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Lifestyler
Treadmill

Model # J800 Official Lifestyler treadmill

Here are the diagrams and repair parts for Official Lifestyler J800 treadmill, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 104 parts  |
Pcb Assembly 904300

#105

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Pcb assembly

Part #904300

The manufacturer no longer makes this part, and there's no substitute part

Clip 903801

#38

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Clip

Part #903801

The manufacturer no longer makes this part, and there's no substitute part

Nylon Lock Nut 906902

#65

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Nylon lock nut

Part #906902

The manufacturer no longer makes this part, and there's no substitute part

Logo 905702

#40

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Logo

Part #905702

The manufacturer no longer makes this part, and there's no substitute part

Screw 906702
Screw

Part #906702

The manufacturer no longer makes this part, and there's no substitute part

Pan Assembly 907410

#112

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Pan assembly

Part #907410

The manufacturer no longer makes this part, and there's no substitute part

Tread L 903502

#4

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Tread l

Part #903502

The manufacturer no longer makes this part, and there's no substitute part

Wrist Monito PT-180

#NI

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Wrist monito

Part #PT-180

The manufacturer no longer makes this part, and there's no substitute part

Roller Assembly 901922

#23

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Roller assembly

Part #901922

The manufacturer no longer makes this part, and there's no substitute part

Flat Washer 907002

#86

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Flat washer

Part #907002

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

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Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

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Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

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Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

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Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

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Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

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Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your fitness & exercise

Use the advice and tips in these articles and videos to get the most out of your treadmill.

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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