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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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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

Cable Roc Keys Asy SM41193
#NI

Motor assy diagram

Cable roc keys asy

Part #SM41193

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

Cable Lower Asy SM27951
#NI

Motor assy diagram

Cable lower asy

Part #SM27951

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

Hole Plug SM41616
#27

Motor assy diagram

Hole plug

Part #SM41616

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

Noise Filter SM27317
#23

Motor assy diagram

Noise filter

Part #SM27317

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

Vsd Asy SM41646
#31

Motor assy diagram

Vsd asy

Part #SM41646

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

Circuit Breaker SM27319
#NI

Motor assy diagram

Circuit breaker

Part #SM27319

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

Kit,retro Handrail Asy SM41605
#NI

Motor assy diagram

Kit,retro handrail asy

Part #SM41605

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

Ext,harness Mtr/ther SM17550
#NI

Motor assy diagram

Ext,harness mtr/ther

Part #SM17550

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

Clevis Pin SM41259
#57

Frame assy diagram

Clevis pin

Part #SM41259

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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