QuestionQUESTION: I have a Kohler 15 HP engine on a rider, YKHXS.4262GB, After about a 1/2 hr, apx. engine slows down and dies out. Will not restart til it cools down? Any suggestions? Oil level ok, and spark plug looks ok.
ANSWER: Have you replaced the spark plug? I have had plugs cause this problem.
If you go to Kohler's website, http://www.kohlerengines.com/home.htm , you can download the full service manual.
How old is the engine? When was the last time the valves were checked?
Let me know.
Eric
---------- FOLLOW-UP ----------
QUESTION: Spark plug was replaced, and properly gapped. Was told by a service tech where I was working, he said he figured it to be the ignition modudale, as did a teacher in my Power Equipment class. I have already downloaded the service manual. Changed oil today, and will try it out again.
AnswerI have had a few ignition modules fail but you need to be certain before shelling out big bucks for a new module. Do you have an inline spark tester to verify spark?
I would recommend isolating the mower wire harness from the module to verify some other part is not causing the problem. This is easy to do, just dis-connect the small wire connect to the ignition coil. NOTE, you will not be able to shut-off the mower with the "kill" wire disconnected from the coil. You can install a temporary switch, remove the spark plug wire or choke the engine to shut it off. I prefer the temporary switch.
Eric
