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Treadmill

Model # 831248400 Official Proform treadmill

Here are the diagrams and repair parts for Official Proform 831248400 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 120 parts  |
Treadmill Walking Belt Lubricant (replaces 134591) 219168

#NI16

All parts diagram

Treadmill walking belt lubricant (replaces 134591)

Part #219168

BEST SELLER
This item is not returnable
$3.99
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Treadmill Safety Key Assembly (replaces 201576) 208603

#74

All parts diagram

Treadmill safety key assembly (replaces 201576)

Part #208603

BEST SELLER
This item is not returnable
$4.69 | 
18% OFF Phone Price : $5.69
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Treadmill Incline Motor Sensor Kit 286707

#92B

All parts diagram

Treadmill incline motor sensor kit

Part #286707

This item is not returnable
$15.38 | 
12% OFF Phone Price : $17.38
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Treadmill Walking Belt Lubricant, 3-pack (replaces 202557, 219897) 219170

#NI17

All parts diagram

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

Part #219170

$23.69 | 
20% OFF Phone Price : $29.69
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Treadmill Rear Roller 248571

#54

All parts diagram

Treadmill rear roller

Part #248571

$70.79 | 
8% OFF Phone Price : $76.79
In Stock
Toyostove Exercise Equipment Rubber Pad 157600

#78

All parts diagram

Toyostove exercise equipment rubber pad

Part #157600

This item is not returnable
$2.16
In Stock
Treadmill Walking Belt 308725

#47

All parts diagram

Treadmill walking belt

Part #308725

$97.59 | 
11% OFF Phone Price : $109.59
In Stock
Weider Belt Guide 198640

#41

All parts diagram

Weider belt guide

Part #198640

This item is not returnable
$2.16
In Stock
Exercise Equipment Washer 153196

#84

All parts diagram

Exercise equipment washer

Part #153196

This item is not returnable
$2.99
In Stock
Black & Decker Treadmill Nut 119425

#32

All parts diagram

Black & decker treadmill nut

Part #119425

This item is not returnable
$2.16
In Stock

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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…

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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'…

Read more
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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