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DP
Treadmill

Model # 21-2865A Official DP ergometer treadmill

Here are the diagrams and repair parts for Official DP 21-2865A ergometer 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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ALL PARTS
Showing 10 of 82 parts  |
Collar 30306116
#130

Motor belt and walking assembly diagram

Collar

Part #30306116

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

Mtr Mount 38221510
#135

Motor belt and walking assembly diagram

Mtr mount

Part #38221510

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

Rubber Pad 04030500
#117

Motor belt and walking assembly diagram

Rubber pad

Part #04030500

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

Upright Rh 38224416
Upright rh

Part #38224416

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

Var Pulley 39173200
#143

Motor belt and walking assembly diagram

Var pulley

Part #39173200

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

5/16 Locknut 25009800
5/16 locknut

Part #25009800

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

Tube Plug 02030900
#116

Motor belt and walking assembly diagram

Tube plug

Part #02030900

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

Lock Nut 25011100
#121

Motor belt and walking assembly diagram

Lock nut

Part #25011100

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

Bolt 22011500
#134

Motor belt and walking assembly diagram

Bolt

Part #22011500

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

Bolt 22005900
#153

Motor belt and walking assembly diagram

Bolt

Part #22005900

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

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

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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…

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Why is my treadmill's walking belt off center?

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

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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…

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

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

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Why does my treadmill have no display?

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

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Why is my treadmill's walking belt slipping?

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

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Repair guides for treadmills

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

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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…

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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'…

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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…

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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.

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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.…

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