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So my LT40 runs well, once it's going. What does "once it's going" mean?However, running the hydraulics, or anything that draws high current like raising the sawhead, makes the engine bog down when its at idle. I put a volt meter on the alternator while I ran the loader, and I saw it drop from 14.4V with no load to 12.4V with the load. I have the Kohler 28HP gas. Should the engine bog like that? Should the voltage drop? And most annoyingly, what's with this *DanG squeak?! It only squeaks when the engine bogs down like this, doesn't squeak under no low or at high rpms. The previous owner but a new alternator belt on before selling it.The alternator is the primary source of electrical energy when the engine is running. At idle that engine is producing MUCH lower HP than at max RPMs. These conditions exert extreme stress on the belt when operating the hydraulics. IF the new belt was replaced because of such stress it most likely is stretched and/or glazed. I made provision to rev-up the engine to a 'fast idle' on my LT40 any time I am operating the hydraulics. Here's a video of it bogging: IMG_8019.MOV - Google DriveAnother oddity: when returning to idle from running the saw, the engine RPMs go real low, borderline stall sometimes, then after 5-10sec it finds the normal idle. The only code it shows is the oxygen sensor is shorted, not sure if that would cause this.The "only code" you have is a very pertinent fault code. Shorted sensors can create many control module problems. My advise is to get any such faults repaired before operating the machine.
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