Today is the first I used IH C to mow with after turning the main jet out another 1/4 turn. It takes about 40 minutes to mow yard. Tractor was up to normal operating temp, 135 degrees. The boss was using it today. When she turned the tractor off, the throttle was in the middle position, more than a fast idle. I was expecting a little dieseling. Nothing, engine stopped like it should.
I think this is proof that a LITTLE lean of peak temps in THE COMBUSTION CHAMBER are cooler. Going way past lean of peak, from what I've read, will cause detionation, pinning, and do damage to pistons and valves.
I'm happy with my experiment, well worth the $22 for an exhaust temp meter. Bet the gas savings will pay for it really fast.
Now I need a way to lean out the 20 hp kohler, which and no carb adjustments.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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