Late D idle speed

Richard in Bee · Apr 26, 2017

What do you consider the practical idle speed on a model D? I say "practical" because you can find videos of two cylinders running at 150 RPM, but my guess is a tractor tuned to run that slow isn't practical for field work. None of my D stuff gives an idle RPM.

WeirdDeere · Apr 26, 2017

I can't remember if I saw it in a manual or if it was one of the times I threw a hand tach on my 38 DI, but 400 or 450RPM seems right. If I get motivated and start it today I'll see where it idles and report back

Brandon

Richard in Bee · Apr 26, 2017

Thanks Weird

WeirdDeere · Apr 26, 2017

The operator's manual for my DI (DIR 225) says "with lever nearly back against stop, engine should idle at 350-400 RPM"

Brandon

WeirdDeere · Apr 26, 2017

I just measured mine at 450 RPM. Maybe I could tweek it slower, but this seems like a comfortable idle speed to me. This is with cast iron low compression pistons, and on gas. It would idle there on kero as well.

Brandon

Late D idle speed

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