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Lifestyler
Treadmill

Model # 831297031 Official Lifestyler 8-mph treadmill

Here are the diagrams and repair parts for Official Lifestyler 831297031 8-mph 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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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 111 parts  |
Black & Decker Treadmill Power Cord (replaces 031033, 031143, 031147, 247991) 031229
#35

Lifestyler 8.0mph treadmill diagram

Black & decker treadmill power cord (replaces 031033, 031143, 031147, 247991)

Part #031229

$11.39 | 
15% OFF Phone Price : $13.39
In Stock
Image Treadmill Safety Key Assembly 106337
#6

Lifestyler 8.0mph treadmill diagram

Image treadmill safety key assembly

Part #106337

This item is not returnable
$6.59 | 
13% OFF Phone Price : $7.59
Back Order
Black & Decker Exercise Equipment Screw 105444
#71

Lifestyler 8.0mph treadmill diagram

Black & decker exercise equipment screw

Part #105444

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Optic Sensor 102955
#60

Lifestyler 8.0mph treadmill diagram

Weider exercise equipment optic sensor

Part #102955

This item is not returnable
$9.29 | 
10% OFF Phone Price : $10.29
In Stock
Pin,x-tree,p 104623
#39

Lifestyler 8.0mph treadmill diagram

Pin,x-tree,p

Part #104623

This item is not returnable
$2.16
In Stock
Nordictrack Carriage Bolt 013445
#22

Lifestyler 8.0mph treadmill diagram

Nordictrack carriage bolt

Part #013445

This item is not returnable
$2.16
In Stock
Exercise Equipment Flat Washer 014156
#30

Lifestyler 8.0mph treadmill diagram

Exercise equipment flat washer

Part #014156

This item is not returnable
$2.16
In Stock
Om,29701/297 107120

#NI

All parts diagram

Om,29701/297

Part #107120

This item is not returnable
$2.16
In Stock
Wire,14awg,1 103823

#NI

All parts diagram

Wire,14awg,1

Part #103823

This item is not returnable
$2.49
In Stock
Screw 102959
#59

Lifestyler 8.0mph treadmill diagram

Screw

Part #102959

This item is not returnable
$2.16
In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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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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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 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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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…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking belt

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…

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Repair difficulty
Time required
 45 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

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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