Proform
Treadmill

Model #PFTL685050 Official Proform 400 gl/400 gi treadmill

Here are the diagrams and repair parts for Proform PFTL685050 400 gl/400 gi treadmill, as well as links to manuals and error code tables, if available.

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Showing 10 of 129 parts

Treadmill Walking Belt Lubricant (replaces 134591)

#NI40

All parts Diagram

Lube,icon,wl

Part #134591
Replaced by #219168
?
Manufacturer substitution
This part replaces 134591. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$3.99
Treadmill Safety Key Assembly (replaces 201576)

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Treadmill safety key assembly (replaces 201576)

Part #208603
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In Stock
$4.69 | 
18% OFF 
Phone Price: $5.69
Treadmill Walking Belt Alignment Tool (replaces 161927)

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Treadmill walking belt alignment tool (replaces 161927)

Part #128457
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In Stock
$2.49 | 
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Phone Price: $3.49
Treadmill Washer#38

Treadmill Diagram

Treadmill washer

Part #014063
This item is not returnable
In Stock
$2.49 | 
29% OFF 
Phone Price: $3.49
Treadmill Transport Wheel

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Treadmill transport wheel

Part #199545
This item is not returnable
In Stock
$2.99
Treadmill Reed Switch and Sensor Wire (replaces 160068, 249538)#10

Treadmill Diagram

In Stock
$10.19 | 
16% OFF 
Phone Price: $12.19
Exercise Equipment Magnet#18

Treadmill 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
Exercise Equipment Nut#67

Treadmill Diagram

Exercise equipment nut

Part #012179
This item is not returnable
In Stock
$2.16
Exercise Equipment Rubber Pad

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Exercise equipment rubber pad

Part #157600
This item is not returnable
In Stock
$2.16
Belt Guide#82

Treadmill Diagram

Belt guide

Part #198640
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: 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
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor control board

Repair guides for treadmills

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

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
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

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