I have an older white gt-1855 garden tractor and we used to have to replace the battery every 2 years. My parents had it and got a zero turn so I went and took the 1855 as it has sentimental value as I grew up with it and put a new battery in it and have always kept a battery tender on it and got 5 years out it so far. I put a tender on everything now, ATV, Motorcycle, etc. I think that plays into them lasting longer!
My 1025r does the same thing. Turn it and it clicks. Dash Lights flash. It does that until I find the right angle to push on the key while I turn it. It was just at the dealer for a broken PTO brake and I had them check that out. They said I had the key upside down! (Obviously wrong) I went to start it to load it in the rain at the dealer and it did the same thing. I needed it desperately that day so I jiggled it around until it started. Has to be something in the ignition switch.Just "fixed" an identical problem an hour ago - but it was on my X300. I went through the same drill - cleaned terminals, used a jumper pack, checked safety switches, etc. I couldn't find a new battery to buy on Sat. here - and the voltages read that it was good - so I kept tinkering - because I needed to mow.
Then it cranked and started on about the 25th try. The only thing I did differently was I think I may have put some sideway pressure on the key when I turned it. I'm not positive, but I think that was the problem - as now it starts every time if I just push the key in a certain direction when I turn it.
It's too early to tell if that is the "real" fix. But since I just found this out just minutes before dark, and after working on it all afternoon, I was ready to give up with no new ideas. So, I thought I would share it.