NordicTrack Commercial 3600 User Manual page 24

HOW TO ADJUST THE CUSHIONING SYSTEM
The treadmill features a cushioning system that re-
duces the impact as you walk or run on the treadmill.
To increase the firmness of the walking platform, step
off the treadmill and slide the platform cushions toward
the front of the treadmill. To decrease the firmness,
slide the platform cushions toward the back of the
treadmill. Note: Make sure that both platform cush-
ions are set at the same firmness level. The faster
you run on the treadmill, or the more you weigh,
the firmer the walking platform should be.
Platform
Cushion
Decrease
24
Increase
Platform
Cushion
Walking Platform