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

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String Runs Out

I just got my 18v Grasshog and at first the string would advance so much it would get tangled.  I sharpened the cut-off blade and that seemed to work but now I have to replace a new spool of string after every hour of operation.  Is this normal?

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Posted on Jan 02, 2017

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  • 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

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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.
Otherwise,
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

  • 6 Answers

SOURCE: my grasshog will not advance the string and it

Take your string trimmer reel and throw it in the garbage. Go get a gater head and put it on, it will be the best thing you ever did.

Posted on Mar 31, 2010

  • 133 Answers

SOURCE: B & D auto feed string trimmer won't advance string

Is the string spool seated on the rachet correctly? If so and all is well, it is worth noting that these trimmers auto feed fuunction is problematic at best, requiring manually unwinding some line every few minutes as the unit gets older.

Posted on Apr 21, 2010

  • 3 Answers

SOURCE: ENGINE WILL NOT ENGAGE WITH SPINNING SPOOL

I had the same problem, The pully is plastic and is mostlikely melted. I took mine apart when it finally stopped working and found that the belt had broken as well. When taking it apart, there is a hidden screw under the black sticker label. Just feel for the soft spot. Also, there are screws under the black plastic embelishments.

Posted on Jun 02, 2010

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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.
Otherwise,
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!.
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