I've had the Warrior covered up all summer, waiting for the heat and humidity to subside. Finally, the days are getting bearable again, so, with the end in sight, I yanked off the cover today and fired up the motor for a test drive. Started just fine and drove nice and smooth, just like I'd hoped. Heading back home, I cranked the cab AC up for the heck of it and was startled by a loud, continuous moan from the blower. Seems to "work" fine, but it definitely never sounded like this before.
Any idea what might be going on? Where should I start looking?