Easy
15-30 minutes
This Dewalt switch is a common replacement part and is compatible with the Dewalt tools listed below. This switch is a genuine Dewalt replacement part. It is a standard on/off switch and has four terminals. This switch has its four terminals located on the bottom, not the side, of the body but it is fully compatible with both configurations.
Switch Kit 429977-00
OEM part for: DeWALT, Black and Decker
Part Number: 429977-00
$38.34
Usually ships in 7 - 12 business days
Leaves our warehouse within 7 - 12 business days
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Product Description ?
- OEM Dewalt on/off switch
- Includes wiring diagram
- Compatible with many Dewalt saws
- Classification: Part
- Weight: 0.04 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Switch Kit will fit the following 30 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 30 matching models.
30 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Black and Decker
- DeWALT
This item works with the following types of products:
- Circular Saw
- Saw
Repair Videos ?
Watch the Repair Video for
Switch Kit
Articles:
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Step-by-step instructions for removing and installing the switch on your DeWALT circular saw....
June 13, 2018
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Customer Part Reviews ?
Average Rating (out of 5):
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Part arrives very quick
Part arrives quickly. I appreciate that. Thank you so much.
Guest -
May 5, 2023
Verified Purchase
Easy Repair.
Fast ship. Directions included.
Guest -
July 27, 2022
Verified Purchase
ease repair and good service !!!!!
work as it should and received quickly in good shape !!!
Would buy from again !!!!
Guest -
April 26, 2022
Verified Purchase
good part, very fast delivery.
the part showed up quickly and worked as it was supposed to. very happy to have found this company.
Guest -
January 7, 2022
Verified Purchase
Good service
Right fit, thanks. Delivery slow, but all is good. Thanks
Guest -
December 14, 2020
Verified Purchase
Switch
Good condition. Easy to install.
Guest -
June 13, 2020
Verified Purchase
I was ‘triggered’
Saved me from having to buy a new saw, the only negative was the new wiring diagram since the shortest wire has to go the farthest distance to attach to the proper terminal. Might want to research that guys.
Guest -
November 23, 2019
Verified Purchase
Right Replacement, perfect fit.
This was the perfect replacement part for my dewalt circular saw. I've bought several parts in the past with this company hands down my go to parts store. Great price and fast shipping. I highly recommend doing business with them.
Guest -
November 4, 2019
Verified Purchase
Fits OLD Black and Decker U337!!
I have an old Black and Decker U337 saw my father-in-law picked up for me at a garage sale. It worked well, except the switch was intermittent. Took it apart and found the contacts nearly eroded away. Searching for a switch for this saw kept pointing me to this DeWalt part. I was skeptical, but as time wore on, I saw I was never going to get to "rebuilding that switch." I decided to buy one of these, as the mounting and size looked correct (thanks for the great part pictures, by the way!!). Turns out it was a perfect fit. I had to wire it differently as this saw doesn't even know what a blade brake is, and I added a little heat shrink to the wire terminals since they had a lot of exposed conductor and the new wiring had them much closer to the case and to each other. But the switch bolted right to the saw, fits perfectly, and works. No more saw stopping in the middle of a cut, or having to double-click to get it to start!
Guest -
July 8, 2019
Verified Purchase
Easy Repair
Repaired Quickly. Works Good.
Guest -
July 4, 2019
Verified Purchase
Questions & Answers ?
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Replaced faulty switch
alan - November 2, 2016
👍 4 of 5 people found this instruction helpful
Tool Type
Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
Removed the old switch and replaced it with the new one. Make sure to take a picture or notes for the correct wiring.
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Power trigger inop, needed new brushes and handle cracked.
Al - April 25, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Circular Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver
Removed housing, unscrewed parts, replaced with new parts and re-assembled. Unscrewed brushes ports and slid in new brushes
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Circular saw switch started sticking when going off (4 years ago), then wouldn't turn off, to momentarily on/ff, to not on al all (all follwing each other in 1 hour)
Mark - September 15, 2022
Tool Type
Circular Saw
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver
Parts Used
1. Removed the saw body half (torx screws)
2. Remove old switch (one torx screw)
3. Install new switch. (New switch has different terminal orientations, but using same wires)
4. Reassemble saw body halves.
2. Remove old switch (one torx screw)
3. Install new switch. (New switch has different terminal orientations, but using same wires)
4. Reassemble saw body halves.
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wouldn't shut off
Bennie - June 14, 2020
Tool Type
Circular Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, torx
Parts Used
installed new switch. Make sure to look at new wiring instructions as the new switch was sl different from the old switch and the wiring arrangement was sl different.
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Well not turn on after switch was pressed on .
Jose - March 22, 2020
Tool Type
Circular Saw
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Omg meter ; verified contacts
Parts Used
1. Removed old switch from Handel. 2. Reinstall new switch ; notices from new wiring points that were given. .3 test results
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Had to play with switch to get saw to work
Kenneth - May 1, 2019
Tool Type
Circular Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers
Parts Used
Remove the half cover on circular saw, (5 screws).
Remove switch from inside of handle.
Change wires (4) from old switch to new one.
Reinstalled handle cover and tested.
Remove switch from inside of handle.
Change wires (4) from old switch to new one.
Reinstalled handle cover and tested.
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Donald - April 3, 2018
Tool Type
Circular Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Air compressor
Parts Used
Remove handle cover
Removed old switch
Blow out dirt inside of handle
Install new switch
Install handle cover
Tested saw
Removed old switch
Blow out dirt inside of handle
Install new switch
Install handle cover
Tested saw
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On off switch
Thomas - March 21, 2018
Tool Type
Circular Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, None
Parts Used
Removed stuck switch and replaced with new switch.
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Switch broke.
William - August 1, 2017
Tool Type
Circular Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
1. Took apart with a screwdriver.
2. Removed the old switch.
3. Secured the new switch.
4. Reassembled and tested.
2. Removed the old switch.
3. Secured the new switch.
4. Reassembled and tested.
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Cord and switch needed
martin - July 19, 2017
Tool Type
Circular Saw
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Wire stripper
Parts Used
Removed the handle
Made a wiring diagram
Removed the switch from the handle
Removed the cord clamp
Removed the motor leads from the switch
Removed the old switch and cord
Slid the cord protector on the new cord
Connected all of the wires to the new switch
Attached the new switch to the handle
Screwed in the cord clamp
Assembled the handle
Made a wiring diagram
Removed the switch from the handle
Removed the cord clamp
Removed the motor leads from the switch
Removed the old switch and cord
Slid the cord protector on the new cord
Connected all of the wires to the new switch
Attached the new switch to the handle
Screwed in the cord clamp
Assembled the handle
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All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
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