Stairmaster 4200 PT Fitness Equipment User Manual


 
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4. Check to ensure that the spring pulley turns freely and is not worn
excessively. Refer to the Spring Pulley section if you have to replace
the pulley.
5. To reinstall the spring, connect it to the end of the step chain using
the master link.
6. Route the spring under the spring pulley that is fastened to the spring
pulley shaft (see Figure 11).
7. Hook the end of the pedal arm return spring onto the spring hanger.
8. Reinstall the covers.
STEP CHAIN
1. Remove the bottom cover.
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 (PN 21298SV) and bearing
sleeve assembly from the step chain connection point on the pedal
arm.
5. Remove the master link from the spring-chain connection.
6. Reverse the procedures to reinstall the step chain. Lubricate the step
chain before reinstalling the covers.
PARTS REMOVAL AND REPLACEMENT
!
WARNING
DO NOT TWIST THE SPRING DURING INSTALLATION. IT WILL WEAR
EXCESSIVELY AND REDUCE THE LIFE OF THE SPRING.