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 - Seeing an Old Friend - by Joe Evans. Dad had a concrete contracting business starting in 1960. One of his first pieces of equipment was a Ferguson TO-35 with a Davis loader. Dad replaced the TO-35 with a MF 202 Workbull, essentially an industrialized Ferguson 35 I am told. Dad bought the 202 new in 1962, and I recall quite clearly going to the dealer with him to sign for it.
... [Read Article]
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