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HELP! Cub Cadet 108 W/ K241 not running

6K views 17 replies 6 participants last post by  Cub Cadet Head 
Possibly a sticky valve. When the engine warms up the clearances tighten and deposits on the valve stem and/or guide cause it not to close well. I'd try some Marvel Mystery oil in the gas and maybe a little Seafoam sprayed into the carb while running . That will usually clean them up.
 
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