Schwinn
Treadmill

Model # 840 Official Schwinn treadmill

Here are the diagrams and repair parts for Official Schwinn 840 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 46 parts  |

Treadmill Walking Belt 003-2574
#24

Deck assy diagram

Treadmill walking belt

Part #003-2574

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

Treadmill Drive Motor 003-9058
#19

Deck assy diagram

Treadmill drive motor

Part #003-9058

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

Console Assembly 003-2414
#1

Upright assy diagram

Console assembly

Part #003-2414

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

Data Cable Kit 003-2540
#17

Upright assy diagram

Data cable kit

Part #003-2540

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

Incline Base Kit 003-8656
#45

Deck assy diagram

Incline base kit

Part #003-8656

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

End Cap,elevation Frame 003-2526
#13

Upright assy diagram

End cap,elevation frame

Part #003-2526

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

Power Switch Set 003-8657
#35

Deck assy diagram

Power switch set

Part #003-8657

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

Rear Roller 003-2538
#28

Deck assy diagram

Rear roller

Part #003-2538

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

Shock W/storage Lock 003-2544
#41

Deck assy diagram

Shock w/storage lock

Part #003-2544

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

Plugs Handle 003-2517
#9

Upright assy diagram

Plugs handle

Part #003-2517

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

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

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

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 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…

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'…

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.

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.…