Huter trimmer does not work on idle. Why is a benzotrimer not gaining momentum and strangle

Huter trimmer is not gaining momentum stalls

There may be several reasons for this common breakdown. Basically, the loss of revolutions during the operation of the internal combustion engine at idle is associated with the malfunctions of the engine, the loss of compression in its standard cylinder, the ignition system, the carburetor, as well as the incorrectly prepared fuel mixture. In search of the exact cause of the breakdown, the operator may face the following problems:

accumulation of tarry deposits and ash, fine garbage on air and fuel filters of the chainsaw. if possible, elements must be washed. If, in addition to blockages, cracks or holes were found on the surface of the filters, then the foam elements will need to be completely replaced;

• The spark plug defect. cracks, chips or burrs violate the part of the part, which leads to loss of motor speeds in the idle operation mode. In this case, the candle will need to be replaced;
• The loss of factory settings of the carburetor. increased pressure on the power unit leads to an increase in its vibration. As a result, the spring.loaded metal bolts of the fuel unit lose their original position, which leads to a loss of revolutions of the engine;
• cracks and holes in the fuel tube. to repair the chainsaw, the hose must be replaced;
• blockage of the inner walls of the muffler. dismantling, thorough flushing and the back of the muffler will help solve the problem. If large burrs formed on the inner cavities of the element, then it will soon begin to rust. To prevent this, it is better to replace the silencer immediately;
• The malfunction of the CPG of the power unit is the appearance of microcracks or burrs on the inner surface of the cylinder and the piston will lead to the loss of the tightness of the working chambers. As a result, the amount of air required to enrich the fuel mixture will be violated. the result will be the loss of the ICE speed when working at idle.

The stable operation of the chainsaw engine largely depends on the quality and proportion in which the fuel mixture is prepared. An excess or lack of oil will lead to a gradual deterioration in the operation of the power unit and over time it will not be able to work even at idle. To prevent this, you need to strictly adhere to the ratio of gasoline and oil, which is indicated in the instructions for the chainsaw used.

Non.standard failures

If a normally working chainsaw engine stalls when tilting the tool on one of the sides, open the gas tank cover and eliminate the freezing of a flexible fuel receiver.

Almost the entire assortment of Chinese chainsaws is more or less copied from popular models of European origin, so structural differences are insignificant. The recommendations given can be used if the Chinese chainsaw refused.

The maintainability of Chinese chainsaw equipment is increased by unifying the repair fund and the interchangeability of many components and parts with the same models.

Why stall the engine of a trimmer for grass when recruiting

The most popular with summer residents, gardeners and gardeners trimmers for grass are equipped with two.stroke engines operating on gasoline. In recent years, part of the manufacturers have been promoting motorcycles and leaflets based on four.stroke engines in the market, but they have not yet gained the popularity that two.stroke. They are more difficult in the device, more demanding on the mode of operation, purity of fuel, oil quality. Also, four.stroke engines are more in weight and more slowly gaining momentum.

During the operation of trimmers on the basis of two.stroke engines, a number of characteristic malfunctions arise related to the features of the design of the engines. With all the perfection of the Husqvarna or Echo engines, even they occasionally “acting up”. The budget models of motorcycle assembled in China, problems arise more often. This is due to both the lower quality of materials and the assembly level. The most characteristic malfunction is a poor launch from a “hot” state and “subsidence” of revolutions at a slight load. But sometimes a trimmer for grass stalls with a sharp press on the throttle key. Why does this happen?

The reasons for the breakdown

For all the apparent simplicity, the lawn mower is a well.thought.out and balanced tool in which each part is in its place. If everything is regular, the engine from the cold state should start after the first starter jerk. Depending on the model, first you need to swing the fuel mixture by pressing the transparent button on the carburetor. In a number of modern fuel pumping models, it is not required.

You also need to transfer the lever on the carburetor to the extreme position to close the air damper. In some models of Husqvarna and other manufacturers, the shuttle of the damper is carried out by turning a special regulator. After that, you need to turn on the ignition on the handle and energetically pull the starter’s cord, while pressing the gas key to about half.

The engine should start after the first jerk, but can earn after 3. 4 movements. This cannot be considered a breakdown. it all depends on the production of the motor, the quality of the fuel mixture, temperature and humidity and other factors. Two.stroke engines have their own character, to find out why they are not launched from the first, but from the fourth time, it is difficult even for professional mechanics.

If the engine confidently launched and earned, but the trimmer for the grass stalls when pressing the gas, then you forgot to transfer the carburetor lever to the position of the open or partially open air damper. Usually. this is the movement of the lever down. It may happen that the most stable the lawn mower works with a not fully opened damper. If you have used the trimmer for more than one season, so it will be. When the lever of the damper is transferred to the extreme lower position, the fuel mixture can become too impoverished and the trimmer for the grass stalls when you give gas.

This feature is not considered a malfunction. you just need to check the work of the trimmer for grass in different modes and try to use the optimal one in work. But there are other reasons why the lawn mower can stall at any stage, immediately after starting or during operation.

Other possible reasons

If, with a sharp addition of revolutions, the engine stalls, as if zabulae, then the reason may be:

• Carburetor adjustment failure. This happens after prolonged downtime or after excessive loads, for example, natives in hot weather or in conditions of strong dustiness.
• Clogging valve on the tank cover. Eliminated by replacing the lid or cleaning valve.
• Weakening of the cable of the carburetor regulator drive.
• Stretching of the fuel hose.
• Depressurization of traffic jams on the tank, which includes hoses.
• The clogging of the sapun.

When looking for the reasons why the trimmer stalls for the grass when trying to increase speed, other reasons may appear, for example, associated with the ignition coil and candle. If the fuel mixture is not prepared according to the rules using cheap oil or poor.quality gasoline, the proportions are not observed, or the mixture cooked a month ago, then the engine can also stall when trying to add gas.

How the real reason is determined

In the case when the carburetor is responsible for stopping the engine, a sudden stop is accompanied by a nearby symptoms. Most often, this is the appearance of tangible vibrations in all operating modes. Carburetor adjustment is carried out using two screws. idle control and fuel supply. In which direction to rotate them should be written in the operating instructions. If independent adjustment has not helped, contact the service center or buy a new carburetor.

If you have a lawn mower of a professional or semi-professional class, for example, the same echo or al-ko. then the carburetor resource is approximately equal to the durability of the motor and there is no need to buy a new one. It is enough to seek help in adjustment to a knowledgeable specialist. Motokos type Champion has a slightly lower carburetor resource, it may happen that adjustments will not help. Carburetors of two.stroke engines in the repair are complex, so it is better to order a new.

After making sure that the carburetor works fine, but the lawn mower still stalls, try to loosen the gas tank cover. If the engine operating mode has changed, it means that the lid valve is clogged or clogged. Practice shows that it is useless to clean it. It is better to buy a new cover, it costs a little, and it will last at least 2. 3 seasons.

Along the way, check the tightness of the gas pipeline connection from the carburetor and tank. Sometimes hoses stretch, and air is sucked around around the fittings. With a sharp press on the gas key, the mixture becomes depleted (gasoline is less than a stichiometric indicator) and the motor stalls. This also happens when the gasket between the carburetor and the cylinder is pierced or the bolts of the carburetor attachment are loosened from vibration. Just in case, check them, but do not forget that two.stroke engines are made of rather fragile alloys. If you overdo it with the moment of puffing, the thread in the cylinder can be disrupted.

It is also recommended to check the fence mesh on the hose in the tank, the cork through which the hoses are inserted into the tank and blow the fuel lines. Perhaps they are clogged and a little gasoline enters the carburetor. Especially with sharp pressure on gas.

Having checked and cleaning all the systems of the trimmer for the grass, season the tank prepared by all the rules by the mixture and start from the cold state. Let me work out a few minutes at idle and try to mow fishing at medium speeds. After 10. 12 minutes of work, add speed sharply. a trimmer for grass should not stall. If this happens, change the spark plug and perform the same actions.

If during operation a trimmer for the grass, before stall, spontaneously periodically reduces or increases the revolutions, “failures” appear in power, then it is necessary to check the ignition coil and contacts of all wires. Start with contacts, they are quite fragile and can break off or oxidize.

Proper care for the chainsaw

There are no unnecessary phrases in the operating instructions, everything that is proposed is aimed at uninterrupted operation of the gasoline pump. Cleaning all parts after each cycle of work facilitates the removal of unexplored residues and dirt. Clean only chilled nodes. This method contributes to the quality of the air cooling of the engine and the gearbox.

When saving the equipment for the winter, inspect, lubricate the gearbox and the piston system, wrap the entire saw in a lubricated rag and store it in a dry place.

This is impossible, dangerous for the instrument and health of the mower, use a metal cable instead of fishing line. It cuts more efficiently, but the load on the gear and the engine increases. A worn piece of wire flies at the speed of a bullet during disconnection. Effective mowing can lead to the rapid wear of the piston group of the engine. For greater efficiency of the mowing, it is proposed to use the profile of the “Asterisk” line.

While leaving the personal plot, sometimes people have to face the fact that their lawn mower is not started. There are several reasons for the refusal of this tool.

The lawn mower will not start. the reasons

Incorrect storage, a long break in extreme, untimely maintenance and other factors lead to the fact that the lawn mower may stop starting.

Diagnostics of the reasons should be started with checking the main nodes. fuel tank, candles and candle canal, air and fuel filters, saopan, graduation channel. Most often, problems are associated with one of these nodes, and their thorough inspection will help to decide why the lawn mower will not start.

If you use low-quality fuel (below AI-92), this can lead to a breakdown of the cylinder-piston system, the repair of which will result in about a third of the cost

In addition, it is important to observe the correct ratio of gasoline and oil specified in the operating guide to your specific model

The operation of the engine can also prevent fuel filter pollution. If this problem is detected, you need to replace the filter. Air filter also does not hurt to check also. When contaminating it, it is necessary to dismantle it, rinse in water with detergents, dry, grease in oil and put in place. Spark plugs that do not show signs of life must be replaced with new.

Sometimes the lawn mower starts up normally, but then stalls. This is mainly due to incorrect tuning the carburetor or its reservation. Determine that the reason is precisely in this, you can by vibration that are noticeable during operation. You need to configure the fuel supply adjustment, following the instrumentation instructions.

The lawn mower is poorly started on hot

When the lawn mower worked properly, and after a short break does not want to start again, you need to press the gas trigger and sharply pull the starter cord several times in a row, until the engine starts and only then release the gas trigger.

The lawn mower is not started on a cold

At the factory, cold motorcycles are pressed for gas, on the contrary, is not recommended. It is necessary to tilt the lawn mower so that the air filter is at the top and click on the leak button 5-6 times, then install the function of switching the functions to the Start position and pull over the cord several times before the engine factory. After a few seconds of operation, braids for the grass, the start system can be turned off.

What to do if the lawn mower does not start ? In this article we will consider the main reasons for this breakdown.

Most often, the lawn mower refuses to start because the fuel fills the candle. This can happen due to the fact that worn nozzles serve too much fuel in the combustion chamber, and its excess flies a candle, which is why it cannot generate a spark. If the candle is always wet, then this may indicate the wear of the gaskets, which is why the flowing oil prevents the formation of a spark. If the candle is dry, and the lawn mower still does not start, then, first you should replace the candle itself.

Another common reason-a 4-step lawn mower refuses. Here you can recommend a simple test: by clicking on the trigger, twitch the launch cord several times. If after that the engine has not started, then your tool needs a more detailed diagnosis with subsequent specialized repair.

Check the fuel supply

In order to check if gasoline enters the cylinder, you need to unscrew the candle and look at its electrodes. If the candle is dry, then petrol

Apparently does not act, but if it is wet, it means acting.

Sometimes it happens that the candle “throws” the fuel during the factory. That is, there seems to be a spark, but for some reason it was not possible to immediately start the engine, and at the same time petrol

I acted during the twitching by the starter, the candle became raw and through the fuel on the electrode the spark no longer breaks through. In this case, the electrodes can simply be wiped.

Diagnostics and elimination of gasoline problems

Before proceeding with the repair of a particular node (parts), it is necessary to determine the nature of the malfunction. Step.by.step diagnosis and elimination of malfunctions. hereinafter.

Carburetor

This mechanism is an important node of the benzotrimmer. In order for the carburetor to work properly, several conditions must be met:

• at times to disassemble and clean it;
• regulate idle speed according to the instructions;
• Turn to the help of a master when adjusting.

In the case of a breakdown of this unit, it can be renovated by yourself, but only in the presence of certain knowledge.

One of the reasons for the poor operation of the carburetor is a relaxed cable. To eliminate the problem, first you need to disassemble the entire node, and then, thoroughly washing all the details, grease and tighten the cable, but not very much so as not to take care.

Important! Other malfunctions can negatively affect the operation of the carburetor: failure of the intake needle, deformation of the membrane, wear of the adjusting lever, pollution of the adjusting cavity, wear of the shutters.

Candle

For problems with a candle, it is sometimes enough to dry or clean it with sandpaper and return to its place, properly putting the gap. it should be 1 mm. If the candle is strongly covered with soot, it is better to replace it with a new. With the optimal operating mode of the trimmer for the grass, candles do not fail so often.

Filters

Blocking air filter ─ another reason for the unreliable operation of the device. To check the involvement of this element in the malfunction, you need to start the lawn mower without it. The contaminated filter can be washed in gasoline, dried or replaced with new.

The clogged fuel filter does not let the fuel into the cylinder, and the engine with full gas stalls due to elementary lack of gasoline. This element is located inside the tank on a fence hose. To eliminate the problem, instead of the old filter, put on the new hose or rinse carefully the one that was removed.

Advice! When trying to pull out a cork in the tank, the hose along with the filter can fall into the tank. You can get them with tweezers.

Motor

Engine ─ this is the most important part of any unit. There are several reasons for the breakdowns of the ICE:

• incorrect oil proportions with fuel (for two.stroke);
• old fuel mixture;
• wear and destruction of the piston ring;
• traces of scratches on the cylinder and piston;
• Operation of the apparatus for wear.

All this leads to the fact that the engine either does not start or stalls.

Important! If all other details and nodes of a trimmer for grass are repaired with your own hands, then you need to be extremely careful with the motor. This work is best entrusted to a specialist. The repair can be subject to the piston, seals, cylinder, rings.

Fuel system

For non.precise operation of the benzotrimer, the functioning of the fuel system is of great importance. Gasoline passes through all its nodes and details, so they should be regularly cleaned. In addition, it is necessary to use only high.quality fuel. To prepare a combustible mixture, motor oil can not be used on a two.stroke engine, as it has insufficient qualities.

Frequent malfunction: the engine is not gaining momentum and what to do to the driver

revolutions, then the 1st step. analyze when and how it manifested itself. In other words, the device finished spin suddenly, or the inconsistent with a set of revolutions evenly progressed. You should also direct attention to the presence or absence of other symptoms.

The fact is that the motor failure that previously worked did not gain speed after at least any repair or other manipulations, it may simply be the result of the assembly errors, unconnected by the sensor and that is similar. In such cases, the malfunction can be found more frequent and more precisely after an ignorant review or immediate return of the vehicle to the service, where the car was previously repaired.

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:

Situations in which adjustment is necessary

New chainsaws are supplied by the manufacturer with adjusted carburetors. This is called standard adjustment. But for the normal passage of the running.in process, it is necessary to reduce the maximum engine speed, adjust the carburetor. After running in, the chainsaws need an accurate setting to achieve maximum engine efficiency.

With excess fuel in the mixture, engine parts are poorly lubricated, and premature wear occurs. Also, a high-quality mixture can cause the engine jamming due to overheating (this is one of the reasons why the chainsaw is not started).

This is what the jammed, overheated piston looks like a disassembled chainsaw with an incorrect carburetor.

Adjustment is necessary when the engine does not hold idling, stalls or does not develop full power. Carburetor tuning should be carried out with clean air and fuel filters. We also recommend reading an interesting article, which describes in detail about the main reasons why the chainsaw is started and immediately stalls.

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 enriching 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.

The principle of operation of the carburetor of the lawn mower

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

Determined by the operation of the motor and by the color of the candle. Adjusted

Self.setting up the carburetor

on the Chinese trimmer, rapidly and simply a layout on

A combustible pump (its membrane) is sucked into the carburetor system. Then passes through the fitting in the carburetor. Then the liquid moves through the intake and exhaust valve of the pump. Filtered with a net. On 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 certainly narrowed by the mixer to accelerate the flow.
• 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 small. Thanks to the pressure drop, fuel seeps through a jickler.
• Acceleration of the air flow contributes to the transfer of fuel (gasoline) and its spray. Ultimately, a fuel mixture of the desired proportion or density appears.
• The air-fuel mixture seeps into the cylinder of the motor through the fuel tube.

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

Simply put, adjusting the carburetor on a benzocos. creating a good fuel consistency due to the correct air supply.

Typical malfunctions of electric trimmers

Electric motor. a device, as they say, massive use, for the user, acquaintance with him usually takes place at the level “clicked on the button. and spun”. If it did not spin or, worse, smoke. the road is either to the service or for the tool. At home, you can usually only check the contacts or replace the brushes (there are no brushes on many engines and brushes).

Some models may contain additional elements: a device for maintaining a uniform speed of rotation, regardless of the load, fuses for protection against overload and short circuit, some kind of LED indicators (especially battery varieties), smooth starting devices (characteristic precisely for powerful motos ). All this is useful, but at home is not regulated, it is not repaired and very rarely deteriorates. Some manufacturers put everything that is needed by default: in the end, we are talking about a small and inexpensive electronic circuit located next to the motor. The motors themselves are generally the same.

With a gasoline engine, everything is much more complicated. “Classics of the genre”. a light and inexpensive two.stroke motor. gradually losing ground. There is only one reason. the discrepancy between environmental standards. Many manufacturers are gradually starting to switch to more complex and expensive motors. Their higher initial cost is compensated, in particular, by saving on fuel with prolonged work: after all, gasoline is also expensive, and in the “two.stroke” a considerable part of it is simply lost. “Inappropriate expenditure” of fuel can be significantly reduced if you mix fuel well in the combustion chamber and create optimal conditions for its combustion. You can also blow the cylinder with air before the release of each new portion of the mixture to completely remove exhaust gases from the combustion chamber.

These two technologies are now used in the production of new two.stroke engines. Different manufacturers can call them differently, but these developments provide compliance with at least Euro 2 standard. In some countries, the sale of equipment with ordinary two.stroke engines is simply prohibited, we have no such restrictions yet. The engine does not have an important technical differences for the user, that is, there are many differences, but it lends itself poorly to repair at home. Anyway, in everyday life, the engines “die” more often from improper operation than from wear or miscalculations when constructing. There can be more “outside” differences, as always, the design and features of the maintenance of air and fuel filters and the availability of light starting systems are interesting: additional springs in the starter, primer, and sometimes automatic decompression or decompression valve (these are different systems, the valve is pressed manually, “automatic” can only be seen when disassembled).

On motokos, four.stroke engines are sometimes installed. They are more reliable, environmentally friendly, do not require adding oil to gasoline and draining the fuel mixture from the tank before storage. In addition, such engines are less noisy, and the sound of the exhaust is not so harsh. True, for a four.stroke engine, it is required to introduce a gas distribution mechanism and a separate lubrication system with engine oil, as a result, the design is complicated and weighted. Yes, and the work of the timing requires additional engine power, which means that the output power will slightly decrease. In addition, the usual “four.stroke” cannot be highlighted: if the oil supply to the details stops, the engine will fail. Only in recent years, quite light and compact motors have appeared that could work at large angles of inclination, almost as light as two.stroke, but with a large resource, which is important for professional technology.

Such motors produce several companies, the design can vary in methods of saving oil in the crankcase when tilted and its supply to the valves. There are intermediate options: “four.strokes” working on the fuel mixture. They do not need motor oil, the lubrication of parts occurs, like any two.stroke, due to the oil in the mixture.

There are only two types of rods: straight and curved. And here there is a significant difference between trimmers and motorcycles: the motorcycle has a shaft inside the motorcycle. That is why the motorcycle rods look quite simple: a steel or aluminum tube with a diameter of 22-28 mm. The shaft for a curved bar, of course, should be flexible, a forged rod is often placed in a straight line as a shaft. The shaft rotates on bearings and is supported inside several additional supports, most often with bushings, but ball bearings also come across.

A fully collected braid for grass has a length of 1.5-2 m, transporting and storing it is not always simple, at least in the trunk of a car, it will most likely not enter-you will have to lay out seats. Some models are available with detachable rods. This at least save space, and many braids for grass can attach additional nozzles, for example, a bush, a minultivator or a chain saw. altitude. It should only be taken into account that a detachable bar is another knot, its elements can break, and such a braid for grass will cost a little more expensive.

A separate type of motorcycle. ranger. The engine is attached behind his back, a flexible bar is coming from it, which is connected to the hard. They are not used in everyday life, but for professional work they are convenient.

Typical malfunctions of gasoline trimmers

The engine of the trimmer for the grass does not start. The causes of the problem can serve as a malfunction in the system of ignition of a trimmer for grass or the use of poor.quality fuel (mixture).

• The use of poor.quality (counterfeit) gasoline, contaminated with various impurities;
• The presence of water in gasoline;
• Excessive fuel level in the tank (cylinder);
• The use of fuel mixture with incorrect proportions of gasoline and oil.

Characteristic problems in the ignition system:

• Damage or pollution of the spark plug;
• Incorrectly exhibited gap between the electrodes of the candle. The easiest way is to replace the problematic candle of the new or seek help from specialists.

During the operation of the engine, characteristic knocks are heard. The cause of the knock can be a damaged cylinder, crankshaft or bearing. All damaged parts should be replaced by serviceable. If a metallic knocking trimmer is a metal trimmer when working, it is quite possible that you have chosen the wrong type of fuel mixture (gasoline with oil or gasoline with additives). The mixture should be drained and replaced by the correct. In addition, extraneous sounds can make an overheated engine that has been continuously working for a more set time (usually a safe period is 15 minutes).

The trimmer ignition system for grass is faulty. Such malfunctions are caused by water that falls into the fuel mixture or problems with the spark plug.

Suddenly stalls the engine of a trimmer for grass. Typically, such reasons are caused by the absence of a fuel mixture in the tank, a malfunction of the candle or damage to the high.voltage wire in the ignition system.

Immediately after you started

The unit may stall immediately after starting, if the carburetor is shifted or incorrectly adjusted. This causes an uneven supply of fuel. As a result, the device vibrates clearly. To eliminate defects, the carburetor is reconfigured, following the annotations to the mechanism.

Apart from that, the engine stops when clogging the fuel supply valve. In such cases, it is quite easy to clean it. If the bureau at first earned, but later stalled immediately, then maybe the fuel with some difficulty falls into the carburetor knot. Weakening of the valve helps to solve the issue, which ensures free circulation of the consistency in the system.

The stop can also be caused by air leaks in the presence of mechanical damage to the hose (holes, cracks), taking fuel. In this case, increase the speed of the drive in order to resign more air from the system from the system.

Where to look for a reason or where to start checking

All chainsaws have the same design, and work according to one principle. The device of the chainsaw can be found in this material. It does not play much meaning which brand of the tool. Stihl, Husqvarna, Echo, Champion, Partner, Sturm and others. A malfunction manifested in the form when a chainsaw is stalling when pressed on gas can arise the same both on expensive and high.quality tools and on budget Chinese devices. If the problem has arisen, then it needs to be solved.

A chainsaw is a system of mechanisms consisting of details. Any detail in the mechanism can fail, which will lead to a partial or complete failure of the tool. If the tool engine starts, then this does not mean that the chainsaw is completely serviceable. Когда при повышении оборотов происходит прекращение работы двигателя, значит на то имеются соответствующие причины. With this malfunction, you need to pay attention initially to a number of the following tool mechanisms:

• Gas tank. make sure of the presence of fuel. If fuel is in sufficient quantity, you should also check the serviceability of the fuel filter, the presence of a connection of the supply hose with the carburetor, and also make sure that the operability

These are the main details and mechanisms that should be checked first if there is a malfunction when the chainsaw stalls when the accelerator is pressed. There are other reasons why the chainsaw engine stall when the gas trigger presses. What else can contribute to this malfunction, as well as features of elimination of breakdowns, we will find out later.