Horizon Fitness CST3.6 Treadmill Horizon Fitness Updated September 21, 2021 22:57 For the 2007 Horizon Fitness CST3.6 Owner's Guide, please click here. For the 2007 Horizon Fitness CST3.6 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 Horizon Fitness CST3.5X Treadmill Horizon Fitness CST3.5 Treadmill Horizon Fitness T30 Treadmill Treadmill Routine Maintenance Schedule Comments 0 comments Please sign in to leave a comment.