Stairmaster 4200 PT, 4600 PT/CL Spring Pulley, Drive Chain, Parts Removal And Replacement, Page

PARTS REMOVAL AND REPLACEMENT

SPRING PULLEY

1.Remove the bottom cover.

2.Unhook the pedal arm return spring from the spring hanger.

3.Remove the snap ring from the pulley shaft (see Figure 11).

!WARNING

TO REDUCE THE RISK OF EYE INJURY, WEAR EYE

PROTECTION WHEN REMOVING SNAP RINGS.

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 multi-purpose 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. Do not twist the spring.

!WARNING

DO NOT TWIST THE SPRING DURING INSTALLATION. IT WILL WEAR

EXCESSIVELY AND REDUCE THE LIFE OF THE SPRING.

9.Reinstall the covers.

DRIVE CHAIN

1.Remove the bottom cover.

Page 61