How to charge the grass trimmer bobbin

How to properly wind a line for a trimmer for grass trimmer: step-by-step guide and video instructions

A beautiful lawn will look really well-maintained only if you regularly mow the grass. A grass trimmer is best for treating difficult areas. Any owner of the unit sooner or later will face the problem of how to wind the line for the trimmer on the spool, because from the wrong actions can not only worsen the quality of mowing, but also bring the equipment out of operation. Today in the review Homius we will tell you about all the ways and nuances of changing the fishing line and the peculiarities of the choice of consumable material.

Grass trimmer is convenient to use for mowing small or difficult areas, such as near hedges, between beds and along paths. Today, manufacturers produce a large variety of gasoline, electric and battery-powered models, which can be selected for any needs of owners.

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

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

What to consider when choosing a fishing line

Before inserting and fixing the line for the trimmer in the removable grass trimmer spool, it is important to choose the right material.

Rating of the best models of gasoline trimmer for grass. Overview of manufacturers and models, as well as useful tips from experts, considered in this review will help in the difficult choice among the many models of devices.


Before you put a grass trimmer line on your trimmer, you need to pay attention to the cross-section of the cord:

  • Cord with a circular cross section. this is the most common option. They mow the grass perfectly, even in difficult areas;
  • line for trimmer with a spiral section is suitable for thin grass. It is not very durable and is not suitable for old thickets;
  • cord with jagged and sharp edges are chosen for mowing weeds;
  • line for trimmer with a variety of geometric sections will help mow the lawn more evenly, but the strength of the consumable material is not high.

Important! The most wear-resistant consumable material is a two-piece trimmer line with a round section, reinforced on the inside.

The owner of the brushcutter should know that it is categorically impossible to use wire made of metal, fishing line and a variety of strings.

Rating of the best electric trimmers for grass. In this review, we will analyze the criteria for selecting an electric trimmer, technical characteristics, as well as the most popular models and brands according to consumer reviews.


Before you wind the thread on the grass trimmer spool, you should pay attention to its size. The most often used line for trimmer with a cross section of 2 mm.

You can find the right diameter in the following ways:

  • Consult the manufacturer’s instructions for your trimmer.
  • Often manufacturers place cross-sectional information on the bobbin.
  • The section of the cord must fit the diameter of the hole in the reel.

Important! The thicker the thread will be wound, the tougher the grass it will be able to mow.

Features of trimmer application

the grass trimmer that mows grass with a fishing line can be used near: houses and other buildings, fences and hedges, trees and bushes, beds and flowerbeds, row-spacing on the garden plot.

Such a convenient, and most importantly, effective device as a grass trimmer exists in several variations:

As is clear from the names, the types of grass trimmer noticeably differ from one another. But regardless of the type of this tool, its cutting element may be a trimmer line. Of course, the grass trimmer line tucked into the grass trimmer reel is not endless. And sooner or later you will need to replace it with a new one.

Consumption of fishing line directly depends on the frequency of use of the device and the scale of the work performed. The more grass is mowed and the more often it is trimmed with the grass trimmer, the more active the trimmer line is consumed in it. And, accordingly, the faster it will run out. This raises the question: how to tuck the line for the trimmer into the grass trimmer reel?

Not everyone knows the answer to this question. And after all, the winding of the line on the spool plays an important role in the work of the grass trimmer. In order for the device to function properly, it is very important to properly wind the new line for the trimmer on the spool. On how to change the line for the trimmer on the trimmer, and will be discussed in this article.

What line to choose for the trimmer

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

Choice by type. Round line is the most common trimmer line. It will fit any reel, with very few exceptions. This type of consumable material is suitable for mowing fresh, juicy grass. But it might not be able to mow what are known as dead wood. It is pointless to even mention attempts to mow bushes with this thread.

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

It is thanks to this feature that these types of threads are able to mow dry weeds. But pointed threads are not without disadvantages, the main of which can be called a rapid wear and tear, which is noticeably inferior to the round type.

In addition to the already mentioned types of lines, there are other interesting and frequently encountered 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 more powerful than one and a half horsepower.

Yarns with a metallic core come in both circular and sharp-edged versions. Regardless of the cross section type, these types of filaments are the best for overcoming hard-to-mow plants. Threads belonging to this type, easily mow not only dry grass, but also even small bushes.

Read more:  Which Fishing Line Is Suitable For Stihl Trimmer

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

Choosing by thickness

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

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

The use of unsuitable thread can lead to the failure of the tool. Using too thick thread will overload the motor of the device. And using too fine a thread will increase the wear on the torque mechanism many times over.

That’s why the choice of consumable material should be approached with no less responsibility than its threading into the grass trimmer. When a suitable line for the trimmer is found and purchased, you can proceed to consider how to wind it on the spool.

Removing and disassembling the spool

In order to correctly wind the line for the trimmer on the grass trimmer spool, you need to familiarize yourself with the structure of the trimmer head. It consists of a protective cover, a bobbin with thread, a housing cover, and a spring, which is present only in some devices.

Before proceeding to disassemble the spool, it is necessary to completely turn off / disconnect the device. In this case, the way of carrying out the work directly depends on the type of head. The first option is to carry out the following actions:

  • The user presses the latches located on both sides of the cover.
  • After removing the cover, the bobbin is removed. Some models may have a spring that should also be removed.
  • In the center of the housing is a screw, which should be unscrewed with a normal screwdriver.
  • When the fastener is removed, it remains to remove the reducer from the shaft, gently rocking the body of the product.

The second option for removing the spool for filling the fishing line in the grass trimmer is to screw the head on the gear shaft. For this procedure, many devices are equipped with a hole into which the tool can be inserted. When the screwdriver is inserted, the user need only take hold of the product body and twist it clockwise. It is noteworthy that this method, unlike the previously described method, is characterized by the simplicity of execution.

Spooling a fishing line

Inserting the line for the trimmer into the grass trimmer is not difficult. To carry out this operation, it is necessary to follow a simple algorithm of actions. The first step is to determine how much consumable material is needed. To make its calculations, you need to wind the line for the trimmer on the bobbin so that the resulting coil would be less than or equal to the diameter of the sides of the structure.

When you have decided on the size of the cord, you need to fold it so that one part is longer than the other by 15 cm. Winding the cord begins at the edge that divides the bobbin into two parts. Here will be located the fastener, in which you need to insert the thread, bent in half.

Now you need to figure out which direction to tuck the trimmer line into the grass trimmer. To do this, inspect the bobbin. often there is a special arrow on it. If there is no explanatory information, you should find the pointer on the trimmer head, and start winding in the opposite direction. The further steps can be divided into 4 steps:

  • Finishing wrapping. To do this, it is inserted into the side groove on the reel. Its second end is attached to the opposite groove.
  • Cut the ends of the fixed line. The allowance of 7-10 cm remains.
  • The threaded part is placed in the head of the grass trimmer. To do this, the thread is inserted and pulled up alternately into the entry holes of the structure.
  • The thread is pulled out of the grooves. After completing the action, the product cover is secured with the clamps.

After completing the last step, the garden tool is ready for use. If after inserting the fishing line into the grass trimmer the device does not work correctly, it is recommended to repeat the procedure, changing the thickness or type of cord. Otherwise the product may fail.

Remove the spool from the grass trimmer

On small electric trimmers with a bottom-mounted motor (when it is at the ground when working), the spool usually has two keys on the sides. We press them and disconnect one half of the spool body from the other half, which remains on the trimmer. Together with the first half is removed and the inner part, on which directly and winds lines for trimmer. Be careful during dismantling: there is a spring inside, which can come out and get lost.

For electric and gasoline trimmers with a bent bar (there is no possibility to put a knife on such trimmers yet) it is necessary to grasp the coil body itself with one hand and start turning counterclockwise the winglet, available on it, with the second hand. This is the one that fastens the spool to the grass trimmer bar. After unscrewing the wing nut, carefully remove the entire spool, taking care not to lose the spring inside.

On electric and gasoline trimmers with a straight boom and gear at its end (in such trimmers for grass in addition to the fishing line can also be installed and a knife) are looking for a hole under the spool, insert it, for example, screwdriver, quietly turn the spool, until the screwdriver will not get even deeper, and the spool will be fixed. Now turn the whole spool clockwise (since the thread is left-handed) and remove it from the grass trimmer. Next we disassemble the coil. It can be assembled with snaps or twisted with a wingnut. if the coil is on the catches, press on the sides of the catches so that they bend and release one half of the coil body from the other. unscrew the lug. You can also have a third type of connection between the two halves of such a spool: you need to grab the lower part with one hand and the upper part with the other, and start turning them in opposite directions. When disassembling this coil, you should also be careful not to lose the spring inside.

than 200 types of trimmers at the lowest in one place. Press and see

Now, after removing and disassembling the spool, we proceed, as a matter of fact, to winding.

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What kind of fishing line is used for grass trimmer?

line for the trimmer comes in several types:

  • The stronger is the round one;
  • For mowing soft vegetation. shaped;
  • For mowing narrow grass. with notches;
  • Special. fits certain types of grass trimmers.
Read more:  How to Make a Coil From a Trimmer

Type of cross-section of the cutting line must correspond to the vegetation to be mowed.

If you need to change the line for the trimmer, you need to pick up exactly the kind recommended by the manufacturer of this particular model of trimmer for grass, in other words, the thickness of the cutting thread must fit the power of the motor and the size of the unit.

Specialized cutting filaments are the best choice. It’s worth soaking the line for trimmer for a while, if you plan to change it in the coil.

After soaking it becomes elastic and stronger.

The cutting filament can be made of different components. Often found among them. nylon.

this material is characterized by the highest degree of wear resistance, its ability to withstand different temperatures and highest loads.

Nylon trimmer line can be stored for a long time, it does not dry out and does not lose its strength.

That’s why its lifetime can be quite long.

Reels or heads for brushcutter have a different structure:

How to catch more fish?

  • Single string. In a modification of such a trimmer for the grass is only one working line for the trimmer. Used such a unit in the main for small jobs, such as trimming grass.
  • Two-string. Can be both automatic. It comes with two strings. Used for grass trimmer for mowing and clearing areas.

Instructions on how to properly wind the cutting thread on the grass trimmer spool:

  • The first thing to do is to disassemble the head. To do this, press the latch and turn the lid to the side. Next, the bobbin is removed.
  • Measure the correct amount of cutting line and insert it in the slot.
  • Wind the trimmer line on both sides in the direction of the arrow.
  • The 15 cm ends should be left unwound.
  • These ends are inserted into opposite slots.
  • Then the ends are fastened in the hole in the head.
  • Then carefully insert the bobbin into the body, to do this, you need to slightly press it.
  • If necessary, you can pull the remaining ends of the thread outward. To do this, first pull one end of the thread and then the other so they can easily pass through the slots in the head.
  • Now assemble the slots in the body and screw on the cover.
  • Then press the bobbin and try to turn it as far as it will go. If you hear a click, it means the bobbin has clicked into place.
  • Next you need to pull the loose ends of the thread to the end.

How to wind a line for a trimmer on the mowing head of a grass trimmer or brushcutter

This video shows in detail how to wind a line on a grass trimmer or brushcutter reel. Threading a mower line.

How to wind a trimmer line onto the mowing head of your brushcutter (grass trimmer)

Find out more on our website: Subscribe to our YouTube Channel! Always glad to cooperate!

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Choosing a line

In order for the threading of the line into the trimmer head to be successful, it is important not to miscalculate with the choice of consumable material. The thicker the cord you put in, the thicker and tougher the grass it can cut. Often a universal line for the trimmer is used, the diameter of which is 2 mm. You can find the right diameter for your mower in the following ways:

  • For information on line thickness, see the instruction manual that came with your trimmer.
  • Note the bobbin itself. It sometimes has information on the possible line diameters.
  • Another option is to try inserting the cord into the exit hole. If it fits through without difficulty, then the selected line diameter is suitable for use.

Reel for grass trimmer

You can choose the cord thread according to the type of motor. If the line for the trimmer is too thick, the resistance to rotation will increase. the motor in this case will overheat greatly and will soon fail. Useful recommendations:

  • For an electric device with a motor less than 500 V, a cord with a thickness of 1.3 mm will do. If you can’t find one, you can use 1.6 mm trimmer line. If the power is more than 1 kW, choose a 2 mm diameter cord.
  • The gasoline grass trimmer has the importance of the shaft mower. A 2 mm cord is often used for the bent version. If the shaft is straight, then install 2.4 to 2.5 or 3 mm cord. The thickest line for the trimmer is installed on powerful devices. from 1.3 kW.

Pay attention also to the type of cord cross-section. Some popular options:

  • The most common lines with a circular cross section. They cut fresh grass well, but are poorly suited for shrubs and dead wood.
  • Twisted (spiral) cord is not highly durable, but not bad for thin young grass.
  • Serrated filament with sharp edges is ideal for large weeds in a neglected area.
  • You can mow the lawn more evenly with a rectangular, star or square grass trimmer line, but they are not very durable.
  • The strongest is a two-piece cord with an inner core and a round section.

Types of line for a grass trimmer

Please note that instead of fishing line you can’t use wire, metal strings and ropes, as well as ordinary fishing line. The device will be dangerous for both the user and others. So the rope or similar products will gradually start to work together, resulting in their ends unraveling, and the small pieces will fly away at high speed.

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How the line head works on the brushcutter. why it works

Depending on the manufacturer, the heads are not only different from each other externally, but also internally. Most reels have a pressure spring inside (semi-automatic and automatic). Above is an instruction on how to disassemble the grass trimmer head without a spring, t.е. on the manual trimmer head. The principle of disassembling a semi-automatic head with a spring inside is almost identical to the above instruction.

The principle of operation of a semi-automatic grass trimmer reel is as follows:

  • Inside the head is a spool, which is planted on slits that prevent it from moving freely
  • The spool is affected by the spring, which presses it to the slits in the design of the cover
  • A line for the trimmer is wound on the lead, the length of which depends on the tool itself. This length is usually between 1 and 4 meters
  • When you work to increase the length of the line, the spur of the reel is pressed down and the reel comes out of engagement with the splines. At the same time, the line for the trimmer is coiled from the drum, increasing in length
  • When the necessary amount of line has been released, release the hold-down, and continue mowing

The advantage of a tool with a fishing line is that this consumable does not require sharpening, compared to metal discs. In addition, if a stone or wood gets in the way, the line for the trimmer simply comes off, without negatively affecting the gearbox and engine of the tool, as it happens in the case of metal cutting discs.

Once you know the construction and design of the types of mowing or trimmer heads, you need to move on to examining the process of threading the line into the grass trimmer reel. Because this is the point where most power tool owners have a hard time.

Read more:  Which Side To Wind The Fishing Line On The Trimmer

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Advantages of a trimmer head

Metal discs are used on trimmers along with the heads. Compared to them, cutting elements with a fishing line have a number of advantages:

  • no need to sharpen consumables
  • If stones or other hard objects hit your trimmer line will simply rip, not injure anyone around you or the mower
  • Thread breaks do not adversely affect trimmer gears and motors.
  • machines with heads remove grass better than their metal counterparts.


Working with a technique such as a grass trimmer requires caution and care. Compliance with safety measures during work is mandatory for beginners and experienced masters. It happens that confident mowers lose their vigilance, make irreparable mistakes and seriously injure themselves. This is why it is important when working with the machine

  • Close the reel cover with all latches.
  • Do not coil more line than necessary: it is difficult to unwind later.
  • After refilling the reel, be sure to check the operation of the tool before mowing.
  • Choose a quality material that fits the particular trimmer.

No need to try to mow coarse grass with thick stems with a fishing line. There are steel discs for this. Wear protective clothing only. Wear safety glasses and proper shoes.

Grass trimmer reel assembly

Mowing heads for trimmers come in different designs. both simple and complex. The illustration below shows a semi-automatic trimmer head from a Husqvarna brushcutter (Husqvarna) disassembled.

This type of head is present in the package of the majority of gasoline mowers and electric trimmers, such as STIHL (STIHL), Patriot (Patriot), Champion (Champion), Bosch (Bosch), Huter (Huter) and others. The design of the mowing head is simple enough. It includes the following parts:

  • base of the mowing head;
  • button for semi-automatic feeding of the cord;
  • bobbin (spool) into which the line for the trimmer is threaded;
  • spring;
  • eyelets. the line for the trimmer comes out through them;
  • The cover of the trimmer head;
  • trimmer line (cord).

There are also simpler trimmer heads, shown in the following photo.

All these nozzles do not allow you to change the length of line in semi-automatic mode (after pressing a button). If the cord breaks, you have to stop the mower and change it manually.

Preparing to change

For clarity, the mowing head (bobbin) was removed from the brushcutter. it is not necessary to remove the filament to change it, everything is done on the spot. It does not take much time.

Disassemble the grass trimmer bobbin. it is held on the latches-clips. To remove the cover, push on the latches. If there is not enough force to do it by hand, a screwdriver is used.

The bobbin consists of the following:

The principle is as follows. By pushing the button, the bobbin presses against the spring and comes out of the fixing grooves in the cover of the bobbin. Hold it in place and twist the spool to adjust the length of the line. When the button is released, the body spring returns the coil to its original locked position.

Cutting unit attachment

The cutting block is the main part of the Philips Styler. It has short, sharp edges and is used for fast, precise hair length trimming.

To remove the cutting unit from the styler body, check if the detach button on the styler body is present. If it is present, press the button to remove the cutting unit.

If the styler does not have a release button, place your finger under the teeth of the cutting block and slide it out of the unit. To reinstall, insert the lower part of the cutting unit into the styler body, then slide the part with the teeth in until it clicks into place. Do not use excessive force; this can damage the appliance.

If you are unable to install the cutting block, check for foreign matter in the body of the styler and try cleaning it with a small brush or cotton swab.

No matter how well the electric grass trimmer we purchased worked on the dacha plot or a country house. sooner or later there will come a time when we need to remove the grass trimmer head for replacement or prevention. I should say at once that it is not necessary to remove the trimmer head completely in order to replace the fishing line. In this article I will tell you how to remove or replace the entire cutting head, using the example of an electric grass trimmer BlackDecker GL716.

Tips and recommendations on how to wind the line for the trimmer and what you need to know

There are some useful tips and recommendations that will be useful to learn not only for beginners, but also for the experienced masters of mowing. These tips will help prevent negative consequences in the form of injuries and improper functioning of the mechanism. These recommendations state the following:

  • It is necessary to install the cover until it clicks into place. And it is 2 or more clicks, which depends on the number of locks. If one catch does not click into place, when you start the tool, the reel could jump out and injure a person
  • Do not wind the line for the trimmer with a strong retraction, as well as in an amount greater than you can put it in place. It is better not to reel in more tooling than not to reel it in, as this will lead to negative consequences in the form of not being able to unreel it when needed
  • If you own the tool not with two line outputs, but with one (usually these are low-powered units), then the winding process is performed in a similar sequence as described above, only with the difference in the absence of the middle rim between the extreme bases of the spool
  • After replacing the material, you must first check the functionality of the tool, and then proceed to mow the grass. If a preliminary check is not made, the scaffolding can unravel and injure a person

This is interesting!Choose the right quality material so as not to get injured when working with gasoline mowers, trimmers and brushcutters. In the process of cutting the grass, small stones and other materials get under the rotating parts, which can fly long distances, so, despite the fact that the line for the trimmer is not a knife, work with the tool should be carried out in special protective clothing. The result of the work done is the following. after the replacement of the new material, the ordinary material is enough for up to 600 square meters, but taking into account the presence of a reinforcing layer on the line. Conventional nylon materials last less, which is important to consider when working. Do not try to mow thick-stemmed grass with a fishing line, as special metal discs or blades are available for this purpose.