LifeSpan BOLT M2 Owner's Manual page 6

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Do not use excessive pressure on console control keys. They are precision set to function properly
with little finger pressure.
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Replace any defective components immediately. The machine must be kept out of use until repaired.
Belt wear-in period: all treadmills make a certain type of thumping noise due to the belt riding over
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the rollers, especially new treadmills. This noise will diminish over time, although may not
completely go away. The belt will stretch over time, causing it to ride smoother over the rollers.
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