hifi engine

Akai 4000D Users and service manual required

Hi Guys,
I am about to start restoring my working Akai 4000D reel to reel.
It need an overhaul and i want to get it right first time. Does anyone have any of the above manuals to make life a little easier. I have a 4000DS, and have both manuals for this but is it the same?
Next will be my TEAC 3-XR. I have the service manual but no user manual. Again, this would be much appreciated.