Question about Black & Decker Grasshog 12 Inch 18 Volt Cordless String Trimmer/Edger NST2018

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The string keeps breaking inside the spool of my automatic feed

I have used my new B & D 13-inch 4.4 amp aurtomatic string trimmer and edger #ST7700 for 45 minutes. It worked great for 30 minutes. Now the string breaks every 20 seconds and I have to take it apart and rethread the line. This is no good. What can I do?

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Posted on Jan 02, 2017

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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: 12 volt grass trimmer/string breaking

Just a reminder, do not use cordless string trimmer as heavy work.

Posted on Aug 30, 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

  • 133 Answers

SOURCE: GL 320 String trimmer - nylon string keeps breaking

It sounds like the sting is wound backwards. Try winding a short piece in the opposite direction. If it is backwards, it will be gone in a hurry.

Posted on Apr 20, 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

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1 Answer

I properly replaced the line spool but it won't feed automatically.


After you replaced your string in the trimmer and fed it through the hole in the plastic casing in which the spool fits into, did you pull the string until you hear a click? The click locks the string in, then you can bump and feed as usual. Otherwise it won't feed normally.

Aug 13, 2010 | Black & Decker Grasshog 12 Inch 18 Volt...

1 Answer

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.

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There is a rachet mechanism at the bottom of the spool. make sure the spool is seated fully. Also make sure the string isn't wound too tight or it will stick and not advance.

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If it is a duel line trimmer then:

Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position.

If it is a single line trimmer, just wind a single piece of string clockwise onto spool.

Jim

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If it is a duel line trimmer then:

Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position.

If it is a single line trimmer, just wind a single piece of string clockwise onto spool.

Jim

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1 Answer

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If it is a duel line trimmer then:

Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position.

If it is a single line trimmer, just wind a single piece of string clockwise onto spool.

Jim

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1 Answer

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Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position.

Jim

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Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position.

Jim

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Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position. Put cap on and GO CRAZY!

Jim

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Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position. Put cap on and GO CRAZY!

Jim

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