To start with check your AC coming out of the stator at the regulator. Then for DC directly out of the regulator. Unsure how your Gravely may be fused from there. There are more specific tests in the manual. Below is a link for Kohler where you can view both manuals and parts for free. "Enter as guest"

Here is a link that might be useful: Kohler manuals

electric PTOs and charging systems don't like being hooked up backwards. other than that the tractor don't even care.

if you ar elucky it got a fuse, if unlucky it got both the regulator and the stator.

Only one fuse in the system and it ohms out good. Gonna take some voltage readings when it quits raining. Couldn't find much on the Kohler web site about the regulator/rectifier.

"electric PTOs - don't like being hooked up backwards"

?? I don't think they care either, there is just a simple coil.

Walt Conner

if they have an antichattering diode, it blows. it is across teh +/- backwards to begin with. once you hook it up backwards current will flow and blow it. doesn't really hurt the pto itself, should have clarified.