Tip - How to Adjust Pro-Form Treadmill Belts | eHow

Pro-Form treadmill belts need to be centered and tightened correctly in order to work properly. An off-center treadmill belt may become damaged during use. If the belt is too tight, the treadmill will slow down and run inefficiently; too loose, and the treadmill belt will slip, causing a safety issue. Before using your Pro-Form treadmill, ensure...