NordicTrack A.C.T. NTEL71615 User Manual page 33

HOW TO ADJUST THE DRIVE BELT
If the pedals slip while you are pedaling, even while
the resistance is adjusted to the highest level, the drive
belt may need to be adjusted. Before you adjust the
drive belt, unplug the power adapter.
Remove the indicated M4 x 12mm Screw (139) and the
Access Cover (136).
136
97
79
57
139
Next, loosen the Pivot Screw (97), tighten the Belt
Adjustment Screw (79) until the Drive Belt (57) is tight,
and then retighten the Pivot Screw.
When the Drive Belt (57) is tight, reattach the Access
Cover (136). Then, plug in the power adapter.
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