How to correctly wind the line for the trimmer on the grass trimmer: step-by-step guide and video instructions

A beautiful lawn can only look really well kept if you regularly cut the grass. Grass trimmer is best suited for processing difficult areas. Sooner or later any owner of the machine will face the problem of how to wind the line for the trimmer on the spool, because the wrong actions can not only worsen the quality of mowing, but also withdraw the equipment from service. Today in the review Homius we will tell you about all the ways and nuances of replacing the fishing line and the peculiarities of the choice of consumable material.

Lawn trimmers are great for mowing small or difficult spots like around hedges, between seedbeds and along paths. Today, manufacturers produce a large variety of gasoline, electric and battery-powered models, which can be selected according to any requirements of owners.

A trimmer line is used as the cutting element of the grass trimmer. Sooner or later in the process of work its length will run out, and then the owner will face the question of how to properly replace and fasten the thread, tucked into the removable spool.

How to wind a line for a trimmer on a grass trimmer

Winding profiles (taper)

The thread on the bobbin is wound differently for different models of bobbins. Cylindrical and tapered winding methods are used in quality products. A trimmer line laid in profile forms an even trimmer line. With a cylindrical winding, this line for the trimmer is straight, parallel to the bobbin, with a cone. sloping.

Straight taper tapers to the front of the bobbin, inverse taper expands. Straight taper reduces line friction. Reverse type of laying reduces chance of accidental line drop.

There is also a third type of winding. chaotic. Usually used in cheap Chinese fishing rods. And if such winding can still be tolerated, using a conventional line for the trimmer, then you should refuse to use a cord in such a spool. Bad casts, “beards”, hooks and tangles are guaranteed. This leads to failures in the course of fishing, and can also spoil the mood of every fisherman.

How to correctly wind a line for a trimmer on a spool? Figuring it out.

So first we unscrew the bait. This should be done by turning the reel to the right side. Here we have in our hands a drum with the remains of the old line. Open it up. The cover is usually closed by a catch, which can be opened by sliding the screwdriver through the holes and pushing it slightly. Or press the latch and turn the lid in the direction of the arrow. At the same time, the lid itself should be held, t.ะบ. reels with automatic line feeder have a spring that can throw out all the internal parts of the reel if it becomes loose. Carefully take out the spool, remove pieces of fishing line.

Now we need to take 5 meters of new fishing line and fold in half (to find the middle). In the middle part of the spool there is a notch (in some designs. a hole), for which you need to hook our line for the trimmer. There is also an arrow on the spool that shows the winding direction. An important detail. if the spool has two compartments, you should wind one half of the line in one direction, and the other half in the other direction. Finishing winding, you need to leave 15-20 cm of fishing line free. On the top ring of the spool there are also two notches, through which you need to pass these loose ends. With the winding itself, we have coped.

The last step of the line changing process is the reel’s assembly. First you must install the spring and washers in their place. Then, holding the spool with one hand, the other hand should pass the ends of the line through the appropriate holes on the sides of the nozzle. After that, set the spool in its place, pulling the line for the trimmer and trying not to displace the spring. When all the internal elements of the nozzle have taken their places it is possible to close the reel with the cover. Just take a little effort to press the catches into position. Voila! The mowing head is ready for use!

Algorithm of winding the line

The order of winding the line depends on the type of spool. with one or two tendrils, as well as with automatic cord charging.

On single-tendril spool

It is easy to wind the line on a single-tag reel. In such designs, depending on the brand of grass trimmer, fits from two to five meters of cord. The edge of the line in the bobbin should be tucked into a special hole or groove, then the line is reeled in the opposite direction to the rotation of the spool during operation.

Tip! To understand in what direction to wind the thread, you should look at the body of the bobbin. usually on it are made marks indicating the direction of movement of the spool when working.

After the line for the trimmer is wound, you need to leave a small piece (15-30 cm), put it through the bobbin outlet and reassemble the head.

On a spool with two tendrils

In this type of bobbins you need to inspect the inside of the spool and determine the number of grooves for winding the cord provided in it.

Important! If the spool has one groove, then both tendrils must be wound in a common groove, if two. then on separate tracks.

For reeling it is required to take a piece of fishing line of two to three meters in length. For single-groove spools, thread the trimmer line through the through hole, align the whiskers, align it and wind it on the spool in the opposite direction to its rotation when working. If there are fixing grooves, you need to put the ends of the cord in them, then pull them into the outlet hole, then close the spool and put it in its previous place.

For double-groove bobbins the difference is that the string section should be folded in half. Next, you need to charge the middle of the bend in the groove between the grooves, and then wind each of the pieces of line on its track, fix the tendrils and reassemble the bobbin as well as a bobbin with a single track.

On a trimmer head with automatic threading

For heads with automatic threading, all you need to do is start and clamp the edges of the line, and the tool will do further winding on its own when you turn it on. It is impossible to make a mistake here, because the spool itself recognizes how the tendrils should be located.

For your information! The advantages of trimmers with this head include the convenience of laying the cord, and the disadvantages. expensive and difficult to repair.


First of all, to wind the fishing line requires removing the spool (bobbin, bobbin) from the grass trimmer. the specific actions will depend on the complexity of the configuration and type of the product itself:

  • small electric grass trimmers with the working arrangement of the motor and spool in the bottom usually have side keys on both sides of the reel. By simultaneously pressing them, the upper part of the spool together with the internal contents for winding the fishing line is detached, while the lower part remains on the trimmer. It is desirable to disassemble the bobbin on a flat, smooth place, so that the spring included in the design does not pop out and lost;
  • electric and gasoline grass trimmers with a curved boom without the possibility of installing a knife, as a rule, have a spool with a special wingnut: in such designs, one hand should hold the bobbin in a fixed position, and the other counterclockwise rotate the fixing bobbin on the boom nut, wingnut. After loosening the nut, the entire bobbin can be removed.
  • Electric and petrol grass trimmers with the possibility of installing a blade on a straight shaft (e.g. STIHL grass trimmers) have a hole under the reel. To immobilize the bar, a screwdriver or other suitable object is inserted into this hole and a slow spinning motion achieves a mutual arrangement where the screwdriver enters the hole and the bobbin is locked in place. The spool body is then turned clockwise (with the left thread) and removed from the grass trimmer.

For the second and third cases, the reels, depending on the design, are disassembled in different ways. Unscrew the wing bolts of the spools with the wing bolts, press the latch latches, and one part of the spool is released from the other part of the spool. If the bobbin halves are connected by threads, it is enough to turn them by hand in opposite directions until they are completely unscrewed.

What to do:

Before you disassemble the trimmer head is necessary to shut off the engine gasoline trimmer for grass or unplugged if the trimmer for grass electric. Turn the grass trimmer upside down, placing it on the handlebars so that the trimmer head “looks” up for easy disassembly. Press the latches on the sides of the trimmer head and remove the cover.

Remove the drum (spool) from the trimmer head and remove any residual fishing line from it (there may be a piece of fishing line remaining there) and clean the cover, body and spool of soil and grass.

Buy your trimmer line for your trimmer head at your dealer’s service center, in a store, or at the market. The diameter of the line, the shape of its section, and the recommended brand cm. in your grass trimmer’s owner’s manual and at the price level.

Measure and cut the correct length of line from the coil you purchased (see your trimmer’s. User manual for your trimmer, usually 15 m). Find the middle of the fishing line by folding it in half.

With the loop formed, hook the line for the trimmer to the notch on the inside of the drum and wrap first one half of the line on one side of the drum, and then the other half of the line on the other side of the drum. To prevent the ends of the wound fishing line from unwinding, secure them by inserting them into the notches on the edges of the trimmer head drum.

Insert the reel into the previously removed cover of the trimmer head and pull the ends of the fishing line through the holes provided in the cover (these holes usually have a metal trim, because during the work experience strong shock and abrasion effects from chopping the grass and constantly moving lines). Insert the cover with the wound drum on the base of the trimmer head and snap.

Pull the line ends with both hands as far as they will go. If the working ends of the line will be longer than usual, they will be cut during the first turns by the cutting blade, which is usually located on the plastic blade guard of the grass trimmer.

What line to choose for a trimmer

Before you stock up on this material to put in your grass trimmer, you need to decide on the. After all, conventional so-called round line for trimmers is not the only type that exists. How to choose the most suitable? First you need to determine the working conditions.

Choosing by type. A line for trimmers with a circular cross-section is the most common. It fits on any reel, with very few exceptions. This type of consumable is suitable for mowing fresh, succulent grass. But it may not be able to mow what are known as dead wood anymore. Attempts to mow shrubs with this thread are pointless to mention.

In addition to the usual type, there are others that have sharp edges. They are usually made in a “star” or “square” pattern. The presence of sharp edges is the main feature and the key difference of these threads.

It is because of this feature, the threads of these types are able to mow dry weeds. But sharp-edged filaments are not without disadvantages, the main of which are fast wear and tear and durability that is noticeably inferior to the round type.

In addition to the already mentioned types of lines, there are other interesting and common varieties. Particularly among them can be noted fishing lines, inside which a metal wire is stretched. Threads of this type are often used in tools that run on gasoline and have an engine with more than one and a half horsepower.

Threads with a metal core come in both round sections and with sharp edges. Regardless of the section type, such yarns are the best way to overcome hard-to-cut plants. Filaments of this type can easily cut not only dry grass, but even small bushes.

Filaments with wire inside compare favorably to other types of consumables by their incredible durability. But unfortunately, this feature has more than a noticeable effect on the price of this type. The cost of filaments with a core is much higher than the cost of other types of filaments.

Choice of thickness

In addition, special attention should be paid to the thickness of the consumable material. For mowing young grass a thread with a diameter of one and a half millimeters is good. The larger the diameter of the thread, the drier and rougher the weeds it can handle.

There is a “but” when choosing a line by thickness. It is important not just to assess the material capabilities, but also take into account the peculiarities of the grass trimmer. It is necessary to look in the user manual, which comes with the tool, and find information about the requirements for the cutting element.

Using the wrong thread can lead to tool failure. Using too thick a thread will result in overloading the engine of the device. And the use of too thin thread will increase the wear and tear of the torque mechanism by many times.

That’s why the choice of consumable material should be as responsible as the threading of the grass trimmer. When a suitable line for the trimmer is found and purchased, you can begin to consider how to wind it on the spool.

If you have a summer cottage or a large plot of land near your detached house or cottage, then you should use a lawn mower for easy removal of grass and weeds. In case you are thinking of choosing an electric lawnmower or a gasoline mower, then click here and you will find comparative characteristics of different models.

Over time, the trimmer line on the mower wears out and needs to be replaced. this can be done yourself. Choose this polyethylene thread depending on the model of the mower. It is also worth keeping an eye on the other parts of the machine, here for example you will find information about the Craftsman mower blades which also wear out and can lead to irreversible consequences.

The design of the spool, in which the line for the trimmer is inserted, is very simple. But it differs depending on whether the spool works with one or two tendrils of thread. It is important to follow safety precautions while changing the fishing line in the spool.

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