True Fitness 600R - Manual (Page 72)

Removal & Replacement 500U
Remove Belt & Tensioner Assembly (continued)
Step 3.
Use 17 mm box wrench to loosen
Nut from belt tensioning screw.
Step 4.
Use 5 mm hex wrench to loosen
Rear hub bracket screws.
Copyright 2001 True Fitness Technology, Inc Page 70
Step 3. Prevent Wheel Rotation
Step 4. Loosen setscrew