Setting a carburetor of a Chinese trimmer for grass with your own hands. Carburetor adjustment…

Device and adjustment of the carburetor on benzocos and trimmers

Check if the start button is turned on, whether the oil button is enough, whether gasoline is poured into the tank. If the motor is still not starting, rinse the gasophiller (sometimes it should be replaced if a large blockage is detected), check the candle for performance, clean the air filter.

It did not help? Set up the carburetor air damper to position C, this solves the problem of fuel transfusion. In the case of the “persistence” of the motor, just drain all the fuel from the system and fill the new one, making sure that it has proper quality. Making all these processes solves the problem of launching a motor in 80-90% of cases.

If the motor refuses to work at idle, first of all adjust the carburetor and rinse the air filter. this in most cases solves the problem. If the situation is repeated, then most likely you poured poor fuel into the fuel tank, then drain it and fill the tank with a new.

How to get a lawn mower and make it work if engine speeds are not gaining, and it stalls? First, check if the cutting shaft is clogged with waste and weeds. If everything is in order with the shaft, wrap the air filter or change it to a new one, if the first seemed to you too contaminated. By the way, washing the air filter and gasoline should be washed, which makes the gasket more elastic and prevents the drying of the material.

If, having done these procedures and pressing the starter for the lawn mower, the lawn mower stalls again, then the case lies in an incorrectly adjusted carburetor device. Read the last section of this article, it tells how the carburetor is adjusted on the benzokos.

If there is no spark, put a spare candle to check what exactly is the matter. Когда запасная свеча при установке правильного зазора также не выдает искру, значит дело в оборудовании косы для травы. Repair of the lawn mower in the event of a malfunction begins with the check of the wire leading to the candle.

Carburetor adjustment

This aspect is always needed when the lawn mower is set up. A correctly configured carburetor is the key to the successful operation of engines for the lawn mower.

Despite the fact that the question of how to adjust the carburetor on a benzocos, it seems, to beginners are incomprehensible, but the repair of the lawn mower often ends with this procedure, since the reasons lies in the wrong adjustment, and the repair of the lawn mower and the methods of eliminating them in the settings for configuration. By the way, the run.mowing is also involved in the adjustment of the carburetor.

To understand how to correctly configure a gasoline carburetor for motorcycles, you need to know:

  • The device contains three screws: right (l), lower (t), left (h).
  • A properly configured carburetor operates on idle evenly and without changes with cold and hot motor, as well as with a sharp descent or set of revolutions. The screw t is responsible for the idle.
  • The screw l is responsible for how much the fuel mixture will enter the combustion chamber at low speeds. When adjusting, the screw turns counterclockwise by a quarter turnover.
  • Fuel adjustment at high speeds occurs by screw h. For configuration, give out full gas, opening the throttle. Turn the screw clockwise until you hear a speed drop. Then, scroll through the screw in the opposite direction so that the engine works unevenly, after which begin to slowly turn the screw clockwise until you start to hear the smooth and uninterrupted operation of the motor.

The correctness of adjustment is determined even by the color of the working part of the candle. If the tuning of the carburetor is made correctly, then the candle will be clean, without soot.

How to sharpen a knife or disk for a gas station?

To sharpen a knife or disk for mowing equipment, know that a good disk or knife must be sharpened so that the edges become sharp, but the metal was not overheated. The sharpened cutting element will provide easier removal of the grass surface. Also, the sharpness of the disk or knife affects the number of plants that will be eliminated by one capture.

In general, the maintenance of a gasoline braid for grass provides for constant cleaning of equipment after work, checking the quality of oils and gasoline, as well as a properly configured carburetor. Do not pour doubtful additives and the like into the lawn mower. Regularly make the reducer lubrication and lubrication of driving elements to prevent problems. It is recommended to update lubrication, at least every 1000 hours of work.

Causes of carburetor breakdowns

When operating, motorcycles (for example, “Patriot” or “Union”) can be damaged, and the user will need to repair it on its own or with the involvement of specialists. This can happen for a number of reasons. One of the most common is non.compliance with the rules for using the device. If, with prolonged operation of the trimmer for the grass, the carburetor was not used and adjusted, the device breaks.

HOW TO ADJUST RYOBI TRIMMER ENGINE CARBURETOR

Another cause of the breakdown is an incorrectly prepared fuel mixture. Often the owners of the equipment buy oil and prepare fuel according to the recommendations written on the package of combustible materials, which is incorrect. When preparing fuel, you need to consider the instructions for the operation of the Motokos itself. In addition, the mixture “by eye” should not be made, since incorrect proportions also lead to breakdown of technology.

Most of the breakdowns of carburetors are equally characteristic of motorcycles of different brands, whether Echo, “cedar”, Homelite or the device of another manufacturer.

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Principle of operation

The order of injection and filtering of fuel in the engine of the lawn mower is next.

  • With the help of a throttle, the amount of air supplied to the diffuser is set. The more air is supplied, the more oxygen needs gasoline for combustion, and the greater the power released in the form of heat. The energy of the heat is further converted into a mechanical.
  • The membrane pump pumps the required amount of gasoline.
  • Next, gasoline passes through the engine fitting.
  • Fuel passes through a retractable and exhaust valve.
  • Fuel is filtered using a mesh filter.
  • Through the needle valve, it also enters the camera with the membrane.

The stages of the carburetor is as follows.

  • Air enters the pipeline with an air conditioning. The damper sets the desired air flow intensity.
  • The diffuser is narrowed in the node of the gasoline bumping. this is necessary to give a higher air flow rate.
  • Fuel passes through the bastard compartment and passes the jet, falls into this narrowing of the tube. The float compartment doses the supply of gasoline. In this compartment, the pressure is in a state of equilibrium. In a narrowed tube, it decreases. Due to the difference in both values ​​of pressure gasoline and passes through the jetler.
  • Accelerated stream sprays gasoline, converting it into aerosol pairs. The resulting gas-air mixture is ready for a rowing in the combustion chamber.
  • Having passed through the fuel pipeline, this mixture is in the cylinder of the carburetor.

Conclusion: To set the required power, first of all, you will adjust the rate of combustion of fuel using an air damper. If the gap is too small, and the oxygen in such a mixture is less than 10%. the fuel does not burn, therefore, the engine will not start or immediately staller.

In the case of buying a Chinese trimmer for grass, it is worth considering that it differs little from European- the same 2- or 4-stroke engine and drive.

However, the quality of the details is saved, forcing the consumer to change them more often. Check what compatible details offer non.Chinese companies for your device.

The main problems

Malfunctions of the carburetor Motokos or trimmer for grass, despite the relative simplicity of their elimination, sometimes require a long search by excluding. The main reasons are as follows:

Flamming fuel supercharger

The most repeating breakdown is wear, rupture of the membrane. As a result, its lavation. Fuel moves are not sealed at certain stages of the engine cycle. The reasons here are as follows:

  • You have been working on a motorcycle or trimmer for too long without a break;
  • Poor.quality fuel was seasoned;
  • Wheelled gases fall into the pulse channel.

A deformed membrane is fraught with several bad consequences:

  • not enough gasoline or oxygen in the created combustible mixture;
  • the launch of the motor occurs after 10 or more unsuccessful attempts;
  • the engine knocks, clats during operation, and t. D.;
  • The working piston is deformed.

As a result, the internal space of the fuel pump is contaminated from the side of the pulse channel.

Ground of a mesh filter

The reasons for the clogging of the mesh filter are poor.quality fuel cleaning, damage to the hose and/or the injection head.

The failure of the adjustment lever

Wear of the contact edge of the lever. a consequence of not completely purified fuel, into which grains of sand or particles of clay, metal or other inclusions that are not soluble in liquid hydrocarbons fell. A problem with fuel injection appears, the motor does not function with interruptions without load.

The inlet needle is spoiled

The inlet needle breaks due to the presence of metal and stone particles in gasoline. As a result, the saddle of the intake needle tightly adjacent to it, the fuel mixture flows. In the combustible mixture created by the carburetor, there is too much air, which is why the motor can “sneeze” during operation. Finally, the needle can stop due to poor-quality gasoline, or the unit was idle for a long time.

Clogging the adjusting space

Deposits may accumulate in the adjustment compartment. The needle does not completely cover the hole, and a lot of gasoline enters the fuel chamber. the motor pours it, perhaps floods the spark plugs. Because of this, the gasoline mixture contains an increased number of vapor of gasoline. The efficiency falls noticeably.

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The adjustment membrane is spoiled

The membrane is often deformed (sometimes torn) due to continuous operation of motorcycles or trimmer for grass for several hours. If you abuse such a “shock” mode of operation, damage to the membrane occurs more often. New breakdowns will be sprinkled from a cornation of abundance:

  • the piston will break;
  • The number of attempts by the unsuccessful start of the engine will increase sharply;
  • The fuel mixture will contain too little gasoline;
  • Useful (thermal) power will drop sharply.

The inlet regulatory lever sees

Sequeling of the adjusting lever. a consequence of the incorrect installation, random flexion. Contactive line will find an incorrect position. This will violate the additional injection of gasoline.

The damper has worn out

Throttle and air conditioning are unusable due to admission to the air flow of dust, metal particles, etc. D. Damaged shutters are similar to details subjected to streaming with sand. Due to wear of the damper, the efficiency of the motor decreases, breakdowns are detected. The piston and cylinder wear out.

The shutters become unusable due to incorrect service of the air filter or its breakdown.

In some cases, this filter is simply not suitable for your model motorcycles or trimmer for grass. In the end, the shaft of the motor will suffer. its pieces fall into the engine channels, which is why the piston will be broken.

The carburetor cannot be adjusted

The fact that the adjustment is too rough (it is not possible to accurately set the parameters) are to blame for the adjustment screws. The manufacturer Motokos or trimmer for grass can put excessively thick and hard springs. You can find others either in workshops where such equipment is repaired, or purchased from any dealer or official representative of the company who released the engine for your trimmer for grass or mechanical braid for grass.

The primer broke

Primer-a manual mini-pump for forced swinging fuel into a carburetor. For a successful start of the motor, it may be necessary to pump 20 ml of gasoline manually.

Carburetor for a trimmer for grass. How to adjust the carburetor of a trimmer for grass.

On trimmers, in addition to electric motors, gasoline internal combustion engines are installed. This mechanism requires special attention, since if it is incorrectly set up, it will either refuse to work or work with interruptions and power loss. Basically, the engine setting is to adjust the supply of fuel, and this is done using a trimmer carburetor for grass.

The standard design of any gasoline trimmer for grass must include a fuel system, the basis of which is the action of a standard carburetor. Its device and the initial principle of action are almost the same for all motos, regardless of their design characteristics and purpose.

The carburetor of the motorcycles consists of an entire.metal aluminum corps, which protects the internal components of the node from moisture, fine debris and dust. In the lower part of the case, a built.in diffuser is provided, the second name of which is “Venturi’s nozzle”. The main function of this regular part is the supply of air in the amount that is required by the fuel node to enrich the fuel. Diffusure work on a simple principle: the smaller its diameter becomes, the more intensively the air is absorbed. This is due to the fact that in the zone of the smallest diameter the level of air discharge becomes maximum.

The upper part of the built.in factory diffuser is pre.equipped with fuel tubes, according to which, under the influence of air, the fuel mixture is delayed. The remaining parts of the carburetor: regular adjusting screws and fuel pump can be located both inside and outside the carburetor.

The device of the carburetor Motokosa includes a throttle, the main task of which is to adjust the volumes of absorbed air. The larger the amount of air, the higher the rated power of the power unit of the trimmer for grass. Another damper function is to relieve the cold start of the engine. If the lawn mower is started for the first time after prolonged downtime, then the damper must be closed. Immediately after starting the motor, the part must be opened, otherwise the ICE will stall.

The carburetor for a trimmer for grass is equipped with a pulsed channel, which connects the internal cavity of the ICE crankcase with the pulse chamber of the pump. The piston located in the motor cylinder creates reciprocating movements, which leads to phased changes in pressure inside the crankcase. At the same time, a membrane is set in motion. Thus, the action of the pump is completely synchronized with the operation of the power unit.

A standard carburetor membrane takes an active part in the fuel suction. In the fuel node, it gets through the fitting. After that, the fuel passes through the built.in intake and exhaust valve, then through the mesh filter and fuel tube. Then the fuel flows next to the needle and gradually fills the camera equipped with a control membrane.

The standard valve of the carburetor trimmer for the grass is connected to the membrane using a lever. Below the built.in membrane is a cavity into which the air is absorbed through a special hole.

The carburetor for the lawn mower is working on this principle in stages. This ensures the continuous operation of the fuel unit and the uninterrupted supply of fuel in the cylinder of the standard power unit.

Когда требуется настройка карбюратора бытового триммера для травы? It is necessary to adjust the built.in carburetor of a trimmer for grass with:

  • running a new engine, during which from 4 to 5 liters of fuel mixture were used;
  • sharp changes in the weather;
  • changes in air vacuum. for example, when a lawn mower is often used in mountainous areas;
  • prolonged simple trimmer for grass;
  • intensive growth of loads on the power unit Motokosa;
  • arbitrary twisting of the built.in adjusting screws of the carburetor. this becomes the cause of increased vibration of the internal combustion engine;
  • change in the quality of the components of the fuel mixture;
  • transfusing a fuel by a carburetor, a result of which is an increase in fuel consumption;
  • the regular appearance of the thick layer of tarry deposits and soot on the surface of the electrodes of the standard spark plug of the trimmer for grass;
  • starting the engine and its arbitrary shutdown or slow speed;
  • lack of fuel intake into the cylinder of the power unit;
  • increase in the volumes of ejected gases.

The lack of timely tuning of the carburetor threatens the serious breakdown of the trimmer for the grass, up to the full failure of its factory engine.

Do.it.yourself carburetor adjustment. Periodic adjustment of the carburetor of the trimmer for grass should be performed on the served and completely serviceable power unit. Before starting the procedure, the operator must thoroughly rinse the details of the internal combustion engine and inspect its CPG for the presence of burrs or other defects. In addition, you will need to clean or change the spark plug, as well as rinse the filter elements in the design of motorcycles.

During the tuning of the carburetor, the engine of the lawn mower should operate under a certain load. It is best to install a cord of the corresponding diameter or cutting knives on a trimmer for grass.

After the installation of the cutting organs, the operator must start the ICE of the trimmer for the grass and leave it to work for about 10 minutes. If during the operation of the power unit at idle, it was noticed that the cord or knife rotates, then it is necessary to reduce the speed created by the engine. To do this, turn the lower regulator, often indicated by the letter “t”, to the left side, until the installed cutting organ is completely stopped. The further settings of the fuel node are as follows:

  • The “l” regulator, located on the right, is responsible for the enrichment of the fuel mixture by air during the operation of the motor at low speeds. The position of this screw must be configured first. To do this, the operator will need to achieve maximum engine speed when working at idle. for this you need to alternately turn the “l” screw in the right or left side. As soon as the maximum revolutions are achieved, the screw will need to be turned to 1/2 turning to the left;
  • The screw “t” or “LA” is necessary to adjust the idle. During its turning to the left, the power unit will decline, and when turning to the right, respectively, increase;
  • The H “H”, provided on the left, is responsible for the enrichment of the fuel mixture by air during the operation of the ICE of the Trimmer for high speeds. This screw is also needed to configure the power of the motor and the volume of the consumed fuel. The setting of its position is carried out by turning the screw to the right or left sides until the maximum permissible engine speed is reached. After that, the screw “h” will need to turn 1/2 turn to the left.

Carburetor device

The lawn mower (lawn mower) contains the basis. the case of aluminum, which houses the rest of the parts, coordinated as a whole. The carburetor housing has a diffuser. a move with internal channels through which air is pumped.

The larger the cross section of the diffuser, the more actively, oxygen is supplied along with the air-an oxidizing agent in which fuel burns (gasoline mixture).

Channels branching from the course of the diffuser deliver fuel, with which the heated air is mixed, which carries away the vapors of gasoline. Outside the main compartment of the carburetor are placed:

Principle of operation

The flow of air entering the tube with a throttle fabric intensifies or weakens depending on its position. From the fuel chamber, gasoline enters a special tube through a jetler. Float. a device that regulates the supply of fuel, its level determines the volume. Gasoline supplied through a jickler, under the influence of the pressure difference, is mixed with air. So it turns out a fuel mixture for engine operation.

note! The wrong fuel composition is due to a lack of gasoline or air. This means that you need to configure the throttle or the fusion position. The motor can stall due to the jet, but this is a more serious breakdown.

Adjusting the carburetor of the lawn mower

Setting up a carburetor of a lawn mower with three adjusting screws

Before starting work, you need to place the lawn mower on a flat stable surface. Remove the chain in the opposite direction. There are motorcycles with two and three adjusting screws. Two screws most often equip the tools produced in China. Consider the adjustment of the carburetor Motokos with three screws.

Setting up a carburetor of a lawn mower with three adjusting screws

Before proceeding with the adjustment of the carburetor of the lawn mower, you need to rinse the air filter. Cleaning is carried out with water with a detergent or soap, and if necessary, a new. Often in the poor work of the carburetor, scibberries are guilty. In order to prevent the filter, it is recommended to clean the filter after every 10 hours of operation of the tool. Do not forget to check the condition of the candle, if there is a dozen, you need to clean it. Candles are consumables and have their own resource. To ensure good operation of the engine of the lawn mower, candles periodically need to be changed. Next, we evaluate how well the carburetor is fixed to the cylinder-piston group. After the preparatory manipulations are completed, you need to start the motor. Let the engine work for 5-10 minutes. Then you need to identify how many adjusting screws on your tool.

There are the following adjusting screws on the gasoline trimmer:

Fuel supply adjustment

At first you need to slowly tighten the screw adjustment screw for the fuel mixture. You need to do this until the engine starts to stall or stalls. Following this, if the engine did not stop working, you need to turn the screw for a quarter of turnover, and if it stalled, then by half the turnover. Next, you should have a stalled engine. Then you need to open the throttle and see how the speed is gaining. Turn the screw for a quarter of turnover again. You need to scroll until the engine begins to confidently gain increased speeds during cuffing. This is the right time when the engine works most economically. There are times when adjusting this screw does not give anything. Often the reason is in the factory spring that is located on this screw. This does not happen to all the tools. And if the spring turned out to be defective, then replacing it will not be difficult. A suitable spring can be purchased at any construction store.

Cooper adjustment

Following the adjustment of the fuel supply, we are accepting for the adjustment of the idle. To do this, you need to adjust the corresponding screw so that the engine works slightly accelerated at small speeds. But it is necessary to trace, for the immobility of the reel with fishing line and knives. Before the start of their movement, several revolutions should remain in stock. The movement of the coil and knives can subsequently lead to the rapid wear of the clutch. Having noticed that the engine starts poorly, you need to increase the number of revolutions at idle. With an increase in revolutions, the fuel mixture is saturated with air, which leads to power loss.

The main signs of the proper idle work:

  • Revolutions for a trimmer head;
  • Uninterrupted operation of the engine even when the position changes (sharp rise or descent of the knife);
  • Calm operation of the engine at a cold move;
  • Lack of increased speed of hot engine.

Maximum speed adjustment

Further, for the full tuning of the carburetor of the lawn mower, it is necessary to adjust the maximum speed. It will not be superfluous to look into the instrument operating manual and see the maximum speed value. This amount will help to determine the tachometer most accurately. If such a device was not at hand, we set up by ear. Barely determining the maximum speed of revolutions by ear, we begin adjustment. A screw for limiting maximum revolutions will help in this matter. Control the engine operation at maximum speed. If necessary, reduce speed, weaken the fixing nut and unscrew the screw. If the turnover is too large, then you will need to screw the screw. These actions must be done in order to protect the engine from overheating. Scroll the screw until the clear even operation of the engine is established.

After the work done, if everything is done correctly, the stable work of the tool is provided.

Understand this by the following signs:

How the benzotrimer carburetor works and works

All varieties of carburetors produced by manufacturers of benzotrimmers are almost unrealistic to cover. But, since the design of this module, as well as its principle of operation, is largely similar between different models, you can make a generalized description of the processes occurring in the carburetor. This information will allow the user to understand the principles of the device, eliminate the malfunctions and properly operate.

The basis of the carburetor trimmer for the grass is an integral aluminum case. Below is a diagram of this block.

Below it, there is a diffuser, which is also called Venturi’s nozzle (18). Air is absorbed through this nozzle with a motor.

The smaller this hole, the higher the air flows, and the higher the level of its vacuum in the zone with the smallest diameter.

In the upper part of the diffuser are fuel channels (11,12). Through these channels, the air flow, adds gasoline. The fuel pump itself, nozzles and a system used to adjust the supply of a mixture of fuel with air can be built.in or installed outside.

The throttle flap (9) regulates the amount of air sucked into the carburetor. Its number affects the power that the engine develops. Damper (7) serves for cold launch. It must be closed if you are going to start the unit. After the engine has launched, it needs to be opened, otherwise, the motor will immediately stall.

The pulse channel (1) connects the impulse chamber of the pump to the engine card, namely, with its internal volume. The piston located in the cylinder, producing reciprocating movements, sequentially changes the pressure in the crankcase (vacuum or increase in pressure). Pressure drops make the membrane move (4). Therefore, the operation of the pump is synchronized with the operation of the engine.

The gasoline leaks from the tank occur precisely with the participation of the membrane (4). Gasoline enters the carburetor through the fitting (2). Further, its path lies through the inlet valve (3), the release valve (5), through the mesh filter (6), the fuel channel (10), passes by the needle (14) and fills the camera (16), which has a control membrane (18).

Valve (14) by means of a lever (17) connects to the membrane (18). The cavity that is located below the membrane is connected to atmospheric air through the hole (19).

The device is functioning as follows.

  • During the suction tact, a vacuum is created in the diffuser. This fact causes air leaks. The amount of air entering the carburetor chamber, as well as the engine power and the amount of its revolutions and the amount of its speed, depends on the position of the throttle.
  • At this time, a fuel from the chamber (16) is sucked through the nozzles (11,12), after which it is mixed with leaking air. Gasoline, mixing with air, begins to spray. Thus, a fuel mixture is created.
  • The finished mixture enters the cylinder, where it is compressed by the rising piston and is ignited at the verge of its point from the spark, produced spark plugs produced.
  • Since the volume under the control membrane (18) is connected to atmospheric air through the canal (19), the membrane goes up, opening by means of a lever (17) valve (14). After the valve is opened (14), a new portion of fuel enters the camera (16).
  • After the camera (16) is filled, the membrane (18) returns to its original position, and the valve (14) is closed.

Further, during the operation of the motor, all of the above processes are repeated. To adjust the number of fuel entering the diffuser through the nozzles, a screw is used (13). A screw (15) is also used to set up idle speeds. When twisting the regulators, the fuel mixture is enriched, and when twisting, the mixture impoverishes occurs. Also, in some models of carburetors, you can adjust the idle speed by the amount of the engine by the number. It is usually located on the outside and, when twisting, rests on the lever, fixed on the axis of the throttle.

Thus, using 3 adjusting screws, you can achieve maximum engine performance, as well as set up its uninterrupted operation at any ambient temperature, and even in mountainous areas.

The spring may interfere

My first attempt to adjust the gas mowing carburetor did not give anything, since the spring of the fuel mixture adjustment propeller prevented. The factory spring turned out to be too thick in a compressed state and did not make it possible to reduce the supply of fuel to the required level. I had to choose another spring and continue the adjustment after its replacement.

The adjusting screw for feeding the fuel mixture with the spring

In the photo above the factory spring, below the adjusting screw with a selected spring. I am writing about this, because I am not sure that this is an isolated case, and someone else may face the same situation.

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.

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:

How to Fix a Trimmer Carburetor

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:

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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.

Carburetor for a trimmer for grass. device, adjusting with your own hands

The carburetor is one of the most important assemblies of the lawn mower, the function of which is the preparation of the fuel mixture.

In case of sloppy handling of the tool, the carburetor may fail, which is why further work with a motorcycle is impossible.

To fix the tool with your own hands, you should study in detail the design, principle of operation and features of setting up the carburetor of a gasoline braid for grass with your own hands.

How is a gas mower carburetor?

The device of the carburetor is almost the same, both in famous German and Swedish motorcycle, and in Chinese.made tools. This node consists of such details:

  • Membrane fuel pump;
  • Adjustment system with atmospheric membrane;
  • Idle system;
  • A primer for pumping, which allows to facilitate the launch of the motor motorcycles;
  • Elastic plate with two valves;
  • Needle valve;
  • Dosage system with a rotating rotor;
  • Throwdoy damper.

Carburetors of modern motorcycles work according to a certain principle. The diagram below shows the movement of air and the fuel mixture in the design of the carburetor.

At first, air through the throttle falls into the tube, after which it passes to the diffuser. the place of narrowing of the tube, where the air flow becomes especially intense. From the diffuser of the air enters the float chamber, where it is mixed with the fuel mixture. After that, the fuel enriched with air is absorbed by the pipeline and enters the motor cylinder.

Adjustment of a trimmer carburetor for grass. how to configure correctly?

Before you configure the carburetor for motorcycles, you will need to clean all the air and fuel filters available in the design of the tool. Further adjustment of the carburetor is performed using three screws:

The correct procedure for adjusting the carburetor is as follows:

  • First you need to find stable low revolutions of the gas mowing engine. To do this, slowly turn the “l” screw clockwise and against it. As soon as you determine the optimal low speed for the engine, turn the “l” screw by ¼ turn counterclockwise;
  • Then you need to find the most stable operation of the engine at idle. To do this, use the screw “t”. Turning it clockwise, you increase the speed, and against it. lower them.
  • The last step will be the adjustment of the high speed of the gas mowing engine. To do this, you will need to press and hold the gas trigger, and at this time transfer the lever of the throttle to the extreme position;
  • After that, turn the “H” screw clockwise until you hear that the motor is as quiet as possible;
  • Then turn the same screw in the opposite direction until you hear that the motor is working unevenly;
  • Turn the “h” screw again clockwise until you hear the stable work of the motor.

After performing the listed actions, you need to check the engine of the lawn mower. In this case, special attention should be paid to his work at idle. If you have adjusted the carburetor correctly, you will notice that the cold motor is steadily, and the trimmer head has a large supply of move. In this case, the hot engine does not show high speeds and works steadily when pressing the gas trigger.

Adjusting the carburetor of a trimmer for grass Motokos with your own hands

Benzocosils, like all gas.tools for mowing grass, are not considered difficult to maintain equipment. They can and should be configured, repair with your own hands. So, for example, in five minutes of your free time, you can adjust the carburetor of a trimmer for grass.

Often, to configure the engine, you need to adjust the supply of gasoline, and this is done precisely by the carburetor of the gas station. Such a device requires special attention. If you use it, it may refuse to work or will perform its functions with errors and with a large power consumption.

Today we will analyze the main reasons for the breakdown and step.by.step adjustment of the part with our own hands.

How is the carburetor of a gas station arranged?

What is a carburetor? This is a complex detail in the system of operation of the mechanical device. In any model, air mixing with gasoline for future supply to functioning cylinders occurs.

Важно! Самыми качественными и рекомендованными бензокосами можно смело назвать приборы таких брендов: Husqvarna, Hyundai, STIHL, Zama, Walbro.

The engine of the lawn mower is based on an aluminum base that has a diffuser (a recess with internal restrictions). It is through this recess that air flows are heated. The rate of oxygen intake depends on the passage part of the diffuser.

Fuel tracks adjust to the diffuser. Gasoline is drawn through them using air flow. But on the outer part of the engine, the following parts are installed:

Важно! Плотность воздуха в карбюраторе зависит от объема открытой к доступу заслонки. Чем больше открыта система заслонки, тем больше агрегат расходует бензина и тем выше его мощность. То есть настройка карбюратора на триммере – это создание оптимального поступления топлива за счет правильной подачи воздуха.

When you need to adjust the carburetor in the trimmer?

You need to configure the device in such cases:

  • The new engine used 5l fuel mass in one call.
  • The weather has changed (a sharp drop in atmospheric pressure).
  • You bought oil or gasoline of another brand.
  • During long.term storage.
  • After the vibration, the screws independently got out.
  • Gasoline consumption has increased, the carburetor began to pour fuel.
  • The appearance of soot on the electrodes of the inner candle of the device.
  • Gasoline stopped entering the cylinders.
  • The motor often stalls or does not gain enough speed.

What are the breakdowns and how to recognize them?

One of the problems of failure of the trimmer engine for grass may be a mesh filter. Only two breakdowns can be attributed to this element:

To identify the exact cause, you need to do a number of the following actions:

  • Unscrew the lid of the fuel air gateway to take out the mesh filter. If the mud is detected, rinse it in the fuel or purge carefully. If you see serious damage to the mesh filter case, you need to install a new one without hesitation.
  • If the pipe broke down to supply the compressor fuel, then you should check this part. Most often it requires periodic replacement due to its low strength.
  • To clean the starting part of the carburetor from blockages, you need to use acetone or gasoline. You can also blow the components of the device with compressed air. this is the easiest and most convenient way of repairing.

Важно! Основание дроссельной заслонки, впускные и выпускные клапаны, места соединения всех частей карбюратора можно проверить простым действием – смазать проблемную зону мыльной пеной.

Self.adjusting the carburetor on the trimmer

Before setting up the device of the gas station, we recommend that you do the following actions:

  • Clean and rinse the engine.
  • Check for suitability of the spark plug.
  • Remove dust and dirt from an air filter or change it to a new.
  • Put in a trimmer video a cord suitable in diameter or install well.sharpened knives.

After installing the cutting parts and the launch of the fuel engine, the carburetor needs to warm up within 10 minutes. In case of rotation of the cutting tool during idle operation of the engine, reduce the engine speed.

Carburetor adjustment on the trimmer is not easy and laborious work. For competent configuration, you will have enough information from our cognitive article. And to do everything efficiently, use the video in which the whole process is clearly shown.

The principle of operation of the carburetor of the lawn mower

The throttle dashes determines the amount of air for supply, and the engine power directly depends on this.

Fuel is sucked into the carburetor system (its membrane). Then passes through the fitting in the carburetor. Next, the liquid moves through the intake and exhaust valve of the pump. Filtered with a net. The needle valve moves into the membrane chamber.

  • Air supply to the tube with an air septum (damper). The partition regulates the intensity of the air flow.
  • The fuel supply system is necessarily narrowed by a diffuser to increase the flow rate.
  • Gasoline through the float chamber and nozzle with narrowing. The chamber with a float regulates the temporary volume of gasoline. In the float chamber, the pressure level is neutral, and in the tube with narrowing is already low. Thanks to the pressure drop, fuel penetrates through the jetler.
  • Air flow acceleration contributes to the transfer of fuel (gasoline) and its spray. As a result, the air-fuel mixture of the necessary proportion or density is formed.
  • The air-fuel mixture penetrates the engine cylinder through the fuel tube.

The level of air density in the system depends on the area of ​​the open air damper. The wider the damper is, the greater the fuel consumption and power.

Simply put, adjusting the carburetor on a benzocos. creating an optimal fuel mixture due to the correct air supply.

The main problems

Malfunctions of the carburetor Motokos or trimmer for grass, despite the relative simplicity of their elimination, sometimes require a long search by excluding. The main reasons are as follows:

Flamming fuel supercharger

The most repeating breakdown is wear, rupture of the membrane. As a result, its lavation. Fuel moves are not sealed at certain stages of the engine cycle. The reasons here are as follows:

  • You have been working on a motorcycle or trimmer for too long without a break;
  • Poor.quality fuel was seasoned;
  • Wheelled gases fall into the pulse channel.

A deformed membrane is fraught with several bad consequences:

  • not enough gasoline or oxygen in the created combustible mixture;
  • the launch of the motor occurs after 10 or more unsuccessful attempts;
  • the engine knocks, clats during operation, and t. D.;
  • The working piston is deformed.

Ground of a mesh filter

The reasons for the clogging of the mesh filter are poor.quality fuel cleaning, damage to the hose and/or the injection head.

The failure of the adjustment lever

Wear of the contact edge of the lever. a consequence of not completely purified fuel, into which grains of sand or particles of clay, metal or other inclusions that are not soluble in liquid hydrocarbons fell. A problem with fuel injection appears, the motor does not function with interruptions without load.

The inlet needle is spoiled

The inlet needle breaks due to the presence of metal and stone particles in gasoline. As a result, the saddle of the intake needle tightly adjacent to it, the fuel mixture flows. In the combustible mixture created by the carburetor, there is too much air, which is why the motor can “sneeze” during operation. Finally, the needle can stop due to poor-quality gasoline, or the unit was idle for a long time.

Clogging the adjusting space

Deposits may accumulate in the adjustment compartment. The needle does not completely cover the hole, and a lot of gasoline enters the fuel chamber. the motor pours it, perhaps floods the spark plugs. Because of this, the gasoline mixture contains an increased number of vapor of gasoline. The efficiency falls noticeably.

The adjustment membrane is spoiled

The membrane is often deformed (sometimes torn) due to continuous operation of motorcycles or trimmer for grass for several hours. If you abuse such a “shock” mode of operation, damage to the membrane occurs more often. New breakdowns will be sprinkled from a cornation of abundance:

  • the piston will break;
  • The number of attempts by the unsuccessful start of the engine will increase sharply;
  • The fuel mixture will contain too little gasoline;
  • Useful (thermal) power will drop sharply.

The inlet regulatory lever sees

Sequeling of the adjusting lever. a consequence of the incorrect installation, random flexion. Contactive line will find an incorrect position. This will violate the additional injection of gasoline.

The damper has worn out

Throttle and air conditioning are unusable due to admission to the air flow of dust, metal particles, etc. D. Damaged shutters are similar to details subjected to streaming with sand. Due to wear of the damper, the efficiency of the motor decreases, breakdowns are detected. The piston and cylinder wear out.

In some cases, this filter is simply not suitable for your model motorcycles or trimmer for grass. In the end, the shaft of the motor will suffer. its pieces fall into the engine channels, which is why the piston will be broken.

The carburetor cannot be adjusted

The fact that the adjustment is too rough (it is not possible to accurately set the parameters) are to blame for the adjustment screws. The manufacturer Motokos or trimmer for grass can put excessively thick and hard springs. You can find others either in workshops where such equipment is repaired, or purchased from any dealer or official representative of the company who released the engine for your trimmer for grass or mechanical braid for grass.

The primer broke

Primer-a manual mini-pump for forced swinging fuel into a carburetor. For a successful start of the motor, it may be necessary to pump 20 ml of gasoline manually.

The principle of operation of the carburetor of the lawn mower

The throttle dashes determines the amount of air for supply, and the engine power directly depends on this.

Fuel is sucked into the carburetor system (its membrane). Then passes through the fitting in the carburetor. Next, the liquid moves through the intake and exhaust valve of the pump. Filtered with a net. The needle valve moves into the membrane chamber.

  • Air supply to the tube with an air septum (damper). The partition regulates the intensity of the air flow.
  • The fuel supply system is necessarily narrowed by a diffuser to increase the flow rate.
  • Gasoline through the float chamber and nozzle with narrowing. The chamber with a float regulates the temporary volume of gasoline. In the float chamber, the pressure level is neutral, and in the tube with narrowing is already low. Thanks to the pressure drop, fuel penetrates through the jetler.
  • Air flow acceleration contributes to the transfer of fuel (gasoline) and its spray. As a result, the air-fuel mixture of the necessary proportion or density is formed.
  • The air-fuel mixture penetrates the engine cylinder through the fuel tube.

The level of air density in the system depends on the area of ​​the open air damper. The wider the damper is, the greater the fuel consumption and power.

Simply put, adjusting the carburetor on a benzocos. creating an optimal fuel mixture due to the correct air supply.

How to adjust a carburetor on a gas tank

Before adjustment, it is necessary to carefully clean the filters according to the maintenance in the instructions.

Further configuration of the carburetor of the lawn mower with your own hands is performed by adjusting screws. There are three of them:

Right (l). adjustment of the fuel mixture for low revolutions.

You need to find the maximum speed at idle. To do this, they slowly turn the screw (l) to the right and left.

For adjustment, the screw is rotated by a quarter of turning must be counterclockwise.

Lower (t). is responsible for adjusting the engine at idle.

For proper adjustment of the idle, it is characteristic:

  • Sustainable operation of a cold engine;
  • non.high speed of the hot engine;
  • for a trimmer head, a large supply supply;
  • Sustainable engine operation when changing positions (sharp rise or descent of a knife).

Left (H). adjusting the mixture at high speeds. (The screw is set up last).

The overall adjustment of the maximum revolutions, engine power, temperature and gas consumption depends on the left screw (H).

Setting a carburetor of a lawn mower with a last screw is performed as follows:

  • Open the throttle to the full, while issuing a full gas. Turn the screw clock until the speeds fall (in this case, they are oriented by ear).
  • Turn the screw as slowly against the clock until the non.uneven operation of the engine.
  • Then turn back very little, barely hearing a stable, even work.
  • For more visual use of skills, it is more convenient to consider the work of an experienced user:

It is interesting that from the point of view of the author of the video, the configuration (its correctness) is determined by the color of the candle, and not just by the speed and stability of the engine.

Correct tuning of the carburetor with your own hands in this case-combustion of the fuel mixture without a residue, the color of the candle should be light brown.