The amount and type of maintenance you have to conduct on your treadmill depends on the age, condition, make and model of your machine. Some treadmills require you lubricate the running deck regularly, but other models have a maintenance-free deck that never needs lubricating. Most treadmills need routine cleanings, inspections and belt adjustments.
Inspection
Before each workout, check the nuts and bolts to make sure everything is tight. Tighten any loose screws or bolts. Do not tighten the rear roller adjustment bolts as these determine the tension of the running belt. Observe the running belt for signs of wear, including fraying around the edges. If your belt is not maintenance-free, feel under the belt to see if the running deck is dry and needs lubrication.
Cleaning
After each workout, wipe down the console, running belt, deck and rails with a damp cloth. Do not use any solvents or cleaning pads as these can damage your machine. If your treadmill is a fold-away machine, move it once every week or two and vacuum any dust or dirt that has accumulated under the treadmill. Some manufacturers recommend you remove the motor cover once a month and vacuum any dust or lint off the motor. However, you can void some manufacturer's warranties if you perform any unauthorized work under the motor cover. Check with your manufacturer before removing the motor hood.
Belt Lubrication
If the running belt on your treadmill requires lubrication, your owner's manual will usually provide a lubrication schedule. Depending on the brand and model, you may need to lubricate your treadmill every three, six or 12 months. The console on some models alerts you when it is time to lubricate the running belt. Most manufacturers recommend 100 percent silicone, but others require a silicone wax, so check first. Lift the running belt and spray or squirt the silicone up and down the running deck. Walk on the treadmill at a slow speed to evenly spread the lubricant.
Belt Tension
Over time, the running belt can become loose and feel as if it is slipping under your feet. Check the tension by lifting the middle of the belt on one side of the treadmill. You should be able to lift the belt 3 to 4 inches off the deck. If the belt is tight or loose, you can adjust it with the rear roller bolts on the back-end of the treadmill. Use an Allen wrench to turn the bolts, 1/4 turn at a time. After each adjustment, check the tension. Continue adjusting until you can lift the belt the recommended amount.
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