Dalverian
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- Joined
- Sep 3, 2020
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I have a troy bilt horse xp with a kohler courage engine in it and a hydrostatic transmission. The other day I was mowing and suddenly there was a loud high pitched buzzing noise (imagine metallic card in bicycle spokes), then a loud pop and the engine revved extremely high, so I shut it off. Now it will run, but always revs high and throttle will not control how high it idles, but all linkages are intact (that i can see). Engaging the blades puts enough strain on the engine to pull the rpms down enough to make me comfortable mowing with it, but disengaging the blades makes it sound like it is winding up and getting ready to explode. Any ideas what is going on here?