Stairmaster 4600 PT/CL, 4200 PT, 4400 PT/CL Eccentric HUB Assembly, First Reduction Shaft Assembly

PARTS REMOVAL AND REPLACEMENT

ECCENTRIC HUB ASSEMBLY

1.Remove the bottom cover.

2.Remove the Poly-V and HTD belts.

3.Loosen and remove the four nyloc nuts and bolts from the hub. Remove the assembly from the frame.

4.Reassemble in the reverse order. Ensure the belts are properly tensioned; refer to the "Poly-V and HTD belt" section.

FIRST REDUCTION SHAFT ASSEMBLY

1.Remove the bottom cover.

2.Remove the drive chain.

3.Remove the eccentric shaft assembly.

4.Remove the set screw from the transmission sprocket (see Figure 21). Remove the sprocket and key from the shaft.

5.Hold onto the HTD sprocket and pull the shaft out of the hub.

6.Reassemble in the reverse order. Ensure the belts are properly tensioned; refer to the "Poly-V and HTD belt" section.

HANDLEBAR (4400 PT/CL ,4200 PT)

1.Remove the console and separate the left and right top cover.

2.Cut the Ty-wraps that secure the main cable to the handlebar tube.

3.Remove the four screws and flat washers that hold the handlebar tube in the frame tube.

4.Lift the handlebar out of the frame. Reverse the steps to reinstall the handlebars.

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