I have the proform 765EKG treadmill. No matter what program you set it (pre-programed or manual) the machine slows down after 2 minutes.

It hasn't been used for a year or so due to my health problems

G.Smith, February 2008

make sure it's not in a program.
run the treadmill in the manual mode with no one running on it.
It should run with no speed changes.
If it does. Theres a good chance you have a worn belt and deck or one that needs lube.
You can email me from my video sight.
www.mindbites.com/person/214-Mark
markepeterson@austin.rr.com

Mark Peterson, February 2008