The throttle of the Chinese lawn mower jams. The lawn mower is not started on a cold

Why is a trimmer not starting for grass: searching for causes and their correct elimination

The reasons why the lawn mower stalls is a huge number, we offer the most common of them, and we hope that you will find your own, and, of course, eliminate it. So, one of the situations is to clog the air damper, then the hole behind which the fuel is sprayed. If something got into it, then it can most often be quickly and easy to remove. This is the simplest reason, like a clogged filter. It needs to be washed in the solvent, and then get it well with compressed air. If it is not subject to repair, then order a new one in spare parts from the Kosikos store.

Similarly, when you press the gas, the tool stalls because the drive has clogged. The following option is possible: the fuel does not come in full, so you need to check or replace the fuel filter. To other possible reasons, the stalled motorcycles, when you give gas, should be attributed:

To all these reasons for which the mechanism stalls when adding gas, we will add several useful recommendations for the treatment of a motorcycle. First of all, before starting working with any equipment, you need to read the instructions. In this case, an important role is played by the consistency of gasoline and oil, correctly prepared by you, and also not to overheat the unit, and not leave gasoline for the winter when you simply will not use the machine.

In the full work of any tool, an important role is played by the coordinated work of all its components. And if in one it. then in another piston or carburetor. Motokos owners who want to use their tools at full power, you need to understand that the load on which the capacity of the machine is not designed may simply break the entire mechanism or its individual parts. Therefore, only competent and moderate operation involves the long.term effective work of any benchmate tool.

The trimmer stalls for grass at idle. the causes and their solutions

To common situations why the trimmer for grass stalls

or a lawn mower, it is worth attributing its work at idle. Let’s immediately move on to the reasons:

heating the gearbox and sleeping on the drum as a result of the fact that the gasoline solution is not prepared correctly. The required proportion is 1: 4; carburetor pollution; The throttle flashed; When opening the damper (if the experiment was carried out), the air flow makes a mixture of the “poor”; Ringing the carburetor; clogging of the air filter;

The insufficient amount of fuel that you need to work as a gas tool will entail a situation when at high speeds, with an increase. a trimmer for grass works and stalls in idle. In a situation with a carburetor. the device will stall for a cold launch and “on hot”

For any user, Motokosa. Professional and Amator, it is important to understand that any tool problem can depend on the petty flying of the part, the release of fastening or clogging, as well as on the global breakdown of the important part of the mechanism

A newcomer and experienced owner may face the problem of the stalled motorcycle, the situation arises with those who have been in use and completely new braids, and which ones we will understand this article. So, the tool can stall under load, immediately after starting, that is, it starts and stalls, when heated by the entire mechanism, at high speeds, or does not even gain momentum and stalls. In all these cases, in fact, the same systems, elements, nodes are involved, but the breakdown or malfunction of each of them, more precisely, the nuances, cause an individual above situation. The answer to the question of each user: why does the lawn mower stall

, You will get only on our website in the section of news articles.

To completely deal with your individual situation. carefully read the signs and related nuances at the time the braid for the grass stalls, and then it will be easier for you to find a way out and quickly solve the problem. If you need certain. then to do this wholesale, and the best store of gas.tools in Ukraine will allow retail, Benzo Zip will allow for Ukraine.

There is a spark, a candle is wet

First of all, it is necessary to remove the muffler and carefully inspect the piston, since it is there that the problem may be hidden. But the chainsaws still do not start or stall, the saw does not start, Partner 350. In addition, most owners ask the question: why the chainsaw is starting and stalling, while supposedly there are no problems with candles?

But this is an erroneous opinion and you do not need to be so confident in this case, so there are a situation where the candle sparkles perfectly in the air, and does not work directly in the cylinder.

The reason for this may be a direct violation of a peculiar seal in the canal (impulsive). Or so de has a peculiar production of crankshafts, but this feature is found in very rare cases.

STIHL MS 660 chainsaws are the most economical of the entire line of chainsaw STIHL.Her

The throttle of the Chinese lawn mower jams

Thank you, father! God grant you health. really helped) if not for you. then I would have to carry it to the service, and there the guys would have ripped off for the “replacement” of the spring))

Alexey Kurteev

A year ago, I did so, so far everything is the way. Father helped me with health

Oleg Resetnak

Alexey Kurteev

Respect for you Dad, I created everything, everything works. Everything was simple and accessiblely explained

Kalash

Thank you so much. I suffered for 3 days))) helped. Just a handsome man

mr.Clean_si

Vizunchik 888

Kolya Akimov

how much revolutions the needle itself should be twisted?

Vedenko Damir

Thanks to Uncle Misha very much helped you good

Vasily Dobvovetsky

Thank you very much. A very good video. I didn’t know what to do. Now everything is ok.

Sergey Bogachev

Roman Lisova

Good afternoon! Maybe this is not a question for this video, but still. The problem is this: after 10-20 minutes of work, when the gas button is released, the reel/lamp of the lawn mower extends. over, not at constant speeds, and the trimmer for the grass begins to “accelerate”. How to solve this problem?

Murad Ibragimov

I also did everything. The spring was slightly twisted. And now he doesn’t jam. otherwise she froze. True, when I twisted the spring flew out, but I was lucky, I found it

Ru St

How exactly to make it possible if you say that the spring is spreading if we do not hold the damper with the Palts?

This is me

kasa55rus [norm]

Sasha Denisyuk

Great uncle, pre.sopomol. Video class is available!

aleks r

And if the damper drive goes very tight?

Vladimir and

Kotova Alexander

Yes, you can see techies immediately. With a capital letter.

Anton Moto

I broke two remote controls, or rather the buttons, bought it not killed, and the damper began to click even more. Now you get tired not from mowing the grass, but from pressing the button. There is a hole in my damper in which the return spring is installed in the salting. If I turn the salting 180 degrees or the spring does not fall into the hole or the force of the return spring becomes insufficient. At the same time, the upper part has hits of different widths and in another position the upper rotary part also cannot be installed. I will somehow get out of this situation. Such a primitive carburetor, but such a mower

Breeze draft Vetrovich

Roman Lisova

In addition to the above: 1) when the lawn mower is launched, the knife does not spin at idle. 2) I checked the clutch, the spring is not divided, and not cracked. 3) Demosyllae when the gas button is released, completely goes to the original position.

Vladislav Tkachev

Carburetor pants were well twisted?

Andrei Baymirzaev

And I had to drive the damper with a zero, sat in the well very closely, the nudding was lazy, now the damper is running around. Thank you for the video, I took note!

Andrei Baymirzaev

skeptical

Andrey, thanks. I read your post, dismantled the carburetor, clamped the damper into an electric screwdriver, passed 1000, everything worked! I would be thumped with you!)))) With apple rescue and health to you and loved ones!

Alexander

The cable pulls the shuttle drive, as it were, not much from the bottom up, on the rush, and the damper is rubbed on the wall of the carburetor one side

To come in

Similar publications

Hello. Question to the masters, to those who are in the know, tell me how many revolutions per minute the native collection engine of the minimum of the Huter W105-AR minimum, and the like with the same engines. The engine burned down, and I don’t want to buy a new one, which also burns. The asynchronous engine of 1.1 kW 2900 revolutions was striking to the driven gear of the pump. The pressure appeared, but some kind of weak, the other day, the manometer is so thrust and see how much it presses. When the trigger is released, it turns off, the start-stop valve immediately works. And in the working mode weak. Huter said that the manufacturer does not give information such. I need to find out how much revolutions in my native engine in order to calculate by the transfer number, how much the speed is reduced on the driven six. How the sinks with asynchronics work the same. Thanks

P.S. I already ordered a laser tachometer to measure the momentum of the collector engine on an approximately the same device. Just wait until the package comes for a long time, maybe someone knows how much revolutions there.

The name, in this case, does not matter. I will pour everything that comes across here. The first “start”. was purchased by our office for its own needs. Died in a week, was written off and safely settled with me. Laying out during the year. was lively and launched. The result of a two-year run. 60-70 rental days. Patron loss and three sets of 203 Makita brushes.

Non.working oil. Oil from Novya under the lid, no one changed or added. From old age and overheating, it seems more to jelly from Olifa. I just poured 30-40 semi-syntratics in the piston once a year. he did not demand more.

This client. The reason for the repair of the anchor. There were no complaints about the blow

This is for those who are trying to find out. how much oil is pouring, or what is better than Mobil 1, or Mobil Special.

Carburetor Carburetor

If you need advice on professional cleaning the carburetor, check out this article. In it you will learn how to clean the carburetor of a two.stroke engine and under what circumstances you may need to clean it. The carburetor of a small engine is usually cleaned when the carburetor is restored, but there are a number of reasons why you may need only to clean it.

Proper cleaning of a two.stroke engine carburetor implies a complete disassembly and assembly of the device. The steps are explained below how to disassemble, clean and assemble the carburetor of the two.stroke engine.

Advice! There are many small details in the carburetor. Keep the details in a convenient manner for you to assemble the assembly quickly and accurately.

Unscrew two screws that attach the lower cover to the carburetor body. On some models, the lower cover is attached by four screws.

Remove the diaphragm and layout of the diaphragm and divide them if necessary.

The diaphragm will be easily disconnected after you remove the lower cover.

The diaphragm laying often adheres to the diaphragm, therefore, if they are glued, they must be divided for subsequent careful cleaning.

Remove the needle valve mechanism.

The needle valve mechanism consists of three parts: needles, lever, and springs. It will be seen after extracting the diaphragm.

The mechanism of the needle valve holds a ktykvetzhny screw. Unscrew the needle valve screw to extract the mechanism from the carburetor housing.

Make sure that the spring remains in place after you remove the screw. She can fly out and you will lose several important valve details with her.

Do not forget to fold the carburetor parts in order during disassembly.

Disconnect the primer and the plate holding it.

The primer holds the plate screwed with two screws in the case. Unscrew two screws that hold the plate.

Remove the base of the primer and the plate valve of the carburetor.

By unscrewing the screws, you will free the base of the primer from the carburetor housing.

Put it aside for cleaning. Look at the thin plate valve between the base of the primer and the carburetor body. Carefully disconnect it: it is very important for the proper operation of the device and requires careful handling. If you damage it, then most likely you will have to change the entire carburetor completely.

That’s all! You completely dismantled the carburetor of the two.stroke engine and all parts of this device are now ready to clean.

You will need the following to clean your carburetor:

The cleaning procedure for each part of the carburetor is approximately the same and consists of the same steps:

Clean the outer part. 2. Clean the inner part. 3. Dry the parts. four. Be very careful with sensitive parts.

Start with the carburetor case and do not be afraid to use a lot of cleaner.

Clean all holes in the case and the paths along which fuel passes.

Dry the body thoroughly with compressed air (if available) and put it on a towel to continue drying.

Go to other parts of the carburetor.

The internal holes of the primer require cleaning, as well as the holes on the carburetor body.

There are several parts of the carburetor that need additional consideration and specific cleaning, including a plate valve, a mesh filter on the case, and the diaphragm. The plating valve must be cleaned very carefully. Use less cleansing unity so as not to damage the details.

Quickly dry the plate valve and put on a clean towel. Many carburetor designs include a small mesh filter on the case. This filter is easily damaged when removing. It is better to leave it in place if there are no replaceable filters. The diaphragm is another part that requires delicate cleaning. The diaphragm is made, as a rule, of rather thin rubber, so if there is no spare at hand, it is better to clean it only with extreme necessity.

The needle valve has a bifurcated shape. The upper part of the needle should enter the bifurcated part of the valve, as shown in the figure below.

Replace the needle valve spring.

Just place the spring back in its slot in the carburetor case.

How to launch a gasoline trimmer for grass: 3 beginners errors

Self.confidence, own strength, knowledge and skills is a characteristic feature of a Russian person. It manifested itself among both of my experienced neighbors when they began to start the label of the lawn mower unknown to them as their usual gasoline tool.

Do not repeat this error, first carefully read the instructions specially written for us by the manufacturer. Only after its comprehension can the lawn mower can be started.

The rules for starting the design of my trimmer for grass are shown by text and a visual picture in the manufacturer’s manual.

Compliance with the indicated sequence of actions will allow a long time to operate the lawn mower. It is important to remember them.

The primer of swinging (manual gasoline pump) pumps fuel in the carburetor line. Pre.click on the button several times. Without this, the lawn mower will not start.

The control of the trimmer is concentrated on the right handle with a throttle flavor that performs the functions:

• lever to block the positions of buttons from random switching;
• gas control keys;
• modes switch:
• cold start;
• working position;
• stop.

It is convenient to do all this at the same time with the palm and fingers of the right hand. Show the main tricks in the photo.

The ignition is automatically. There is no external button, it is blocked inside the handle with the position of these switches and is not specially bred.

Separately, the clutch should be said. It shares the drive of a trimmer for grass and its engine. Clutch control occurs automatically: when the ICE starts after pressing the gas key.

During the factory of the lawn mower, its case must be placed so that in case of accidentally turning on the clutch, do not harm people, animals and surrounding objects. Rotating working organs: a mowing head with a fishing line, and even more so a knife can create serious problems.

My experts assistants, working with other structures of gasoline engines, did not know all the nuances of the operation of my model and simply poured fuel into the combustion chamber.

A flooded spark plug receives an anti.skill barrier. When the spark is absent or weakened, the engine is not started.

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.

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.

Elimination methods

The list of upcoming work with the engine may be as follows:

• replacement of the fuel pump;
• disassembly and flushing of the mesh filter;
• replacement of the adjusting lever;
• It is also necessary to clean the adjustment space;
• replacement of the membrane (or the entire block where this membrane is located);
• setting in intake, graduation and needle valves;
• replacement of the damper;
• cleaning the fuel channels and diffuser;
• replacement of springs of screws;
• Change of primer.

Not all these works can be completed. It often turns out that many of them have no need if a specific malfunction is immediately discovered.

Carburetor adjustment on a benzocos

DIY diagnostics and adjustment with your own hands can take only a few minutes.

Wash the filters before it (see. instructions). You can set the carburetor yourself with the help of three adjusting screws.

To do everything right, run the motor. Your actions are as follows.

• Find limit speed at idle. To do this, unscrew the screw l to the right, and then to the left. Turning step. a quarter of turning counterclockwise.
• Using the screw t, you can configure the idle speed of the motor: increasing when rotating the screw clockwise, decrease. on the contrary. The adjusted engine confidently works without load and without warming up. Heated. does not overestimate the moment.
• If you set up not a motorcycle, but a trimmer for grass, then the rotor of the screw t sets a greater margin of turnover per minute. For devices of both types, stable turns are set when choosing a mowing height with a knife (or fishing line).
• The last rotate the screw h. He sets the rate of supply of gasoline with air at maximum speed, engine power, motor heating temperature and fuel consumption.

To configure the motor from the screw h, do the following.

• Open the throttle and squeeze the gas at maximum speeds.
• Twist the screw h clockwise until the engine speeds are reduced.
• Twist slowly the same screw counterclockwise until the engine gives out unstable speeds.
• Take the screw back a little (clockwise) until the motor does work smoothly. It is important to catch this line.

The result of the exact adjustment is the complete combustion of fuel and the white-brownish color of the spark plug. The candle flooded with gasoline is much darker than the unbearable.

How to adjust the carburetor of the lawn mower, see further.

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, set up on your own and it is necessary. For example, adjusting the carburetor of the lawn mower with your own hands is the matter of five minutes.

The carburetor from the lawn mower is a node in the power supply system. In it, like any carburetors, there is a process of mixing air and fuel (gasoline) for further supply to the motor cylinders.

In this process, the main thing is the correct proportion of fuel and air, for which the carburetor is regulated.

Features of diagnosis

A well.posed question is already half the answer.The fact that the gasoline trimmer for the grass or the lawn mower stalls, namely, will significantly accelerate the search for a solution

• immediately after the start;
• when it works for some time idle. after one or several minutes;
• when pressing the gas button (or handle). or shortly after the start of work at high, permaximal speeds;
• under an enhanced load (for example, to cut the bushes, mow thick and high weeds);
• when warming up in the cold, it heats out excessively (the lawn mower stalled around overheating);
• After the opening of the air damper.

Depending on which of the circumstances was clarified during the pre.diagram, the exclusion method is looking for a more specific reason for the malfunction of motorcycles or a trimmer for grass.

Immediately after the start

The stalling of motorcycles or a trimmer for the grass immediately is due to the following reasons:

• impressive of previously adjusted valves;
• Initially incorrect setting of the valve mechanism;
• clogging with fuel supply valve;
• the hose is worn or poorly attached.

Due to the violated fuel injection algorithm, a lawn mower or a trimmer for grass is greatly vibrated in work.

When opening an air damper

A lawn mower or a trimmer for the grass stalls for raising the damper for the following reasons:

• swinging excess air due to the cracked fuel suction hose;
• sealing oil seals;
• improper functioning of the fuel and air dispenser when mixing them.

Stop motokos in this case is immediately.

In the process of warming the engine

If the engine heats up too fast, overheating. a lawn mower or a trimmer for grass works unevenly, as if jerking. After which she stalls.The reason may be as follows:

• boiling gasoline;
• The ignition wire was damaged (poor insulation);
• The coil in the ignition system has noticeably burned out, inter.seal circuits appeared.

The same heating is observed when using rotary (not disk) damper.

When working idle

Having launched a trimmer for grass or a motorcycle at idle, you find that the device is starting up. but it swallows, after working, say, 5-10 minutes.The reasons here may be as follows:

• clogging, violation of carburetor adjustment;
• Initially incorrect configuration of the valve mechanism of the carburetor;
• air filter clogging;
• reducing the speed of the gearbox (if any). the incorrect ratio of the fuel mixture;
• clogging the throttle;
• penetration of excess air into the fuel system;
• The fuel ends in the tank (and oil in the tank, if the engine is four.stroke).

If there are problems directly with the carburetor, the machine will stop both after a cold start and after launch on the already worked engine.

When pressing gas

If the lawn mower stops when pressing the gas, then the reasons may be the following.

• The most common option is Carburetor adjustment failure. which occurs with significant loads on the drive, after prolonged inaction of the mechanism or when using it in severe conditions.
• Flaw valve clogging. which eliminates it with the message, as a result of which gasoline according to the system begins to flow normally.
• The weakening and hanging of the cable in the carburetor. It can also arise Stretching of the fuel hose up to its break, caused by the action of a significant load.
• The clogging of the sapun (check valve), as a result of which fuel does not enter the tank.

If the problem is associated with the carburetor node, then it can be recognized by the appearance of vibrations of the lawn mower

Когда лопается шланг или растягивается трос — выполняют замену данных комплектующих.

How to properly adjust

Before setting up the carburetor trimmer for the grass, it is necessary to do the following:

• Rinse the engine;
• replace or clean the spark plug;
• change to a new one or clean the air filter (it is recommended to lay it out in warm, soap water, squeeze it out and let it dry well).

It is also necessary to install the cord of the right diameter in the trimmer coil or install knives-this is done so that in the process of configuration the engine has at least some load. After installing a cutting tool and starting a gasoline engine, let it warm up for 10 minutes.

If at the idle speed of the motor you noticed that the cutting tool rotates, then it is necessary to reduce engine speeds. This is done using the lower idle regulator, often marked with the letter “T”. The figure below shows the placement of regulators on the trimmer Husqvarna.

But, for example, on the STIHL trimmer, this screw may have a label “LA”.

So, turn the idle control regulator to the left, until the trimmer head is completely stopped.

To configure the carburetor, 3 regulators are used (screw).

• The right regulator L tunes the level of enrichment of the combustible mixture at low speeds. It needs to be adjusted by the first. Get a maximum of turnover at idle. This is done using the regulator L, turning it to the left and right. After finding the point of maximum revolutions, return the regulator for half a turn to the left (against h. Arrows).
• The lower regulator t (LA) is used to configure idle. Turning it to the left, the engine speed will begin to decline, and when the regulator is turned to the right, the revolutions will increase.
• Left regulator h is responsible for enriching the combustible mixture at high speeds. The enrichment configuration completes the adjustment of the carburetor. Also, using this regulator, you can configure maximum speed, fuel consumption and engine power.

Important! If you allow the engine to operate at full speed for more than 10 seconds, then it may fail.

To exclude this trouble, adjustment will be required. With the working motor, give a full gas, then turn the “h” regulator to the right until a reduction in revolutions begins. After that, the “h” regulator must slowly scroll to the left until you hear the uneven operation of the engine. Then the regulator “h” should be rotated to the right until the moment of flat operation of the motor is heard.

After conducting the above actions, the setting of the carburetor can be considered completed. After proper adjustment, the engine must confidently gain momentum, a little four at a maximum of revolutions, and when working, an idle cutting tool should not turn. This manual is suitable for adjusting carburetors on the Huter, Patriot and others benzocos.

There are also carburetors without a screw that is responsible for enriching the combustible mixture at low speeds. That is, they have only 2 adjusting screws: a idle regulator and a quality fuel mixture regulator at high speeds. How to configure a carburetor of this type, you can find out from this video.

Step.by.step instructions for repairing carburetor motorcosa

Dismantling the carburetor

Visual inspection of the carburetor will help to identify the leakage of the fuel of the air mortgage, but the main reasons for the refusal of the device lie inside. Therefore, in order to determine and most importantly, correct the breakdown of the carburetor must be disassembled.

To disassemble the carburetor, Motokos is not necessary for a lot of effort.

It is enough to unscrew the four screws on one side

And two on the other. This can be done using a regular crossbreed. Unscurately unscrew the screws and put it to the side. They may be needed when assembling. It is advisable to cover the table with a white cloth before disassembling, so that everything is visible, even the smallest details that may fall out during disassembly.

Step

We start disassembly from the fuel supply system.

We remove the primer. a bubble of swing, which is noteworthy, when assembling, installing parts of the carburetor is simply impossible. Products have characteristic castings and holes.

Step

Now remove the membrane. It is she who performs the function of pumping fuel to the carburetor.

With the vibration of the membrane, the other side exerts the pressure of the rocker of the mechanism and the needle rises, which, in turn, opens the hole and the fuel supply occurs.

Step

Remove the carburetor lid with the injection mechanism.

Step

Next, another membrane has been installed. We carefully remove it.

Step

Under the membrane there is another gasket. We also carefully remove it, in no case damage.

Step

Then we move on to the dismantling of parts from the back of the carburetor. As, earlier, we unscrew two bolts. This is already an air supply system.

There is a valve here, which, when the gas is added, opens and increases the air flow into the engine.

After its removal, the bare case remains in the hands. The carburetor is disassembled.

Determination of malfunctions and their elimination

Now it is worth paying attention to the problems that happen when the carburetor is operating and the methods of eliminating them.

Problem 1: Zaror of holes, channels and nozzles with mud

The first thing that happens is the holes and nozzles in the fuel supply system clogged with dirt. Filters installed in the tank and directly in the carburetor do not help. They still miss small particles, which cause motorcycles to fail.

Step

To do this, unscrew the bolt on the mechanism, holding it with a finger. The fact is, there is a spring and a careless action will lead to the fact that it will be lost.

Step

How to make a purge. The most effective way is the use of an ultrasound bath.

It is filled either with a special liquid or gasoline, a carburetor is placed there and under the influence of ultrasound, the so.called cavitation effect, the channels are cleaned from pollution.

The second cleaning option compressed air.

You can use the compressor available on the farm and clean the carburetor channels. However, this method is effective if the pollution is not very large.

If there is no ultrasonic bath or compressor at hand, then cleaning can be carried out in the third way using a special cylinder for cleaning the carburetor. They are sold in almost all car stores and supermarkets. The price is low and equals about 2-3, there is enough such a cylinder for 4 or 5 purges.

Step 0

Now we need to blow the channels in the case and the carburetor lid. See photo.

Step 1

Another particle of dirt can get stuck under the needle. Cm. a photo. This will also lead to the refusal of motorcycles.

Important! When cleaning the carburetor, in no case should not be used with needles, pins or wires. Even the slightest scratch will withdraw the carburetor from the system. It will have to be changed in its entirety.

Problem 2: Flaw clogging of thin cleaning

It is located on the cover of the carburetor and is a small metal mesh. Its pollution occurs very often. This is due to the precipitation of oil, additives, mud on it.

Step 2

Sometimes when disassembling the nets, a certain film is found. This carburetor lacks fuel and the lawn mower is either not starting or working with interruptions. The treatment methods are identical to the first reason: ultrasonic bath, compressor or spray can with a special solution. In addition, if the net is clogged thoroughly, you need to take a soft brush for watercolor paints, get wet into gasoline and rinse it carefully without damaging it.

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.

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, the 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.

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.

The alternate execution of these actions will correctly configure the fuel node of the trimmer for the grass, without the risk of exceeding the permissible load on its main working mechanisms.

The main problems and malfunctions of the carburetor.

Mesh filter. There are only two problems 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 dirt just accumulated on it, then flushing in gasoline or purging will help.

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

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

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