How to disassemble a trimmer handle for Greenvorks grass. Technical support

Trimmer for GreenWorks GD82BC grass: Review of the purchase and work in the country

It is difficult to contain a summer cottage in a well.groomed form, using exclusively manual tools. It is convenient to mow grass with an ordinary oblique in an open field when you harvest hay for the winter of the cow. For more point work in narrow places, I decided to use a trimmer for grass. I must say right away that I have the experience of using a gasoline trimmer for grass. A few years ago, I sold it with relief and forgot how a nightmare. The need to refuel gasoline, terrible vibration, starting from the fifth time (at best). all this, together with a large weight of the device, is a set of serious shortcomings for me.

The electric trimmer for the grass disappears due to the lack of a network in the country. Only the battery remained. For several months I studied the issue on forums and blogs. YouTube issued mainly commercials. I did not find examples of using 80 voltage tools at all, they completely write about devices with a voltage of 40 24 and 18 volts. But in 80 volta, the very juice and relish! The line of commercial garden tools from Greenworks with 82-volt batteries has no analogues at the time of writing this article-May 2021.

I studied the characteristics of competitors: Dewalt, Makita and some others. But he stopped at GreenWorks GD82BC (aka GT-160 or GC82ST, article 2101707), which works from batteries with a voltage of 82 volts. I’ll tell you why I chose him. You can consider this article to my feedback on the work of the battery motorcycle.

All characteristics of a trimmer for grass

We will consider the GS82BCK5 model from the GreenWorks commercial line, which is equipped with the GC82C charger and GC82B5 battery. Differs in a D-shaped pen, about which I will talk in detail below.

List of characteristics

• An electric beast engine with an upper location;
• The speed of rotation of the cutting part 6000 rpm;
• Straight steel shaft;
• Light weight. 8 kg.;
• Coil with autopods of fishing line with a diameter of 2 mm.;
• Speasing width. 410 mm with proper installation of a knife on the lid;
• Battery life up to 80 minutes from 5 a/h battery;
• Fuse and protective casing of the cutting part;
• Engine protection from overloads;
• The ability to work with a saw disk;
• Work from 82V battery compatible with other devices from the 82V line;

On the protective casing (in the photo it is wrapped in paper tape) there is a knife. a cutter cutter, which can be installed in two positions. on a working diameter of 36 cm or 40 cm.

A pen

The handle determines the scope of a trimmer for grass. D-shaped closed handle is convenient when mowing grass in hard-to-reach places. Installed mainly on light trimmers. In this case, I would not call it easy. 8 kilograms are not for women. But such a handle suits me due to the presence of these most inaccessible places.

The height of the handle is regulated. There is a groove for convenient fixation on the shaft.

In a model with a bicycle handle there is a speed adjustment. The rotation speed changes when you press the button. There is no such button in my model, the speed is constant.

Barbell

According to the seller of a local store, a non.vegetable bar is better, because when impacts, a load on the node connecting two parts of the shaft is created. Because of this, the compound may over time be damaged.

A weak place in such a bar. lamb connecting the connective part. It is necessarily “flying” over time, you have to change the bolt with a nut, then you will constantly walk with the end key in order to better squeeze the clamp.

The collapsible shaft is more convenient in transportation, but is present only in amateur and semi.professional series. In commercial models shaft solid. It is more difficult to push the braid into a passenger car.

I do not plan to constantly carry a trimmer for grass in the car. It will be used about 2 times a month, 10 times a year. For this, you can tolerate the inconvenience of transportation. But if you decide to buy a trimmer for grass with a collapsible bar, I also recommend ordering a large bag for a scooter on Aliexpress in order to carry a disassembled braid in it in a passenger car and do not dirty the salon or trunk.

The whole bar is heavier than the collapsible. Inside, she has a rotating shaft, which transfers torque from the upper engine to the gearbox.

The location of the engine

Less powerful models are made with the lower engine. This unloads the upper part of the braid and distributes the weight evenly: a heavy battery on top, from below. engine. There is no rotating shaft, which also reduces weight and cost. Only wires pass inside the bar. The given power is higher.

In commercial devices, the manufacturer decided to place all the key components at the top. This allows you not to take care of protection when mocking wet grass. Also, the ventilation filter of the engine is also not clogged with wrapped mowed grass.

They say that the trimmer for grass with the lower engine arrangement quickly clog ventilation grilles that need to be constantly cleaned. Moisture hit for these engines is non.hazardous, it is rather dangerous to get water into the batteries, which can disable them.

It is necessary to lubricate the cumulative oil nodes more often.

Battery and charger

The GC82C (2914707) and the GC82B5 battery (2914607) were charged with the trimmer. Unfortunately, when ordering in the DNS, you cannot find out the date of production of devices. I was sent the 2017 battery. I sincerely hope that it will last a fairly long time. After all, the guarantee is only 2 years old.

The charger is equipped with a fan, which automatically begins to work when charging. Strongly stinks with plastic. I don’t understand why the Chinese cannot take plastic without smell for production. The model is still not cheap.

And it is better, of course, to have a second battery. But it (at the beginning of 2021) may scare away.

The weight of the trimmer for grass assembly with the battery is 8 kg. The battery weighs 2.5 kg separately. This is a lot if you have a thin physique and you decided to work continuously for an hour.

Ergonomics

Is it convenient to mow with this trimmer, I will find out over time. I’ll tell you my feelings by the end of the season and complement this section.

Working hours

By the end of the season I will write the results of the experiment with the old battery.

Reference: The operating time of the battery devices depends on the characteristic “amperes”. The higher the figure, the longer they work. I recommend taking 5 ampere batteries. They are more profitable than 2 amperes in all respects.

What types of electrimmers are?

All electric trimmers for the grass can be divided into groups according to engine position:

Electrimmers with the lower location of the engine are equipped only with special heads for a fishing line for a trimmer of a certain thickness, the installation of other types of cutting tools is not provided. Electrics with the upper engine are equipped with a straight or curved rod.

In the first case, the role of the shaft is played by a steel rod, therefore, the installation of all types of cutting tools is permissible, in the second case, the installation of only a trimmer head is acceptable, because the shaft function is performed by a steel cable that is not designed to transmit a large torque.

You will find more detailed information on the type of electricity here.

Types of coils

3 types of coils are installed on electric trimmers for grass, namely:

Automatic and semi.automatic devices are made in the form of a drum (foundations), into which they insert a spool or a bobbin, that is, not the entire coil is attached to the electric cost, but only the drum, while mechanical are both whole and collapsible.

Therefore, replacing the coil and replacement of a spray with a fishing line can be either one or two different operations.

Any types of trimmer heads are installed on electric ships with the upper engine, however, only semi.automatic coils are suitable for apparatus with the lower engine location.

This is due to the design features of such trimmers, because a full.fledged replacement of the head at home is not provided, and the price of a good coil is often not much less than the cost of the electrimmer.

In addition, the coils for electric core with a straight and curved bar are not interchangeable, because they have different threads.

Procedure

A complete disassembly of an electric trimmer for grass is a set of actions that can be performed separately, for example, to remove only a gearbox or shaft. Therefore, we will talk about the procedure for a complete disassembly, and if necessary, you can fulfill only those stages that are needed in your situation.

In addition, where the procedure for disassembling not only a separate part of the electric ships is important, but also the entire device, we will leave Комментарии и мнения владельцев, this will help you avoid errors and speed up the analysis of the tool.

We will also give separate instructions for those who have acquired an e.it.retaid trimmer for grass with the lower location of the motor, because in their device it differs from the devices, the electric motor is installed on top.

To disassemble the trimmer for the grass, the motor is located on top, adhere to the following sequence of actions:

• Remove the protective casing and a gearbox (a direct barbell) or a shaft with a bearing (trimmers for grass with a curved bar);
• disassemble and remove the bar;
• Open the body and remove the engine and wiring elements.

How to remove a protective casing and gearbox or shaft with a bearing

On devices with a straight bar, the protective casing is always mounted to the bar through a special mount to remove it, unscrew the screws that hold this detail.

Then unscrew the screws connecting both halves of the fasteners (this part is indifferent to parts of the models, so it can only be removed after dismantling the gearbox) and remove it.

In order to disconnect the gearbox, weaken the screw that tightens the part of this part and performing the function of the clamp sitting on the bar with a regular key, then pull it off the bar.

On the models whose rod is curved, act like this:

• unscrew the screws, screws or bolts that attach the casing to the support;
• remove the casing;
• unscrew the self.tapping screw connecting the support to the bearing, and the bar;
• Pull the support.

How to remove and disassemble a bar

To dismantle the bar, perform the actions described in the previous section, then:

• unscrew the fasteners of the transition coupling and separate both halves of the bar (only for models with a detachable bar);
• twist one or more screws fixing the bar in the housing;
• Pull the bar the whole or its back from the body;
• Pull the shaft from the bar or both of its halves;
• On some models you can even pull out textolite inserts-bearings.

How to open the body and pull out the engine

Understand all the screws connecting both halves of the housings or electric screwdriver, on some models they are screwed not on one, but on both sides.

If the halves of the case are connected by some inserts, then carefully elongate their locks with a knife, then, laying one of the halves on the table, lift and remove the second half.

If you do not put the case on the table, then it is likely that the engine and launch button will fall out and get damage. To extract the engine, grab it with your fingers and smoothly pull it out of the half of the body. Do not damage the wires, so then pull out the wiring button after it.

How to disassemble an ethletric trimmer for grass, the engine of which is located below

The procedure is similar to the analysis of the case described above. Unwind all the screws connecting the bar with the motor unit and handle, then separate the handle and the motor unit. If the motor unit does not work out, then it is connected in the reel area, so remove the trimmer head from it.

Remember, approximately half of these trimmers are made in such a way as to make it difficult to disassemble and repair at home, because this increases the sales of new equipment, which means that manufacturers are profitable. This fully extends to the coil.

If it is fixed on the shaft only with the help of the screw, then it is not difficult to remove it, it is enough to jam the tongues of the latches and separate the lid from it, then unscrew the corresponding screw.

If, in addition to the screw, it is planted “on hot”, then to remove it, this part will have to be broken, and then install a new. details on how to remove the coil on electric coshes of this type, read here.

If you did not manage to disassemble the motor unit, although you unscrewed everything in sight, then remove the coil and unscrew the fasteners that is not visible in the usual state. Then put the block with one half on the table and pull the second half.

Pull the engine with wiring in the same way. Remember, some of these electric cos are equipped with an aluminum sliding or non.sliding bar, inside which wires are laid. To pull the wiring from the bar, disconnect the terminals or solder the wires from the engine, then pull them out of the tube.

Due to the simple design, to disassemble an electric trimmer for the grass is not difficult, for which a minimum of tools is required, usually there is enough suitable screwdriver or electric screwdriver with a set of bit.

Do not lose self-tapping screws, because once you still have to assemble the electric costs, and without a regular fastener to do it problematic.

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.

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.

How to redo a trimmer for grass from fishing line to a knife?

If your device belongs to those on which you can install a knife or disk, but you bought it only with a coil, then to remake to work with a knife, you will need to buy:

• flange washer under the knife;
• pressing washer;
• gearbox;
• nut;
• Protective plastic casing of the corresponding size.

Remember, the flange washer needs to be purchased by detailing, in which its article is indicated. When selecting a “eye” there is a great chance to make a mistake and take a part that is not suitable for your trimmer. All other details are universal.

In this section, we prepared video videos in which it is shown how to change the coil from fishing line to a knife or disk (mill) on various trimmers.

How to redo the cutting mechanism from fishing line to a knife:

How to change the coil in the gearbox Motokos:

And one more video instruction on how to install knives or disk, if you decide to replace a coil with a fishing line with them:

Characteristics of the model

Before us, according to the documents, a battery trimmer for the grass of model 2101207. The device (I quote) “can be used by children aged 8 years and older, as well as persons with limited physical, sensory or mental abilities or with a lack of experience and knowledge, if they are properly instructed on the safe use of the device”.

The lower part of the trimmer for grass with a cutting head

The cutting element is a nylon fishing line for a trimmer with a diameter of 1.65 mm, the head with automatic fishing. The engine is located at the bottom of the device.

Weight (with a battery) specified in the specification. 1.7 kg. In all online stores where this product is presented, indicate the number 3.1 kg, but this is clearly a lot of the device along with the packaging. When choosing, I focused on these data, so the mass declared in the specification surprised me. I checked out of interest: my old Bezmen showed about 2 kg.

Battery

The battery-ion battery, 24 V. The battery and charger are included.

A trimmer for grass in China has been produced, the warranty period is 2 years. (I bought on Ozon). In the GreenWorks corporate online store, this model in the same configuration costs 8590, and in Leroy-I now looked at the site and did not believe my eyes-5000 (when I chose a trimmer for grass, the price was definitely different).

Made in China, guarantee 2 years

In a word, extremely simple and safe in operation, but not a particularly powerful model. Let’s see how it works, what it is capable of, what advantages have and what disadvantages have.

The advantages of this trimmer for grass

First. it is really very light. For me it was the weight that was one of the main arguments in favor of this model. The choice was between the two batteries from Greenworks, but the second. with all its unconditional advantages. 2 kg heavier, and these 2 kg became decisive.

Now I understand that the decision was absolutely correct: from this trimmer for the grass after half an hour of work, the hands from tension begin to tremble. For the first time it was quite difficult, then she got used to it, got used to it, trained. Of course, for those who already have experience with a similar tool, such a problem will most likely be irrelevant, but inexperienced comrades like me to start with the easiest options. now I’m sure of this.

The handle has a fixed position, but is very convenient

The second big plus is convenience. I doubted a little, choosing this model, whether it would be comfortable to work with it: her handle has a fixed position, the length of the bar does not change either. But it turned out that there are no problems. in any case, under my 169 cm of height, this trimmer for grass is ideal.

The absence of wires and the freedom of movement associated with this is a plus not just large, but very large. I tried once a few years ago to mow a neighboring electric trimmer-I was very annoyed by the need to constantly control my movements and the location of the wire. And here you can throw all the restrictions out of your head and just go to mow the grass where you need.

No wires! Just go and mow where you need

In principle, if you are used to doing this, moving methodically and evenly in a strictly given direction, for you such an advantage of the battery device will most likely will not play. I know that many trimmers wires do not annoy at all. But I-either due to small experience, or because of character characteristics-methodically and purposefully does not work. I can turn around and go the other way. I can bite the flower garden, and then see that the grass has grown under the trees. and go there. In general, freedom of movement for me is important. If for you too, choose a battery technique.

A pleasant surprise was that my baby-trimmer for grass copes even with rather complex tasks. Of course, I did not try to mow grass in growth, but subjected some tests to them.

Malfunctions and their elimination

Electric and gasoline trimmers have typical breakdowns and malfunctions. For devices running from an internal combustion engine, this is:

• problems in the carburetor;
• engine breakdown;
• problems with the fuel system;
• breakdown of the gearbox, starter, muffler;
• blockages;
• Air filter breakdown;
• Problems with ignition coil.

Electric units have specific breakdowns:

With simple problems, you can make a trimmer repair for grass with your own hands.

Why is a trimmer not starting for grass

The most common reason that the unit does not start is the use of poor.quality fuel. The choice of gas stamps below AI-92 can disable the lawnical mower. If high.quality fuel is used, you need to look for other reasons. To do this, carefully check all nodes and systems. The checks are subject to:

The device may not start after prolonged downtime. Before turning on a trimmer for grass, you need to study well the instructions for operation. The solution of many problems is indicated in it.

If it stalls when you press the gas

There are several reasons why a trimmer for grass stalls when gas is pressed:

• The first reason is the dumping of the carburetor.
• Fuel valve.
• Fur valve blockage.
• The weakening and sagging of the carburetor cable or sagging of the fuel intake hose.

So that the described problems with the lawn mower do not arise, you need to carefully monitor the condition of the device and its blocks. Timely cleaning, washing of the unit and spare parts allow you to increase its life.

Starter breakdowns

The most difficult breakdown of the starter occurs when the rope is broken and winding it into the flywheel of the operating engine. As a result, the spring may burst and the pulley plunges. In this case, only a complete replacement of the spare part will help. This breakdown rarely occurs. often:

In this case, it is easy to fix the starter yourself. The manufacturer has prepared a step.by.step instruction for this.

REDUTOR Repair

Caring for the motorcade gearbox consists in the timely lubrication of the unit. The absence of one can lead to rapid wear of the gear and jamming of the gearbox module.

The main malfunctions of the trimmer gearbox for grass:

• severe heating of the gear component due to the use of low-quality lubrication or its absence;
• shaking of the shaft during the rotation of worn bearings;
• staggering or flowering from the bar of the gear ratio as a result of damage to the case;
• Lack of rotation of the output shaft with a knife due to wear on the teeth on the gears.

Most of the malfunctions in the gearbox are associated with the destruction of bearings.

This happens due to the use of low-quality lubrication or its complete absence. Another reason for the failure of the gearbox is the operation of a trimmer for grass at the limit of its capabilities and the hit of foreign objects. To replace a faulty bearing, a gearbox is disassembled.

Features of the repair of electric models

Electric models of trimmers operating from the network have several main blocks:

Each electrimmer block has specific problems. In the mechanical part, they depend on the presence of a fishing line used as a cutting element. Reasons for the termination of work:

You can identify the problems of the electrical part of the electrocos using special tools:

To eliminate problems, a soldering lamp is needed.

• a malfunction of the power cable;
• problems with an outlet and fork;
• the failure of the control handle;
• combustion of the starter winding, engine replacement is required;
• Contact breaks can be corrected independently using a soldering lamp.

How to adjust the carburetor

The module adjustment is carried out by the manufacturer. During the operation of the device, after repairing or cleaning the module, it becomes necessary to adjust the carburetor.

Carburetor setup does not require replacement of spare parts. Debugging is done with the help of 3 screws that are available in the design:

• L. controls the supply of fuel at low speeds;
• H. controls the fuel consumption and temperature, and is also responsible for supplying gasoline at high speeds;
• T. is responsible for the idle engine.

Adjustment of the carburetor of the trimmer for grass is carried out after the engine warms up. For this, 10 minutes of operation of the device at idle will be enough. The rotation of the mowing head at idle speeds allows you to begin directly to debug the screw t. It is turned counterclockwise to the cessation of rotation. Then the screw h is scrolled to the right and left to find the position in which the idle speed will be maximum. The screw is turned off on ¼ full turnover counterclockwise from the found point, this will be the working position.

According to the same technique, the screw l. After repairing the carburetor, the module is necessarily tuned so that the device works correctly.

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Repair of an electric trimmer for grass

The electric trimmer for the grass replaced the usual spit. Today, most urban residents do not even know how to use a “rare” tool correctly. A modern person does not need this, because he has an electric counterpart. But if an ordinary braid had to just sharpen from time to time, then things are more complicated with the power tool. Equipment requires a certain care, and if a malfunction occurs, the repair can lead to big expenses. However, it does not always make sense to carry the failed tool in the workshop: often you can cope with the breakdown on your own.

To understand what exactly can break in an electric cost, first you should figure out how it is arranged.

Ethletric trimmer for grass usually consists of the following elements:

The current is supplied to the power unit through the connector on the case, to which the cable is connected. Inside the rod is hollow. it plays the role of a protective shell for a flexible shaft, transmitting torque from the motor to the coil of the trimmer for the grass. The handle located on the case has a button, when pressed on which the device turns on.

The described design is considered a classic. However, there are options for executing the tool in which the motor is located in the lower part near the coil, as well as the battery versions.

Repair of an electric trimmer for grass with your own hands: Frequent causes of breakdowns

One of the scenarios in which the tool is out of order is the mowing of a very neglected area. In this case, the equipment is affected by increased loads and often fails of the power unit. A breakdown of bearings or coils is also possible.

And when work is carried out in rainy weather, electrical equipment can simply close. Also, do not forget about a certain resource of individual assemblies of the tool, which are not designed for constant use. The device requires timely inspection with the replacement of worn parts.

Repair in some cases can be carried out independently, without the involvement of third.party specialists, the cost of which is often considerable.

Repair of the launch button

If the tool does not respond to attempts to turn it on, two options for a malfunction are possible. a cable break inside the handle or the failure of the inclusion button.

Important! Make sure that the device is disconnected from the network if it is a stationary type. In the case of the battery version of the instrument, the power terminals should be first disconnected, and only then proceed to repair.

In order to understand what exactly the breakdown is, you need to disassemble the handle.

Having gained access to the inside, you should, armed with a multimeter, measure the resistance of the button. If it is absent after pressing, the button must be replaced.

You also need to check the contacts of the connection of the power cable with the contact group. Often the need for such a measurement disappears, t. to. The cliff can be found with the naked eye. In this case, it must be eliminated by soldering.

In the absence of a multimeter, the same work can be done using an indicator screwdriver. To do this, after disassembling the body of the power cable handle, it is connected to the network and the phase is checked by a screwdriver before and after the button. If zero comes to the button, the fork in the outlet can be turned and measured again.

Attention! You should be very careful when checking the presence of a phase in this way. There is a possibility of gaining electric shock!

Checking the electric motor

If the button and cable that feeds the tool will be serviceable, you should go to the diagnosis of a power unit. To do this, disassemble the case in which it is located. It is usually necessary to simply unscrew several bolts or screws and remove the lid.

First of all, you need to check the condition of the collector brushes. The wear of this node can lead to unstable operation or to a complete stop of the engine. If the brushes are in satisfactory condition, you should check the winding of the motor for a short circuit.

For this operation, it is necessary to completely remove the engine, and then check all the collector plates in the mode in the mode. The device should not show significant deviations in measurements.

The second check is the “ringing” of the rotor winding to the “mass”. To do this, you need to connect one of the multimeter contact to any collector plate, and the second to the “mass” of the rotor. In this case, the resistance measurement mode should be more than 1 MOM. If there is no short circuit, the device will show a very large meaning.

If, according to the results of these checks, all the parameters turned out to be normal, you need to measure the resistance of the stator winding. Indications should be similar, as in the case of the rotor. If not, then the malfunction lies in the stature.

If there is an interval circuit in the engine, it will not be diagnosed in this way. However, this problem can be identified by observing the trimmer for grass in action. An indirect sign of such a malfunction will be a decrease in the power of the work and overheating of the equipment.

When, as a result of diagnosis, it became clear that the engine was “burned out”, it would be easier to notice it on a new. In the vast majority of cases, repairs, consisting of rewinding, will cost as much as a new power unit.

If the engine is installed on the engine, then it will turn off the power when overheating. If the problem is the malfunction of the relay itself, this can be identified using the same multimeter or tester. With a cold engine in good condition, the relay should pass the current.

Mechanical malfunctions

Such problems include a breakthrough of the flexible shaft. It is easy to recognize it. the motor works, and the coil with a fishing line does not rotate.

The reason for the breakdown is the unfair care of the tool, which consists in the timely lubrication of the inside of the bar. In the absence of the desired amount of lubrication, the shaft will be subjected to excessive friction and the cliff will become a logical result.

This breakdown is corrected by replacing the shaft, which can be removed by disconnecting the upper part of the trimmer for the grass from the bar. If the second part of the shaft is not extracted, disconnection and lower.

When installing a new shaft, it should first be lubricated.

Such a malfunction can occur only with a classic layout of parts. In devices where the power unit is located in the lower part, there is no flexible shaft. However, with such a layout, the role of the gear ratio is played by a bearing located on the engine shaft closer to the place of transmission of the moment. In this situation, the bearing must simply be replaced with a new.