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Lifestyler
Fitness & Exercise

Model # 831159421 Official Lifestyler system 300

Here are the diagrams and repair parts for Official Lifestyler 831159421 system 300, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 118 parts  |
Puly,3.5"od, 115370
#12

Unit parts diagram

Puly,3.5"od,

Part #115370

Replaced by #230475

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Manufacturer substitution
This part replaces 115370. Substitute parts can look different from the original.
$43.99 | 
12% OFF Phone Price : $49.99
In Stock
Black & Decker Treadmill Washer 014063
Black & decker treadmill washer

Part #014063

This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Image Weight System Ankle Strap 115177
Image weight system ankle strap

Part #115177

This item is not returnable
$9.99
In Stock
Proform Weight System Cable, 264-1/2-in 121590
Proform weight system cable, 264-1/2-in

Part #121590

$36.19 | 
14% OFF Phone Price : $42.19
In Stock
Black & Decker Exercise Equipment Nut 012149
Black & decker exercise equipment nut

Part #012149

This item is not returnable
$2.16
In Stock
Nordictrack Bolt, 1/4 X 2-1/2-in 116185

#NI

All parts diagram

Nordictrack bolt, 1/4 x 2-1/2-in

Part #116185

This item is not returnable
$2.16
In Stock
Exercise Equipment Screw 122925
Exercise equipment screw

Part #122925

This item is not returnable
$2.16
In Stock
Exercise Equipment Carriage Bolt 121567
Exercise equipment carriage bolt

Part #121567

This item is not returnable
$2.16
In Stock
Image Screw,hhcs,b 121420
Image screw,hhcs,b

Part #121420

This item is not returnable
$2.16
In Stock
Exercise Equipment Bolt 013547
Exercise equipment bolt

Part #013547

This item is not returnable
$2.16
In Stock

Symptoms for elliptical machines

Choose a symptom to see related elliptical repairs.

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Why does my elliptical make squeaking noises?

Main cause: lack of lubrication on pivot points…

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Why does my elliptical display the wrong speed?

Main causes: faulty reed switch, reed switch needs adjustment, wiring failure, bad control console…

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Why can't my elliptical detect my heart rate?

Main causes: dirty heart rate sensors, wiring failure, bad control console…

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Why won't my elliptical's console turn on?

Main causes: dead batteries, power supply failure, bad wiring connections, faulty control console…

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How do I tighten elliptical handle bars?

Main causes: loose fastening bolts, damaged handle bars…

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Why is my elliptical's console display dim?

Main causes: weak batteries, loose wires, faulty control console…

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Why does my elliptical rock?

Main causes: leveling feet need to be adjusted, loose frame bolts, unstable flooring…

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Why won't my elliptical's pedal resistance change?

Main causes: bad resistance motor, faulty control console, wiring failure…

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Repair guides for elliptical machines

These step-by-step repair guides will help you safely fix what’s broken on your elliptical.

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How to replace an elliptical resistance motor

How to replace an elliptical resistance motor

If the resistance motor is not changing the resistance on your elliptical, replace it using these steps.…

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Repair difficulty
Time required
 15 minutes or less
How to adjust an elliptical reed switch

How to adjust an elliptical reed switch

If the console doesn't display the correct speed on your elliptical, adjust the reed switch using these steps.…

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Repair difficulty
Time required
 15 minutes or less
How to replace an elliptical console

How to replace an elliptical console

If the console on your elliptical doesn't work, replace it by following these 3 easy steps.…

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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 elliptical.

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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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