Horizon Fitness 3.3T Treadmill Horizon Fitness Updated September 29, 2021 19:50 For the 2007 Horizon Fitness 3.3T Owner's Guide, please click here. For the 2007 Horizon Fitness 3.3T 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 How to Fix a Treadmill that is Stopping and Starting T303-03 Treadmill Operating Instructions Comments 0 comments Please sign in to leave a comment.