Lifestyler
Treadmill

Model # 374288500 Official Lifestyler treadmill

Here are the diagrams and repair parts for Official Lifestyler 374288500 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 72 parts  |

Axle 31242600
#43C

Motor and walking belt assembly diagram

Axle

Part #31242600

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

Screw 20013100
#16

Control panel diagram

Screw

Part #20013100

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

Cap Foot 02007700
#45D

Motor and walking belt assembly diagram

Cap foot

Part #02007700

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

Washer 26000400
#30

Motor and walking belt assembly diagram

Washer

Part #26000400

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

Incl Carr As 39311800
#43

Motor and walking belt assembly diagram

Incl carr as

Part #39311800

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

Handrail 30415316
#45A

Motor and walking belt assembly diagram

Handrail

Part #30415316

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

J Bolt 23018400
#38

Motor and walking belt assembly diagram

J bolt

Part #23018400

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

Elec Monitor 37028800
#2

Control panel diagram

Elec monitor

Part #37028800

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

Treadbrd/cvr 39319300
#24

Motor and walking belt assembly diagram

Treadbrd/cvr

Part #39319300

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

Bolt 22011200
#21

Motor and walking belt assembly diagram

Bolt

Part #22011200

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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

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

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

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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

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

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Repair guides for treadmills

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

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…

Repair difficulty
Time required
 15 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'…

Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Repair difficulty
Time required
 30 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.

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.…