Lifestyler
Treadmill

Model # 374288900 Official Lifestyler treadmill

Here are the diagrams and repair parts for Official Lifestyler 374288900 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 76 parts  |

Long Key 29353400
#27D

Figure 2 diagram

Long key

Part #29353400

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

Pivot Rod 31184500
#30

Figure 2 diagram

Pivot rod

Part #31184500

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

Screw,sht Mt 20018900
#36

Figure 2 diagram

Screw,sht mt

Part #20018900

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

Screw 20013100
#33

Figure 1 diagram

Screw

Part #20013100

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

Head Bolt 22022700
#27F

Figure 2 diagram

Head bolt

Part #22022700

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

Screw 23018300
#6B

Figure 1 diagram

Screw

Part #23018300

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

Assy,front R 39330900
#22

Figure 2 diagram

Assy,front r

Part #39330900

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

Ear Clip 37023700
#4

Figure 1 diagram

Ear clip

Part #37023700

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

Washer 26006300
#48

Figure 2 diagram

Washer

Part #26006300

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

Potentiometer 37027800
#11C

Figure 1 diagram

Potentiometer

Part #37027800

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.…