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Nautilus
Treadmill

Model # T914 Official Nautilus treadmill

Here are the diagrams and repair parts for Official Nautilus T914 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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ALL PARTS
Showing 10 of 136 parts  |
Cover,mtr SM41108
#40

Covers assy diagram

Cover,mtr

Part #SM41108

The manufacturer no longer makes this part, and there's no substitute part

Kit,hardware,extrus Set SM26408
#102

Rail assy diagram

Kit,hardware,extrus set

Part #SM26408

The manufacturer no longer makes this part, and there's no substitute part

Screw 0.375-16x2.5 SM22016
#62

Roller assy diagram

Screw 0.375-16x2.5

Part #SM22016

The manufacturer no longer makes this part, and there's no substitute part

Screw 0.250x0.50 SM22139
#33

Motor assy diagram

Screw 0.250x0.50

Part #SM22139

The manufacturer no longer makes this part, and there's no substitute part

Washer SM27585
#65

Roller assy diagram

Washer

Part #SM27585

The manufacturer no longer makes this part, and there's no substitute part

Harness,trnsfrmr Asy SM27356
#NI

Motor assy diagram

Harness,trnsfrmr asy

Part #SM27356

The manufacturer no longer makes this part, and there's no substitute part

P0wer Inlet Rear Asy SM41476
#1

Motor assy diagram

P0wer inlet rear asy

Part #SM41476

The manufacturer no longer makes this part, and there's no substitute part

Cable Rr Pwr Asy SM41190
#2

Motor assy diagram

Cable rr pwr asy

Part #SM41190

The manufacturer no longer makes this part, and there's no substitute part

Washer SM27441
#14

Motor assy diagram

Washer

Part #SM27441

The manufacturer no longer makes this part, and there's no substitute part

Fast Tab SM27000
#90

Console assy diagram

Fast tab

Part #SM27000

The manufacturer no longer makes this part, and there's no substitute part

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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