Adjust the guards when the gap between the roller and the guard exceeds 3/8 of an
Disconnect the treadmill power cord from the receptacle (outlet).
Loosen, but do not remove, the two screws attaching the rear roller guard to the deck
(hold nuts underside with your finger).
Slide the rear roller guard towards the rear until the gap between the two is
approximately 0.1 inch (the thickness of two quarters).
Tighten the two mounting screws on the rear roller guards.
Connect the power cord.
Figure 2-2. Treadmill calibration