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Treadmill

Model # 831247551 Official Proform treadmill

Here are the diagrams and repair parts for Official Proform 831247551 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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Showing 10 of 132 parts  |
Treadmill Walking Belt Lubricant (replaces 134591) 219168

#NI20

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Treadmill walking belt lubricant (replaces 134591)

Part #219168

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This item is not returnable
$3.99
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Treadmill Walking Belt Lubricant, 3-pack (replaces 202557, 219897) 219170

#NI21

All parts diagram

Treadmill walking belt lubricant, 3-pack (replaces 202557, 219897)

Part #219170

$23.69 | 
20% OFF Phone Price : $29.69
In Stock
Toyostove Exercise Equipment Magnet 113842

#50

All parts diagram

Toyostove exercise equipment magnet

Part #113842

This item is not returnable
$2.16
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Treadmill Drive Belt 254303

#62

All parts diagram

Treadmill drive belt

Part #254303

This item is not returnable
$17.49 | 
10% OFF Phone Price : $19.49
In Stock
Healthrider Front Wheel 139090

#84

All parts diagram

Healthrider front wheel

Part #139090

This item is not returnable
$2.99
In Stock
Black & Decker Exercise Equipment Screw 013438

#23

All parts diagram

Black & decker exercise equipment screw

Part #013438

This item is not returnable
$2.16
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Treadmill Star Washer 163045

#9

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Treadmill star washer

Part #163045

This item is not returnable
$2.16
In Stock
Toyostove Key Plate 203945

#106

All parts diagram

Toyostove key plate

Part #203945

This item is not returnable
$2.16
In Stock
Frame Spacer 251133

#48

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Frame spacer

Part #251133

This item is not returnable
$2.16
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Lifestyler Exercise Equipment Screw 013607

#15

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Lifestyler exercise equipment screw

Part #013607

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
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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…

Read more
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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