Question about Stairmaster 4400CL Stepper

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My Stair Climber 4400cl is making a clunking sound on both steps. After removing the covers I found the sound coming from the drive belt with teeth. Should I replace the gears as well as the belt?

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  • alan_m_salga Jun 01, 2010

    thanks for the reply maxtreadmill. But my Stair Climber is neither a treadmill nor an elliptical machine. I found no parts for my equipment at the site you suggested. Instead, I found a large selection of parts for Stairmaster Stair Climbers at

    After removing the cogged belt, I found a couple of broken teeth. I cut them down a little and re-installed the belt so it spun in the opposite direction as a temporary fix while I wait for my new belts to arrive in the mail. The machine now works smoothly with the interim fix.



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I would inspect and change anything that is worn call Nation Gym parts @ 1-800-496-7278 or go to,then go to Parts click on to Stairmaster you will find kits to replace all movable parts for your unit.

Posted on May 29, 2010

  • John Mazmanian
    John Mazmanian Jun 01, 2010

    I appreciate your feed back even thought stepper repairs have dwindle down to a trickle in comparison to other cardio equipment, but National Gym Supply does have an array of Stair Master parts (individually or in kits) comparable to Sport Smith depending on parts availability, I have used both as a secondary sources. Also on geographical note NGS is closer to me and I get my parts the next day without extra charge. Good luck to you in your repairs





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1 Answer

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