Belt tension adjustment is very important for joggers and runners. This helps to provide a smooth and steady running surface. Adjustment must be made from the right and left rear roller in order to adjust tension with the Hexagonal Wrench provided in the parts package. The adjustment bolt is located at the end of the rails as noted in diagram below:

DO NOT OVERTIGHTEN - Over tightening will cause belt damage and premature bearing failure.
Tracking Adjustments:
Treadmills are designed to keep the belt reasonably centered while in use. It is normal for some belts to drift near one side while the belt is running with no one on it. After a few minutes of use, the belt should have a tendency to centre itself. If during use, the belt continues to move toward one side, adjustments are necessary.
The procedures are as below:
▲ firstly, set speed to the lowest
▲ secondly, check which side the belt shifts to
If the belt shifts to right, tighten the right bolt and loosen the left bolt by using 6mm Hexagonal Wrench, until the belt is centered itself.
If the belt shifts to left, tighten the left bolt and loosen the right bolt by using 6mm Hexagonal Wrench, until the belt is centered. When adjusting the belt using the 6 mm Hexagonal Wrenches, it is important to adjust the belt in half turn increments. Over adjusting the belt can cause damage to the mat.
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