Horizon Fitness WT751 Treadmill Horizon Fitness Updated September 16, 2021 21:00 For the 2007 Horizon Fitness WT751 Owner's Guide, please click here. For the 2007 Horizon Fitness WT751 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 WT951 Treadmill How to Fix a Safety Key Off Message on a Treadmill Treadmill Master Reset Horizon Fitness T605 Treadmill How Do I Replace a Lost or Damaged Safety Key? Comments 0 comments Please sign in to leave a comment.