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4020 gas tractor rund real rough when hot

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sheila francis

07-05-2014 20:52:34

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runs good when first started, then as it warms up it sputters and backfires, turn it off and restart. I am posting this for my hubby

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07-06-2014 19:21:07

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 Re: 4020 gas tractor rund real rough when hot in reply to sheila francis, 07-05-2014 20:52:34  
Possibly coil or condenser since heating up causes problem unless it's running out of fuel and shutting it off lets gas catch up. Check shutoff under tank.

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07-06-2014 17:42:35

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 Re: 4020 gas tractor rund real rough when hot in reply to sheila francis, 07-05-2014 20:52:34  
Which carb?? MS or Zenith? Many MS were changed to Zenith to make them work.

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Mikein Ky

07-06-2014 17:15:04

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 Re: 4020 gas tractor rund real rough when hot in reply to sheila francis, 07-05-2014 20:52:34  
I have had several gas 3020 and 4020 John Deeres. Had similar problems with all of them. Tried everything. I now have a 4020, that was gas when I got it. It is now a diesel. The best thing I ever did to one. I never could keep a gasser running right. I have a 2510 gas that runs perfect. I don't know why the later ones seem to run good.

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