I'm not familiar with this model. If you could e-mail me a picture of the lever your pushing it may help.
Anyway, There are electronic inclines that use an electric motor.
Crank inclines that I've seen have a cable or a gear system and some old treadmills with a lever and bolts and bars to manipulate the incline. Either way take of the hood and look. Maybe you can see the problem.
If you could e-mail me the inside hood area also
I could tell you more
markepeterson@austin.rr.com
Mark Peterson
April 2008
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Try fixfault.com to fix gym/fitness equipment.