Easy
Less than 15 minutes
This is an authentic replacement part manufactured for use with Makita drills. The switch includes the battery holder and the switch assembly. It is recommended to mark the wires when removing the old switch to track where they should go when installing the new switch. This switch is sold as an individual replacement part, please see model diagram for associative parts.
Switch Unit (reversed Wires Wi 638144-2
OEM part for: Makita
Part Number: 638144-2
$40.38
In Stock
Ships within 1 business day 
Compatibility
This Switch Unit (reversed Wires Wi will fit the following 12 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Makita
Show More Compatible ModelsThis item works with the following types of products:
- Drill Parts
- Cordless Drill Parts
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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.
The switch got stuck only on one direction (to the right only)
juan - August 31, 2021
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Power Drill
Parts Used
Open up the drill housing by removing all screws than remove the damage switch take a photo before that to make sure the connectors were installed in the same position replaced the new switch test after repair drill fix and working to factory specs (make sure to install the connectors properly if not you will have to pay or buy another one)
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Drill would not run when triggering qwitch.
Brian - June 26, 2019
Tool Type
Cordless Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers
Parts Used
1. Opened drill by removing screws.
2. Replaced switch paying careful attention connect wiring to proper connectors.
3. Reassembled drill, snapped in charged battery.
4. Tested drill. Operates like new.
2. Replaced switch paying careful attention connect wiring to proper connectors.
3. Reassembled drill, snapped in charged battery.
4. Tested drill. Operates like new.
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Cordless drill trigger switch broke
Earl - November 4, 2016
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Removed the battery
Remove the screw from the housing
Took a picture of all of the internal parts
Made a wiring diagram
Disconnected the wires from the old switch, then connected them to the new switch
Screw the housings together
Inserted the battery
Drill worked as it should
Remove the screw from the housing
Took a picture of all of the internal parts
Made a wiring diagram
Disconnected the wires from the old switch, then connected them to the new switch
Screw the housings together
Inserted the battery
Drill worked as it should
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Dropped drill. Broke trigger
Glenn - July 22, 2016
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Removed and replaced trigger switch.
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Trigger switch went out on my Makita cordless drill
Robert - April 18, 2016
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
The installation was extremely easy. Remove the screws from the housing, remove one half of the housing being careful to not let any parts fall out. Remove the wires from the old switch and connect the wires to the new switch. The switch came with a wiring caution which was a very helpful hint as to not damage the switch. My drill is back on line, thank you!
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
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.
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