Quote:
Originally Posted by dbuck
For MAX cooling effect it should be run at full throttle.
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It only needs max cooling under load. If not under load, WOT not needed. When mowing you need it WOT for blade tip speed. Any other uses.... throttle as needed. Saying you have to run an air cooled engine fast for cooling is like saying that you need to run your car at high rpm. It runs the fan faster that way right? Moves more air at higher RPM doesn't it? You do not need to run them WOT all the time. I use the throttle on my cubs just as I would on any tractor. As necessary.