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DP 21-3900 treadmill Parts
Here are the diagrams and repair parts for DP 21-3900 treadmill, as well as links to manuals and error code tables, if available.
By Schematic
SELECT DIAGRAM
Browse Parts for 21-3900 Fitness & Exercise
Figure 1 diagram
Spd Cnt Knob
Part #39215000
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Motor
Part #37035400
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Pullpin
Part #29438300
The manufacturer no longer makes this part, and there's no substitute part
Figure 1 diagram
Bushing
Part #37016900
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Motor Pan
Part #09161800
The manufacturer no longer makes this part, and there's no substitute part
Washer
Part #26000667
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Controller
Part #37035700
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Pivot Rod
Part #31184500
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Bolt
Part #23016300
The manufacturer no longer makes this part, and there's no substitute part
Figure 2 diagram
Treadmill Drive Belt
Part #09091000
The manufacturer no longer makes this part, and there's no substitute part
Most common symptoms to help you fix your fitness & exercise
Choose a symptom to see related treadmill repairs.
Main causes: bad resistance motor, faulty control console, wiring failure…
Main causes: dead batteries, power supply failure, bad wiring connections, faulty control console…
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 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 time and Difficulty
45 minutes or less
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 time and Difficulty
30 minutes or less
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 time and Difficulty
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.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
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