Trimmer for grass Electric Freet Replacing with a knife. Preparation of a trimmer coil for grass for winding

Learning to correctly wrap the fishing line for a trimmer to the coil of a trimmer for grass and lawn mowing instructions for installation

Owners of private houses know how necessary the type of tool is such as a trimmer for grass. It can be gasoline and electric, and they differ in the design of power units. For injection of grass in areas where there are stones, trees and other obstructing objects, a fishing line for a trimmer is used as a cutting device. This consumable in the process of use wears out, so how to wind the coil of a trimmer for grass, we will consider in detail in the material.

Fishing lines is called consumable, which consists of nylon, and serves as a cutting device. Through this equipment, the grass grows, which is ensured due to rotation of the instrument head with a high frequency. This material has a different thickness, which depends on its use on the corresponding tools of low-power (from 1 to 1.6 mm), electric from 500 W (2-2.4 mm) and gasoline trimmers for grass with motorcycles (from 2.4 up to 3.2 mm).

The more powerful the tool, the accordingly there should be a cutting equipment. This affects not only the quality of the injection of grass, but also on the life of the material. If you ask the question of how to wind the coil of a trimmer for grass, then it’s time to change the reload of the tool. With the onset of spring, this issue is becoming more and more in demand, so it’s time to understand the instructions for replacing the fishing line in the coil of the trimmer for grass.

How to remove a coil from a trimmer for grass and extract a fishing line for a trimmer

Initially, before filling the fishing line for the trimmer to the coil of the trimmer for the grass, it is necessary to extract it from there. Coil or tip is a device that is located inside the braid, bobbin or drum. The heads are of different types (depending on the manufacturers), however, the principle of replacing the fishing line on the coil has the same. First of all, we will figure out how to remove the head from the tool, as well as how to get a drum with a fishing line from it.

It is interesting! The replacement of equipment can be done directly on the tool, but if you do it for the first time, it is still recommended to remove the head, and study the detailed process of winding. After the technology is mastered, you can perform work on replacement on a trimmer of a motorcycle or a gas station.

Instructions on how to promote a hand head on a trimmer, has the following look:

This process is not difficult, and as you know, it is not necessary to dismantle the entire head if you know how replacement is performed. When dismantling, consider the following nuances:

  • It is recommended to remove the head periodically to prevent the corrosion of the threaded connection. If you never unscrew the screw, then if necessary to do it will be difficult and even sometimes impossible
  • If the screw has a tetrahedral boring of the head, then for twisting you should select a screwdriver or bit of a suitable size to eliminate the licking of the faces on the head
  • When assembling the installation, a threaded seat should be treated with lubricants, for example, solidol or machine oil
  • If the edges on the screw are licked, then for its unscruptions you can use special clamping forceps
  • There are drums that do not require preliminary disassembly. To dismantle them, you should take up it, and rotate in the opposite direction of the direction of the clockwise

Knowing how to disassemble the drum, you should continue to clarify the process of replacing a trimmer fishing line for grass. Below the video shows a detailed process how to open a trimmer coil for grass and disassemble it.

What types of forests I am

The most common type of fishing line, which is suitable for almost all types of coils. a round cross.sectional cord. This is a regular fishing line for a trimmer suitable for mowing of juicy grass, but it will be much more difficult to mowed with dry, and even more so it cannot cope with the shrub.

As a rule, the diameter that can mow young grass does not exceed 1.6 mm. The thicker the thread, the more rough grass it is able to overcome.

There are fishing lines with sharp faces in the form of a sprocket or square, this option is more adapted to mowing dry grass just due to the existing sharp faces, but its lack of wear is more wear and it is inferior in strength to the round cord.

There are fishing lines with improved aerodynamics with characteristic dentes, scales and notches, a similar product makes less noise, but they use it only on benzos, since the output of such a thread from the coil is difficult, it is most often used with discs in which segments are inserted. The disadvantage of such a product is its fragility.

Most often in gasoline trimmers with an engine of more than 1.5 liters.With. Apply cords with a metal cable inside. This thread is ideal for mowing dry grass and small shrubs. The presence of a core, positively affects the wear resistance of this material. The disadvantage of such a cord is its price, which is significantly larger than the above opponents.

In order to wind a fishing line for a trimmer, it will take about 10-15 minutes. What is the coil of a trimmer for grass? Plastic case with a cassette inside, on which there is a special hook for convenient winding of fishing line. Almost all the coils of the trimmers have a similar attachment principle, this is a central screw-button, when pressed, it becomes possible to stretch the fishing line for the trimmer of the required length. The photo below shows several examples of various coils for trimmers.

Bobbins of the trimmers, the motor of which is located near the ground, have a different fastening to the rotation axis, they have two buttons on the coil located on the sides that need to be squeezed, the rest of the thread is no different from the other cassettes.

The principle of proper winding of the fishing line is similar in all of the above cases, so for example, consider the standard option with two antennae.

To remove the coil with a fishing line, you must unscrew the screw in the center, but keep in mind, the thread there is left, so you will have to twist clockwise, it is specially so that it does not open under the influence of centrifugal force during operation.

Next, using the screwdriver, disassemble the head and remove the coil, on which the fishing line for the trimmer is directly wound. This design can be installed as to change in trimmer to disk. Having measured the required length and folding it in half, you need to tuck a fishing line for a trimmer into a coil, bringing it out, as a result, its ends opposite each other (for this there are special slots for fixation).

After that, it is necessary to assemble the head in the reverse order, passing the ends of the cord in two corresponding holes.

If there are doubts or it is not entirely clear how to charge a fishing line for a trimmer for a trimmer for grass recommend that you see how to correct the fishing line for a trimmer into a lawn mower. In this video, the instructor will open a trimmer head in detail by steps, it will measure the required amount of fishing line, as a rule, this is from two to four meters, and demonstrate the assembly and installation for a trimmer for the grass.

What knives to put on an electric and a lawn mower

Before buying and putting a knife on a motorcycle, find out what they are and in what cases are used. Today, manufacturers offer the consumer a large number of types of these supplies. In general, the entire cutting tool designed for mowing grass can be classified:

The main material for the manufacture of trimmer knives can be plastic or metal. The use of such consumables largely depends on two parameters:

For safety reasons, manufacturers do not recommend putting steel knives on electric trimmers for grass. Almost all motokos operating from the electric network and battery are equipped with plastic blades. Depending on the manufacturer, they can be a solid disk design, with several blades or in the form of a special mowing head, which provides for the installation of removable plastic blades.

Direct rod in a gasoline trimmer for grass and curved in electric

Putting a metal knife on an electric trimmer for grass does not allow its design features.

  • The curved rod of the unit reduces the distance from its working part to the legs of the Kosar. In the case of a collision of blades with a stone or other hard object of a braid for grass, it is discarded to the legs.
  • The high torque, which we mentioned above, in the event of a collision of a metal knife with a solid object, transfers a large load to the flexible shaft of a trimmer for grass and its engine. What causes their premature failure.
  • Handle Electric Knules most often does not have a restrictive bar playing the role of the stop. Which does not exclude leg injury.

It is these features that allow the use of exclusively plastic knives on trimmers with electric engines. In a collision with an obstacle, the blades are destroyed, thereby protecting the legs of the mower from obtaining possible injuries.

The use of metal knives only on gasoline trimmers is also due to constructive features.

  • The direct design of the rod increases the distance to the legs, which provides the Cossacks with complete safety.
  • Comfortable U-shaped and J-shaped handles allow you to keep the tool firmly. D-shaped handles Motokos are equipped with a limiter resting in the leg of the Costsa, which does not allow to let the head to the legs when meeting a cutting disk with a solid obstacle.
  • The clutch of the gasoline engine allows you to smoothly gain speed to the optimal level. And when the blade collides against a hard surface, it can extinguish part of the blow.

Thus, gasoline trimmers for grass with an installed metal knife are best used in large areas. They will successfully cope not only with high coarse grass, weeds, burdocks and nettles, but also with shrubs, as well as young trees.

The shape of the blades of the disk set to the trimmer for the grass does not affect the quality of the work performed. The speed does not depend on them. Triangular, trapezoid, rectangular forms are all marketing course of manufacturers.

trimmer, grass, electric, replacing

Rules for replacing knives on a trimmer for grass

If the disk on the trimmer is used regularly, it needs to be removed from time to time to remove and sharpen or change it to a new. This part can be made of metal or plastic, have a different number of blades, but the replacement process remains the same. over, this procedure is similar to the equipment of different manufacturers, whether Carver or Huter, but minor differences are possible. Changing the knife on the trimmer is quite simple if you observe safety precautions and know the correct procedure for which you can find a description of which you can in the user’s instructions. The whole process of replacing step by step, as well as the way of independent sharpening of knives, will be described in this material.

Many users of mowers, both electric and gasoline engines, some time after using the purchased fishing line are asked: and how to replace it? If you exclude dangerous options (chain from a chainsaw, canvas from a hacksaw, wire, cable, string, etc.D.), which can cause severe injuries to the user and others, then a home.made fishing line for a trimmer from a plastic bottle is considered the best way out of the situation.

How to cut a bottle into a tape

Before proceeding with the manufacture of a home.made cord, you will need to prepare the material itself, namely the plastic tape of the required width and length. To dissolve the PET bottle on the tape, use various devices, the manufacturing algorithm of which can be found on the Internet. If you are going to mow large areas overgrown with grass, and you will need a lot of home-made cord, then, of course, it makes sense to make a more complex bottlecore from the corner or U-shaped aluminum profile. The process of manufacturing a bottle.cutter is shown in this video.

But if you are not interested in the mass production of a plastic tape, then from time to time to dissolve the bottle on the strips in a simple way.

Take a regular plug plug plug. Cut it in half (but not to the end). Remove all the sides located inside the cork

Folding the cut cork in half, pierce it with a knife through the figure below, while observing caution, since the plastic is very hard. To facilitate the process, the tip of the knife can be pumped up

Cut the bottom of a plastic bottle with scissors (if possible exactly, without zazubin). Insert the bottle into the device from the side where the knife blade is sharpened, and begin to crash a little. When a small strip appears. just start pulling it.

Thus, the entire plastic container will blossom into the tape of the same width.

A version of a bottle.cutter, which you will always have at hand, can be made from a conventional sharpener for pencils, preferably made of aluminum. In detail how to make it, shown in this video.

How to make a fishing line for a trimmer for a trimmer for grass

A chopped tape from PET bottles, if you wind it on a trimmer for grass, will mow, but not for long, because it is fragile and quickly breaks. It needs to be improved a little, and for this you need to do the following.

  • Insert one end of the plastic tape in a vice and click it.
  • The second end of the tape can be squeezed into a drill or electric screwdriver. Insert her into the cartridge of an electric screwdriver so that she holds well in it and does not jump out when tensioning.
  • Turn on the smallest revolutions on an electric screwdriver and begin to twist the tape, be sure to hold it stretched, otherwise it will begin to confuse.
  • After the tape stops twisting, without releasing the tension, begin to warm it up with a building hairdryer. Since this plastic has thermal properties (reduced when heated), the turns will be aligned and sleep.
  • During the warming of the twisted tape, from time to time, turn on the electric screwdriver and turn the rope to align the turns on it.
  • When you warm the entire tape, you will get a home.made plastic rope, which is quite plastic and durable.
  • In the case when you don’t have a drill at hand, you can use to twist a plastic tape with a regular stick, as shown in the next figure.
  • The construction hair dryer can be replaced with a regular lighter if you make a short length cord.

As practice shows, a fishing line for a trimmer for a trimmer for grass, made by yourself from one twisted tape, mows the grass well, but if stones or branches come across it, then quickly wears out. To eliminate this drawback, it is recommended to weave a plastic rope of several tapes, for example, from two or three. The following figure shows a homemade cord woven from three plastic strips. Although it differs in thickness from a single cord, it is much stronger than the first, and it serves as a longer time.

Further, as usual, the fishing line for a trimmer for a trimmer for grass is inserted into a mowing head or wound into a reel, and then inserted into the head, after which the sticking ends are cut so that they do not touch the protective casing.

Thus, literally from improvised materials, a free fishing line is obtained for a trimmer for a trimmer for grass, which can be made in unlimited quantities.

Recommendations related to repair

Mechanical problems are associated with damage to the trimmer head. This component is most often exposed to wear, and this element often contacts the environment. There are several options for a breakdown that is mechanical.

FSA 65

The length of the device is 154 cm. Current 5.5 a. The lightest of the rest of the mowers. This tool can be used in large spaces.

FSE 31

Light and cheap unit. Ideal for processing a small territory. It is better for them to collect, mow grass after a lawn mower.

Choosing the best option for a cutting knife for a lawn mower

Some manufacturers of trimmers with a rigid structure of the gear rampart equip their tools additionally not only fishing lines, but also with steel disks. This does not always happen, and if such a situation is appropriate, then if necessary, instead of a mowing head with a fishing line, a metal disk is installed. However, this does not always happen. First you need to make sure that a steel disk can be used on a trimmer. Consider all types, and designs manufactured for trimmers of cutting knives.

Metal toothed discs have the shape of a circle, on the basis of which the corresponding number of teeth are located. These teeth are of different types, shapes and sizes. The more teeth, the more effective the tool copes with thick grass and even small trees. Milling circles for trimmers are gaining momentum faster, which is their advantage. They also have a high moment of inertia, which is their disadvantage. This negatively affects the drive device of the tool, as the starting power increases, and as a result, the motor overheats during frequent stops. In addition, the equipment differs in the presence and absence of penetration.

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If the operator is faced with the task of pricing thick grass and dryness, then it is recommended to choose disks with penetration and a large number of teeth. Continuous discs are suitable for dying green grass of different densities, but they are used exclusively on powerful benzocoses with a motor volume of more than 40 cm3.


Putting a knife on a trimmer for grass is not so difficult. The manufacturer equips his tools with a special pin that allows you to block the gearbox and the key, with which the spool is unscrewed with the fishing line. The most important thing is to observe when changing the cutting elements safety precautions and the assembly sequence of disassembly.

The algorithm for installing a knife on a trimmer for the grass is as follows:

  • Remove the protective casing;
  • We block the drive. To do this, it is necessary to combine two holes. in the hub of the shaft and in the gearbox cup. After combining them, insert the pin into the holes;
  • We unscrew clockwise a spool with a fishing rod with a fishing line or a mounting nut that holds the boot (if the trimmer for the grass has not yet been used);
  • Next, we install the cutting knife, so that the slots on the puck of the hub coincide with the notchs in the hole of the cutting disk;
  • Install the boot;
  • We twist the mounting nut (counterclockwise) holding the stopped pin;
  • We tighten it using a tubular key;
  • Return the protective casing in place.

As you can see, there is nothing complicated. Now you can safely start the mowing of weeds on the site.

We carry out the winding of the fishing line

Sentlessly completed disassembly of a spray coil without losing its spare parts allows you to go to the main task-winding into a fishing line coil. Technological features of the design of the spool and the number of working antennae determine the sequence of actions.

Coil with one working osik

The easiest option and a simple sequence of actions:

  • The dimensions of the bobbin and the length of the original factory winding determine the length of the fishing line recommended for winding. 2 5 m.
  • One end of the fishing line is inserted into the fixing technological hole located inside the spool.
  • The fishing line for the trimmer is wound on the drum in reverse rotation of the spray in the trimmer product direction. as a rule, on the inside of the bobin, the arrow indicates which direction the winding is carried out.
  • A small section of the fishing line is left free to output it. it is fixed in a specialized border on the inside of the bobbin, designed to keep the winding when assembling a spool in working condition.
  • The left end of the fishing line is passed through the hole of the outer part of the bobbin.
  • Half of the bobbin are collected and put on the bar of the trimmer device.

Solving possible problems with fishing line

Most of the problems associated with the fishing line are similar to different trimmers and are solved in a similar way.

Turning the string

  • the presence of solid objects in mowing grass: branches, stones, etc.D., contact with which the string breaks off;
  • Powder of grass is close to the fence, and if it is mesh, then the fishing line for the trimmer is torn even faster;
  • low.quality cord. it is necessary to replace with a new reliable consumable;
  • wear of the output holes in the mowing head, as a result of which the fishing line for a trimmer breaks off from friction on the sharp edges of the bushings. it is required to replace parts with a new.

Large fishing line

Typically, a fishing line for a trimmer ends very quickly if you constantly knock a semi.automatic coil on the ground or press it with an effort to the surface. In this case, the head is unlocked, the cord is lengthened, and the knife cuts it. The second version of the fast consumption of fishing line is a trimmer for grass with an automatic coil is incorrectly used. If the mower regularly lowers the engine speed, the string is constantly lengthened and cut and as a result is quickly consumed.

The string does not hold

If a spring weakens a semi.automatic type in a semi.automatic coil, a fishing line for a trimmer does not hold and unwinds when working. The cord is extended, cut off with a knife, as a result, the owner of the equipment notes that the thread quickly ends.

Advice! To check the tool, you need to remove the protective casing and start the engine. if the fishing line for the trimmer is advanced, this means that the spring must be changed to a new one.

a fishing line for a trimmer flies out

If the string flies out with kosbe, this is another evidence that the spring in the bobbin is weakened or completely lost with an inaccurate analysis of the head. As a result, the cord does not hold and pops up when rotating.

The string is not advanced

In the coils of automatic and semi-automatic cords, the cord is served without stopping the trimmer for grass. If this does not happen, then:

  • The fishing line for a trimmer in the head is wound wrong, so the coil does not spin;
  • The winding of the fishing line is made unevenly, so the cord stuck between the turns and does not go out. so that this does not happen, you need to wrap the thread carefully, preventing distortions, a turn to the turns;
  • The ends of the cord emerging from the holes are very short, centrifugal force is not enough to extract them, so the fishing line is not served-before turning on the trimmer for the grass, it is important to control the length of the thread and slightly lengthen it, if necessary;
  • The cord is stuck.

The coil does not spin

The reasons why the coil does not spin are similar to the lack of fishing line. This is the wrong or uneven winding of the string, its sticking, as well as the short ends of the cord, emerging from the holes.

Trimmer fishing line sticks together

If when working a fishing line for a trimmer sticks together, the main reason is the installation of a low.quality cord. In the course of work, the coil is heated, and a poor.quality string melts and glued. The second reason is the clash of the cord with solid objects. In this case, its sharp braking occurs, the thread is drawn into the head and picks up.

Advice! To avoid problems, you can apply mineral oil to the surface of the fishing line or, after winding on the head, spray it with silicone. A more competent solution will be the acquisition of a good high.quality head, which will forget about such problems.

So, replacing a fishing line for a trimmer on a trimmer will not be difficult if you know how to disassemble the coil and wind the cord winding. This process is similar for technology of different brands. A detailed description can be found in the instrument operation instructions or watch on the video.

Preparation for replacement

For clarity, a mowing head was removed from the motorcycles (Spool). To replace the fishing line you do not need to remove it, everything is done in place. It doesn’t take much time.

We disassemble the rogue of the trimmer for the grass-it holds on the clan locks. Remove the lid, pressing on the latches. If you do not have enough effort with your hands, then use the screwdriver.

Spool consists of the following:

The principle of action is as follows. By clicking on the button, the coil presses on the spring and leaves the fixing grooves in the lid of the spray. Holding the coil in this state, you can twist, thereby adjusting the length of the fishing line. When the button is released, the housing spring returns the coil to the original fixed state.

Below on the coil there are several holes for a different diameter of the forest. For different manufacturers of trimmers, they may differ. In some cases (as here) they are signed, in others there is no.

These holes are needed to fix the fishing line when replacing it. After winding on the labina of fishing line, the ends of the latter are inserted into them. This is necessary so that the forest does not unwind at the time the coil is installed in the trimmer body for grass. In other words, it facilitates the replacement of fishing line.

There are models without specifying the diameter of the consumable. Then, in order to find out what maximum forest diameter can be used, it is tried on by the openings of the fishing line out of the trimmer’s corps of the grass (see. Figure below).

The coil has two sections for the fishing line separated by a partition. They may not be. They are needed only to distinguish and facilitate the winding of the consumer.

First determined with the required Lessa length. The latter is wound into one of the sections of the coil so that it does not go beyond it. In this case, 3 mm was wound, the length turned out about 2 meters. T.e. For two sections, you will need a segment of 4 meters. this is for the 1st method. For the second method you need two segments of 2 meters.

Now you need to figure out which way you need to wind it. To do this, many manufacturers of trimmers on the coils apply special designations such as in the figure from below.

If there were no such designations, then you need to pay attention to the spool body. There is a arrow that indicates the movement of the mowing head. The fishing line for the trimmer is wound in the opposite direction.

The first way

The prepared segment (in this case, it is 4 meters) is bent approximately in half-one segment should be 15-20 cm longer, and inserted into a special gap located on the dividing partition.

A fishing line for a trimmer is wound in a particular direction. This is done in an interference, the fishing line for the trimmer is neatly distributed. In this case, you need to wind the segment, which is longer into the section, which is closer to the button.

There are designs in which there is no division of the coil into two sections. This does not change anything, the fishing line for the trimmer is wound in a similar way. It is only necessary to ensure that the segments do not overlap among themselves.

The first should end the segment that is located at the bottom of the coil, t.e. closer to the fixing holes.

This tip is placed in the corresponding diameter hole. Trimmer fishing line is reliably fixed.

A long segment wraps another half turn. There it is similarly fixed. At the same time, the segment crosses another coil section.

A long segment wraps another half turn

The fixed ends of the wound fishing line are inserted into the holes of the trimmer’s corps of the grass.

The fixed ends of the wound fishing line are inserted into the holes of the trimmer’s corps of the grass

The coil is attached to the body. The ends of the fishing line are pulled with force so that the fishing line previously recorded in the holes of the coil of the fishing. This is easily determined by the characteristic sound (click).

The coil with the button is snapped in the corps of the trimmer’s trammer for the grass.

The coil with the button is snapped in the corps of the trimmer’s trammer for the grass

The replacement of the fishing line was successfully made. In this case, you need to install it back on a trimmer for grass and you can proceed to the span of grass.

It should be repeated, you do not need to remove the spool from the trimmer for the grass. this was done to clarify the process of replacing fishing line. You can disassemble the rogue in place, wind it up and put it back.

The tips so that they do not beat the trimmer casing for the grass, you can and should be cut.

Method 2. two segments

The only difference from the method is no different from the method. two wound segments of fishing line, instead of one.

There are two special fixing nests on the coil (see drawing above).

They hook it previously formed on the fishing line, and begin to wrap a fishing line for a trimmer.

Another type of coil. The through hole inside. There are holes on the outer case. That is, it turns out that the fishing line for a trimmer should pass through these holes both inside and outside, and immediately collect the coil. And use the button for winding (this is the same button that is used to free up the line during operation). Just to rewind the rod now you need to turn this button. over, the mechanism of this button is designed in such a way that you can turn it in only one direction, in the direction you need.

Selection of fishing line

In order for the trimmer for the grass to work “like a clock”, you need to choose the right fishing line for a trimmer, that is, choose it depending on the model of the trimmer for the grass and the type of work. Two important parameters in this matter. This is a diameter and a cross section.

The diameter of the line must correspond to the recommended for this model (this should be indicated in the product passport). The cross section of the line is round, square, with sharp edges (pentagon). The fishing line for a trimmer of a round section is designed to mow young grass and lawn, a square and five.sided fishing line for a trimmer is useful if the grass is rougher and on the lawns weeds have grown.

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Modification of the head of a trimmer for grass

The heads of a trimmer mowel for grass can be of various modifications: one.row for mowing the lawn (mowing with one thread of fishing line); Two.row for mowing grass and cleaning areas with automatic supply of fishing line or manual adjustment of the length of the string.

Modern manufacturers are increasingly offering gardeners universal trimmers for grass with two.row automatic mowing heads.

trimmer, grass, electric, replacing instructions for filling the line in a trimmer for grass

  • Insert the clamps until they press, and remove the lid from the head of the mowing.
  • Carefully turn the coil, it will be freed from the holder, and now remove it.
  • Cut two identical pieces of fishing line (the edge of the cut of the fishing line should be at an angle. This will facilitate the work). Take one of them and insert the end of the fishing line into a special on the coil (there may be hooks, eyelets, clamps). Then wind the string in the direction of the shooter. Distribute the fishing line for the trimmer evenly, tightly. Fix the end of the string in a specially provided hole in the coil.
  • Perform the same operation with the second part of the line, just tidy up the end to the coil from the opposite side.
  • Return the coil with a fishing line to the mowing head. Stretch the ends of the line through the holes in the coil and insert them into a special head connector.
  • Thoroughly align the fishing line for the trimmer and close the lid. Cut the excess fishing line for the trimmer, leaving 12-15 cm of each edge.

All is ready. Trimmer for grass is covered with fishing line and ready for the train. Now you can enjoy taking a braid beloved meadow, cottage, house.

It is important to remember that not only the quality of the work performed, but also your safety will depend on how you fill the fishing line for a trimmer in a trimmer.

The procedure for installing a disk on a trimmer for grass

Installation of a knife on a trimmer for grass is very simple. For this, a complete key is used, disconnecting the cutting nozzle, and a pin that blocks the gearbox. The procedure is as follows.

  • First of all, you should turn off the electric trimmer for the grass from the network, gasoline. just drown out. Disconnect and remove aside the protective casing.
  • Next, you need to combine holes on the gearbox and shaft to stick a pin in them and block the drive.
  • If a spool with a fishing line was used, it must be unscrewed clockwise.
  • Then you need to find a nut to tighten the knife.
  • The next step is to install knives. Trimmer owners are often interested in which side to put the disk. You need to do this so that marking with numbers and letters is on top.
  • Then you need to put the boot on top, and above it. the fixing nut, which must be tightly tightened with the key.
  • The last step is to install a protective casing.

As you can see, the procedure is very simple and the same for many brands, whether it is the technique of Stihl or Husqvarna.

On a note! If the owner of the device wants to replace the disk back with a trimmer fishing line, you can install a coil with it in a similar way.

Disk selection criteria

You need to choose a plastic or metal knife, given the area of ​​the site that is planned to be processed, as well as the type of trimmer for grass is electric or gasoline. The number of blades will depend on which shoots must be removed using the tool. Choose the desired disk shape, the number of blades and manufacturing material can be using the instructions for the operation of the device. It usually prescribes which mills are recommended to use to solve certain problems.


It is not recommended to put metal knives on electrocos, since the design features make their use dangerous for the user. This is due to the curved shape of the bar, the absence of stops on the handles, as well as a high speed of rotation.

Important! Direct rod provides the safe use of a trimmer for grass at such moments when the disk, rotating, pushes into the obstacle. In this situation, he bounces back. towards a person, so a curved design can cause an injury.

On trimmers with a flexible bar in terms of safety, plastic knives should be used. Their purpose is a mowing of soft grasses, dry. Whereas metal disks do a great job with high, thick, hard shoots, shrubs, as well as shoots of trees.


The number of blades is important in solving diverse problems. So, two to three pieces are enough to grind the grass. For hay harvesting, it is necessary that there are four to eight blades on the disk. To destroy small shoots of trees and shrubs, instead of blades on the discs, there should be a large number of small teeth.

Instructions for replacing a disk on a gas tank with a description

Having sorted out the design of the cutting knives, it remains to find out the process of replacing them and installation on the tool. If there is a head with a fishing line on a gas station, and it is planned to install a metal disk, then no remodeling of the structure will be needed.

To install a metal disk on a trimmer for grass, the following instructions must be followed:

  • First, a plastic protective casing is removed. it is not necessary. Depending on the model of the tool, the dismantling process may differ. If the trimmer has a metal casing, then it is not necessary to remove it. Removing a plastic casing is performed in order to install a metal
  • Using a special key-player or screwdriver, it is necessary to block the gearbox. The shaft blocking hole can be located on the side or on the end side
  • A mowing head or spool is twisted from the tool if they are installed
  • A disk is installed in the place of the head or spray. The internal diameter of the disk should be in a special groove. The nozzle is installed so that the front side (with letters) looks upward
  • After installing the disk, a fixing washer of the corresponding size is placed. After that, the mounting nut is screwed, having previously blocked the gear shaft. Direction for screwing the fastener. counterclockwise
  • After completion of work, it is necessary to install a protective metal casing. If it is not, you should leave a plastic casing

As you can see, the procedure for replacing the disk on the trimmer is not at all difficult, and takes no more than 5 minutes in time. Below the video shows how to properly change the mowing heads and circles on benzocoses.

We pull the trimmer disks correctly what you need to know about it

During operation of the lawn mower with cutting metal knives, they are dulling. This is a normal phenomenon, however, it is impossible to continue to operate such a nozzle. Dressed knives have low performance, so in addition to the unsatisfactory result of the mowing, you will also get overheating of the tool engine and wear of the gearbox. If knives or teeth of cutting discs are swept on the trimmer, then it is necessary to sharpen them. Some prefer to buy new cutting circles, which is not at all rational.

It is interesting! All types of cutting discs are subject to sharpening, including with winning attacks. To sharpen a circle with a winning attack, you will need a special diamond circle. What is the process of sharpening a disk with a winning attack on the teeth, is described in detail in this material. description how to sharpen a trimmer disk for grass:

  • First you need to remove the cutting element from the tool. It is unsafe to sharpen the tool
  • Inspect the element for professional fit. The presence of cracks, chips and other deformations is unacceptable. If there are such, it is necessary to replace the device
  • To sharpen the disk, such tools and materials such as sharpened, file, corner grinder are used. Which is better to choose depends on the skill of the operator. The easiest and safest way is to use the file. To do this, the cutting equipment is attached to the vice of a vice, and a manually is done the sharpening process at an angle of 30 degrees
  • If a sharpener (emery) or corner grinder is used, then in this case you will need to carefully sharpen. When sharpening, it is not allowed to make the metal red (metal leave), otherwise it will lead to rapid wear and abrasion of the cutting part
  • The best option that is recommended for beginners (it is also used by masters with experience) is the use of a file. You can sharpen the cutting edge as well as possible and accurately at an angle, which will positively affect the performance of the tool
  • If you have to sharpen a milling disk with a large number of teeth, then for such cases it is recommended to use a corner grinder with a thin abrasive circle

The video below tells how to sharpen the correctly milling wheels with a large number of teeth.

After the end of the sharpening of the mowing disc trimmer for the grass, it remains to install it in place, and check the effectiveness of the tool. After sharpening, take into account that it is better not to take up sharp parts, since you can get an injury.

Summing up, it should be noted that the efficiency of the injection of grass depends on the correct choice of the trimmer disk. For mowing grass on the sidelines of roads and paths, a fishing line for a trimmer is used, but to combat weeds in the country, as well as for the purpose of harvesting hay in the fields and in forest plants, lawmakers with metal disks are used. If the budget allows, it is recommended to buy 3 types of metal disks, and try them in work on your own experience to feel the difference.