Proform
Treadmill

Model #831297990 Official Proform proform 18i treadmill

Here are the diagrams and repair parts for Proform 831297990 proform 18i treadmill, as well as links to manuals and error code tables, if available.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Showing 10 of 143 parts

Treadmill Drive Belt

#14

All parts Diagram

Belt

Part #118016
Replaced by #224019
?
Manufacturer substitution
This part replaces 118016. Substitute parts can look different from the original.
BEST SELLER
In Stock
$11.02 | 
15% OFF 
Phone Price: $13.02
Treadmill Circuit Breaker, 15-amp

#56

All parts Diagram

Treadmill circuit breaker, 15-amp

Part #109382
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This item is not returnable
In Stock
$9.39 | 
10% OFF 
Phone Price: $10.39
Treadmill Walking Belt Alignment Tool

#24

All parts Diagram

Treadmill walking belt alignment tool

Part #128457
This item is not returnable
In Stock
$2.49 | 
29% OFF 
Phone Price: $3.49
Treadmill Power Cord

#53

All parts Diagram

Treadmill power cord

Part #031229
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$11.39 | 
15% OFF 
Phone Price: $13.39
Exercise Equipment Magnet

#107

All parts Diagram

Magnet,rnd,m

Part #100498
Replaced by #113842
?
Manufacturer substitution
This part replaces 100498. Substitute parts can look different from the original.
This item is not returnable
In Stock
$2.16
Treadmill Pan Fastener

#63

All parts Diagram

Treadmill pan fastener

Part #138853
This item is not returnable
In Stock
$2.16
Elliptical Washer

#43

All parts Diagram

Elliptical washer

Part #014132
This item is not returnable
In Stock
$2.16
Treadmill Walking Belt Alignment Tool Holder

#29

All parts Diagram

Treadmill walking belt alignment tool holder

Part #016028
This item is not returnable
In Stock
$2.16
Exercise Equipment Screw

#102A

All parts Diagram

Exercise equipment screw

Part #013576
This item is not returnable
In Stock
$2.16
Upright Spacer

#NI

All parts Diagram

Upright spacer

Part #129542
This item is not returnable
In Stock
$2.16

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: faulty sensors, wiring failure, bad control console
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor control board
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor
Main causes: bad control console, wiring failure, bad motor control board
Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor
Main causes: damaged walking belt, improper belt tension, bad roller bearing
Main causes: rear roller out of alignment, damaged walking belt, bad roller

Repair guides for treadmills

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

June 1, 2015
By Lyle Weischwill
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 motor correctly.

Repair difficulty
Time required
 15 minutes or less
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 these steps.

Repair difficulty
Time required
 45 minutes or less
June 1, 2015
By Lyle Weischwill
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't run.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all fitness & exercise

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

June 29, 2022

Top questions about Sears and Sears PartsDirect

By Lyle Weischwill

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