Core Health & Fitness Stair-Climbing Fitness Machine 4400 PT

Remove the bottom cover to access components

If you have a 4600 PT/CL, remove the upper covers as well

Lubricate the drive chain with 30W motor oil

Lubricate the step chains with 30W motor oil

Pedal Arm Return Spring Maintenance

Unhook the pedal arm return springs from the spring hanger

Wipe each pedal arm return spring with a cloth dampened with 30W motor oil

Remove the step chain retainers

Pedal Arm Support and Chain Removal

Unhook the pedal arm return spring from the spring hanger

Lift the step chain up and off the clutch sprocket

Lower the pedal arm to the floor

Use the fastener removal tool to remove each of the four fastener pins on the mid cover

Stand on the pedals and keep them on the floor

Slide the mid cover down and away from the machine

Remove the cover from the frame tube

Carefully let both pedals return to the upper stops

Remove the eccentric shaft assembly

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

Remove the set screw from the transmission sprocket (see Figure 21)

Remove the sprocket and key from the shaft

Remove the step chain retainers

Support the pedal arm and 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. Repeat on the other side.

Remove the snap ring from the left end of the drive shaft

Wear eye protection when removing snap rings

Remove the sprocket and the other small parts from the left side of the hub assembly

Slide the drive shaft to the right, out of the hub assembly

Loosen and remove the two remaining bolts and nuts that hold the hub assembly to the frame. Remove the hub assembly.