How to unscrew the Sterwins lawn mowers knife. Sharpowing manually

Ways to twist the bolt

Below are the most effective ways to unscrew damaged bolts and screws.

With spoiled faces

Determining how to unscrew the bolt with torn faces, you need to consider whether there is access, location to it, and also which tool you can use. Based on these factors, one of the ways can be applied:

  • Use of the chisel. The method is suitable for large bolts, which have free access. All you need is a hammer and a chisel. The chisel is applied to the tangent to the head and sharp blows are inflicted on it. The method is simple, but it rarely allows you to achieve the desired result. It should be used only when there is no other tool at hand.
  • If there is free access to the location of the fasteners, you can use a universal rearranged key. This tool allows you to reliably squeeze even a round head. If you use small deciduous Kobra keys, which have sharp notches on the working surfaces, then you can unscrew the smallest bolts. Such a tool can help out in many cases, but it should be new. In a worn tool, the notches can no longer provide reliable clutch with metal, and the key will slip.

If the faces are not badly damaged, then they can help out the heads for the unit key. For these purposes, the profile of the uniform key should be with 12 faces (inside the head of the asterisk, not a hexagon). Unscrewing is carried out as follows. Choose a head by one size smaller than the size of the bolt, and with the help of a hammer they attach it to the torn edges, then unscrewed in the usual way.

With a torn head

Very often, analyzing the old threaded joints, you can not only damage the boundaries of the bolt, but also tear the head. Then the question arises: how to unscrew the torn bolt. If you disconnected the details, and the torn bolt protrudes from the body of the part, then you can use all of the above methods.

And how to twist a bolt with a torn head if the bolt body does not protrude from the part? There are several options for solving this problem.

  • It is best to use a special tool. extractor. The extractor is made of a metal rod of a cylindrical shape, on one end of which there is a conical thread of the opposite cut, and on the other. a shank of a square section. In order to be used, in the center of the bolt you need to drill a hole. Opening diameter. 2-3 mm less than the diameter of the thread. After that, you need to take an extractor suitable in size and shine it into the hole with a light blow. Rotating the extractor by the shank, unscrew the remaining bolt.
  • If there is a tap with left thread, you can successfully apply it as an extractor. The only difference is that the diameter of the hole should be the same as for cutting the thread. The exact value can be found in the corresponding tables.
  • If you still have not happened, you can try to remove it in this way. Drill the hole of the maximum possible diameter in the bolt, trying not to damage the threaded connection. Then take the corresponding tap and cut the thread in the hole. During this process, the thread is cleaned and the remains of the bolt are removed.

Cleaning and editing

When the knife is removed, it needs to be cleaned the first thing from adhering dirt and hardened herbal juice. The easiest way to do this is to use a metal kraitsy. The knife strip should be clean from all sides: not to a metallic shine, but without the smallest sticky fragments.

Often, due to the entering the working area of ​​solid items, such as stones and chips, the blade is very noticeably deformed. Most of the blades themselves are not straight, but the cutting edge and strip 10-15 cm from it should be examined for the presence of local tubercles and curvatures. This is done using a short even line.

You can straighten the blade with an ordinary hammer, in which the edges of the box are slightly rounded. The knife is laid on an even massive support (anvil), then the correct shape is given with weak blows of the metal. You need to rule the knife, starting from the edges of the curved area, gradually moving to the center

The curved body of the blades is a small problem, but it is very important that the cutting parts are straightened into one straight line for a trimmer. You also need to check the casting blades that often extend from the blow. If the blades are bent at different corners on different shoulders of the knife, this will worsen the air flow and the mowed grass will not be mulched properly

If the blades are bent at different corners on different shoulders of the knife, this will worsen the air flow and the mowed grass will not be mulched properly.

I made a huge mistake on the edger, but I was able to save it.

The best ways to unscrew rusty bolts and nuts

Consider the best ways to unscrew the rusticated details in more detail.

The most famous and common option is to unscrew with a lever. Когда болты заржавели и они не справляются со своей функцией крепежа, например, унитаза, эта проблема решается так. Corrosion fasteners are cleaned with a brush with hard bristles. A segment of a metal pipe is put on a unit or an open key and used as a lever device. Actions must be smooth. Then the mount is removed by a capacity.

Rust dissolution

Car services know how to unscrew the rusted bolt using WD liquid. 40. The tool can penetrate deep into the gaps and get to the thread of the fasteners, completely dissolving the structure of the rust. She needs to use it like this:

  • Pre.shaking the liquid in the can, spray the problem place;
  • They wait for a certain time. from 20 to 40 minutes or more, if the fasteners are large, and there are a lot of rust;
  • Aerosol fluid is rapidly corroding the rust and will help destroy oxide layers along the entire carving of fasteners;
  • perform energetic movements to unscrew the bolt.

Almost always the problem is solved. fasteners from bolts are developed. If this aerosol is not at hand, there are many other effective ways.

The heating

Available and simple way to unscrew rusty fasteners. heating. Any heating device is suitable: a construction hair dryer, a soldering iron, a gas burner or an ordinary lighter. When heated, the metal changes its structure, expands, becomes more supple, and corrosion is destroyed under the influence of high temperatures:

  • The fastening is subjected to increased heating for several minutes, it is advisable to wait for the metal to be;
  • Without allowing to cool down, they are unscrewed, it is possible to use the methods of loosening and surveying;
  • Use a end or a pitch key.

If the fasteners have not succumbed on the first attempt, an attempt to repeat 2-3 times is recommended. Practice shows that the bolt is unscrewed.

The destruction of the nut

In especially difficult cases, when a bolt with a nut is not amenable to, experts recommend that the nut is removed by destroying it. With the help of corner grinder, one of the faces of the nut is cut, trying not to damage other details. After that it is removed, and the bolt is removed.

Good to use a nut pulp. Under pressure, he delays the detail, and it cracks. After that, the nut is easily removed by the usual wrench.

If the bolt is tightly stuck, then it is drilled with a drill in the direction from the head to the bottom. The diameter of the drill must correspond to the size of the bolt. The bolt devastated from the inside, as a rule, comes out by itself.


Sometimes you can cope with the situation, acting from the contrary. If it is not possible to unscrew the rustic fasteners, for example, from the toilet, it is necessary to make several energetic efforts to twist. Often it triggers, the bolt breaks off and after that it turns off easily.


There is another advice on unscrewing a rusty bolt. it is effective and when the edges of the thread are torn off. Previously try to shake the fasteners, at least slightly, this contributes to micropermers in rust clutch. Next, the bolt is covered with an extension of soft metal, they hit hard several times in a row with a hammer. The oxidative compounds should be destroyed and crumbled, and the boiled fasteners will succumb to efforts.

How to remove a knife from a lawn mower

The process of disassembling the machine depends on the type of lawn mower, but before starting work, make sure that all safety rules are respected.

The machine operating in electricity must be de.energized.

The machine operating on gasoline, first of all, removes the cap of the spark plug

It is important to exclude the leak of the fuel, so the fuel tank of the unit should be empty. You can block the fuel valve, after installing a tightly adjacent membrane of rubber under the lid

After that, a gas hose intended for the withdrawal of crankcase waste is compressed. Otherwise, there is a risk of pouring oil. It is necessary to constantly check with the instructions in order to avoid possible complications.

The blade is attached in two ways: the only bolt in the center of the structure through a style washer or a pair of bolts that are attached to the pin or central hole. Bolts are unscrewed clockwise

During this, it is important to fix the cutting parts of the lawn mower to avoid injuries. For this, a wooden beam is suitable with emphasis in the ground

Cleaning and editing

At first, the working part is cleaned of dirt or garbage, which were praised for it during his work. The most suitable tool for this work is metal brushes (dyeing). When the blade is cleaned, you need to degrease the surface and inspect the damaged blade.

Due to small solid debris that has fallen under the tool during operation, the secateur may be deformed. To inspect for curvatures, only the cutting edge of the knives for the lawn mower, The blade itself is a complex design. A damaged tool is straightened with neat blows of a hammer with rounded edges. You need to put a knife on a strong surface, for example an anvil. It is necessary to straighten it, starting from the edges of the deformed zone and gradually moving to the center.

Balancing a knife

Blade balance is an important point in the operation of the lawn mower. Without this, the cutting elements will create constant vibrations, this reduces the durability of technology and complicates the work

First of all, this is important for tools with bilateral single blades, for other types of types it is not so critical

To check the balancing, it is necessary to fix a smooth and thin bar in a horizontal position, holding the end with a vice. After that, the blade is put on the pin and fixed. If there is no balance, then the ends of the knife can shift relative to each other.

For the correct balancing of the blade, the metal from the back of the coaching is first grows so as to eliminate the advantage. It is impossible to achieve accurate balance at home. For the effective operation of the braid, it is enough for the aggregate blade to stay in a horizontal position for some time.

How to unscrew a bolt or nut with torn faces

During the repair, surprises are inevitable. Equipment may fail, it would seem durable to the part may break in the most unnecessary place, and bolts and nuts can resist loosening. And then the repair is stretched, taking excess time, nerves and money.

Now on the network you can find many of the manual for any repair work. They say that on the basis of the Internet you can build a house from scratch and disassemble the car with a screw.

But with such a huge number of tips and recommendations, it is difficult to choose the right method for you. In this article, we will try to collect all the experience and organize it for the convenience of use.

Methods of unscrewing acidic bolts

Motorists, namely, they most often have to deal with bitten bolts, know how to unscrew a sour bolt. Use several methods of unscrewing, including the use of physical and temperature exposure, chemical compositions.

Supporting and physical impact

The impact by means of a hammer and a chisel helps to disrupt adhesion of materials, corrosion, as a result of which the bolt gives in and is removed.

Supporting. Preparatory event that helps to destroy the oxide. In mild cases, after the processing, it is possible to unscrew the methysis. It is enough to hit 2-3 times on the fastener element with a hammer using a copper infusion. Stretching. Like surveying, aimed at the destruction of rust. You should not unscrew, but rather, tighten the bolt even tighter, and only after that try to display. Lever arm. He is advised to use as a key improvised means. Previously, the metiz itself and the area around it should be cleaned with a brush with a metal pile. Then a united key is put on the fasteners’ head, and the pipe is on the key. The lever increases the force of exposure, but it is not recommended to apply excessive efforts, as this leads to licking the faces of the line and breakdown of the key. Chisel. With the help of this effective technique, you can break the rust, so that the fasteners will break from the place

However, in this case, it is important how the chisel is installed. It should be assigned closer to the edge of the bolt/nut, at an angle, towards unscrewing. On the stupid side of the chisel, you should deliver a sharp and powerful blow with a hammer.

On the stupid side of the chisel, you should deliver a sharp and powerful blow with a hammer.

WD-40 and penetrating tools

WD-40 is a popular tool that is used by almost all motorists. If suddenly it was not at hand, other liquids, such as gasoline, kerosene, white spirit and similar to them, will help to unscrew the bolt due to the high penetrating ability and the properties of the solvent. They soften dirt, rust, penetrate deep into the thread, playing the role of lubricants. The use is simple: you need to clean the site around the acidified connection and pour the selected tool. After 10-15 minutes, the deposit softens, the lubricant will leak into the smallest gaps-the bolt can be twisted.

Warming up

Under the influence of high temperature, the metal expands, therefore, in order to unscrew the bolt, you need to heat a nut or part into which the metiz is screwed, and if this does not help, then the fastener itself, since the size of the size will help to destroy the rust. You can heat with a tool such as a gas burner, soldering iron or even with a lighter.

A special device for warming up corroded and encouraged bolts and nuts is an induction heater in bolts. The heated part is placed inside the induction field, spiral, and as a result heats up. The advantage is that heating is carried out immediately from all sides, and not on the one hand, as in the case of using a burner or other tool. This device is small, comfortable, operates from the network 220 V. You can collect it yourself from improvised means.

While the nut is hot, it is unscrewed by an open or end key. If it was not possible to immediately unscrew, repeat the procedure and use combined methods (lever, firing, loosening).


Acids are used to unscrew the bolts and nuts. A well.known remedy. table vinegar. Having moistened the cleaned connection with vinegar or covering the rusted area of ​​a rag, moistened with vinegar in vinegar, you need to wait about 30 minutes so that the rust softens. Then the metiz can be twisted.

In addition to vinegar, orthophosphoric acid is used, and in particular Coca-Cola, which contains it in a sufficient amount for a positive result. The procedure remains the same: it is necessary to clean the surrounding fastener and fill in the mount with a drink. He must soak. Periodically try to unscrew the bolt. Orthosphoric acid is used for degreasing and dissolving rust.

A special tool that is made on the basis of acids is a rust converter. Before using it, the surface must be cleaned and degreased with a solvent. Then a small rag is wetted with a converter and put directly on a rusted connection. Rust is destroyed. the metiz is twisted.

Removing a knife


An independent process for partial disassembly of the unit for haircuts of vegetation begins with preparatory work. Safety measures should be observed and gloves work. It is necessary to prepare the key in order to unscrew the mount, as well as a small plank that will help to fix the knife. Electric device is disconnected from the network. In gasoline, fuel is drained and the spark plug is turned off to exclude the possibility of sudden contact. Regardless of the type of machine, the owner must unscrew the grass collector.

Important! Before turning the mower on the side or upside down, you should examine it and exclude a leak of gasoline or oil. The oil in the crankcase is best drank. Otherwise, if a leak occurs, starting the unit will be problematic

Otherwise, if a leak occurs, starting the unit will be problematic.

You can also not turn the mowing, but simply put it on a frame or two chairs imitating a lift. After that, a person is selected to the device from below.

In the first case, one knife in the shape of a small strip is used. Its length will be similar to the one that is indicated in the characteristics of the device under the point of the width of the mowing capture. This is usually 30-50 cm.

In the second case, two knives are used, which are attached at an angle of 180 degrees relative to each other.

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On a note! Another version of the cutting system is a blade with four blades. They are connected to each other with a common base or not.

In the latter case, we are talking about several knives located at different heights. Such a nozzle in the form of the upper blade is equipped with modern models that have an additional function of mulching the lawn. Plants from a tank for grass fall on the upper blades. Sharp edges thoroughly crumble greens, which after the procedure covers the ground lawns and turns into mulch.

The mower does not mow grass

  • A knife is blown or broken. Sile it with a file, an angular grinder, on a sharpener (you need a plane.cylindrical sharpener) or on a machine (or drill) using sandpias. Check the balancing of the cutter.
  • The cutting itself is set incorrectly. Put a gap in a cylindrical mower between a rotating cylinder and a knife blades equal to a thickness of a piece of paper.

How to unscrew a rusted nut

You make great efforts and spend a lot of time to crank the nut, but nothing comes out. Do not be upset and torment yourself in vain. Set aside the tool until it breaks and use the liquid that can dissolve rusty coating and reduce friction force.

There are many types of such substances, for example, the most famous tool is WD-40. There are other fluids that dissolve rust, such as kerosene, carburetor cleaner, gasoline and brake fluid. Table, iodine and alcohol vinegar may be no less effective. Some locksmiths noticed the benefits even in Coca-Cola or Fanta, which includes inorganic phosphoric acid.

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  • Moisten the rusted nut and wait 15-30 minutes. After the allotted time, take the key and try to crank the nut. If it does not work, then the liquid did not penetrate deep enough. Try to wet it again, but already a napkin or strip of a rag, and then wrap the nut. So the liquid will last longer on the metal and can better dissolve the rust.
  • After such a procedure, the nut will gradually begin to shift. You can accelerate unscrewing if you knock with a hammer. Then take the key (if possible, lengthen it, for example, a pipe segment), securely fix it on a nut and a very sharp jerk, try to disrupt it from the thread. If the nut is small, then it is better to unscrew the boost (forward and back).

Instructions: Heat a nut and a bolt well (preferably reddened). And then try to unscrew it. In some cases, the nut has damaged edges, so the key will not help. To solve this problem, weld the end head to the nut and warm up the entire structure. Then unscrew the nut with a gate

During the heat treatment, keep care so as not to get a burn

This method is not the most profitable, but often becomes the only saving method to free the bolt from a rusty nut. To do this, you can use a chisel, a hacksaw for metal, a corner grinder or an electric drill.

  • Using a chisel and a hammer, start punching grooves on the sides (on the faces of the bolt). Driving a chisel as deep as possible, it will be possible to increase the internal diameter of the nut. As a result, this will lead to the destruction of the threaded connection. About the same can be done with an electric drill, drilling holes in the faces. The destroyed nut can easily withdraw from the bolt. It is worth noting right away that these tools are applicable if there are enough space for access to the nut.
  • If there is enough free space, then it is better to use a hacksaw for metal or a corner grinder. Such tools will quickly help to cope with the problem. All you need to do is gently cut the nut along the axis of the bolt.

This article discussed the reasons for the jamming of the nut, safety precautions during work, as well as various methods that help solve the problem. Thanks to the tips described, you can quickly unscrew any rusted nut, saving your strength and time.

How to make repair of the lawn mower with your own hands?

Those who have land are very familiar with what struggle is weed.

Especially when it often rains and the grass grows not by the day, but by the hour. Earlier, and sometimes even now, this issue was resolved with the help of a good old braid for grass.

But technologies are not standing still and now in this case, assistants such as electric and gasoline lawn mowers help.

The gasoline mower has several significant advantages over electric, such as mobility and lack of danger of electric shock. But there are many drawbacks, for example: high price, a lot of noise, expensive fuel and significant weight.

Electric mowers are cheaper, easier, work on inexpensive energy, and are not difficult to maintain and repair. These advantages become the main reason for their great popularity among buyers of this type of technique.

But despite the pretty good quality, improper operation and a lot of load, they can disable the device. In such cases, you should not immediately carry the device to the repair shop, but try to find and eliminate the cause of the breakdown yourself. over, as mentioned above, electric lawnmands do not have as many nodes and details as gasoline.

The main thing is to have some tools and faith in yourself. In this article, I will just show you how I did my own repair.

AL-KO, the lawn mower of the company, has serious problems in work, namely: the engine stop without load and its strong overheating, was taken as an example. The motor stops, buzzes and start it again, only re.pressing the “Start” button helps. The button has to restart almost every 30 seconds, and with further work and more often.

Of course, you can work, but it is very annoying and gives the feeling that somewhere the problem is. Therefore, I wanted to figure out where?

After the mower was working within an hour, the engine temperature was measured. It was impossible to touch him with a finger. He directly radiated heat. If you continue to pay attention and continue to work on such a mower, an electric motor will inevitably fail.

It is necessary to determine the cause of the motor overheating. To do this, remove the top cover of the case, under which the engine is located and its power chains.

The lid is held on six screws with a hat under a cross screwdriver.

Газонокосилки. Просто поменять мотор,не выйдет

Unscrew these screws and remove the lid. upward.

Having removed it, you can see the impeller, the capacitor, two connectors and the engine itself.

At first glance, no special problems are invisible. The engine winding darkened slightly from the temperature, but so far it is not critical.

To more carefully inspect the capacitor, it is necessary to unscrew the mount and pull it out.

The capacitor of some external damage did not show.

To check it, you need to disconnect the capacitor and feed the engine for a short time. If he did not start and began to buzz, then the capacitor is intact, because the engine was launched with him. Disconnect the power and connect the container connector back to the engine circuit.

Next, try to twist the impeller. It is mounted on the axis of the rotor and rotates rather tight.

And the reason for such severe rotation is a mechanical brake, which for safety stops the engine rotation when the power is turned off.

It looks like a sleeve that moves freely from top to bottom, along the rotor axis.

Когда напряжение на двигатель не подано, эта втулка прижимается верхней частью о крышку, на которой приклеено две резиновые полосы. Thus, the knife is inhibited on the rotor shaft.

When feeding, the brake sleeve under the influence of the magnetic field is drawn to the center of the rotor and provides free move.

With a careful examination, this sleeve with the brake noticed that at the time of turning on the engine, the brake is retracted and gives the shaft free rotation, but after 2-3 seconds it is released again and begins to slow down the motor. This should not be. Hence the stop of the knife during operation and overheating of the engine.

To find out what is the reason for this work, you need to remove and disassemble the engine.

To do this, disconnect the connectors and put the device on the side to get to the clamping screws. Access to them closes a knife with mounting elements.

To remove it, first you need to unscrew the knife bolt (cm. Figure below).

Direction of rotation, like a regular bolt, and not with left thread. That is, unscrew it counterclockwise, and tighten the clock.

The head of the bolt is plastic, so using the key, it must be well planted so as not to “lick” the edge.

After extracting the bolt, the knife and its plastic disk are removed.

Under it is a height sleeve. With its help, you can slightly lower the knife.

Adjustment is carried out by the washers put under the sleeve (see. drawings below).

We remove everything, only the engine shaft and the hexagonal screws of its fasteners remain.

The key for these bolts has a distance between faces of 6 mm. Unscrew them counterclockwise. Removing the last screw, with one hand, hold the engine.

Next, put the mower on the wheels, and clasping the engine with our hands. we raise it.

To disassemble the motor, you need to free tightening studs. We unscrew them all.

Remove the impeller with two screwdrivers.

We proceed to the removal of the back cover. A wooden block and a hammer will help this.

But first you need to mark the position of the covers with something sharp to the engine body.

Put the engine on the side and hit with a hammer, through a wooden gasket, on the rear shaft.

The motor at that moment should hold another person.

We hit until the axis comes out of the bearing to the end.

Review of species

For motorcycles, preference should be given to special knives. They allow you to mow higher and hard grass than a fishing line for a trimmer. In addition, the knife is suitable even for trimming young bushes.

There are many types of discs that differ in the cutting edge, shape and material from which.

By form

The form distinguishes knives with disk canvases and several blades that are at a certain distance with each other. The shape of the blades may also differ. It is worth noting that this does not affect either speed or quality of work with a motorcycle.

Currently, manufacturers began to offer, in addition to traditional forms, still triangular, rectangular and trapezoidal.

Knife cleaning before sharpening

Before sharpening the knife, carefully clean it. On steel stripes, plant juice and small particles of grass accumulate. In this case, the juice hardens over time and turns into a hard crust. It is not worth washing the blades, it is better to choose a sharp metal scraper in the garage or use a brush.

No need to polish the cutting element of the machine to shine, the main thing. Remove sticking waste. After that, you need to improve what, straightening it and eliminating all the irregularities. Cones arise from solid fragments and stones falling on the blades. The right option in this case. This is a job with a hammer. With the help of this tool and a flat working surface, on which it is placed, you can fix all local distortions.

Experts advise starting to align the blade from the edge, gradually moving to the middle part. As a result, the steel strip should become as flat as possible. Only in this case he will be able to perform his function by creating an air flow that transports grass to the tank to collect plant residues.


In the first case, the work is organized if the blades are in a relatively good condition and only a little dull. Usually this sharpening is used if the owner drags the cutting elements of his garden tool several times per season. If so, then it will be enough to walk around the edges of the file and fix them.

During operation, the curvature of the knife, roughness are removed

It is important to maintain factory angles and descent. Both sides (blades) are based evenly. The grinder is contained in the same position

Disbalance should not be allowed, in which it is impossible to achieve the coordinated operation of the blades. This problem will lead to the operational wear of assembly units (bearings)

The grinder is contained in the same position. Disbalance should not be allowed, in which it is impossible to achieve the coordinated operation of the blades. This problem will lead to the operational wear of assembly units (bearings).

After the main sharpening, the edges should be straightened. This is done in order to eliminate the slightest breakdown. It is better to use sandpaper eight hundred gratings. Editing is a small displacement of paper along the sloping plane.

Note! Instead of a file, you can use a grinding stone. Before the procedure, it is soaked in soap and water for a quarter of an hour. During operation, it is also allowed to moisten the tool a little. process

  • Before removing with what mowers, fix it with a strong board or log, resting on the ground. It is necessary that the knife does not move when it is removed. However, some neglect this security event and simply hold the liner with their hand.
  • Take a wrench or tool in the form of g, is ideal in size. The use of pliers is not recommended. This fitting tool easily spoils the edges of the bolts.
  • Usually the cutting block is fixed with one large bolt located in the middle. Modern models have several mounts. As a result, you will have to unscrew them.
  • Bolts are more often right.sided. Therefore, to unscrew the bolt, turn the key counterclockwise. In order to screw it back, this is done the opposite, that is, tighten the bolt clockwise.
  • It happens that over time, the threaded steam sticks out, rusts, and it becomes problematic to twist the bolt. In this case, special lubricants are used, which are called rare keys.
  • If the removal was successful, and all the mounts of the virgin, then bolts, nuts, washers are removed in a box for safety. These compounds may have to be reused.

Additional Information. Before taking out the knife, remember its position. Most often, the knives put counterclockwise the tip, and the rotation of the element is as follows. However, this advice does not concern all models

Therefore, you should pay attention to the position of the element. It is in the same position after sharpening that you will have to put a new knife or fasten the old

Frequently asked questions: Trammers for grass

How to wind a fishing line for a trimmer to a trimmer coil for grass?

The time of the effective operation of the trimmer for grass without reloading is correctly wound up correctly on the trimmer. For winding, you will need to perform the following actions:

Fold the fishing line for the trimmer in half so that the difference in the length between the remaining ends is 10-15 centimeters.

In the groove of the coil, insert the formed loop.

In accordance with the indicated direction on the coil, carefully lay the fishing line for the trimmer.

Fix the short end in the groove on the side, and the long in the opposite.

Place the inner coil with a wound ribbon into the spray building. Stretch the fishing line for a trimmer from fixing grooves and dress the lid.

If necessary, cut the ends of the fishing line to 10-15 centimeters.

a fishing line for a trimmer wound, it remains only to install a spool on a trimmer for grass.

How to put a knife on a trimmer for grass (motorcycle)?

The algorithm for installing a knife on a trimmer for grass is quite simple. The procedure for action almost completely coincides with the procedure for replacing the coil of the trimmer for the grass. So, let’s start:

Important! At the preparatory stage, make sure that the trimmer for the grass is disconnected from power. The electric model should be turned off from the outlet

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As for motorcycles, to continue the procedure, a sufficiently turned off engine.

If a spool is installed, then remove it. How to rent a coil read in our material with a photo.

Set the knife by reconciling the slots on the puck of the hubs with recesses in the disc hole.

Install a clamping puck and mounting cup

Tighten the nut with a tubular key counterclockwise, holding a stopped pin.

The knife is installed. the trimmer for the grass is ready to work.


Sharpening of cutting elements is organized as necessary. Many people wonder: “Does a new knife need sharpening?””. The answer is not. These elements are dragged at the factory. After buying garden equipment, it can be used without additional work on removing and sharpening blades.

You can sharpen the cutting element of the lawn mower in two ways:


In the first case, the work is organized if the blades are in a relatively good condition and swept away only slightly. Usually such sharpening is used if the owner sharpens the cutting elements of his garden inventory several times per season. If this is the case, then it will be quite enough to walk along the edges and correct them.

While rounding of the knife, roughness are removed during operation. At the same time, it is important to maintain factory sharpening angles and descent. Both sides (blades) grind evenly. The grinder holds in the same position. An imbalance must not be allowed, in which there is no coordinated operation of the blades. This problem will lead to the prompt wear of assembly nodes (bearings).

After the main sharpening, it is necessary to edit the edges. This is done in order to remove the smallest chopping. It is best to use sandpaper, whose granularity is 800 grit. The editing consists in a slight displacement of paper along the descent plane.

note! Instead of a file, you can use a grinding bar. Before the procedure, it is soaked in water with soap for a quarter of an hour. During operation, it is also allowed to moisturize the tool.


The machine will help to cope with the work quickly and, without making great efforts. The main thing in this matter is not to achieve too sharp edges. If you sharpen them so thin as the razor, then the risk of chips and breaks is great.

During operation, it is important to adhere to the right angle and remove the metal from the blades in the same amount. The machine does not get rid of the editing of the edges with sandpaper.

Editing edges

When the blades are sharpened, they need to be corrected. This is done using a segment with moisture.resistant sandpaper with a grain of about 600-800 grit. The paper must be moistened with water and turned into a cylinder with a diameter of 100–150 mm.

Edit is aimed at removing the slightest burrs and blocks, because of which the thinnest edge of the blade may be wrapped in. The sandpaper touched into the cylinder must be slightly pressed to the descent plane and stretched out with smooth movement from the grain. It is also recommended to make a smooth displacement from the center to the edges.

When the descents and sharpening, all manipulations were carried out with only one side of the blade. In the process of editing, the knife is also processed on the back. Here the paper is pressed almost close to the body of the knife, but with a slight slope towards the edge. The effort of the paper compressed when editing is very small, but the movements need to be done quite a lot, seeking to eliminate large crooks on the brilliant descent, which remained after sharpening.

For reference: you can sharpen a lawn mowing knife and open by an analogy with a conventional manual oblique. This, however, requires a special adaptation. grandmas, as well as a specific skill. But with this method of pointing, you do not need to balance the knife.