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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28668
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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cub cadet 2135. Kohler 12.5 OHV. runs geat for about 15 to

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cub cadet 2135. Kohler 12.5 OHV. runs geat for about 15 to 20 minutes and cuts out. It won't start unless I let it cool down...What's up with that? Fuel line, spark, and air OK.

Is it an older unit, ? If so , I would suggest try adjusting the valves. Set on .006 on intake and .010 on exhaust. From what you say, everything else is there. Let me know. Thanks.

Customer: replied 7 years ago.
Yes, 14 yrs. old, but I am much older and retired. Time estimate for this? easy accessable? I've done maintenance but not much tear-down on vehicles. Is it worth the time on such an old motor, I am not an enthusiast but I am a tightwad and don't mind spending a little time on this.
Whats wrong with being retired, i'm there myself. It should be an easy fix. This is the overhead valve engine, meaning you have a rocker cover. Just remove rocker cover, locate valves, turn engine till one opens(moves down) and set the other, then repeat for the other. The setting is .006 -.008 on intake and .010 -.012 on the exhaust. I didn't look, but this is just a one cylinder engine isn't it?? If not you will have to do the other side too. We just call it thrifty. Thanks.
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