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Lifestyler
Treadmill

Model # 831297540 Official Lifestyler elite 780 treadmill

Here are the diagrams and repair parts for Official Lifestyler 831297540 elite 780 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 148 parts  |
Treadmill Safety Key (replaces 125589, 153017) 119038
#13

Unit parts diagram

Treadmill safety key (replaces 125589, 153017)

Part #119038

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This item is not returnable
$3.14
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24% OFF Phone Price : $4.14
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Treadmill Circuit Breaker, 15-amp (replaces 031103, 127202, 173322) 109382
#17

Unit parts diagram

Treadmill circuit breaker, 15-amp (replaces 031103, 127202, 173322)

Part #109382

This item is not returnable
$9.39
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10% OFF Phone Price : $10.39
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Black & Decker Clamp,flat T 116927
#79

Unit parts diagram

Black & decker clamp,flat t

Part #116927

This item is not returnable
$2.16
In Stock
Screw 102959
#62

Unit parts diagram

Screw

Part #102959

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Optic Sensor 102955
#63

Unit parts diagram

Weider exercise equipment optic sensor

Part #102955

This item is not returnable
$9.29
| 
10% OFF Phone Price : $10.29
In Stock
Black & Decker Clamp,8cabl 016057
#77

Unit parts diagram

Black & decker clamp,8cabl

Part #016057

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Screw 112609
#22

Unit parts diagram

Weider exercise equipment screw

Part #112609

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Screw 013028
#59

Unit parts diagram

Weider exercise equipment screw

Part #013028

This item is not returnable
$2.16
In Stock
Black & Decker Wire,jmpr,mt 107771

#NI

All parts diagram

Black & decker wire,jmpr,mt

Part #107771

This item is not returnable
$2.16
In Stock
Exercise Equipment Bolt 013547
#41

Unit parts diagram

Exercise equipment bolt

Part #013547

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 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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