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Proform
Treadmill

Model # 831299204 Official Proform t35 treadmill

Here are the diagrams and repair parts for Official Proform 831299204 t35 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 97 parts  |
Treadmill Safety Key (replaces 125589, 153017) 119038
#2

Walking belt/console/motor diagram

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
Belt 118016
#12

Walking belt/console/motor diagram

Belt

Part #118016

Replaced by #224019

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Manufacturer substitution
This part replaces 118016. Substitute parts can look different from the original.
BEST SELLER
$12.24 | 
14% OFF Phone Price : $14.24
In Stock
Treadmill Circuit Breaker, 15-amp (replaces 031103, 127202, 173322) 109382
#56

Walking belt/console/motor diagram

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

Part #109382

This item is not returnable
$9.39 | 
10% OFF Phone Price : $10.39
In Stock
Black & Decker Exercise Equipment Screw 105444
#83

Walking belt/console/motor diagram

Black & decker exercise equipment screw

Part #105444

This item is not returnable
$2.16
In Stock
Weider Treadmill Pan Fastener 138853
#66

Walking belt/console/motor diagram

Weider treadmill pan fastener

Part #138853

This item is not returnable
$2.16
In Stock
Exercise Equipment Rubber Pad 126650
#40

Walking belt/console/motor diagram

Exercise equipment rubber pad

Part #126650

This item is not returnable
$2.16
In Stock
Exercise Equipment Hex Nut 012056
#79

Walking belt/console/motor diagram

Exercise equipment hex nut

Part #012056

This item is not returnable
$2.16
In Stock
Exercise Equipment Handle End Cap, 1.5-in 116980
#41

Walking belt/console/motor diagram

Exercise equipment handle end cap, 1.5-in

Part #116980

This item is not returnable
$2.16
In Stock
Black & Decker Power Cord Grommet 173169
#55A

Walking belt/console/motor diagram

Black & decker power cord grommet

Part #173169

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Screw 112609
#51

Walking belt/console/motor diagram

Weider exercise equipment screw

Part #112609

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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