Belt Tension Adjustment-It is very important for joggers and runners in order to provide a smooth, 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:

Note: Adjustment is thru the small hold on the end caps. Tighten the rear roller only enough to prevent slippage at the front roller. Turn both the right and left bolt clockwise reasonably and inspect for proper tension. When an adjustment is made to the belt tension, you must also make a tracking adjustment to compensate for the change in belt tension.
DO NOT OVERTIGHTEN - Over tightening will cause belt damage and premature bearing failure.
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