NordicTrack A.C.T. Pro User Manual page 21

HOW TO ADJUST THE DRIVE BELT
If you can feel the pedals slip while you are pedaling,
even when the resistance is adjusted to the highest
level, the drive belt may need to be adjusted.
First, remove all of the screws from the right outer and
inner shields; there are two sizes of screws in the
right outer and inner shields—note which size of
screw you remove from each hole. Then, gently
remove the right outer shield.
Loosen the Idler Screw (102). Then, tighten the Belt
Adjustment Screw (103) until the Drive Belt (57) is
tight.
102
103
When the Drive Belt (57) is tight, tighten the Pivot
Screw (102).
Then, reattach the right outer and inner shields. Note:
If you have questions regarding which screw should
be in which hole, see EXPLODED DRAWING C on
page 27 and the PART LIST on page 23.
21
57