Question about John Deere 3010,3020 Tractor Basic Carburetor Repair

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I am looking for a diagram of la 140 carburetor. my mower will only run if gas is poured into carburetor.

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Sounds like you may need to remove the fuel line from the carb that comes from the tank and see if you have fuel coming out of it.If you don't,try blowing back through it to see if you have a blockage[remove the gas cap first].If you can't blow back through it then you either need a filter,a fuel line or the tank is plugged.If you did get gas to the carb the you need to take the fuel bowl off the carb ,pull the needle pin out and then clean the needle and seat.If none of the above works then soak the carb in carb cleaner for several hours and then clean the carb with brake clean and you should be good to go.If nothing works try a new carb.

Posted on Jul 15, 2010


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