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How do I tighten the head of the line trimmer

Head loose

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Without the make and model I can only suggest a general answer.

The gearhead of most trimmers will have a locking hole where a small metal shaft(rod) can be inserted so these heads can removed and installed. Look for over the gearhead for such a hole and give it a try. The trimmer head can be either left hand or right hand threaded; just depends on the direction of rotation.

Posted on Nov 17, 2014


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Posted on Jan 02, 2017

  • 15 Answers

SOURCE: how do you change a head on a poulan pro trimmer

Try putting a wrench on the nut that is above the head to hold it steady. Then try turning the head off being aware that the stud the head spins on to has left handed thread on it.

Posted on Apr 23, 2009

  • 134 Answers

SOURCE: remove the trimmer head from shaft

The entire trimmer assembly (from the gearbox forward) will slide off of the drive shaft cover. On the side of the aluminum gearbox assembly, you will find a single screw. This is the "anti-rotation screw" (do not lose this). Then remove the small (approximately 1" diameter) clamp from the end of the gear box assembly and simply pull the entire cutting assembly off of the shaft.

If you just want to remove the trimmer bump head assembly, then you will need to lock the bump head assembly to prevent rotation while you are working. If you purchased this new, then there should be a small metal rod included with your accessories. This will fit in a small hole in the base of the gear box assembly 791-182193 and prevents the trimmer head from rotating.

Then proceed to remove the following items:

791-180814B (replaces 791-180814) Bump Head Knob Assembly
791-147495 Inner Reel (hold the trimmer string)
791-610636B (replaces 791-610636) Spring
791-612026 Retainer (be careful removing this so you do not inadvertently destroy it). If you intend to reuse the trimmer head. If not, then hack, pry, stab, etc.. until you mangle it enough to remove.
791-683301 Outer Spool & Eyelet Assembly should now slide out leaving only 791-612483
Spool Shaft which I will assume that you want to keep.

I replaced my entire string head assembly a couple of years ago (and subsequently misplaced it and am in fact wanting to purchase one) and replaced it with a grass-gater or similar.

I hope this helps.

Posted on Jul 19, 2009

  • 86 Answers

SOURCE: just got new U Turn Trimmer head. It has line

push down and turn until it comes back, on that spot that is all the way in, before it comes back up, pull up on it ?? The release is located where the the spool is all the way down and getting the spool to "hang up" on that spot allows it to release...because it can't when running makes it a perfect location

Posted on Apr 18, 2010

  • 1 Answer

SOURCE: Cannot disassemble Troy-bilt trimmer head

There is a round, rotary black part between the metal piece to which the cutting head attaches and the outer plastic seat of the cutting head. There are two square slots, each about a quarter inch wide, on opposites sides of the black piece. Slide an Allen wrench or something similar firmly into the slot. Holding the Allen wrench in a stable position, turn the outer plastic ring of the cutting head (it has scalloped edges that can be gripped firmly) counter clockwise to unscrew the cutting head from the bolt on which it is mounted. Be careful with the tool (e.g. Allen wrench) used to hold the black piece steady, as it is plastic and could be damaged by the edge of the tool.

Posted on May 04, 2011

  • 1 Answer

SOURCE: How can I remove Echo 230 SRM trimmer head?

I can't get the trimmer head off echo 225 I insert the tool in the slot and turn the head clock wise but will not unscrew it just clicks

Posted on Jul 28, 2011

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1 Answer

I have a Poulan PP025. It runs fine; good acceleration and idle, several hours of great cutting; then the weed-eater suddenly ran as if out of balance, the head then stopped spinning. Any ideas?

curved shaft trimmers use a flex drive in side the case so that it can drive around the bend of the case
they are held in line with bushes spaced along the tube and this prevents the flex drive from binding back over itself
from your description of the problem, pull that flex drive out of the case and check for signs that it has a problem
the problem with bent shafts is that they will not handle any sort of a load and therefor are not suitable for heavy growth, heavy trimmer line or any metal/fixed attachments
the heat in the case will be from the flex drive rubbing on the inside of the case

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Shaft connection bad,head slips under acceleration

Slacken off the 'tube shaft' retaining clamps at eithr end of the drive tube. Push tube back in towards the engine and resit the shaft and tighten clamp screws, repeat the same with the gear head on the other end.

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Replace trimmer line

The steps for replacing line in a single line trimmer head are virtually the same for many trimmer head types, like double line trimmer heads.
1. Remove the Trimmer Head Spool
Removing the spool is the first step in replacing trimmer line in any conventional trimmer head, but trimmer head spools can disassemble in different ways.
The trimmer head pictured above and below disassembles by simply unscrewing the knob around its arbor bolt. Other trimmer heads can use press tab and other twisting styles for disassembly.
2. Insert Trimmer Line and Wind the Line
Single line trimmer heads have just one channel in their spools for winding line. The channel will have a hole in it somewhere that keeps the line in place as it is wound around the spool. Insert one end of the trimmer line in the hole.
Depending on the trimmer head, it might be helpful to bend a small portion of the cutting line at an angle before inserting it in the starter hole. Also, cutting the line at an angle can help this first step on some trimmer heads.
Of course, it is also important to make sure that the replacement line matches the diameter specification of the trimmer head before beginning. Once the line is started correctly in the channel hole, you're ready to wind. Most trimmer heads will indicated the correct winding direction right on the spool somewhere.
It's also important to wind the line carefully, keeping it in neat rows as much as possible. The line will have a much higher chance to feed incorrectly during trimmer use if it suffers from sloppy winding.
3. Snap the Line into its Retaining Notch
A conventional trimmer head will have a retainer on its spool. Snap the end of the trimmer line into the retainer after it is wound around the spool. The retainer will hold the line in place as the spool is replaced in the trimmer head assembly.
4. Replace the Trimmer Head Spool
With the cutting line held in place, the spool is ready to be replaced in the trimmer head assembly.
First feed the extra trimmer line through the trimmer head eyelet. Make sure to release the line from the retainer before completely securing the spool into position.
Replace any knobs, bolts, or other trimmer head pieces removed during disassembly.
Your single line trimmer line is now reloaded, and your trimmer should be ready to get back to work.
Although there are many steps to reloading line the conventional way, a little practice and familiarity with your trimmer will speed the process up a great deal. Once you're up to speed, reloading trimmer line this way can take less than five minutes.
If you want to know about the double line replacement, please click this

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How do I remove the cutting head on my homelite HLT=15

Here is a diagram of it. It is reverse threaded so you have to turn it like you was tightening it to loosen it. Clockwise looking at it from the bottom of the head. But there is a clutch that will let the whole thing turne. The best way is to remove the shaft from the weedeater and hold the shaft with some vice grips. Or you may be able to hold it right above the head, before the shaft tube.

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Can't find the button on the side of the head assembly need more info How do change the line? can not get head off

It is reverse threaded so you have to turn it like you was tightening it to loosen it. Clockwise looking at it from the bottom of the head. But there is a clutch that will let the whole thing turne. The best way is to remove the shaft from the weedeater and hold the shaft with some vice grips. Or you may be able to hold it right above the head, before the shaft tube.

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2 Answers

I have a Homelite 25cc trimmer. It will crank but will not run but a few seconds? Have cleaned Carberator and replaced Gas.

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