13Belt Adjustment and TensionWARNING! Do not overtighten rollers! This will cause premature roller bearing failure!Belt adjustment and tension performs two functions: adjustment for tension and centering. Yournew treadmill comes pre-adjusted from the factory for tension and centering. Please follow theprocedures below if the belt shifts left or right or if the belt slips while walking:WALKING BELT HAS SHIFTING TO THE LEFT (Diagram 1)First, unplug the power cord from the surge protector. Using the hex key provided, turn the leftrear roller adjustment bolt ¼ turn in the clockwise direction. Plug the power cord back into thesurge protector and run the treadmill at 2.5 mph. You should see the belt start to correct itself,moving back towards the center. Repeat the above procedure until the walking belt is centered.It may be necessary to set walking belt tension once you have completed this procedure if the beltfeels like it is slipping while walking. Refer to below to the “Walking Belt Slipping” instructions.WALKING BELT HAS SHIFTING TO THE RIGHT (Diagram2)First, unplug the power cord from the surge protector. Usingthe hex key provided, turn the right rear roller adjustment bolt¼ turn in the clockwise direction. Plug the power cord backinto the surge protector and run the treadmill at 2.5 mph. Youshould see the belt start to correct itself, moving back towardsthe center. Repeat the above procedure until the walking beltis centered. It may be necessary to set walking belt tensiononce you have completed this procedure if the belt feels like itis slipping while walking. Refer to below to the “Walking BeltSlipping” instructions.WALKING BELT IS SLIPPING DURING USE (Diagram 3)First, unplug the power cord from the surge protector. Usingthe hex key provided, turn both left and right rear rolleradjustment bolts the same distance, usually a ¼ turn in theclockwise direction. Plug the power cord back into the surgeprotector and run the treadmill at 2.5 mph. You should nowwalk on the belt to determine if the belt is still slipping. Repeatthe above procedure until the walking belt is not slipping. Thetension should be just tight enough not to slip.