Stairmaster 4000 PT series, Owner'S Manual

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Page 52
4. Slide the pulley and washer off the shaft.
5. Before reinstalling the pulley, clean the pulley shaft thoroughly with a
clean, dry cloth. Apply a thin coat of multipurpose grease to the pulley
shaft.
6. Slide the pulley and washer onto the shaft. Install the snap ring.
7. Route the spring under the spring pulley.
8. Hook the end of the spring over the spring hanger.
9. Reinstall the cover.
STEP CHAIN
1. Remove the side covers.
2. Remove the step chain retainers.
3. Support the pedal arm. Unhook the pedal arm return spring from the
spring hanger. Lift the step chain up and off the clutch sprocket and
lower the pedal arm to the floor.
4. Remove the double-pitch master link and bearing sleeve assembly
from the step chain connection point on the pedal arm (see Figure 9).
!
WARNING
DO NOT TWIST THE SPRING DURING INSTALLATION. IT WILL WEAR
EXCESSIVELY AND REDUCE THE LIFE OF THE SPRING.
TO REDUCE THE RISK OF EYE INJURY, WEAR EYE
PROTECTION WHEN REMOVING SNAP RINGS.
!
WARNING
PARTS REMOVAL AND REPLACEMENT