Maintenance and Troubleshooting1108.2.2. Treadbelt Tracking AdjustmentNote: On the L7 model you should see an equal gap on eitherside of the treadbelt. On L8 and L9 models, a yellowwarning label is visible on the deck from the rear of thetreadmill when the treadbelt is not tracked correctly.The treadbelt is tracked by means of the two 9/16” hex headbolts at the rear of the treadmill. Tightening (clockwise) the bolton the side of the treadmill that the belt has moved towards andloosening the bolt on the opposite side an equal amount, willcause the belt to move toward the center. Adjustments shouldbe made in ¼-turn increments, with the treadmill running at2 to 3 mph. Allow at least 30 seconds for the belt to stabilizebetween each adjustment. To ensure proper belt tracking andalignment, the treadmill must be placed on a stable and levelsurface.8.2.3. Treadbelt TensioningThe treadbelt is tensioned at the factory but may requireadjustment after installation. Need for tensioning is indicated byuneven belt speed and may be felt as sudden stopping of thetreadbelt when your foot comes down on the belt.To check belt tension: run treadmill at 1 mph, then walk on it. Ifthe belt does not feel like it is slipping or hesitating, then thebelt is tensioned correctly. If the belt slips/hesitates, then it isnot fully tensioned.The same hex head bolts used for tracking also tension thetreadbelt. To tighten the treadbelt, turn both bolts clockwiseexactly the same amount, ¼-turn at a time. Failure to turn themequally will affect belt tracking. DO NOT OVER-TIGHTEN.Continue checking for treadbelt slipping. When treadbelt is fullytensioned, speed up treadmill to 5 mph. Then, while jogginglightly, check for any sudden slipping/hesitating of the treadbelt.Repeat treadbelt tensioning if required.