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NordicTrack
Treadmill

Model # NTHK99901 Official NordicTrack adventure treadmill

Here are the diagrams and repair parts for Official NordicTrack NTHK99901 adventure 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 170 parts  |
Treadmill Walking Belt Alignment Tool (replaces 161927) 128457
#65

Frame diagram

Treadmill walking belt alignment tool (replaces 161927)

Part #128457

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This item is not returnable
$2.49 | 
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Exercise Equipment Screw 105444
#69

Frame diagram

Exercise equipment screw

Part #105444

This item is not returnable
$2.16
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Treadmill Washer 014063
#70

Frame diagram

Treadmill washer

Part #014063

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
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Lawn Tractor Mulch Opening Decal 148803
#34

Frame diagram

Lawn tractor mulch opening decal

Part #148803

This item is not returnable
$2.99
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Exercise Equipment Nut 012149
#90

Frame diagram

Exercise equipment nut

Part #012149

This item is not returnable
$2.16
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Handrail End Cap 131221
#86

Frame diagram

Handrail end cap

Part #131221

This item is not returnable
$2.16
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Exercise Equipment Reed Switch 157504
#87

Frame diagram

Exercise equipment reed switch

Part #157504

This item is not returnable
$10.99
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Wire,jmpr,14 115869

#NI

All parts diagram

Wire,jmpr,14

Part #115869

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$2.99
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Compact Disc 225210

#NI

All parts diagram

Compact disc

Part #225210

$75.99
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Wire,hrns,14 137381
#50

Frame diagram

Wire,hrns,14

Part #137381

This item is not returnable
$4.49
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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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