Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Lifestyler
Treadmill

Model # 374288450 Official Lifestyler prime fit concourse 10.55 gi treadmill

Here are the diagrams and repair parts for Official Lifestyler 374288450 prime fit concourse 10.55 gi treadmill, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Owner’s manual

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 109 parts  |
Lock Nut 25014600
Lock nut

Part #25014600

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

Hex Screw 23021000
#55

Motor and walking belt assembly diagram

Hex screw

Part #23021000

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

Motor/mnt As 39379300
#35

Motor and walking belt assembly diagram

Motor/mnt as

Part #39379300

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

Rr/lf Guard 09170200
#19

Motor and walking belt assembly diagram

Rr/lf guard

Part #09170200

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

F Handrail 30464516
#7

Motor and walking belt assembly diagram

F handrail

Part #30464516

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

Treadboard 39378500
#11

Motor and walking belt assembly diagram

Treadboard

Part #39378500

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

Bracket 31299616
#30

Motor and walking belt assembly diagram

Bracket

Part #31299616

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

R Handrail 30464216
#3

Motor and walking belt assembly diagram

R handrail

Part #30464216

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

Tread Belt 09172300
#12

Motor and walking belt assembly diagram

Tread belt

Part #09172300

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

Mtl Screw 20022900
#65

Motor and walking belt assembly diagram

Mtl screw

Part #20022900

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

View all

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…

Read more

Why is my treadmill's walking belt off center?

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

Read more

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…

Read more

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

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

Read more

Why does my treadmill have no display?

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

Read more

Why does my treadmill's walking belt slow down?

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

Read more

Why is my treadmill's walking belt slipping?

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

Read more

Repair guides for treadmills

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

View all
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…

Read more
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…

Read more
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'…

Read more
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.

View all
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.…

Read more

Parts & More