The Echo SRM lawn mower is not launched.

Trimmer for grass gasoline ECHO does not start

First of all, you need to unscrew the candle. If it is wet, then the ignition system is faulty. Try wipe the candle, put it in the cap, attach it to the engine, pull the starter. There is a spark? If not, then you need to change the candle.

Replacing the candle did not help? Then you need to watch magneto, cable, ignition coil. The cable is nicknamed, the coil is checked for resistance (multimeter in the resistance measurement mode of 200 Ohms, one contact for the mass, the other to the reel exit should show from 0.4 to 2 ohms).

Sometimes magnets are polluted on the flywheel, or the key is lung, and the ignition moment flies up. Chinese shit throws various surprises, but for the most part everything can be identified visually.

Be sure to pay attention to the coat of candles. If it is black, the candle is smoked, then the mixture is rich, or you mixed the fuel incorrectly

If the plaque is white, then the mixture is poor, and the engine could already die from the temperature. Ideally, the color should be brick, bright, without much raid.

Again, if the black candle is dead, you should not immediately sin on the carburetor and ignition. Plunge the new, see what plaque will be. Maybe just a candle was poor.quality.

What is the resource of Chinese motorcycles?

Chinese or Russian lawn mower is able to work about 500 mothers. But this is with the right consistency, good oil, good factory assembly. If a person fills gasoline with one good refueling, accurately measures the same oil along the Menzurka, the carburetor regulates the same mixture, fuel flashes correctly, then the desired half a hundred hours of motor resource is a fully accessible bar.

But here you can not forget about Chinese marriage. They even balance the shafts on the knee, put the cheapest bearings, carburetors are stamped with clogged channels. If a person is aware of the mechanism of operation of a two.stroke engine and carburetor, thinks how to sort it out, then he can ultimately collect an almost impeccable trimmer for grass.

In general, if we consider the Chinese motorcycle foam as a place for creativity, then even its breakdown is an occasion to study something new, this is a designer for a man.

If you need specifically a tool, then it is worth finding a Japanese analogue, or switch to an electronic model.

What the engine shaft speed depends on what depends?

On the speed of rotation of the motor shaft, as well as the cutting tool of a trimmer for grass, affect:

• the position of the gas trigger;
• motor operating mode;
• purity of fuel and air filters;
• load on the cutting tool;
• The technical condition of the engine.

The gas trigger through the cable controls the position of the air damper (throttle) of the carburetor, so by clicking on it, you open the throttle. The carburetor is based on the Venturi effect, that is, the ability of passing air to carry fuel particles behind it, and the diameter of the air channel and the fuel nozzle is selected in such a way that the ratio of air and fuel is always optimal.

That is, pressing the gas key leads to an increased air flow, and therefore fuel, which in turn increases engine speed.

The carburetor is equipped with a switch of modes (launch/work).

During the launch, the operator includes the corresponding mode and covers the supply of most of the air, strongly enriching the fuel mixture.

Then he puts the switch to the operating mode, restoring normal air supply. Read more about these modes here and here.

Fuel and air filters create a certain obstacle to the movement of air and gasoline, however, this influence is taken into account by the developers in determining the diameters of the channel and the potpel jacket.

As they become contaminated, the influence of both filters increases, due to which the ratio of the fuel mixture changes and the utility coefficient (efficiency) of the motor falls strongly, so even the maximum pressing of the trigger does not lead to a noticeable increase in engine speeds.

While the engine operates without load, even a little pressing on the trigger is enough for promoting to maximum revolutions, however, during the mowing of the grass, the revolutions fall, so you have to strengthen pressing. Thus, the operator regulates the power of the motor and the speed of rotation of the cutting tool, providing good mowing.

A working motor effectively converts the fuel mixture into the energy of rotation of the shaft, however, any defect in this mechanism reduces its efficiency.

Why does the lawn mower do not develop full power and stalls?

Here are the most frequent reasons why this happens:

Excessed gasoline

If you leave the fuel in the trimmer and put it on winter storage, then it is highly likely that by spring part of the most light hydrocarbons will evaporate, due to which the combustibility and ignorance of the remaining liquid will change.

Even if you manage to run the engine with exhausted fuel, it is pointless to expect high power from it, because the carburetor forms a fuel.air mixture with proportions designed for normal gasoline.

Read more about this here (not starting).

To correct the situation, do the following:

• Drain all the old gasoline, including from fuel tubes;
• Pour normal fuel or mixture of gas with oil;
• pump up a combustible primer;
• Twist 20-30 times by the hand starter cable to pump fuel along the carburetor;
• If the motor starts up normally, then start mowing the grass, if not, then unscrew and dry the spark plug, then screw it into place and regularly start the trimmer for the grass.

Dirty fuel or air filters

Dirt reduces the throughput of filters, which negatively affects the composition of the fuel mixture, which means reduces engine power.

To check the air filter, remove the cover covering it and pull the cartridge out (on many trimmers its role is played by a piece of foam rubber).

If it is clean, check the fuel filter element, otherwise replace or check as described in the instructions for the operation of your device.

To check the fuel filter, pull it out of the fuel tank through the passage or pouring hole. If it does not go through the passage hole, but it does not work out through the filling, use the wire hook.

If necessary, replace the filter and lower it into the tank, read more about such work here (the lawn mower stalls) and here.

Incorrect adjustment of the gas cable

Gas trigger and carburetor connects a special cable together. To check its work, remove the engine cover and, pressing the gas trigger, visually evaluate the angle of rotation of the sector to which the cable is connected. If it is at least 30 degrees, then the reason must be sought in something else.

If the rotation angle is smaller, then disassemble the handle and carefully check all the cable mounts, pay special attention to fixing its outer shell in the handle and on the carburetor. Having discovered the loosely fixed part of the cable, securely fix it again check the angle of rotation of the carburetor sector.

Closed carburetor

This happens if low.quality gasoline with high ms is often poured into a trimmer tank for grass. This fuel forms tarry deposits in the carburetor, which reduce the throughput of the channels. Such deposits in the needle area regulating fuel supply in maximum power mode are especially dangerous.

Try to unscrew the screw slightly, which regulates the fuel supply in maximum power mode, if the speed is raised, but do not reach the maximum, then press the gas key for 2-3 minutes and release it.

Perhaps this operating mode will break through a cork of oily deposits, after which the motor will again begin to issue maximum power. If this does not help, then the carburetor will have to disassemble why experience and tools will be required, so if they are absent, we recommend that we take Motokos for such a repair to the workshop.

The device and principle of operation of the starter on the trimmer

The gasoline engine is, in principle, the main part of the motorcycles its power lies in the range of 0.5-2.5 liters.With. The movement from it is transmitted by the shaft located inside the hollow bar, and then through the gearbox, consisting of gears, already a fishing line or a knife (working body).

Also, the lawn mower has the following elements:

• protective casing;
• lever;
• a belt designed for ease of use of the device;
• Starter serving for launching a gasoline internal combustion engine.

All parts of the motorcycles are presented in the photo further.

The starter on the trimmer is an integral part, which performs the engine starting into operation. It is shown separately in two photos below.

The starter mechanisms of various models of the benzos work according to the same principle: during the launch of the ICE, the protrusions marked in the photograph above the number 1 are included in the hook with dogs 3. When the engine begins to work, they return to their previous position due to the effects of centrifugal. Similar role is also played by wires 2.

The process of returning to the initial position of the elements of the mechanism occurs due to the presence of a spring screwed around the axis. It unfolds when the rope is pulled. After releasing the cord, it is drawn and winding due to folding the spring. During the launch of the ICE of the lawn mower, the triggering mechanism turns its shaft until it starts to work (starts).

To date, gasoline motorcycles are equipped with two types of starter mechanisms:

The first option is much more common.

The starter on the trimmer can function without breakdowns for a long time. It is impossible to unambiguously indicate the deadline. Everything is determined by the initial quality of the device and compliance with the rules of handling it.

The engine of the lawn mower is not started.

Everything is simple here, a few main points for any motors: that the engine works good compression, its absence will not allow the motor to start. The following that you need to check this ignition, there will be no ignition without a spark. The clogged fuel system will make it difficult to feed the fuel and the contaminated exhaust system also greatly complicate the launch of the motor.

Perhaps this is the main thing you need to check. The most popular repair scheme is the exclusion method. That is, in order we cut off options for faults, I will tell you more:

Fault of the piston group

On the entire two.stroke technique that is brought to us, we first check the bully on the piston and cylinder. You can do this by unscrewing the 2 muffler bolt and taking it off, shut up the exhaust window. If the piston is smooth and the rings are springy. this is good if the piston is in damage or rings and hesitated. this is not acceptable. The cause of the breakdown is overheating, the old fuel mixture or the absence of oil in the solution. The only panacea is a major overhaul with the replacement of the piston.

Trimmer ignition malfunctions

Next, check the spark, leaning a candle to the mass and scrolling as a starter as follows. If there is no spark, disconnect the wires from the coil to exclude the switch. We perform all operations only with a new candle. Dragged, pumped, wiped candles will not work. There are also cases when a spark disappears on a heated spit and does not appear until complete cooling. Poor contact of the cap and high.voltage wire is possible. If the spark does not appear, the ignition coil replacement is necessary.

Fuel system pollution

If everything is in order with the motor and spark, let’s try to start. We recommend that you sprinkle the carburetor cleaner into the combustion chamber, under a candle or in the carburetor window. The motor will start and most likely stall, repeat the operation several times. If nothing helps, you need to try to clean the carburetor. We do not recommend climbing on our own, due to the presence of small details or their absence as a result of inexperienced repair. Fuel system pollution is the most common malfunction.

Carburetor malfunction

Unfortunately, cleaning the carburetor is not a panacea and it is not always possible to clean it completely. Even ultrasound and a good cleaner are sometimes powerless. Also in carburetors often fail: needle, check valve, accelerator valve, membrane, needle and saddle. Someone will say what to break there, but the saw carburetor is structurally more difficult than the car carburetor. In many cases, you have to change the carburetor in its entirety or some of the parts.

The clogged exhaust motorcycles

Since oil is present in gasoline, it burns and releases a lot of burning, which is postponed in the muffler and graduation window. On some trimmers, a mesh is installed. a flame arrester, it also needs to be cleaned. Muffler either change or try to burn. My experience allows you to determine whether the exhaust is clogged, just pulling the starter. If you find a dozen in the window, mcorm it, he should not get into the combustion chamber. Use good oil with low smoke emissions.

How to properly serve a motorcycle

The device consists of the following mandatory elements:

Trimmer care involves monitoring the technical condition of each of them.

Engine care

When caring for a gasoline engine, it is worth paying special attention to the cleanliness of the air filter. it should not have sawdust and dirt. Foam filter should be constantly moistened with oil. Check should be carried out weekly, quickly change the filter as necessary. Before starting each work, you should check how the nuts and screws are tightened. It is also necessary to clean the muffler and candles from the carbon fiber as it is contaminated.

In the electric version, it is enough to follow the operating time prescribed by the manufacturer.

Monitoring of the condition of the fishing line

How to care for the cordial part? The most important thing in this case is the use of a specially designed mowing fishing line.

In no case should you replace the fishing line for a trimmer with metal cables or wire. this is traumatic.

How to monitor the corner gearbox

The priority task of the user is to prevent the accumulation of dirt on it. This circumstance will not allow the details to cool normally. The second requirement is to use consistent lubricant (such as Husqvarna or like), designed for a reducer pair. Usually enough annual lubrication procedure.

What you need to know about the casing to protect

It is forbidden to work without a protective casing. initiative can be dangerous for the user and others. But it is impossible to select such details from among the non.violent, it is necessary to use the recommended by the manufacturer. Damaged casing should be changed in a timely manner.

Casings can be attached both on the bar and on the gearbox. In universal models (working and fishing line and disk) two different kokhuzha are attached. A special cutting plate that cuts off the excess cord can also be located on the “forest”.

We summarize what has been said about the main points of departure in this maintenance of the Hitachi brand Motokos:

Repair of small breakdowns

Little repair can do almost any person. In the electric motor, the user will only be able to check the contacts or replace the brushes. A lot of the elements of the microcircuit cannot be fixed without service intervention.

To prevent a breakdown of a gasoline engine, you need to blow the container with air before pouring new portions of the mixture. this measure will remove exhaust gases. Four.stroke engines are not recommended to be highlighted: the oil supply to the details may stop, which will disable the engine.

If the trimmer motor for the grass has broken, and the user does not have knowledge in the field of electromechanics, then it is best not to try to disassemble it, but to contact specialists.

But with such small breakdows you can cope with your own hands.

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.

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.

Clead cleaning

In the worst times of the work with a trimmer with an unresolved carburetor, the engine stopped starting after using each fuel tank. And only after cleaning the candle from the car, could you continue to work.

For cleaning the electrodes, fine sandpaper was used, and a thin stationery clip with a bent end was used to clean the space between the insulator and the case. At first, the electrodes were wiped with high dirt with a rag, then cleaned with sandpaper. After that, the candle fell into the diesel fuel and the moistened carpet was opposed by a paper clip from the surfaces of the insulator, the inside of the body and between them. Further, the candle fell several times into the diesel fuel, which then shake off it along with the pollution. Sometimes the procedure for cleaning a paper clip and washing were repeated. After that, the candle wiped dry and was ready for further operation.

Incredibly, one fuel mixture tank with an unresolved carburetor can be spent in less than 10 minutes. verified in practice, when the trimmer for the grass was launched and operated at high speeds with maximum fuel supply (the adjusting screw was unscrewed much more than the norm).

The proportion of the fuel mixture

I read somewhere that if the law mowing manual and the canister with butter indicates different proportions of the preparation of the fuel mixture, the proportion indicated in the manual should be used.

It was done for a long time. excess oil flowed out of the engine to the gas tank and the fiber was constantly formed on the candle, since the leadership indicated a proportion for a running.in engine 1:25, and on the canister. 1:50. After the transition to a proportion of 1:50, the appearance of oil fluxes stopped. The candle continued to burn, but with less intensity (the carburetor has not yet been adjusted).

Until now, some users of the benzo tool determine the fuel mixture “by eye”. If when preparing the mixture the amount of oil is underestimated, after a while an extraneous sound may appear immediately after the engine starts, gradually disappeared during heating, and the engine stop occurs with a sharp jerk. The continuation of the operation of a trimmer for grass in this mode will lead to its failure.

Read how to replace the cord on the Elitech trimmer

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 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.

Repair of a trimmer for the grass Echo SRM-22 GES, replacement of a carburetor.

• 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 and malfunctions of the carburetor.

Mesh filter. There are only two tasks with this element more often:

In order to find out the cause of the breakdown, the fuel filter lid is unscrewed to extract the mesh filter. If the mud just accumulated on it, then flushing in gasoline or purge will help.

With visible damage on the mesh filter, it is necessary to put a new. There may also be damage to the fuel supply pipe (during the repair they practice checking this element).

The starting device of the carburetor almost always does not work due to blockages. Should be used for flushing acetone or the same gasoline.

Purging parts of a carburetor with click of compressed air. permissible and comfortable repair practice.

The hull of throttles, places of ligaments of the parts of the carburetor, intake or graduation pipeline. all of the listed parts are subject to depressurization. You can probably check the simple method. spread the problem area with soap foam.

Washing with partial disassembly

The process of washing the carburetor with its partial disassembly is considered using the Solex carburetor and the Jet 100 Ultra carburetor. You don’t need to buy a lot. One can be enough with a volume of 200 ml. In addition to special fluid, you will also be required:

• set of wrenches;
• Cross and slotted screwdrivers;
• Passatigi;
• a capacity with a wide “throat” with a volume of 2-3 liters (for soaking the carburetor cover);
• a capacity with a wide “throat” with a volume of 0.2–0.5 l (for soaking small parts);
• kerosene (purified gasoline, acetone);
• tire pump or compressor with a tapering tip;
• toothpicks;
• Old toothbrush;
• pure dry fabric that does not leave the pile (better rough);
• Small wooden blade (like ice cream sticks).

Read how to lubricate the shaft on the trimmer Echo 22

Flushing the carburetor without removing it from the engine and disassembly

• We go to the nearest gas station.
• Unscrew the fuel tank plug.
• Open a jar with flushing liquid (opens like a beer bank).
• Using a watering can, pour the product into the tank.
• Pour gasoline into the tank (until complete);
• We drive by car until the fuel is over.

According to the manufacturer, the Hi-Gear HG 3205 additive helps not only self-cleaning of the fuel system, but also helps:

Maybe, of course, everything is not so colorful, but having drove 300-400 km on this additive, you will notice positive changes in the engine operation. To maintain the fuel system and carburetor in particular, it is recommended to repeat the described procedure every 3000 km of run.

Carburetor of a benzotrimer. Dismantling.

Spare parts for Chinese motorcycles Chinese lawn mower repairs

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. How to replace the carburetor with the Echo SRM-22 GES trimmer, well, first of the first it is necessary to conduct the correct diagnosis and only by making sure of the non-combination carburetor to replace. 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. How to repair a starter on a trimmer with your own hands. How to disassemble and assemble a starter, wind a spring and replace the cord. 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.

How to assemble a carburetor on the Evdiral trimmer.Ru

You can adjust the carburetor of the lawn mower with your own hands

lawn mowers, like the entire bench tool for the garden, is not difficult to maintain equipment. Repair, configure without the help of others you can and necessary. For example, adjusting the carburetor of the lawn mower with your own hands. it is 5 minutes.

Pain or numbness in the fingers.

Pain or numbness in the fingers? See a doctor immediately!

It is believed that the state called the Raynod phenomenon, which affects the fingers, can be caused by cold and vibration. The action of vibration and cold can cause a tingling and burning sensation, accompanied by whitewashing and numbness of the fingers. The following recommendations are extremely important to reduce manifestations that can cause an unknown disease. Keep the body warm, especially the head and neck, feet and ankles, palms and wrists.

Maintain good blood circulation by performing energetic

Hand exercises during frequent breaks in work. Do not smoke.

Limit the working hours. Try to plan the work in this way,

In order not to work as a trimmer or other manual devices daily.

If you have the redness and swelling of the fingers, accompanied by pale and loss of sensitivity, consult a doctor before being exposed to cold and vibration.

Permanent load injury

It is believed that the excessive load on the muscles and tendons of the fingers, hands, hands and shoulders can cause sensitivity, swelling, numbness and severe pain in the above parts of the body. Certain repeated actions with brushes can cause the risk of injury to constant load (TPN). To reduce the risk of TPN, follow the following instructions:

Do not work curved or elongated wrist.

Periodically take breaks to reduce the constant load and give

Rest to the hands. Reduce the speed and force with which you make repeated movements.

Do exercises aimed at stretching the muscles of the hands and hands.

Consult a doctor if you feel tingling, numbness or pain in your fingers, brush, wrist or hands. Early diagnosis of TPN will prevent irreversible damage to muscles and nerves.

The reasons why it is impossible to start a motorcycle

These are the reasons why the motor motorcycus cannot be made:

• In the fuel tank, an old exhausted gasoline;
• the engine starting procedure is disturbed;
• short circuit of the wires going to the on/off button;
• the ignition system is faulty;
• clogged air filter;
• Fuel filter clogged;
• fuel hoses;
• Board of the sapun;
• Parus is a primer;
• Cutted with mud or faulty carburetor;
• The air damper drive broke;
• The engine is faulty (rings lay down).

In the fuel tank, old exhausted gasoline

Despite the fact that in the instructions for the operation of each model it is recommended not only not to leave fuel in the gas tank, but also to carry out the conservation of the engine, some of the owners of such equipment neglects these recommendations.

If the gas tank cover is tightly closed and the buttonhole valve is serviceable, then gasoline evaporates minimally during the storage, but any leaks worsen the quality of fuel.

After all, volatile hydrocarbons evaporate, and the remaining liquid absorbs water from the air. As a result, the combustibility of gasoline in the tank is insufficient to ignore the spark of a candle, so it is impossible to start the motor.

To correct the situation, it is necessary not only to drain the old fuel from the tank, but also to remove it from the carburetor.

This can be done in two ways:

• remove the carburetor, disassemble it and drain the remnants of gasoline;
• To pump up new fuel with a primer, and then, tens of times twitching the starter cable, pump the old gasoline through the combustion chamber until the new fuel appears there, then dry the candle.

The first method is more difficult technically, because not everyone can correctly disassemble and assemble, as well as install a carburetor in place, and then connect it.

The second method requires high endurance and patience, because you have to pull the cable for more than one minute, while choosing a free move each time, because if this is not done, then you can damage the starter mechanism.

The engine starting procedure is broken

In the instructions for the operation of each model of a trimmer for grass, the engine starts the engine, both after winter storage or purchase, and during operation.

In addition, you will find universal instructions for launch in this article. Violation of the recommended order often leads to the fact that the owner of Motokos cannot start his device.

In this case, we recommend:

• re.read the instructions or an appropriate article;
• dry the candle (often during the wrong launch it is filled with gasoline or fuel mixture);
• start a trimmer for the grass in a regular way.

A short circuit of wires

To turn off the engine, the switch connects the wires suitable for it and shunts (closes) the ignition system for low voltage.

Under the influence of vibration and due to the use of wires with poor-quality isolation, the latter sometimes grows out, which can lead to a closure.

Such a short circuit performs the same function that the trimmer button for the grass is turned off the “turned off” position, so the manipulation of the button does not give any result.

To diagnose damage, remove the wire of the inclusion system button from the terminal terminal (on some models you will have to be cut or dropped out), then measure the resistance in the “inclusive” and “off” tester between this wire and engine body.

If the button and wiring are working, then in the “inclusive” mode the resistance will strive for infinity, and in the “off” mode will show a short circuit.

If the wiring is damaged, then:

• disassemble the working handle;
• Saving or cut the wires suitable for the button, as well as to the ignition system and the engine;
• Pull the old wires and insert new instead;
• Sold or connect new wires using terminals;
• Collect the handle.

The ignition system is faulty

Here are the main malfunctions of the ignition system:

The wrong gap between the magneto and the ignition coil

Two magnets were inserted into the aluminum flywheel of the engine. When the motor works, the flywheel rotates and the magnets pass by the ignition coil, forming in it the pulses of the electric motor (EMF), and two magnets provide 2 times more energy than one.

This energy is stocked in the condenser inside the ignition unit and after the passage of the second magnet the accumulated energy in the form of a single pulse enters the transformer, which is the ignition coil.

The effective exposure of magnets is possible only at a small distance, so the ignition unit is fixed reliably, but the flywheel is installed in the high temperature zone, and its ribs create an air flow, blowing the motor.

Therefore, many motos models provide for the possibility of adjusting the gap between the flywheel and the block.

If the ventilation holes of the casing are clogged, then the temperature of the flywheel becomes too large, which leads to a stronger temperature expansion and the flywheel begins to cling to the ignition unit.

This leads to the appearance of a much stronger vibration, which is why the block is moved away from the flywheel under the influence of strikes, which leads to an increase in the clearance in the cold state.

And the larger the gap and less the speed of the coil through the magnetic field, the lower the EMF, which means less spark energy, which leads to a difficult or impossible launch “for cold”.

The optimal gap between the core of the coil and the flywheel magnets is 0.2 mm, about the same thickness at the wall of plastic bottles of sweet or mineral water.

Therefore, for diagnosis, make a probe from such a bottle, cutting it down, then the probe will curl and tighten the flywheel, or you can use a probe to adjust the heat clearance of valves.

Other malfunctions and their causes

In this section you will find recommendations that will help you determine and eliminate the problem if the trimmer for the grass has stopped starting.

We have collected here the most common malfunctions, as well as a list of possible reasons that lead to them.

This will help you quickly conduct a check and determine the real reason why the lawn mower stopped starting.

There is a spark, and a candle is dry

If you checked the spark with a discharge and it pierced a distance of 1 cm, then change the candle, and if this does not help, look for why the fuel does not enter the combustion chamber.

After all, if it had been received, then the motor would work, and with an excess of fuel, the candle would be wet.

If there is a spark, and the candle of the lawn mower is dry, then to establish the cause, do the following:

• Check the fuel hoses and filter;
• Check the primer valve;
• Check if the carburetor is clogged;
• Look for air leaks.

Having discovered the problem, repair or replace the damaged part.

There is a spark, and the candle is wet

If the discharge showed that there is a spark of sufficient power, but the candle is wet, then there is too much gasoline or too little air in the combustion chamber of the lawn mower.

These are the possible causes of such a malfunction:

• faulty candle;
• exhausted gasoline;
• Dirty air filter;
• a layer of soot on a candle;
• Air damper jam.

Conduct diagnostics as described above, then eliminate the problem.

The candle is wet

If there is nothing to check the spark, then to all the possible malfunctions described in the previous section, add the problems of the ignition system. Then conduct a full check of all the trimmer systems and devices for the grass, because the reason may be anywhere.

Do not start “on hot”

If a benzotrimer is poorly started or not started “on hot”, then possible reasons:

• Dirty air filter;
• the ventilation holes from the hand of the manual starter are clogged;
• The wrong gap between the flywheel and the ignition coil.

Check all systems and details as described above, and also adjust the gap between the flywheel and the ignition unit.

Not starting “on cold”

These are the possible reasons why the benzotrimer is poorly started or not started by the “cold”:

• fault of the air damper drive;
• air leakage;
• Primer faulty;
• too much gap between the flywheel and the ignition unit;
• scored sapunes;
• Piston rings lay down.

Check everything as described above, then eliminate the cause.

Badly starts in all modes

• Dirty Sapun;
• old fuel;
• air leakage;
• dirty candle;
• The wrong gap between the flywheel and the ignition unit.

Check everything as described above, then eliminate the cause.

There is no spark

If there is no spark, then the possible causes of the malfunction are the following:

Starts and stalls immediately

Check everything as described above, then eliminate the cause.

Why the motor stalls?

We made a brief review of situations when the lawn mower stalls in certain conditions, as well as a list of possible reasons.

In the vast majority of cases, it is possible to eliminate the causes of an unplanned stop of motorcycles only in the workshop, even if it is located in your garage, but even understanding the correct order of action will help to quickly find the source of the problem.

When pressing gas

To determine the reason why the benzotrimer does not start or stall when you press the gas, act like this:

• Check the condition of the saapun;
• Check the condition of the fuel hoses and filter;
• Try to adjust the fuel supply at high speeds using the corresponding screw.

If all this did not help, it is necessary to disassemble and rinse the carburetor, as well as look for an air leak.

At high speeds

To determine the reason, act like this:

• Make sure the soundtress works fine;
• Check the hoses and the fuel filter, perhaps they are clogged with dirt;
• Increase the fuel supply using the corresponding bolt on the carburetor;
• Check the condition of the candle;

If these actions did not help find the cause, look for air leaks and check the carburetor, maybe it works incorrectly or clogged with dirt.

On idle

If a trimmer for grass stalls in idle, but gains momentum and mows grass, then there are only two possible reasons:

To check and exclude the first malfunction, try to increase the fuel supply with an idle screw, if the adjustment does not give a result, remove the carburetor and look for the air leakage site.

Does not gain momentum and stalls

Here is a list of possible reasons that the device is not gaining momentum:

• old exhausted gasoline;
• Dirty air filter;
• clogged sapun;
• clogged fuel hoses and filter;
• faulty or dirty candle;
• Air suction between the carburetor and the engine.

Starts and stalls immediately

The reasons that the benzotrimer starts up and stalls immediately: can be:

• Dirty fuel filter;
• clogged sapun;
• clogged with mud or damaged carburetor;
• damaged vacuum hose connecting the engine carder or carburetor.

After warming up

If the lawn mower stalls a few minutes after the start of work, then most likely the reason is:

Under load

Sometimes the lawn mower stalls under load, that is, in the process of work, here is a list of possible reasons for such a malfunction:

• clogged gasoline hoses or fuel filter;
• Dirty air filter;
• Coopy covered with soot;
• exhausted fuel;
• air leakage;
• clogged with mud or a resolved carburetor.

How to avoid breakdowns of motorcycles?

The only way to avoid situations when the gasoline trimmer for the grass stalls spontaneously is the proper maintenance of the apparatus, which we talked about in this article.

Timely carry out all the regulatory work, and during the inspection and check of the trimmer for grass, be as meticulous as possible, this will find the problem before it begins to influence the operation of the apparatus.

Remember. all gasoline motors that are installed on motorcycles are arranged so that they cannot stop working without a serious reason, so after even a single spontaneous engine stop, do complete diagnostics.

Features of replacing and adjusting the clinic belt

Some models of lawn mowers use polyclinic or so.called streaming straps. They differ in a large efficiency of transmission of torque, and therefore are usually installed on pulleys with a relatively small diameter. Clinical belts are found in professional lawnmands designed for long and variable loads. They are also common on many batteries.

Replacement and adjustment is performed according to the following algorithm:

• Install the lawn mower so as to gain access to the drive mechanism.
• Unscrew the screws fixing the protective shield in the rear of the lawn mower.
• Unscrew the cutting of the cutting nozzle.
• Unscrew the nut of the belt tension roller.
• Remove the belt from the drive mechanism.
• The installation of a new belt perform in the sequence, reverse disassembly.
• Check the belt tension.
• If it sags more than 4-5 mm, weaken the bolt of fastening the tension roller and achieve a stronger tension.
• Make sure the new belt does not hurt the elements of the gas mowing housing.
• Install the cutting nozzle and protective shields in place.

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.