Can't get head off trimmer

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  #1  
Old 04-22-15, 08:35 AM
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Can't get head off trimmer

I've got an unknown manufacturer trimmer and I would like to replace the head on it because it's damaged. I can't really see a way to get into the thing to get the head off, aside from a small hole in the side and what looks like teeth in there. I've tried sticking a screwdriver in there but it still looks like it's spinning free. Any suggestions?
 
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  #2  
Old 04-22-15, 08:37 AM
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Stick a Allen wrench or screw driver in the hole and turn the head while gently pushing the tool into the hole. You should feel it drop into a hole and the head will no longer turn. Now that the head is locked in place turn it in the opposite direction it goes when running and it should spin off like a nut on a bolt.
 
  #3  
Old 04-22-15, 12:25 PM
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And you are replacing it with a unknown head?? Make sure the thread size, pitch and direction is the same on the replacement as it is on the original.
 
  #4  
Old 04-27-15, 07:26 AM
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Ok I got more info.. It's a John Deere. There's a slot to stick something but I've put a light in there and it's just teeth, not a hole to stick something in. Ideas?
 
  #5  
Old 04-27-15, 07:39 AM
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PD, " Now that the head is locked in place turn it in the opposite direction it goes when running and it should spin off " wouldn't that tighten it? Once the shaft is locked, you turn the head in the same direction it normally rotates to take it off. Or I'm lost again .

Bud

I'm also slow .
Can you post a picture?
 

Last edited by Bud9051; 04-27-15 at 07:41 AM. Reason: addition
  #6  
Old 04-27-15, 08:07 AM
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IE I can't get the shaft to stop spinning.
 
  #7  
Old 04-27-15, 08:28 AM
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Here is a link for pictures:
http://www.doityourself.com/forum/el...rt-images.html

If yours is a screw on type, then there should be a way to lock the shaft, usually a hole on the head as described. Some tools will have a button to do the same, but we can't see what you have.

Bud
 
  #8  
Old 04-27-15, 08:59 AM
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Here's a pic of said hole. You can kind of see the teeth but that's all I have.Name:  IMAG0058.jpg
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Size:  31.5 KB
 
  #9  
Old 04-27-15, 09:41 AM
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Not at all like anything I have owned . Is there a matching notch for the one on the right side of the picture. If there is another notch on the other side that might be spanner points that allow a tool to grab the housing.

Maybe others recognize that head?

Bud
 
  #10  
Old 04-27-15, 09:41 AM
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Here is a link to some John Deere instructions. But you basically stick something in that slot to engage the teeth to prevent the shaft from rotating. Then you turn the head in the opposite direction it goes when the machine is running.
 
  #11  
Old 04-27-15, 10:44 AM
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That's what I figured but I have tried screwdrivers, allen wrenches, punches, etc but it still spins.
 
  #12  
Old 04-27-15, 11:13 AM
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Stop listening to me. I've been saying to turn the head in the wrong direction. Turn it in the direction it rotates when running. That might help.

I've also looked at parts diagrams and it appears there are John Deere's where the head is bolted on. Remove the center "bump" button on the string trimmer head and look for a nut inside. It looks like you should be able to hold the head and loosen the nut to remove the head.
 
  #13  
Old 04-27-15, 01:08 PM
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The problem is I can't get it to stop spinning no matter what I do.
 
  #14  
Old 04-27-15, 01:55 PM
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So do I turn right or left to loosen it?
 
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Old 04-27-15, 02:34 PM
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Most often it is a left hand nut, so turn it right facing the head. Have you found the detent that will hold it still, yet?
 
  #16  
Old 04-27-15, 03:00 PM
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Head

I see what looks like a slot at the top end of the head next to the gearbox. Is there a removable snap ring in that slot?
 
  #17  
Old 04-27-15, 05:40 PM
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No there isn't a snap ring in there.
 
  #18  
Old 04-28-15, 08:03 AM
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I don't think that there is one. It's just a toothed gear in there.
 
  #19  
Old 04-28-15, 08:22 AM
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Did you take the face and bump button off the trimmer head to see if there is a nut or bolt to remove?
 
  #20  
Old 04-28-15, 08:23 AM
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There is no face bump bottom to remove.
 
  #21  
Old 04-28-15, 08:47 AM
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Did some searching using the term fixed line trimmers and found a "pivotrim" replacement head that looks similar to what you show.
PivoTrim? | Official Site
In which case, that could be a replacement head used on almost any brand machine. Pivotrim apparently doesn't make trimmers, just their replacement head.

If that is indeed the replacement head described all over the internet (many links) then, being universal it should install as has been described. Trick is still finding out how to lock the shaft.

Perhaps, if you post a picture of the machine we might be able to identify the brand and then go to their head assembly.

Bud
 
  #22  
Old 04-29-15, 02:24 PM
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As I said, it's a John Deere trimmer head. It is being connected to a Ryobi power head and had been working.

What if I held that square cable with vise grips and tried turning it?
 
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