Cub Cadet tractor (Kohler) intermittent stalling.

[simple_gifts]

A friend of mine has a CC with a 1 cylinder Kohler. She has it regularly serviced every fall or spring. Recently after totally warmed up, it occasionally misses and then stalls; it does not appear to be load related. It immediately restarts too. One time it backfired thru the muffler which the manual indicated a "lean condition" (I would have thought rich) Other than the stalling, the engine runs like a top.

Qo these engines need mixtures constantly adjusted thru the season? Is a backfire really an indication of too lean?
I'm thinking the air filter might be clogged or maybe there is a fuel filter. Anyone have some experience with this?

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-Thomas

 

[Red Dog]

Sounds like you need to check the coil. My 14hp kawasaki did the same thing. New coil fixed it. Let us know how it turns out. Good Luck.

 

[JTK]

Kohlers tend to be super sensative to fuel filter type. Dunno why exacty, but I've seen fuel starvation happen to kohlers running aftermarket fuel filters. Another cause could be a plugged gas cap vent, or failing fuel pump that starts to warp/leak when the engine warms. Best bet is to try to determine if this is fuel or spark related.

Joel