How to Start a Proform 420 Treadmill
- 1). Plug the power cord into a three-pronged outlet.
- 2). Flip the "Reset/Off" switch located near the power cord on the treadmill base to the "Reset" position.
- 3). Stand on the rails next to the treadmill belt.
- 4). Locate the treadmill key. It will be attached to a clip by a string.
- 5). Attach the clip end to your waistband and plug the key into the slot below the treadmill display.
- 6). Choose your program once the display is fully lit.
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