Makita cordless drill 6011D

It sounds as if the brushes may be bad / burnt / chipped. If you fire up the drill in a dimly lit area you will likely see sparks inside the unit. The smell is the ozone that the sparking creates.

I have an 18 volt DeWalt that sparks and smells like something inside is cooking if I use it. I use that drill occasionally and every time I do I think that sooner or later it is going to give up the ghost permanently.

Now, if I had a 120 volt plug-in-the-wall outlet drill that was doing that I'd deep six the drill and get a new one. They are cheap enough and you really don't want to be dealing with sparking with an item that could short circuit and cause some real harm or damage..

You could get it repaired, but that wouldn't be cost effective. Take a wire cutters, cut off the plug from the wire and discard.

The one thing I would not do with the drill is sell it at a yard sale. It just wouldn't very honest to do that.

good luck.

Here is the schematic for you: http://www.toolpartsdirect.com/cgi-bin/schematic.cgi/makita/6011D

If it is running just fine and meets your needs I would just keep on using it.