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CAUTION: In order to prolong the lifespan of the treadmill, we suggest switching off the treadmill for
about 10 minutes after 2 hours exercising. If the running belt is too loose or tight, it will damage the
treadmill. So keeping a suitable tightness is very important. We suggest you grasp the running belt
and pull it up to a certain distance until you cannot pull it up anymore. If the distance is between 50 -
75 mm, the tightness of the running belt is suitable.