Tip & How-To about Stairmaster 4000PT Stepper

Drive Chain Replacement on Stairmaster 4000PT Stepper

Replacing the Drive Chain on Stairmaster 4000PT

    1. Remove the bottom cover.
  • Remove the master link from the drive chain.
  • Remove the drive chain from the sprockets.
  • Reinstall the drive chain, ensuring the master link is properly installed.
  • Check the drive chain tension. There should be a total of 1" to 1-1/2" (2.5 to 4.0 cm) of play, up and down, at the slackest point in the chain. If the drive chain tension needs adjustment, refer to the "Drive Hub Assembly" section.
    WARNING: If the drive chain is too tight, the drive train will wear excessively, shortening the life of the drive hub assembly. If the chain is too loose, the machine will be noisy and will operate at less than peak efficiency.
  • Lubricate the chain with 30W motor oil and wipe off the excess.
  • Reinstall the covers.

http://www.sportsmith.net/faq.aspx?did=8C1A2D6B-027C-4681-BBD3-6099804CB674

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1 Answer

Stairmaster 4400pt seems to have a slipping chain.


Replacement Parts for Fitness Exercise Equipment at SPORTSMITH

You can take the covers off and see if it is indeed the chain that is slipping, but in most cases, the drive sprocket is actually what is failing. The following link will take you the item that should rectify your issue.

Drive Hub for Stairmaster Steppers 4000PT 4400CL 4600CL 4400PT 4600PT...

Nov 04, 2010 | Stairmaster 4400 PT Stair Stepper

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