Schwinn
Treadmill

Model # SCHWINN 840 Official Schwinn treadmill

Here are the diagrams and repair parts for Official Schwinn 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

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

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

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

Power Socket 003-2551
#32

Deck assy diagram

Power socket

Part #003-2551

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

Rubber Feet,pair 003-2548
#38

Deck assy diagram

Rubber feet,pair

Part #003-2548

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

Transport Wheel Assembly 003-2525
#39

Deck assy diagram

Transport wheel assembly

Part #003-2525

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

Right Upright 003-2521
#14

Upright assy diagram

Right upright

Part #003-2521

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.…