How to Replace Front Rollers on a Treadmill Horizon Fitness Updated August 26, 2021 17:18 The PDF attached will outline the steps needed to replace the front rollers on your Horizon Treadmill: For assistance, please call 888.878.9011 or email firstname.lastname@example.org. To order replacement parts, visit parts.horizonfitness.com or email email@example.com. Replacing Front Roller on Treadmill.pdf30 KB Was this article helpful? Yes No 0 out of 0 found this helpful Have more questions? Submit a request Related articles How to Replace the RPM Sensor on an Elliptical Comments 0 comments Article is closed for comments.