Part Location Diagram of 638605-2 Makita Switch Unit
See part 20 in the diagram
( Grid squares measure 1x1 inch )

Switch Unit 638605-2

Manufactured by:
Makita
ERP Number:
ERP10153305
Part Number:
638605-2
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

15 - 30 mins 

(3 rated repairs) ?

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Product Description

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This genuine manufacturer-sourced component which is specially made for use with Makita screwdrivers. It is the part of the tool handling on/off operations, unfortunately, over time it may wear out and begin to fail eventually requiring a replacement. Keep in mind this high-quality plastic body switch is sold individually. Please make sure to check the appropriate diagrams of your model for the correct location and application of this part.

Troubleshooting

This part works with the following brands:
  • Makita
This part works with the following products:
  • Cordless Drill
  • Electric Drill
  • Screwdriver
  • Drill

Customer Part Reviews

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5.0
Average Rating (out of 5):
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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.

A Bit Difficult 

15 - 30 mins 

(3 rated repairs) ?
  • 1
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Switch was not operating correctly and not easily depressed

Matthew from Wauconda, Illinois

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
638605-2
Opened up the screw driver and removed the switch assembly (took pictures first). Connected the new switch wires and put it back together making sure that it looked just like the pictures I took. I cleaned the entire unit and blew out any residual dust with compressed air.

Be careful of the tiny leaf spring that sits in the left side of the front housing. This can easily fall out and get lost. It puts tension on the clutch dial keeps it in position after selecting the torque setting.
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Forward/Reverse switch unit went bad. Electric screwdriver would only go in a single direction

David from San Angelo , Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
638605-2
Disassembled unit.
Removed faulty switch assembly.
Replaced with new assembly.
Reassembled unit.
Installed rechargeable battery.
Tested unit.
Success
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Switch sticks in one direction or the other.

Greg from Cerritos, California

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
638605-2
Remove casing screws from the cordless screwdriver (Pay attention to screw sizes, some are short and some are long for where they go). Their are a couple of connectors that need to be removed
Removed old switch very carefully and pay attention how you disassembly the cordless screwdriver.
Note: The slide lever (The lever that locks the forward and revers switch) does not come with the new switch assembly and must be removed from the old switch. You must lift the slide lever off from the side ( you may need a small screwdriver) to lift to get it to come off the old switch assembly, be careful not to break the lever, It is plastic. Install the slide lever before installing the switch into the cordless screwdriver.
In stall the switch assembly into the cordless screwdriver. and revers the procedure to put it back together.

I hope this is of help.
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