Learn how to replace a step chain retainer on your Stairmaster 4000PT stepper.
- Phillips or Flathead screwdriver
- Socket set
- Wrench set
- Remove side covers.
- Loosen and remove the two-step chain retainer bolts.
- These bolts are also the top two mounting bolts for the drive hub assembly.
- Reverse the removal procedures to reinstall.
- Make sure there is adequate clearance between the step chain and the retainer.