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
DeWalt
Rotary Tool

Model # D25551KT1 Official DeWalt rotary tool

Here are the diagrams and repair parts for Official DeWalt D25551KT1 rotary tool, 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 107 parts  |
O-ring 323711-26
#170

Gearcase cover/clutch/cylinder diagram

O-ring

Part #323711-26

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

Ring 577746-00
#317

Top cover/armature/field case diagram

Ring

Part #577746-00

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

Ring 323763-04
#287

Gearcase cover/clutch/cylinder diagram

Ring

Part #323763-04

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

O-ring 577744-02
#268

Gearcase cover/clutch/cylinder diagram

O-ring

Part #577744-02

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

Seal 325936-00
#154

Gearcase cover/clutch/cylinder diagram

Seal

Part #325936-00

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

Dewalt Link 577731-00
#190

Gearcase cover/clutch/cylinder diagram

Dewalt link

Part #577731-00

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

Shutter 326579-00
#131

Top cover/armature/field case diagram

Shutter

Part #326579-00

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

Fan 577736-00
#129

Top cover/armature/field case diagram

Fan

Part #577736-00

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

Dewalt Armature 580383-03
#101

Top cover/armature/field case diagram

Dewalt armature

Part #580383-03

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

Screw 330065-08
#114

Top cover/armature/field case diagram

Screw

Part #330065-08

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

Articles and videos for treadmills

Use the advice and tips in these articles and videos to get the most out of your treadmill.

View all
How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Read more
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
How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

Read more

Parts & More