Horizon Fitness T81 Treadmill Horizon Fitness October 05, 2021 18:53 For the 2008 Horizon Fitness T81 Owner's Guide, please click here. For the 2008 Horizon Fitness T81 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 Where is the Serial Number Located? Horizon Fitness T82 Treadmill Comments 0 comments Please sign in to leave a comment.