Stairmaster 4000 PT series, Owner'S Manual

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Page 32
Lubrication
There are nine components that need periodic lubrication: the drive chain, the
step chains, the pedal arm return springs, the step chain connection points,
the pedal arm bushings, the leveling arm bushings, the spring pulley shafts,
the pedal shafts and the leveling arm pins. Remove the bottom cover to get to
the components.
1. Place a protective mat on the floor while you lubricate your machine.
A rubber floor mat is available from StairMaster
® Health & Fitness
Products, Inc.
2. Lubricate the drive chain and the step chains weekly. Try to penetrate
the entire length of the chains with 30W motor oil.
3. Remove the drive chain and step chains every three months to
thoroughly clean and lubricate them. Use a mild degreaser and a
stiff brush to remove dirt and corrosion from the chains.
4. Unhook the pedal arm return springs from the spring hanger every
week. To protect them from corrosion, wipe the entire length of each
pedal arm return spring with a cloth dampened with 30W motor oil
before reconnecting it. Replace the spring if it is rusty or otherwise
damaged.
5. Remove the double pitch master link from the step chain connection
points every three months. Clean the master link and the bushing in
the pedal arm. Lubricate the master link and bushing with a thin coat
of multi-purpose grease before reassembling.
6. Remove the pedal arms and leveling arms every three months. Clean
the pedal arm and leveling arm shafts and bushings with a clean
cloth. Protect the shafts from corrosion by wiping them with a cloth
dampened with 30W motor oil.
MAINTENANCE INSTRUCTIONS