I've got a Grasshopper 614 that I went and picked up at the customers house yesterday and brought it to the shop for a bad solenoid and to straighten up some hacked up wiring. To get it on the trailer, I jumped it by bypassing the solenoid and drove it on the trailer and it did great. Rather than unloading it, I just backed the trailer in the shop and did the repairs there. Once fixed, I started it and it ran just fine, but I didn't drive it. Last night I pulled it out of the shop and it sat outside in the rain, but I wasn't too concerned, as it has lived it's whole life outside. Well today, I back it in to the shop again, out of the rain, to bolt the fender back on before returning it. I fired it up, and it ran for two seconds and bogged down and died like the motor seized. After some troubleshooting, I found the right side pump to be almost seized up. With the belt off, I can turn it with a wrench on the bolt, but it is very tight. the left pump spins by hand as it should. My two questions here are, what would cause this out of the blue, and is this pump trash as I suspect?
Thanks.
RMR