A little bit more technical advice please

[MickeyC]

Well soundguy, I took the carb completely apart again this morning. Cleaned it up, set everything to what the manual called for initial settings. Flopped it back and forth by my ear and floats sound like their moving freely. I also took the fuel line off blew it out, and ran a light into it... Clean as a whistle. Also for the heck of it I put a little heat shield around it b/c I have heard of the boiling fuel issue. Checked the pick up screen in the tank with a flashlight real good, also real clean looking. I am trying to tack down another 813 to see it the different carb will change it up????

 

[Soundguy]

run a wire thru the jet area.. make sure all the seats had gaskets.. etc?

 

[grainger12002]

good advice, sometime the passages look clean but have a stubborn substance hanging around in there,pass a wire through, a cut off torch tip cleaner, is a great tool to use if you have one,ordinary mechanics wire or whatever will work too..let us know what you find...

From CT

 

[Soundguy]

guitar string works good too. that's what i use...

 

[MickeyC]

When I had it apart, I went over everything to make sure I didn't miss anything. I have a red fiber type gasket under the float needle seat, one under the main adjustment needle seat, and one under the spring on the idle adjusting screw. The main and idle jet are just screwed in till seated, no packings. I did run a torch tip cleaner wire through the tiny brass press in fitting that is on the bowl surface face. That is the only thing I didn't take out. But i did see the wire go through to the passage where the main jet threads into. I sprayed everything out with carb cleaner in the aerosol can. I talked to one of the local guys here and was told I need to put the bottom half of that carb in a chem-dip carb cleaner for a couple days, cause the stuff in the can wasn't going to cut it.

 

[MickeyC]

I stand corrected... I took the carb apart again this morning and found a red packing under the seat of the main jet. It was just about disintegrated, and not much left to it. I did pull it out and stripped everything else but that little brass press in fitting that is flush with the bowl gasket surface and put the bottom half of the carb in some chem dip.

 

[buckeyefarmer]

guitar string works good too. that's what i use...

And that's why it's called a tune up. :laughing:

my tractor is in the key of G.

 

[MickeyC]

Well I did the carb in chem dip for a couple days and reassembled everything. Re-checked all settings, and vacuum tested it, no luck. The tractor still hunts/surges a good bit starting at 1500 rpms. Tried adjusting the idle&main screws and just didn't make difference. Even tried the little tug of choke trick, even though my vacuum test was good, and no luck. So I called a local buddy of mine and he let me try a another MS tsx big bore carb, slapped it on and same thing hunting/surging starting right around the 1500 rpm mark. I explained to him what the tractor was doing and he said the carb was dialed in and ran fine the last time it was on a tractor. He specifically told me not to clean or adjust it due to my situation, just put it on a try it. So I think I can rule out its a fuel issue at this point. Guess I need to study up on how to replace the centrifugal type pierce govenor.

 

[MickeyC]

Hey soundguy are you still around? I have a couple questions I haven't been able to get a clear answer about. Any help would be much appreciated. Thanks.

 

[Soundguy]

Hey soundguy are you still around? .

nope

I have a couple questions I haven't been able to get a clear answer about. Any help would be much appreciated. Thanks.

shoot.