When the treadmill stops running, it is frustrating because it spoils the good feeling of exercise. When the treadmill stops after starting a workout, there is something wrong with the belt, platform, motor, or speed controls.
If there is too much resistance during running or walking, the treadmill will stop to prevent damage to the motor. This is a safety measure to protect the engine and prevent excessive heat that could eventually cause a fire. A treadmill owner can check the treadmill with a few simple steps and identify problems that cause the treadmill to stop.
Step 1
Watch the belt for fraying. As the belt wears, the frayed area creates more friction and resistance. This increases the heat and power demands on the engine. The treadmill detects a problem and turns off the power. If the belt is loose, use an Allen wrench to tighten the tension by adjusting the screws on the back of the treadmill. Turn the screws 1/4 inch clockwise and tighten the belt.
Step 2
You feel the area in the center of the platform below the belt. This area should feel neat. If the treadmill platform and belt are not lubricated, the friction causes too much resistance and the motor will shut down. Lubricating oils can be purchased online or at your local treadmill repair shop.
Step 3
Check that the power cord is firmly plugged into the wall outlet. Some treadmill performance issues can be as simple as a loose cable. Check that the cable is plugged into the wall outlet.
Step 4
Check the speed controls. The best way to check your speed is to start the treadmill at a slow pace. Let the treadmill run for a few minutes and jump on the belt to start walking. Change the speed of the treadmill. If the engine stalls, it could be the speed control.