Proform 950 Adjustable Knob

SOURCE: proform vr900 recumbent tension not working

Here is a link to the owners manual. If this is correct the fix should be relatively easy


http://www.iconservice.com/pdf/PFCCEX01010.pdf

Gerritt
Serving the Twin Cities

SOURCE: I lost my owners manual for my Proform 585 treadmill

Iconfitness.com

SOURCE: Proform Crosswalk Advanced 525X

One possibility is the pulley in the front roller.The shaft that goes into the roller slips making the belt seem as if its slipping. To check it it requires tmarking both surfaces with paint and then see if the mark seperates.

SOURCE: Proform 740CS runs okay but the incline does not

ProForm Treadmills have a reset procedure for the incline function. With the key inserted in the console, activate the incline; while the incline is changing, remove the key. Wait 30 seconds, then replace the key. The incline should to maximum, then to minimum, resetting its limits. It worked for mine just 10 minutes ago; the procedure is in the manual if you have it. Good luck!

SOURCE: Have purchased a used Pro Form 900 Cardio Cross Trainer

If you can hear the adjustment motor running the problem could be related to two things:
1. Broken or stretched resistance adjustment cable.
2. Broken bracket for the magnet return spring.
If the resistance is on maximum all the time the second issue is most likely the cause.