Horizon Fitness RST5.6 Treadmill Horizon Fitness Updated September 16, 2021 22:19 For the 2007 Horizon Fitness RST5.6 Owner's Guide, please click here. For the 2007 Horizon Fitness RST5.6 Exploded Diagram, please click here. Was this article helpful? Yes No 0 out of 0 found this helpful Have more questions? Submit a request Related articles What are the Maximum User Weight for Treadmills? How to Replace the Running Belt and Deck on a Treadmill. Horizon Fitness CST4.6 Treadmill How Do I Reset the Lube Belt Message on a Treadmill? Horizon Fitness T6 Treadmill Comments 0 comments Please sign in to leave a comment.