The speed sensor on an electronic treadmill is most likely located at the front roller near the motor assembly, where it counts each revolution to calculate speed and distance.
Why is my treadmill speeding up and slowing down?
The most likely cause for the motor to speed up and slow down is a dry or worn walking belt or walking board. Lift the walking belt and feel underneath for worn spots on the board. … This mode also allows the technician to calibrate the speed and incline of the treadmill whenever a major electrical component is replaced.
How do I know if my treadmill speed is accurate?
To determine the treadmill speed (distance / time), divide the distance (belt length x number of revolutions) by the time measured. For example, if the belt length was 3 meters, and it took 20 seconds for it to do 15 revolutions, then the speed is (3 x 15) / 20 = 2.25 meters/second (or 8.1 km/hr or 5 mph).