Systematic Mechanical Troubleshooting - Stairmaster Stratus Systems Owner's Manual

SYSTEMATIC MECHANICAL TROUBLESHOOTING

These steps should be performed in exactly the order written. Refer to the "Parts
Removal and Replacement" section of this manual for any disassembly and
assembly instructions.
1. Remove the neck covers (3300 CE only) and the side covers.
2. Adjust the Poly-V belt so that the compressed distance of the valve
spring is 1-11/16" (4.3 cm) (see Figure 22). Retest the machine if
Poly-V belt adjustment was necessary.
3. Verify the drive chain alignment and tension between the freewheel
of the intermediate shaft assembly and the pedal chainring (see
Figure 20).
4. Remove the drive chain and inspect the chain for frozen links. Replace
the chain if any frozen links are found and tension the chain according
to the "Drive Chain" section of this manual.
5. Verify that the jam nut and bearing retainers on the crank assembly
are tight.
6. Spin the crank assembly with the drive chain removed and listen for
any clicking or grinding noises. The crank should spin freely 4 or 5
revolutions. Resume troubleshooting at step 7 if no noises are heard.
7. Verify that the jam nut on the flywheel and the alternator/flywheel
assembly brackets are tight.
8. Adjust the inductive switch to 1/32" from the speed sensor disk.
9. Loosen the nyloc nut of the J-bolt assembly (see Figure 22) and the
nut and bolt that mount the alternator/flywheel brackets to the frame
(see Figure 24). Now pivot the alternator/flywheel assembly down so
the Poly-V belt is slack without allowing the flywheel to touch the
Poly-V pulley.
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