Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Tips to find your model number
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 # J800 Official Lifestyler treadmill

Here are the diagrams and repair parts for Official Lifestyler J800 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.

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 104 parts  |
Pcb Assembly 904300

#105

All parts diagram

Pcb assembly

Part #904300

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

Manual Guide J800

#NI

All parts diagram

Manual guide

Part #J800

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

Strap 902400

#5

All parts diagram

Strap

Part #902400

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

Pot Wheel 904810

#83

All parts diagram

Pot wheel

Part #904810

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

End Cap 902902

#10

All parts diagram

End cap

Part #902902

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

Nut 907100

#15

All parts diagram

Nut

Part #907100

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

Bed 902500

#18

All parts diagram

Bed

Part #902500

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

Bushing 906401

#50

All parts diagram

Bushing

Part #906401

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

Screw 906702
Screw

Part #906702

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

Cover Plate 907101

#122

All parts diagram

Cover plate

Part #907101

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 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

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 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

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 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
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…

Read more
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.

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