Question about Craftsman 42 in. Deck 19.5hp Lawn Tractor

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Tecumseh engine wont run right

I have a 1960's tecumseh 10hp engine that that back fires out the carb and it does run for a little bit but it dies after about 5 min it will not throttle up it just dies it has good compression and it does not smoke i have also checked the flywheel key it is not been sheared i am lost on this thing please help.

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  • znj_akes Nov 16, 2008

    i bought it from a guy who said he used it up tell august then it started running funny i have rebuilt the carb and have set the mag gap to specs but for some reason it will just idel if i try to throttle it up it just dies


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Has this engine been inactive for a long time?? If it has, mMaybe the carb is gummed up.

Any chance the position of the magneto has changed? A second thing you might check (especially considering this is a 1960's vintage) is the gap between the mag coil and the actual magnet is fouled with dirt/rust. That gap is usually about the thickness of a dollar bill.I have used fine sand paper in that gap to clean it,

Hope this might help Loringh

Posted on Nov 15, 2008

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Have you changed spark plug? When they backfire through carb. it usually means too lean( not enough fuel, partially cloged fuel line) or weak or out of time spark. joedog

Posted on Feb 26, 2009

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