Model # NTTL18905 Official NordicTrack apex 4100i treadmill

Here are the diagrams and repair parts for Official NordicTrack NTTL18905 apex 4100i 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 180 parts |

Treadmill walking belt alignment tool (replaces 161927)

Part #128457

This item is not returnable

$2.49 |

29% OFF Phone Price : $3.49

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Treadmill Circuit Breaker, 15-amp (replaces 031103, 127202, 173322) 109382

#55

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

Part #109382

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$9.39 |

10% OFF Phone Price : $10.39

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Treadmill safety key assembly

Part #160695

This item is not returnable

$5.99

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#107

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Magnet,rnd,m

Part #100498

Replaced by #113842

This item is not returnable

$2.16

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Black & Decker Exercise Equipment Reed Switch 157504

#20

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Black & decker exercise equipment reed switch

Part #157504

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$10.99

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#12

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Treadmill drive motor

Part #172833

$458.27

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#77

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Exercise equipment nut

Part #012179

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$2.16

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Treadmill screw

Part #149442

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$2.16

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#23

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Screw,sfhms,

Part #160515

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$3.99

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#38

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Custom screw

Part #175162

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$2.16

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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…

Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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…

Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

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 the…

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'…

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

Model # NTTL18905 Official NordicTrack apex 4100i treadmill

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for treadmills

Why won't my treadmill power up?

Why is my treadmill's walking belt off center?

Why won't my treadmill start even though the console display works?

Why is my treadmill's heart rate sensor not accurate?

Why does my treadmill have no display?

Why does my treadmill's walking belt slow down?

Why is my treadmill's walking belt slipping?

Repair guides for treadmills

How to replace a treadmill motor controller

How to replace a treadmill walking belt

How to replace a treadmill drive motor

Effective articles & videos to help repair your fitness & exercise

Top questions about Sears and Sears PartsDirect

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