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

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B&D 18V cordless grasshog: Autofeed won't stop

The autofeed feature on my B&D 18V cordless grasshog works a bit too well: the line feeds out constantly, whether it needs to or not. I've looked at all of the places on the unit I can get to easily and nothing looks broken. The white lever under the cord spool is okay.


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  • wmsampson Jan 28, 2009

    Thanks, but I replaced the spool and it still happens.

  • Anonymous May 02, 2009

    I have the same problem. The autofeed on my cordless grasshog will not stop releasing the string. And the white lever looks OK. What can I do?

  • Anonymous May 02, 2009

    I have the same problem. The autofeed will now stop releasing the string when I use my cordelss grasshog. The white lever looks OK and I still have plenty of string on the spool. Help!



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  • 2 Answers

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Posted on Jan 02, 2017

  • 313 Answers

SOURCE: My grasshog gh600 wont feed

check out a white plastic lever at the back of the spool line. if its broken then replace it. cost of the parts around $4.00 or so. this parts controls the auto feed of the spool

Posted on Jun 26, 2008

  • 4 Answers

SOURCE: 18v cordless string trimmer will not stop feeding line

Some of the trimmers recommend a certain size line, if you have one of these that let line out as needed, the speed at which the trimmer cuts will let out line as needed. If you have too small of line the drag for the friction let-out you will spoll all the line out. Make sure the line is the right size, They come in alot of sizes, anywhere from .060" to .125" line thickness so make sure you have the right size line!

Posted on Aug 07, 2008

SOURCE: auto feed spool doesn't work

10 to 1 yours is doing what mine is, line comes out all over... I think there is a little spocket on the center shaft under the spool... When I replaced line I lost this part and know one shows this as a part on there web sites... I don't know what to do??????

Posted on Oct 13, 2008

  • 1 Answer

SOURCE: Line gets tangled in gear under feed spool

Problem solved. We noticed something was broken off a small part inside the spool holder. My husband took it to the local hardware store, and one of the employees gave him the part from a trimmer that had been returned.

Posted on Apr 07, 2009

  • 16 Answers

SOURCE: I need directions to replace string on black and

Go to home depot. look at the floor model and the replacement spools they sell there. Reverse engineer the stringing process or but a pre-loaded spool.
1. Squeeze the tabs on the side of the head of the unit to remove the spool cover.
2. remove spool.
3. place end of string in small hole in center ring of spool.
4. wide spool with string in the direction of the arrows printed on the spool. DO NOT OVERLOAD!.
5. snap string into notch on spool and cut string leaving 6" exposed.
6. thread 6" of string through hole in side of unit head, replace spool, and replace cover.
7. go cut grass.

Posted on Jul 07, 2009

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