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Vintage Sears Garden Tractors

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Vintage Sears Garden Tractors
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Re: SS12 1972 HH120 Tecumseh engine speeds up and slow down

Its sucking air somewhere via bad gasket on the carb, or lose or worn throttle shaft..Or possible a bad head gasket...Or your mixture is to lean and its surging do to that..

Re: Re: SS12 1972 HH120 Tecumseh engine speeds up and slow down

thanks, I will readjust the carb tomorrow after work.