Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Proform
Treadmill

Model # PFTL78571 Official Proform proform 785 treadmill

Here are the diagrams and repair parts for Official Proform PFTL78571 proform 785 treadmill, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 135 parts  |
Treadmill Line Filter 130993

#41

All parts diagram

Treadmill line filter

Part #130993

$34.19 | 
15% OFF Phone Price : $40.19
In Stock
Black & Decker Treadmill Washer 014063

#51

All parts diagram

Black & decker treadmill washer

Part #014063

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Treadmill Incline Wheel 132314

#101

All parts diagram

Treadmill incline wheel

Part #132314

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Screw 013275

#50

All parts diagram

Weider exercise equipment screw

Part #013275

This item is not returnable
$2.16
In Stock
Wire,jmpr,4" 109407

#NI

All parts diagram

Wire,jmpr,4"

Part #109407

This item is not returnable
$2.16
In Stock
Image Warning Decal 151940

#NI

All parts diagram

Image warning decal

Part #151940

This item is not returnable
$2.16
In Stock
Caution Decal 139442

#92

All parts diagram

Caution decal

Part #139442

This item is not returnable
$5.99
In Stock
Proform Om,pftl78571 143251

#NI

All parts diagram

Proform om,pftl78571

Part #143251

This item is not returnable
$3.99
In Stock
Weider Exercise Equipment Flat Washer 122812

#47

All parts diagram

Weider exercise equipment flat washer

Part #122812

This item is not returnable
$2.16
In Stock
Black & Decker Exercise Equipment Hex Nut 120867

#49

All parts diagram

Black & decker exercise equipment hex nut

Part #120867

This item is not returnable
$2.16
In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

View all

Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Read more

Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Read more

Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Read more

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…

Read more

Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

Read more

Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

Read more

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…

Read more

Repair guides for treadmills

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

View all
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…

Read more
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'…

Read more
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.

View all
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.…

Read more

Parts & More