Do you have a reservoir to add oil? This can be a sign of low oil or internal damage.

Good luck on Hydrogear. Below on these threads is a topic about a 3 year old Cub Cadet Commercial for which parts are no longer available. 3 year old, $5,000 dollar mower and no simple parts available?

http://forums2.gardenweb.com/forums/load/tractor/msg0920111129143.html?2

I wonder if it's overheating due to the parking brake mechanism dragging. I had one do that. It would work great for a while and then it would not move. It would not roll with the bypass lever engaged just like you described. This transmission had a simple parking brake with an adjustable bolt on the side. I loosened that and the transmission never did that again.

baymee, I read the thread. Didn't sound good. Hope I have better luck. Thanks. Will check for oil reservoir.

rdaystrom, thanks, I will check that tomorrow.

Sorry. I got hung up(sick) and couldn't get back to the lawn mower.

Rdaystrom, I believe you had the right idea. I work nights, but took time this morning to pull wheel off so I could see and work on it. Found the nut with the cartakey that holds the little disc brakes. While tapping the key out with a vice grip and crecent wrench, I bumped the nut and I felt something give. Everything felt looser. I rocked the mower back and forward. Seemed to move some. I adjusted the nut out about a half round and put key in and put wheel on. The mower runs fine now. I will advise later in I have any more problem.

Baymee, couldn't see the oil reservoir but saw no sign of leakage. Thanks anyway.

rdaystrom saves the day again!

Whatever metal.

WOW! That just blows me away! So simple!

That is just so cool!