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Treadmill

Model # PFTL20861 Official Proform proform 785 xt treadmill

Here are the diagrams and repair parts for Official Proform PFTL20861 proform 785 xt 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 136 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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Treadmill Walking Belt Alignment Tool (replaces 161927) 128457

#NI

All parts diagram

Treadmill walking belt alignment tool (replaces 161927)

Part #128457

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$2.49 | 
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Treadmill Circuit Breaker, 15-amp (replaces 031103, 127202, 173322) 109382
#53

Unit parts diagram

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

Part #109382

This item is not returnable
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Black & Decker Exercise Equipment Screw 013438
#2

Unit parts diagram

Black & decker exercise equipment screw

Part #013438

This item is not returnable
$2.16
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Exercise Equipment Screw 013576
Exercise equipment screw

Part #013576

This item is not returnable
$2.16
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Exercise Equipment Flat Washer 014073
Exercise equipment flat washer

Part #014073

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Screw 112609
#54

Unit parts diagram

Weider exercise equipment screw

Part #112609

This item is not returnable
$2.16
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Foam Grip, 6-in 105500
#5

Unit parts diagram

Foam grip, 6-in

Part #105500

This item is not returnable
$2.16
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Lifestyler Wshr,flat,sa 014170
Lifestyler wshr,flat,sa

Part #014170

This item is not returnable
$2.16
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Decal,assy I 129833

#NI

All parts diagram

Decal,assy i

Part #129833

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$2.16
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Symptoms for treadmills

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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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