This new auger your planning on setting up, will it have a self mover on it and the reason I ask is because of the extra power used, a small amount of drag on the engine just to flow the oil but if a bin sweep is put on, that takes a fair bit more power. Mind you the engines you are talking about should be suitable, especially in the 35 horse + range. Also is this auger used for emptying grain bins and not filling them as a steep auger angle for filling bins certainly ups the amount of power required.
As to the EFI Kohler, this is dated information now as that would be five years ago when a local small engine shop sold one to a farmer that had the auger equipped with the electric clutch and after a few computers were fried ( at considerable cost ) on the engine, it was determined that feedback from the clutch magnetic circuit when it was turned off was causing a voltage spike that the computer could not handle. He installed a few diodes on the auger to prevent this feedback and if that still applies to that engine now, I don't know but thought I would give you a heads up on that.
I've only talked locally to one person that was using the Vanguard 35 horse on a 10" auger after having gone through a few Kohlers with less then thrilling results ( not sure what size Kohler ) and just seemed so pleased with the Vanguard engine, how it started in cold weather was one of his comments and just had not been having the problems with it.
