Rear Drive Chain Assembly; Step Chains - Stairmaster FreeRunner 5400 ESS Owner's Manual

PARTS REMOVAL AND REPLACEMENT

Rear Drive Chain Assembly

1. Remove the side and base covers.
2. Rotate the drive chain turnbuckle to
3. Remove the rear drive chain master links from each leg sprocket.
4. Remove each pedal spring from the spring hanger and disconnect each step
chain from each drive chain adapter link.
5. Disconnect the master links from each end of the chain adapter links, and
pull the lower chain out from under the drive chain idler sprockets (see
Figure 23).
6. Install the new chain assembly, and adjust the drive chain turnbuckle so that
the chain does not slap the frame during a moderate paced workout.
Note: Do not over-tighten - over-tensioning the tumbuckle will cause
the machine to feel rough and cause premature wear of components.
7. Reassemble the machine,
assembly so that it is parallel with the floor (see Figure 29).
Note: There are two types ofmaster links. Do not interchange single
pitch master links with double pitch master links (see Figure 28).

Step Chains

1. Remove the side cover.
2. Reach between the alternator and the main frame (left side only) to pull up
on the spring and remove
3. Detach the spring from the step chain by removing the single pitch master
link.
4. Detach the step chain from the drive chain adapter link by removing the
single pitch master Iink.
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loosen the drive chain
and adjust the top edge of the heel link pivot
it from the spring hanger.
assembly.