Couldn't find any info about this model other than it probably having a hydro setup like a 757 or 957 series hydro. I'd call JD dealer and ask them where the hydro disconnect is, so you can move safely WITHOUT any damage. Also is it a single lever/push button or do you need to activate both sides to disengage system.
Also, ask them when you get motor started again, if the disconnect is automatically re-engaged, or does it need to be manually engaged to get drive to wheels again.
When you find out, get back and let us know, so if someone gets one of these series mowers and have problems, others can relay a "how to" to them.