Question about Black & Decker String Trimmer Cordless 12" 18V

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Black & Decker Grass Hog Electric trimmer/edger: The engine runs but the string doesn't spin.

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  • Anonymous Jun 18, 2008

    Same thing here. Haven't taken it apart yet to find solution. And this was after the plastic guard melted off after 20 minutes of trimming. Next time I get a GOOD trimmer.

  • timwalker Jun 21, 2008

    Found a Black & Decker repair shop nearby. The Grass Hog has a 2 year warranty. No need to show a receipt they can get the age by the model number. Haven't taken it in to be fixed yet but will take it next week. Keep you posted.

  • gramt Aug 09, 2008

    same problem string stops spinning

  • Anonymous Aug 10, 2008

    Engin runs but the string stops spinning after about 30 seconds, I have taken it partially apart but can't figure out how to get further. From what I can see, I suspect a broken stop or cap on that the top of the main shaft.



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Possible broken plastic part of spindle assy.

Posted on Jun 19, 2008


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I need a new spring to replace the lost one that makes the spool advance. Its a Grass hog that is a few years old. Not battery powdered, but electric. Can yoy tell me where to buy one or what size...

They have upgraded the old string heads (type 1) to a new string head (type 2). They say type 1 is no longer available. Please see part numbers 20 & 21 in this 14" Grass Hog parts breakdown diagram. The new string head is relatively inexpensive. If you don't want to get one, could I suggest you take the old spring (if you have it) and match it up with possibly a new spring at the hardware store. Sometimes you get lucky! Here is the parts diagram for it. Hope this helps!

Oct 30, 2010 | Black & Decker 14" Grass Hog Xp...

1 Answer

;How do you lengthen the string? (Have the grass

To lengthen the string:

- Turn the Grass Hog upside down
- Push in on the two release buttons on either side of the spool (they're orange)
- Pull the spool head off and spin it to release more string while you pull the string with your hand (make sure it is still fed out through the hole in the base)
- Pop the spool head back into place

Test the Grass Hog to make sure the string is not too long. If it is you'll hear it cracking against the plastic guard on the base.

May 02, 2010 | Black & Decker Cst2000 12 - Volt Cordless...

1 Answer

How to restring back and decker grass hog

For Black and Deckers: Remove cup from bottom of unit by depressing 2 detent tabs and pulling away from unit. Replace empty spool with new full one or wind on aftermarket string. Wind in direction of arrow on spool. Make sure spool is seated on rachet firmly.

Apr 11, 2010 | Black & Decker 14" Grass Hog Xp...

2 Answers

String will not advance on black and decker grass hog electric trimmer

Did you re-string it? If you did it is possible that you crossed the string over itself and it is stuck. Check that and good luck...Lee

Oct 20, 2009 | Black & Decker Grasshog 12 Inch 18 Volt...

1 Answer

Describe your Black & Decker

You can order these thru black and decker at blackand

Sep 12, 2009 | Black & Decker 14" Grass Hog Xp...

1 Answer

I don't undestand how to fix the line after it

The string is wound the wrong direction; it should be wound clockwise on the spool.


Jun 18, 2009 | Black & Decker Black and Decker & Grass...

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