True CS 1.0 Owner's Manual page 52

Treadbelt Adjustment
chapter eight: Care and Maintenance
Your treadmill's running belt has been properly aligned at the
factory. However, when the treadmill is used on an uneven surface,
please follow these instructions:
1 - Stand beside the treadmill, place the safety key onto
the control panel and follow operating instructions
for running the treadmill at 5 mph.
2 - If the belt is off-center to the right, turn the left
roller adjustment bolt counter clock-wise 1/4 turn.
If the belt is off-center to the left, turn the left roller
adjustment bolt 1/4 turn clockwise.
3 - Let the machine run for several minutes to check
the alignment. (Belt alignment does not need to
be perfect). If more correction is needed, turn the
adjustment bolt 1/4 turn and check again.
50
CS 1.0 Treadmill Owner's Guide
Treadbelt
Adjustment