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There could be a few problems. Start with disconnecting the priming line from the carburetor and hold near your ear and push the priming bulb. If no air comes through there's a hole in the priming line or bulb. If that's not the problem then make sure the gas line is not clogged. Drain the gas from the tank and carb, straighten a wire coat hangar and run it through the gas line to see if it is clear. If there is no problems with the priming line and bulb and the gas line then it's most likely the float in the carb that is not working properly. The easy way is to spray carb cleaner in the carb and hope this frees the float. If the machine still doesn't start then you have to take apart the carb and clean it. MAKE SURE that you take special attention to how the "pin" is attached to the float when you take apart the carb. Clean all openings with carb cleaner and Q-Tips and use a sewing needle to clean small openings. If this doesn't work then you're obliged to order a new carb on line. There not expensive. Mine cost me under $30.00 for a Toro 521.

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11y ago

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