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Treadmill

Model # PFTL79021 Official Proform 720 treadmill

Here are the diagrams and repair parts for Official Proform PFTL79021 720 treadmill, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 146 parts  |
Treadmill Safety Key (replaces 125589, 153017) 119038
Treadmill safety key (replaces 125589, 153017)

Part #119038

BEST SELLER
This item is not returnable
$3.14 | 
24% OFF Phone Price : $4.14
In Stock
Treadmill Walking Belt Alignment Tool (replaces 161927) 128457

#64

All parts diagram

Treadmill walking belt alignment tool (replaces 161927)

Part #128457

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
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Belt 198026

#68

All parts diagram

Belt

Part #198026

Replaced by #224176

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Manufacturer substitution
This part replaces 198026. Substitute parts can look different from the original.
$64.79 | 
8% OFF Phone Price : $70.79
In Stock
Magnet,rnd,m 100498

#19

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Magnet,rnd,m

Part #100498

Replaced by #113842

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Manufacturer substitution
This part replaces 100498. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Black & Decker Treadmill Transport Wheel 165009

#94

All parts diagram

Black & decker treadmill transport wheel

Part #165009

This item is not returnable
$2.99
In Stock
Weslo Exercise Equipment Screw 130659

#52A

All parts diagram

Weslo exercise equipment screw

Part #130659

This item is not returnable
$2.16
In Stock
Lifestyler Exercise Equipment Screw 146427

#80

All parts diagram

Lifestyler exercise equipment screw

Part #146427

This item is not returnable
$2.16
In Stock
Exercise Equipment Screw 013576

#86

All parts diagram

Exercise equipment screw

Part #013576

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

#23

All parts diagram

Lifestyler exercise equipment screw

Part #013607

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Weslo Pin Clip 156273

#25

All parts diagram

Weslo pin clip

Part #156273

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…

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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'…

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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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