i think is worthless. any suggestions and help would be appreciated.

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Too Far Gone

12-31-2007 22:51:28




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 Re: 560 carb problems in reply to 560 owner in KS, 12-31-2007 12:10:50  
Every tractor Ive ever had does it.Heres how to cure it.Fire it up,,,go get a cup of coffee,visit the bathroom,feed the critters,or anything else that takes 15 or 20 minutes,by then it'll be gettin warmed up enough to not worry about it anymore



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Heat Houser

12-31-2007 14:43:23




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 Re: 560 carb problems in reply to 560 owner in KS, 12-31-2007 12:10:50  
Check to see if your heat riser is working. On the outside of the manifold should be a strip of bi-metal coiled up. (Maybe 5 turns coiled up) The outer end will be bent to form a hook which hooks over a 1/8 inch dowel that sticks out from the side of the exhaust manifold. The inner portion of the coil slides into a slot on the heat riser's shaft. The heat riser should move easily as it is the expansion of the bi-metal strip that opens or closes the heat riser. If you look on the backside of the manifold, you will find a cast arm which counterweights the heat riser. When closed, the heat riser directs exhaust gas thru a passageway in the intake manifold to preheat the intake air. This will help your carb icing but in the right conditions, it may still ice. To burn gasoline, it must first be vaporized. To turn a liquid into a vapor, it takes heat therefore the carb icing.

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old

12-31-2007 14:21:16




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 Re: 560 carb problems in reply to 560 owner in KS, 12-31-2007 12:10:50  
Would you believe that iceing like that is normal and all carbs do it. Worst when its cold and or wet out but its just how it is. It doesn't happen as much on cars and trucks because of the heat tube from the manifold and also because of the hood holding heat in but a tractor has open sides so the heat goes bye bye fast. Things you can do to make it happen less is a tarp over the engine/hood. Or some other type of thing rigged up to help hold the heat around the carb. Or just let it run 10-15 minutes before you work it hard so the manifold get a chance to warm up.

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D Slater

12-31-2007 13:29:00




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 Re: 560 carb problems in reply to 560 owner in KS, 12-31-2007 12:10:50  
If the manifold heating valve is not working it would probably help with the problem if repaired.



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RustyFarmall

12-31-2007 13:03:12




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 Re: 560 carb problems in reply to 560 owner in KS, 12-31-2007 12:10:50  
There is nothing wrong with the carburetor. The frosting up condition is something that just happens whenever the ambient temperature and humidity is just right. Some folks claim that adding de-icer to the fuel will help. The suggestion given in another reply is also a good idea. Another trick is to make some sort of cover that can be placed around the carb to help hold engine heat.



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I love farmalls

12-31-2007 12:39:22




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 Re: 560 carb problems in reply to 560 owner in KS, 12-31-2007 12:10:50  
For winter use I made a heat exchanger. I took a piece of duct pipe about 10" in diameter,put a 'lid' or metal cap on one end and put a hole in it so the exhaust pipe will fit through and slide down to the muffler, then on the side of 10" pipe, I mounted a about a 4' flexable exhaust pipe to reach the air cleaner pipe after you remove the precleaner. That way it sucks the warmer air off the warm muffler. Been doing it for 20 years.

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