How to Fix Problems with a Bowflex Treadclimber 5300

The Bowflex TreadClimber 5300 is a combination stair climber, treadmill and elliptical. Like any machine it is prone to breakdowns and mechanical failures. Many of these problems are easy to troubleshoot, and you can make your own repairs with simple hand tools. Learning how to troubleshoot your own machine can save you thousands of dollars on a replacement, or days of lost exercise time and the expense of sending it out to be repaired.

Check power source, including the outlet, to see if the Bowflex TreadClimber 5300 will turn on. Make sure the cord is plugged into the wall. Insert the safety key. The unit will not work without the key in place. Replace the safety key magnet with any standard magnet if the key is in place but not functioning. Look for damage to the I/O cables. Use an electrometer to check for power in the cables if there is no visible damage such as kinks, breaks or fraying. If everything is functioning, but the control panel is still not starting up, replace the upper console control board.

Recalibrate the machine if speed is not registering, belts stop turning or the display readout shows an “err, LS, OS” on the face. Calibrate the Bowflex TreadClimber 5300 by plugging it in. Stand on the foot platforms, or floor mat. Do not stand on the walking belt. Insert the safety key. Press the “start” key when “CAL/PRSS/STRT” shows on the readout. If readout fails to show the “CAL/PRSS/STRT” symbol, turn off machine and turn it back on. Press “ENTER” and then “DOWN SPEED” at the same time until “CAL/PRSS/STRT” shows up on the display. Belts will start and stop during the calibration; do not be alarmed. Do not make any adjustments or interrupt the display of numbers as the unit goes through the calibrations. When the machine is finished calibrating, the readout will display “CAL…PASS” and you can press the "POWER" key to get out of the calibration section.

Turn off radios, microwaves or other computers within a 6-foot radius of the Bowflex TreadClimber 5300 if the heart rate is not showing up when you are wearing the chest strap. Other electronics can jam the transmission of the monitor. Replace the wire and heart rate receiver if the receiver is not working when all electrical appliances are turned off.

Adjust walking belts at the front of the treadles if they are out of alignment.

Unplug the Bowflex TreadClimber 5300 and wait five minutes if the machine is squeaking or knocking during operation. Push each treadle down individually and tighten all bolts on the walking treadles. Tighten the bolts on the linkage system in the middle of the treadles with an Allen wrench. Use a 1/2-inch wrench to tighten the drive shaft, and a 5/32-inch hex wrench to re-tighten the setscrew located on the motor flywheel. Replace rollers as necessary. Align and tighten treadles.


Always unplug the machine before tightening any belts or making adjustments to the alignment of treadles.