It could be the brake switch. :dunno:

 

Sounds to me like a brake switch problem.

 

Did you check the break switch also.

 

I have not tested the brake switch yet. There are 4 terminals on the switch. Any idea which terminals I should test? Would a bad brake switch also explain why the seat switch does not kill engine when I get off the seat?

 

yes a bad brake switch will cause every one of your symptoms. The machine "thinks" it is in park with the brake set so it will not allow the PTO to come on but will let it crank with no one on the seat.

I here is the switch/wire colors. if the switch is stuck "on" then A should read a short to C and B short to D.

 

You were absolutely right. My switch was shorted as you had indicated. To verify, I started the engine and then pulled off the connector to the brake switch (simulating taking my foot off the brake) and the PTO engaged as it should. Thank you very much for your help. Now to replace the switch. What a pain that they riveted the switch in.

Thanks again
Mark

 

Since that's a safety issue, even if it's out of warranty, you might be able to get JD to pay to repair it, especially because it's riveted in and it's not expected that a consumer would be able to replace it. Mention that you might need to contact the Consumer product Safety Commission about a possible recall because of the safety issue and I'm thinking that they might become real nice and offer to replace it at no charge as long as you don't get the "pesky" government involved.