Part Location Diagram of 638640-0 Makita Switch Cpl.
See part 5 in the diagram
( Grid squares measure 1x1 inch )

Switch Cpl. 638640-0

Manufactured by:
Makita
ERP Number:
ERP11885001
Part Number:
638640-0
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(7 rated repairs) ?

Does this part fit my model?

Need help finding your model number?

Product Description

?

This is a genuine manufacturer-approved replacement switch, it is specially designed for Makita backpack blowers. It is the component of the tool which allows a user to turn the unit on and off, over time components may wear out and begin to fail eventually requiring a replacement. Keep in mind this high-quality plastic body switch is sold individually.

Frequently Purchased Together

?

Troubleshooting

This part works with the following brands:
  • Makita
This part works with the following products:
  • Leaf Blower / Vacuum
Part# 638640-0 replaces these:
665-50010-00, 6655001000,

Customer Part Reviews

?
5.0
Average Rating (out of 5):
★★★★★
★★★★★
(5 Reviews)
Click to filter by ratings:
  • 5 stars
    5
  • 4 stars
    0
  • 3 stars
    0
  • 2 stars
    0
  • 1 star
    0
  • 1
Sort by:  
Sorry, we couldn't find any existing reviews that matched. Try using some different or simpler keywords.

Questions & Answers

?

Our customer Service team is at the ready daily to answer your part and product questions.

We're sorry, but our Q&A experts are temporarily unavailable.
Please check back later if you still haven't found the answer you need.

Ask our Team

We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.

Does this fit my product?

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 

30 - 60 mins 

(7 rated repairs) ?
  • 1
Sort by:  
Sorry, we couldn't find any existing installation instruction that matched.

Broken switch plastic slide

Raymond from Alpharetta, Georgia

3 of 3 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
638640-0
Removed the screws on the side body of the blower and lifted off the engine housing to allow switch body and slide to be removed. When I saw how far I had to reach to replace the full switch I simply replaced the red plastic slide and re-assembled the unit. Has worked well so far.
Did you find this story helpful?
Thank you for voting!

Kill switch stopped working

Robert from Gladwin, Michigan

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
638640-0
Separate the blower in half with Phillips screwdriver fed the kill switch wires down the handle and reattached with push on electrical ends
Did you find this story helpful?
Thank you for voting!

broken on off switch

Donald from Green Valley, Arizona

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
638640-0
removed broken part and replaced it from new switch
Did you find this story helpful?
Thank you for voting!

smashed the kill switch. blower wouldn\'t shut off.

James from Simi Valley, 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:
638640-0
Disassemble the complete body of the blower to get to the kill switch. remove bad switch. With new switch in place, reassemble the body the blower. Start blower to test my work. blower turn off as before. Problem solved... piece of cake.. thanks.
Did you find this story helpful?
Thank you for voting!

smashed the kill switch. blower wouldn\'t shut off.

James from Simi Valley, California

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
638640-0
I dismantled outer body of the blower to get to the switch. Must remove pull start assy. Open top of the handle with screwdriver find switch remove switch from handle housing unplug the two wires to the old switch discard it.. reassemble in reverse order making sure switch wire don\'t get pinched and throttle cable is fine. put body housi ng back together and pull start assy. tighten all fasteners and make sure pullstart assy works. Check work by starting and stopping blower..
Did you find this story helpful?
Thank you for voting!

Would not start

Doug from North Bend, Washington

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Screw drivers
Parts Used:
638640-0
After replacing the possible suspects, full filter, spark plug the blower still wouldn\'t start. I then found this Replacement Parts.com website and it stated \"29% of the time the problem is the \"Kill Switch\" so I ordered and installed a new Kill Switch and it started on the first pull.....Yay! You can gain access to the Kill Switch by removing the housing but un connecting and reconnecting the wires took a little MacGyvering. Good Luck
Did you find this story helpful?
Thank you for voting!

Drop blower and broke the on off switch

Paul from Paducah, Kentucky

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Screw drivers, Wrench (Adjustable)
Parts Used:
638640-0
Had to remove all housing screws
Remove air filter cover
Install switch in handle
Did you find this story helpful?
Thank you for voting!
  • 1