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Richard SavageJul 29, 2025
Why is the walking belt slipping on my Pro-Form PERFORMANCE 800i Treadmill?
- AAaron DyerJul 29, 2025
To resolve this, first remove the key and unplug the power cord. Use the hex key to turn both idler roller screws clockwise, 1/4 of a turn. Ensure the walking belt is correctly tightened, allowing you to lift each edge 2 to 3 inches off the platform. Keep the belt centered. Then, plug in the power cord, insert the key, and test the treadmill for a few minutes, repeating until properly tightened.