Part Location Diagram of 23-66-2635 Milwaukee Switch
See part A-60 in the diagram
( Grid squares measure 1x1 inch )

Switch 23-66-2635

Manufactured by:
Milwaukee
ERP Number:
ERP10123797
Part Number:
23-66-2635
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(8 rated repairs) ?

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Product Description

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This is an on/off switch for various models of circular saws. This switch is located near the main handle assembly of the saw and responsible for toggling the power to the saw. This switch is made of durable black plastic and features a single toggle that the user presses to turn the saw on. Over time and through extended use, this switch can wear out and fail, at which point it needs to be tested with a multimeter, and/or replaced. To remove this switch for testing and replacement, you will need to first disconnect it from power, and then disassemble one half of the main handle with a drill or screwdriver. Once the securing screws are removed, you can pull the plastic shell of the handle off to expose its internal components. Pull the switch out of the housing and remove the wires connected to it, noting their location for the future installation. With the switch removed, you can test it with a multimeter to see if it has continuity, and if it does not, it will need to be replaced. With the new switch in-hand, install the wires with a screwdriver, starting with the motor wires (usually black first, and then white) and then the cord wires. Now place the switch into the housing and make sure the switch and wires are all flush, before reassembling the handle and securing it together.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Milwaukee
This part works with the following products:
  • Circular Saw
  • Saw

Customer Part Reviews

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4.2
Average Rating (out of 5):
★★★★★
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Questions & Answers

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Just wondering if this trigger switch will work with this model
Brice For model number Milwaukee 2732-20 m18 saw - July 27, 2022

Hi Brice, Thank you for your question. This would not be the correct trigger switch for your circular saw. The part number listed under your model number for the trigger switch is 23-66-2635. If you need help placing an order for it, customer service is open 7 days a week and anyone will be happy to assist you. Please feel free to give us a call. We look forward to hearing from you!

eReplacementParts Team
July 27, 2022

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intermitting problem with start, when it starts it wont turn blades, most times it does not start
Charles For model number 2731-21 - December 11, 2023

Hello Charles, thank you for writing in. The most common part that is the issue for it not to start is the Switch 23-66-2635. If the blades are not turning, you should check your Inner and Outer Blade Flanges, parts 43-34-0790 and 43-34-0795 respectively. We hope this helps.

eReplacementParts Team
December 11, 2023

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I just changed the switch in the saw. Mow the LED comes on, but the motor doesn't start. Could it be a bad diode, or is it another component?
Jethro For model number 2730-20 - May 1, 2022

Hello Jethro, thank you for writing. To be sure, please ensure the correct parts are used. The Switch is part 2127441 and the Switch Lock-Out Button is part 42-42-0345. Yes, the diode 23-38-2840 is the correct next assumption. This is shown by reading a past customers testimonial " took plenty of photos before removing switch and diode. Special attention to wire colors and position before replacing cover. T25 and t15? Needed. Minimum 2 inches on some screws. Easy really, just take photos and take your time. Probably never have to replace again. Buy both parts. Switch and diode. One or both can be bad."

eReplacementParts Team
May 1, 2022

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Can't find this model on your site.Need a switch for 18v Fuel circular saw
John B For model number 2631-20 - January 2, 2024

Hello John, Thank you for your inquiry. Researching your model, we show the compatible on/off switch as part# 23-66-2635. We hope this helps.

eReplacementParts Team
January 2, 2024

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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.

Easy 

15 - 30 mins 

(8 rated repairs) ?
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Intermittent operation when pulling trigger

Michael from Spring, Texas

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
23-66-2635, 23-38-2840
1. Remove battery
2. Remove blade
3. Remove screws from the main case
4. Disconnect the shoe height adjustment lever and remove the shaft.
5. Open the case, pretty straightforward, nothing will come springing out.
6. Slide the old switch and diode out, take a photograph of the wire layout.
7. Install th e new diode to the new switch with the wires in the same position.
*Now is a good time to blow out any dust inside the case, my saw was full of MDF dust.
8. Close the case, making sure all wiring is tucked back inside neatly.
9. Install and tighten screws holding case together. Install the height adjustment mechanism and lever.
10. Install a battery and see how it works. (Mine fired off every trigger pull now, as it should).
11. Reinstall the blade. (After removing the battery again, of course).
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Bad switch

Andrew from Dickson , Tennessee

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
23-66-2635
Separated the two halves of the saw. Requires 2 different size torque screwdrivers. Took photo of old switch before I removed it to ensure proper wiring attachment to new piece. Reassembled
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On/ off switch broke

Ronald from Cheboygan, Michigan

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Parts Used:
23-66-2635
Opened up saw case with Torx driver
Removed wires and diode from switch
Connected wires and diode to new switch
Replaced case with Torx screws
Tested saw, works fine
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Would not always work when trigger pulled

James from CHULA VISTA, California

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
23-66-2635, 23-38-2840
Ordered new trigger AND diode.
Like 3$ more for diode Took photos before removing screws. Pretty easy pull apart after all screws removed. Took plenty of photos before removing switch and diode. Special attention to wire colors and position before replacing cover. T25 and t15? Needed. Minimum 2 inches on some screws. Easy rea lly, just take photos and take your time. Probably never have to replace again. Buy both parts. Switch and diode. One or both can be bad. Hardly worth your time to just do one. Fix it RIGHT the first time.
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No power when the switch was engaged

Bart from LA CROSSE, Wisconsin

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
23-66-2635, 23-38-2840
Removed the torx screws, and the joist hanger assembly. Replaced the switch and diode and reassembled.
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Hard to get the saw to run smoothly. It just switched on and off about 3-4 times a second and sometime run smooth

Royall from Keaau, Hawaii

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Parts Used:
23-66-2635
Removed 2 screws from bracket that holds the saw hanger on to the handle. Removed all the other screws around the perimeter of the handle housing and carefully lift the top half of the housing up and off. Unplug the 4 wires from the old switch (may want to draw a picture with to show the placement of each color wire, or take photo) and tr ansfer them over to the new switch. Place new switch back into the handle and put back together by reversing the order it came apart. When putting hanger bracket back on, besure it \"Flips\" the correct direction so that it lays down out of the way. You\'ll know if it is on wrong when it gets in your way! LOL ;-)
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Saw would not turn on.

dan from NETCONG, New Jersey

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
23-66-2635
Installed the new trigger switch.
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Crushed wire to switch...probably didnGÇÖt need new switch

Perry from FREMONT, Michigan

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver
Parts Used:
23-66-2635
Opened the case , slipped new switch in, noticed the blue wire had been crushed between case halves, removed crushed section , attached two ends together and closed up the case.
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Model Cross Reference

This part works with the following models:
ERP Number: ERP10123797
Manufacturer Part Number: 23-66-2635
Brand Model Number Description
Milwaukee 2631-20 Circular Saw - M18 Bl 7-1/4 Inch Circ Bare
Milwaukee 2730-059 Saw - Milwaukee 2730-059-(F70a) Parts
Milwaukee 2730-20 Circular Saw - Cordless M18 Fuel Circular Saw
Milwaukee 2730-21 Circular Saw - Cordless M18 Fuel Circular Saw
Milwaukee 2730-22 Saw - Milwaukee 2730-22-(F31a) Parts
Milwaukee 2731-059 Saw - Milwaukee 2731-059-(G20a) Parts
Milwaukee 2731-20 Saw - Milwaukee 2731-20-(F95a) Parts
Milwaukee 2731-21 Circular Saw - Cordless M18 Fuel 7-1/4" Circular Saw
Milwaukee 2731-22 Circular Saw - Cordless M18 Fuel 7-1/4" Circular Saw
Milwaukee 2782-20 Circular Saw - M18 Fuel Metal Circ - Bare