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52 sidemount 8N surges, dies

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Henry Harris

06-22-2002 14:33:26




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Fellows I have fought this for weeks and have read posts for years back, still puzzeled. here is list of attempts, guesses.Cooling ok, fuel delivery ok (all 3 strainers ok),plugs,wires,points condenser,coil,cap rotor renewed,timing and centrifugal advance ok,appropriate ballast resistor (old 12 v conversion), new harness, compression 90 lbs even all 4,carb rebuilt but was the original(possible suspect) when tractor dies after violent surging it will start back quickly only if I open drain at bottom of carb and drain. Otherwise she needs to sit for a few minutes.

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more information please==bj8n/mt

06-22-2002 17:15:14




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 Re: 52 sidemount 8N surges, dies in reply to Henry Harris, 06-22-2002 14:33:26  
Did this trouble come on out of a blue clear sky or did it start after something you did to or for the tractor?

Does this trouble take a while to come on or does it start right when you fire up? Does load affect onset?

Does this trouble feel like running out of gas? Does the amount of the gas in the tank affect onset?

If it started after the carb rebuild how did you set the float? I use a quarter inch drill bit.

When you rebuilt the carb did you clean out all of the jets and passages really well with fine wire or a welding tip cleaner? Compressed air won't get it all of the time.

There is so much experience here that if you put up some more information about the trouble I will bet someone will ride to the rescue.

Your mileage may vary

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Bill W.

06-22-2002 17:06:19




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 Re: 52 sidemount 8N surges, dies in reply to Henry Harris, 06-22-2002 14:33:26  
Henry: It sounds like one of your jets is stopped up in your carb. A carb rebuild will not do the trick unless you take every little jet out and clean orifices out good. In the carb nozzle which you can see down the venturi hole, are several teeny holes which get stopped up and prevent gas from flowing and vaporizing in the ventura to go into the intake manifold. If you can get a long shaft 7/16" socket over this nozzle shaft or maybe a pair of strong needle nose pliers and remove it, you can take a small wire and clean out those holes. It may make the difference. If you sand blast the carb halves, be sure you take all the jet openings out or else you will stop them up with blasting media. After sand blasting or other cleaning, blow out well with kerosene or other cleaner and compressed air. This and new rebuild kit should correct apparent gas flow problem within the carb. Also be sure no air leaks around mating gaskets between carb halves and carb and manifold. You can tell if there is an air leak by spraying light amount of starting fluid or WD 40 around the carb while tractor is idling. If engine surges, you have an intake leak around one or both of these gaskets.

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Rusty

06-22-2002 16:47:43




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 Re: 52 sidemount 8N surges, dies in reply to Henry Harris, 06-22-2002 14:33:26  
You can get her going after draining the fuel from the carb. Not much could be wrong with the carb. Unless the float or valve is sticking causing it to flood.



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