Question about Craftsman 20 hp 42 in. Deck Lawn Tractor - CA Model

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Craftsman mower with 20hp B&S Intek won't start/run

I have a Craftsman riding mower with 20hp B&S Intek engine. A few days ago, I made 3 or 4 passes (10 mins.) mowing when engine "bogged down", sputtered and popped, coughed out black smoke and quit. Now, engine will turn over and try to fire, but won't run - just "pops".

I have checked flow through the fuel filter - it's OK. I have removed and cleaned spark plug, as well as cranking with plug out to check spark. Also tried spraying starting fluid into carb - engine started and ran for few seconds, so it's getting spark.

One sidenote: the throttle linkage doesn't look to me like it's operating correctly; when you push the throttle handle up (to fast or choke), the cable slides normally, but nothing actually moves the throttle lever on the carb.

Engine ran fine before this. What else should I check?

Thanks,
Robby R.

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Sounds like you have gone through all the rights steps. if you can fire on starting fluid you have a fuel problem in carb. most likely picked up some dirt into your jet inside you bowl area. take carb off and shoot carb cleaner through all orifices real good and try again. there are plenty of movies on youtube on how to clean a carb on riding mowers. hope this helps.

Posted on Dec 13, 2013

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That throttle cable issue sounds like it may be the culprit. the cable housing (the outer casing for the wire throttle cable) may not be anchored correctly. Which may be allowing you to move the throttle without any change at the butterfly control on the carb. make sure the cable housing is anchored at both ends.. by the throttle control and at the carb area.. That may be your problem... hope it is that simple...
K

Posted on Jul 23, 2009

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