Have a john deere sabre turn key won't start thought battery was dead charged battery still won't start jump start with car battery it will start then . try to engage reverse with blades running it shuts off. shut down tractor won't start again .I,m thinking wiring not grounded but where or replacement switch somewhere.give best advise.

I'm having the same problem (minus the reverse issue)... cut-off on me when I got off to move something-even though blades were disengaged & parking brake was on?- hasn't started since. I even bought a new battery...nothing. I thought maybe it was the seat switch; did the override & still nothing. I've hit the starter with a hammer while cranking>>> still nothing. What else can I try???? I'm having the same problem (minus the reverse issue)... cut-off on me when I got off to move something-even though blades were disengaged & parking brake was on?- hasn't started since. I even bought a new battery...nothing. I thought maybe it was the seat switch; did the override & still nothing. I've hit the starter with a hammer while cranking>>> still nothing. What else can I try????

Well, this one requires a little bit of troubleshooting. I say we split your electical system, mentally. Do you have access to an electrical multimeter, and know how to use it. If you can get one but do not know how to use it, I can direct you. A cheap digital multimeter at sears is not very expensive, and a good tool to be familiar with and have at available. You can click on my ID in blue and ask a question direct in its own conversation. I think that will get me and we can step through this problem in a dedicated conversation. For example if the person that posted the original problem on this thread starts writing then we could have confusion. I look forward to helping you step through your problem. Well, this one requires a little bit of troubleshooting. I say we split your electical system, mentally. Do you have access to an electrical multimeter, and know how to use it. If you can get one but do not know how to use it, I can direct you. A cheap digital multimeter at sears is not very expensive, and a good tool to be familiar with and have at available. You can click on my ID in blue and ask a question direct in its own conversation. I think that will get me and we can step through this problem in a dedicated conversation. For example if the person that posted the original problem on this thread starts writing then we could have confusion. I look forward to helping you step through your problem.