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Farmall & IHC Tractors Discussion Forum
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300 Utility Carb Rebuild

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Ron Smith

03-19-2005 17:17:38




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Are there any good instuctions available for rebuilding a carburetor on a 300 Utility? I have a carb kit, but want to make sure I do it right. I have the carb apart This is my neighbor's tractor. He bought it new. I help him with his cows and we use it to feed(he is 89). It is a 6 volt tractor. Not sure what year it is. It really puts out some black smoke.




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PAULIH300

03-19-2005 17:29:37




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 Re: 300 Utility Carb Rebuild in reply to Ron Smith, 03-19-2005 17:17:38  
Mine needs tearing down soon,as the prior knuckleheads used silicone instead of gaskets to seal it up and its seeping gas (silicone and gas are not compatable).There isnt much inside the carb but the float,pin,needle,seat and the throttle shaft.From what I gather the most important areas are setting the float right (that goes without saying!)and making sure the throttle shaft lines up with the governor when you put it back on the tractor.

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Ron Smith

03-19-2005 18:25:04




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 Re: 300 Utility Carb Rebuild in reply to PAULIH300, 03-19-2005 17:29:37  

Thanks for the pointers. It seems like all of the passageways are clear. I just came in from messing with it. I'll dink with the float tomorrow. I wonder how high the float level should be? I think it is flooding. This tractor, if you take the idle mixture screw out all together, it runs better. It gets more air. The other problem is that the adjustment needle really doesn't seem to do much at all. It runs about the same no matter where it is adjusted. I need to be able to reduce the fuel in the mixture that is for sure. I think they make some gasket maker that will hold up to gas and oil...possibly the black stuff will. You might just want to press a piece of paper on it and cut out a thick gasket from gasket paper using an exacto knife.
I see what you mean about the throttle shaft lining up.

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PAULIH300

03-19-2005 18:33:48




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 Re: 300 Utility Carb Rebuild in reply to Ron Smith, 03-19-2005 18:25:04  
I have a complete carb kit,just need the time to tear into it.The hackers who "fixed" this tractor in the past didnt have a clue.I have found more cobbed up stuff than you could imagine.A clear siliconed carb is just one of the mini disasters.
Hopefully,I'm knocking the problem areas down one by one.



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Ron Smith

03-19-2005 19:08:16




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 Re: 300 Utility Carb Rebuild in reply to PAULIH300, 03-19-2005 18:33:48  
I tell you what though, they are nice sized tractors for getting stuff done. They seem really stable. The only other thing about this tractor that is a pain to deal with is that it doesn't want to start when below about 20 degrees. We have to pull off the 6V battery and recharge it with a battery charger. It just doesn't seem to charge very well. Probably because we only run it about20 minutes a day. I am hoping the carb rebuild will help the cold starting situation out some. Using clear silicone on a carburetor doesn't sound too wise. Must be a gummed up mess.

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gascolator

03-20-2005 14:08:03




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 Re: 300 Utility Carb Rebuild in reply to Ron Smith, 03-19-2005 19:08:16  
We had hard starting below 20. It was my fault for ignoring everyone's advice and
not going through the ignition prior to winter. Now she has new everything from the rotor out to the plugs, she starts
great, provided you keep the throttle shut and the choke out.

I have a nice 12V single-wire kit in the box I was going to put on this spring. (When we got the tractor it wasn't charging
but a new regulator from NAPA solved that
and meanwhile I'd ordered the 12V kit.) It's
working so well as a 6-volt negative ground
that I may not bother. It's become a case of
'it ain't broke.'

In the winter, we keep it on a trickle charger.
You lose too much charge in the cold. In the
other 3 seasons, it isn't necessary, as we start it up and then go mow for two hours.
Anything above 1000RPM, the generator is charging fine.

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PAULIH300

03-20-2005 08:50:40




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 Re: 300 Utility Carb Rebuild in reply to Ron Smith, 03-19-2005 19:08:16  
Convert to a one wire 12V NEG alternator....those old generators dont charge quickly at all.My Delco 10SI conversion works great....charges the battery in only a split second (lol),of course it starts on the first crank anyway so it never drains the battery much.
As for the 300/330/350 Utes...yes,I agree totally that these are very nice machines that are manueverable,powerful (300 and 350 anyway),and so versatile.The bad steering is a major drawback though and the troublesome standard duty TAs are a ever so common problem these 50 years later.Overall,anyone who could have bought one new in 55 and taken care of it,would still have a very nice tractor today.I dont see that happening with todays plastic stuff/computer controlled/electronic/pollution regulated,automated machinery.

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Ron Smith

03-20-2005 13:28:21




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 Re: 300 Utility Carb Rebuild in reply to PAULIH300, 03-20-2005 08:50:40  
The steering on this one kind of binds a bit or something. My neighbor thought it was damaged at some point. The engine has never been rebuilt. I don't think that much has been done to it at all. He said it was his wife's tractor and she could plow circles around him on it. I just finished rebuilding the carb. I hope it works. Charging it with the battery charger wouldn't be such a big deal if there was electricity out in the barn. We have to pull the battery out and bring it up to the house.

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