Stairmaster Stratus Systems, Owner'S Manual

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Page 46
PARTS REMOVAL AND REPLACEMENT
5. Check the tension in the drive chain for a total of 1" (2 cm) of
deflection at the midpoint of the lower chain section (see Figure 20).
6. To adjust the chain tension, loosen the nuts at the top and the bottom
of the intermediate shaft bracket. Pivot the brackets as needed to get
the proper chain tension. Tighten the nuts and recheck the chain
tension. Readjust the chain if necessary.
7. Reinstall the covers.
INTERMEDIATE SHAFT ASSEMBLY
1. Remove both neck covers (3300 CE only) and the side covers.
2. Remove the drive chain.
3. Loosen, but do not remove, the nuts at the top and bottom of the
intermediate shaft bracket (see Figure 21).
4. Loosen the J-bolt nut so the Poly-V belt is slack.
5. Support the alternator/flywheel assembly and remove the two
screws from the threaded spacer. Carefully lower the flywheel onto
the Poly-V pulley.
6. Support the intermediate shaft bracket and remove the nut and bolt
from the top of the intermediate shaft bracket. Lean the intermediate
shaft bracket out of the way.
7. Loosen and remove the nut from the left side of the intermediate
shaft. Pull the intermediate shaft out of the intermediate shaft
bracket.
8. Remove the Poly-V pulley and Poly-V belt from the intermediate shaft
bracket.
9. Inspect the intermediate shaft bearings (they are inside the Poly-V
pulley) for smoothness of operation. Replace the bearings if
necessary.