Question about Makita Tools 18V 1/2" Lxt Lithium - Ion Hammer Driver - Drill Kit - BHP451

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Model 6312D Makita drill wiring

How do I wire up a new switch?

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Just follow the all switch connection

Posted on May 29, 2008


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Posted on Jan 02, 2017


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My Makita 6402 drill stopped working. I press the trigger and it does not make any noise at all

You will need to have someone take it a part and see where the problem lies.
Start with the electrical plug, both the wall plug and inside the drill where the wire attaches to the switch.
Often, the switch is the problem, but the wire itself can be bad, if the cord is worn.
There is such a thing as the wire separating inside the cord.
We will hope the unit is not "toast".
God bless your efforts.

Oct 25, 2016 | Makita Drills

1 Answer

Variable speed not working, the trigger is either full on or off. speed switch 1 or 2 works

Replace the switch because a power mosfet inside is defect

650583-6 look for that switch partnumber also ferify it because this is for the model in the netherlands but most time its the same by Makita and its not to expensive will succeed to replace succes. but be careful when pulling out the wires using a thin watch screwdriver to push the unlock holes next to the connector contacts.

Nov 01, 2015 | Dewalt Makita Bhp452 18v Cordless 1/2"...

1 Answer

Makita 451 stopped working NO smoke but liights still work?

Things I've run across in my shop to check for:
1. Is power getting out of the switch to the motor. It is possible for the part that powers the light to work and not the part that goes to the motor
2. Is the armature jambed by something that doesn't belong in there so it can't turn.
3. Is the armature burned up. Check the wires for burn spots, broken wires or discoloration of the windings, they should be the color of a new penny.

May 22, 2014 | Makita 18V LXT Lithium - Ion Cordless...

1 Answer

Wiring diagrams for makita hammer drills

Go to, put your model number in the search box and the parts breakdown and owner's manual can be viewed or downloaded.

Jan 16, 2012 | Makita Drills

1 Answer

Bhp452 makita cordless drill smoking. how can i troubleshoot?

the switch or motor is wired incorrectly. These parts are polarity sensitive. The smoking I would assume is from the old switch and now the rotation is reversed. Let me know if you need more assistance.

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1 Answer

I have ordered replacement switch for my 1/2" Makita model #DP4700. Switch #651314-6. I'm confused as to rewiring the switch wires. There are 2 wires in the housing, both back, one appears to connect...

If the part is an exact replacement for what you have, what is the issue. U just replace it in the exact same way that the old switch is wired.

Sep 19, 2017 | Drills

1 Answer

I have an older basic makita cordless drill worked fine until now battery charged and it doesnt work. charged again. still nothing- except the built in light on the drill lights up weird

if the battery show good on the charger and you have a light i would check the switch. you can do a hot wire connection to check it. you need you battery and two wire connedtors. disconnect your switch and hook your battery straight to the motor. if the motor turns it is your switch. if not, that's bad, probably the motor is gone.

Aug 15, 2010 | Makita Drills

1 Answer

Why doesn't my HP 1501 Makita hammer drill work

The problem was the cord at the base of the drill. The wires were broken, cause by constant bending. After souldering the wires, the drill works perfectly.


Jul 28, 2009 | Drills

1 Answer

Makita electric drill

the header lists 2 different tools but if you give me the model number I will find a cord set for you and the wiring diagram that you need. If you also give me the area (US only) I will try and find someone local that has what you need.

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