Carburetor adjustment Motokos STIGA SB.

Device and adjustment of the carburetor on benzocos and trimmers

A lawn mower or a trimmer for ICE grass requires not only a constant refueling of the fuel mixture of gasoline with oil, but also periodic adjustment of this fuel supply. The carburetor is responsible for the supply of fuel to the lawn mower cylinder, the effectiveness and performance of the tool depends on the good operation of which. If in the process of operation a faulty (abnormal) engine operation is detected, then the first step is to adjust the carburetor of the lawn mower. Before setting up a carburetor of a gasoline trimmer for grass, we will first figure it out with its design.

Lawn mowers are equipped with internal combustion engines of a two.stroke type. To supply a fuel mixture to the engine cylinder, a carburetor is used. In the design of gasoline units is a key element without which ICE is impossible. over, this carburetor differs from the car device not only in size, but also by the principle of operation. In particular, this difference is the presence of a membrane that plays the role of a gasoline pump. It is due to the presence of a membrane that the devices considered in the design of two.stroke internal combustion engines are called membrane.

Structurally, the entire mechanism is a small part, inside which there are channels, valves and membranes. The carburetor case is made of aluminum, and the internal device is shown in the photo below.

Before adjusting the carburetor of the lawn mower with your own hands, it is necessary to deal with all the constituent elements of the device in question. The carburetor of the lawn mower and a trimmer for the grass consists of the following details:

• Venturi diffuser or nozzle. through this nozzle, air is absorbed into the system
• Air damper. opens and closes the feed of filtered air
• Fuel channel maximum revolutions
• Fuel channels (nozzles) of the idle speed of xx and medium revolutions
• Throttle. the opening value is regulated by pressing the gas
• The fitting of the pulse channel. connects to the internal channel of the engine crankcase
• Inlet fuel channel (fitting) (2). the supply of fuel from the gas tank is ensured
• Membrane (4). is responsible for absorption of fuel from the gas tank
• Fuel absorption valve from the tank (3)
• Fuel supply valve to the carburetor channel (5)
• Filtering element (6) or filter of fine fuel cleaning
• Fuel channel (10)
• The needle of the needle valve (14) is responsible for supplying fuel to the chamber of the control membrane
• Camera. fuel mixture, which is supplied through nozzles and throttle ditch into the cylinder
• The control membrane (18). is ensured by the manual fuel sucker primer
• Lever connected to the membrane (17)
• Idle adjustment screw (15)
• The adjustment screw for the amount of fuel supplied to the diffuser (13)

Having an idea of ​​how a carburetor is arranged inside, you have to deal with the principle of its work. A detailed description of how the carburetor works on a two.stroke internal combustion engine on the example of a chainsaw is described in this material.

How the gas mowing carburetor works or the principle of functioning

The adjustment of the carburetor of the Chinese lawn mower is completely identical with the setting of travokosylovs of European, and manufacturers. To cope with the task of adjusting the carburetor on benzocos and benzotrimers, you need to understand the principle of their functioning. How the carburetor works on a benzos, step.by.step and available described below.

• The operation of the carburetor of the lawn mower begins with the supply of fuel through the channel, as shown in the diagram
• The absorption of fuel into the carburetor occurs using a pulse channel connected to the engine card. Due to the vacuum of air, a flexible membrane is moved under the number 4 in the diagram above
• Through valves 3 and 5, fuel supply occurs. The valve 3 is inlet, due to which the fuel is supplied to the sub.sector, and the valve 5. the exhaust
• Further, the fuel moves through the channel and, passing the filter of thin cleaning, reaches the needle valve 14
• The needle valve is connected by means of a lever with the control membrane 18
• The needle valve is driven when exposed to the membrane. When it is necessary to pump up the fuel to start the engine, it is necessary to affect the soft cover of the manual pump. When exposed, the needle is opened, and the camera is filled with the fuel mixture
• Когда же двигатель запускается (на холодную), то открытие иглы происходит за счет разрежения при закрытой воздушной заслонке. This vacuum affects the nozzle nozzles and high speeds on the membrane 18
• The membrane acts through the lever on the needle valve, through which the camera is filled
• After starting the motor, the air damper opens, as a result of which the engine operates on the depleted mixture, since the fuel is mixed with air
• The fuel mixture with a filled chamber is supplied (sucked) through the nozzle jetlays and medium revolutions (when the engine is launched)
• The throttle shift at the same time shifts from the original position by 10-15 degrees
• When the work is carried out under load, then the fuel begins to enter the chamber through a nozzle nozzle, and at the same time the throttle shift turns to an angle up to 90 degrees (depends on the force of pressing for gas). In all operating modes, an air damper should be open, through which the fuel is mixed with air, and thereby there is an ignition of the mixture in the cylinder

The following shows the principle of operation of the carburetor of the lawn mower. Based on the scheme, you can not only deal with the principle of operation, but also identify breakdowns and other malfunctions of the mechanism.

When operating the tool, it is necessary to take into account the presence of another nozzle. This nozzle is located between the channels of the idle and full power. It is necessary in order to exclude a strong impoverishment of the mixture, which occurs in the case of the engine at an incomplete load. In such a situation, the occurrence of a back of a pair is not excluded. Through the additional channel (nozzle), fuel is sucked into the chamber, through which the fuel-air mixture is enriched. Below is an additional nozzle, which is indicated by the number 1.

Having an idea of ​​the design of the membrane carburetor of Motokosa and the principle of work, it will not be difficult to configure it with your own hands. To adjust the carburetor of the lawn mower, adjusting screws are used. The scheme above shows two screws for configuration, but most modern models of gasoline trimmers are equipped with three screws. The presence of three setting screws allows you to perform a more accurate adjustment, while achieving stable and uninterrupted operation of the internal combustion engine.

It is interesting! What is the difference between a trimmer and a benzoca? Many people believe that a trimmer for grass is low.power electrical herb. However, a trimmer for grass is a generalized name for benzos, motorcycle and electric braids, as they are designed for general purposes.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Lawn mower Stiga 28. Carburetor adjustment

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Do.it.yourself carburetor adjustment

Regardless of the model of the garden tool, adjusting the carburetor of the trimmer for grass requires careful preliminary preparation. The owner of the motorcycles will need to check the spark plug, air filter and the carburetor itself. In the case of pollution, all elements must be cleaned, or, if necessary, replace.

In the standard configuration of a trimmer for the grass, 3 adjusting bolt are provided. The first of them is marked with the letter L, and serves to configure the engine when it is working at low speeds. The second bolt. is marked with the letter H, and is necessary to adjust the internal combustion engine when it is at the highest speed. The third bolt can be marked with letters T or LA. with its help the operator can configure the engine operation at idle.

The process of configuring the carburetor Motokosa is as follows:

• First you need to carry out a number of actions with the adjusting bolt L. To do this, it should be turned clockwise until it stops. After this, the bolt L requires to turn half turnover in the opposite direction. This will make it possible to configure the optimal enrichment of the fuel mixture with oxygen during the operation of the motor at low speeds;
• Then you will need to adjust the operation of the internal combustion engine in idle mode. To do this, you need to turn the bolt T in different directions in turn until the mowing head or knife stops rotating;
• At the end, you will need to configure the level of fuel enrichment with oxygen when operating the engine at maximum speed. To do this, the bolt H will need to turn clockwise until it stops, and then return it to 1/2 turnover in the opposite direction.

Signs of unbalancing

Carburetor debugging is necessarily carried out in the manufacture of the device. As a rule, the owners will learn about the need to adjust the fuel supply with their own hands only after quite serious breakdowns, in the process of correcting which, the module was removed and, for example, cleaned.

Signs of failure in the settings are the following:

• starts up, but immediately stalls the engine. since the engine can only work when a certain amount of gasoline is supplied, with too “poor” fuel, that is, overlapping the supply channel, the motor will stop;
• too much fuel consumption, many exhaust gases. the result of incomplete combustion of the mixture. In this case, the fuel, on the contrary, is too much and the mixture is excessively dense.

Do.it.yourself carburetor adjustment

The setting of the module does not apply to the repair and the change of spare parts is not required. In this case, the armored complex of the carburetor of the lawn mower will not be needed.

• L. is regulated first, as it is responsible for supplying fuel at low speeds;
• H. he is responsible for supplying gasoline at high speeds, as well as for fuel consumption and temperature;
• T. with it, the idle speed is debugged.

There are options, as a rule, this is a carburetor of a Chinese lawn mower, when only one screw remains for debugging on the case. to configure idle. This does not mean that the module is configured automatically. this means that even such a type of repair as debugging will be difficult to carry out. In the photo. adjusting the carburetor of the Chinese lawn mower.

• The module tuning is carried out only with a heated engine: for this, the device is pre.included for 10 minutes. If the mowing head rotates at idle, then they begin to debugged immediately: turn the screw T counts the clock until the rotation stops.
• Adjustment starts with a screw l. The screw turns to the right and to the left until it finds such a position in which the idle speed does not become maximum.
• Then the screw is turned on ¼ turn against the watch. This will be his working position.
• The idle stroke must be configured by turns against the sentry to increase the number of revolutions and the clock. to reduce. Its debugging consists in achieving such a regime in which a sufficient number of revolutions are performed before the rotation of the mowing head. In this case, the engine should operate steadily at different positions.
• The position of the screw L is determined by the latter. at maximum speed the trimmer for grass should not work for more than 10 seconds. The throttle opens, the screw is closed clockwork, very slowly, until a decrease in the number of revolutions is established by ear.
• Then also slowly the screw rotates against the sentry until the engine starts to work with failures. After which the screw is on the time, until the engine again works normally.

If there is a tanometer, and if the product is indicated in the product passport, coooreecration can be carried out more accurate, focusing not by ear, but on the testimony of the device. Adjustment of the carburetor of the lawn mower in the video is carried out by ear.

Motokosa carburetor cleaning instructions: Fast method

Many people prefer to use a quick way to flush the carburetor of the lawn mower. This method is effective in the case when single malfunctions of the device are detected. Consider step by step how the process of disassembling and cleaning with your own hands occurs:

After the carburetor is cleaned with compressed air, do not rush to put it on a motorcycle. Now you can check the serviceability of its functioning, or more precisely, how it pumps fuel. To do this, connect the hoses to the output fittings.

We lower the supply hose into the canister with gasoline, and download the primer.

If gasoline flows out of the return, then. work to clean the carburetor is completed successfully. Now you can install the part on the lawnical mower, and check the quality of the functioning of the tool. This is where the process of quickly cleaning the product is completed. In more detail, the entire cleaning procedure is presented in the video

How to clean a carburetor on a trimmer: complex cleaning with photo description and video

If your motorcycle is already for many years, and you feel that the tool has been working with interruptions, and attempts to configure the carburetor will not be crowned with success, then it is necessary to resort to the procedure for cleaning it. To do this, dismantle the part of the tool and, using a table with high.quality lighting, proceed to the matter. Next, a step.by.step process of disassembling, repairing and cleaning the carburetor from motorcycles is presented, which will be useful not only for beginner mowers, but also by experienced craftsmen:

It is interesting! For washing, it is recommended to use gasoline or special washing liquid, the photo of which is shown below.

This is where the process of disassembly and washing is considered complete. Now let’s bring conclusions about the work done. Video on how to clean the carburetor of a trimmer for grass is presented below.

Step4

In addition, a bubble button for manual pumping of fuel can leave the system. The effect of gasoline on it leads to the fact that during prolonged operation, the rubber corrodes and it begins to stick together or under the influence of low temperatures, for example, when stored, bursts. The button should also be replaced if necessary. In addition, its cost is small and will not affect the amount of the repair budget.

Based on the foregoing, we can conclude that there are only three main malfunctions of the carburetor: clogging of the channels, pollution of the filter of fine cleaning and the exit from the system of components. In the first two cases, there is enough cleaning, and in the third, the reptile will help.

Assembly of a carburetor

Collecting a carburetor of motorcycles is completely easy. It is necessary to perform all actions in the reverse order:

Step 5

In the cover of the carburetor, install a spring and a needle valve. Holding your finger to tighten the mounting bolt.

Step 6

Screw to the product body with two screws the air supply system valve.

Step 7

Turn the carburetor and proceed to the assembly of the fuel system system. First you need to put the gasket.

Step 1

Step 2

Set a plate with a manual fuel pump button and tighten four screws.

The carburetor is assembled and ready for further operation.

For the first time, the repair of the carburetor Motokos may seem like a complex process, but if you have to disassemble it a second time, then this procedure will not cause much difficulties.

If you have not found any of the above problems in your carburetor, it is recommended to seek help in a specialized service.

Common malfunctions of carburetors

Damage of the carburetor of the trimmer for grass occurs due to the use of poor quality gasoline, damaged air filter and the accumulation of dirt in the chamber of this block. Most often, it is quite possible to repair a carburetor with your own hands. Below listed typical malfunctions of the carburetor motorcosa.

Problems of the fuel pump

A common malfunction that “pursues” the fuel pump is a deformation of the pump membrane. For this reason, it does not fit properly, and the pumping canals are not compacted.

The reasons for the deformation of the membrane can be as follows:

Features and best models

A mowing man deserves a separate mention. characterized by its multifunctionality, reliability and ease of operation. The company’s specialists developed many varieties of braids, with various characteristics and use.

For example, the range of lawn mowers is designed to mow grass in large spaces. For this, a self.propelled wheeled system was developed, with the help of which it became possible to care for a large territory, without spending a lot of time and effort on it. For the design of shrubs, giving them a certain artistic image and texture, the lawn mower is perfect. And if you need a lawn mower for high grass and uneven areas, then follow this link and receive complete information on the selection of this type of equipment.

If you need a thinner approach to grass cleaning, for example, near flower beds or between trees, then a gasoline trimmer for grass, designed for accuracy and accuracy of execution, will perfectly cope with this task. The company’s specialists provided all the nuances and probable difficulties when working with braids, so they supplied them with nylon strings that prevent mechanical damage to trees.

Autocut special trimmer head is also used, which provides the normal functionality of the string knives of the benzotrimmer. This article will tell you about the of gasoline lawn lawns for grass, this article will tell you, it will also help you make the right purchase that you will not regret.

Two types of these mowers are distinguished: amateur and professional models designed to solve problems of a certain complexity. The first category includes FS 38, FS 45, FS 55, etc. Features and differences of these tools are the power of the motor (from 0.9 to 1.2 liters.With. Depending on the configuration) and the volume of the tank (approximately 0.34 l).

Professional include trimmers for the grass Stihl FS 130 and FS 250. Consider the characteristics and properties on the example of several braids, in particular FS 38, FS 70 and FS 130.

Watch the features of the device on the video.

Gasoline lawn mower FS 38

The model is primarily distinguished by its simplicity and compactness, which is enough for the proper care of the house area. The main control keys are located on the device handle, which significantly facilitates and speeds up the work.

The price of the STIHL FS 38 mower is about 130.

• engine power. 0.9 liters.With;
• engine volume. 27.2 cm3;
• tank volume. 0.33 l;
• engine type. two.stroke;
• The bar is straight;
• The handle is D-shaped;
• Complete set-2-toothed trimmer canvas for grass, protection glasses, belt;
• Weight. 4.1 kg.

This model is one of the most popular in the market! You will learn about all the units that are included in the rating.

It is a more advanced model, characterized by higher power and multitasking. An anti.vibration system is provided that can significantly reduce the effects of the operating engine on the handle.

The new generation engine allows you to reduce fuel consumption. The cost of this model varies, but the average price is about 300 dollars.

• engine power. 1.2 l.With;
• engine volume. 27.2 cm3;
• tank volume. 0.34 l;
• engine type. two.stroke;
• The bar is straight;
• The handle is T-shaped;
• equipment. a belt, a coil with a fishing line;
• Field diameter. 2.4 mm;
• weight. 5.4 kg.

FS 130

The model belongs to professional models, so the goals set in front of it will be slightly higher. It is designed to mow coarse grass, cleaning hard shrubs and young trees.

The latest high.power engine is provided here, which does not distinguish a large number of harmful emissions.

The price for the STIHL FS 130 mower is about 400.

• engine power. 1.9 liters.With;
• engine volume. 36.3 cm3;
• tank volume. 0.53 l;
• The bar is straight;
• The handle is T-shaped;
• equipment. shoulder belt, two.blade knife;
• Field diameter. 2.4 mm;
• Weight. 5.9 kg.

The dispersion of for these models does not indicate some difference in quality, first of all, each StiHL mower is designed for a certain type of work.

It is quite clear that there is no point in acquiring a more expensive and powerful model if you have a small area or a lawn in front of the house. Simple models will perfectly cope with this task, but the word “simplicity” is not used here in a derogatory form. powerful braids are designed to process large areas with overgrown and thick surfaces, hence the difference in price. If you are confused in such a variety of tools, then do not be upset, but boldly click here and we will tell you how to choose a lawn mower for a summer residence.

Carburetor chainsaw device

Repair work was not completed without knowledge of the basics of the mechanism. Understanding the components and the principle of operation facilitates the determination of the cause of the failure.

Any malfunction in the carburetor threatens to stop the engine

The carburetor is one of the main functional parts of the engine, which serves to prepare and supply the fuel mixture, consisting of certain proportions of fuel and air. As soon as the proportions are violated. the engine begins to “junk” and even completely stops working.

You can force the carburetor to work correctly by studying its “refueling”:

• A transverse valve pipe for air flow control.
• Diffuser. narrowing to increase the air flow at fuel release.
• A sprayer from which fuel is supplied (fuel arrow in the diagram).
• Float chamber that controls the fuel level at the input to the channel.

The diagram shows the interaction of fuel and air flow.

How it works: the air flow in the diffuser spray fuel, creating a mixture that enters the cylinder. The higher the fuel consumption, the higher the engine speed. Carburetors of different models work according to one scheme.

Tips for choosing a good chainsaw for gardening here: https: // Diz-CAFE.COM/Tech/Vybor-Benzopily.HTML

When you need tuning in general?

In particular, it is necessary to adjust the carburetor carburetor in rare cases, more often with problems associated with fuel consumption or wear of parts. But sometimes “symptoms” indicate the need to regulate the mechanism. Here are some signs:

• After starting the engine, he immediately stops. Alternatively, it will not begin at all. The reason is an excess of air and a lack of fuel.
• Fuel consumption increases, and as a result a large amount of smoke gases is formed. This is due to the reverse process. oversaturation of the mixture with fuel.

The reasons for the regulation failure can be mechanical:

• Due to severe vibration, the protective cap is damaged, as a result, all three bolts lose their fixation.
• Due to wear of the engine piston. In this case, the installation of a chainsaw carburetor will help only for a while, it is better to replace a worn part.
• The clogging is caused by poor fuel, scale or damage to the filter. The carburetor requires complete disassembly, washing and adjustment.

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:

Setting a carburetor of a lawn mower with two adjusting screws

Motokosa carburetor adjustment with two screws is much easier than described in the first version. But it is worth noting that this setting is less accurate. Before starting the setup, it is necessary to remember the factory parameters of the lawn mower. After a while, the engine starts and works for several hours. Although some tools are enough 10-15 minutes of work to set the necessary parameters.

Setting a carburetor of a lawn mower with two adjusting screws

First you need to start the engine at low speeds. If the chain moves along the tire during operation, then this is not the norm. You need to adjust the screw so that the chain stops moving.

Next, you need to switch to average speeds. Then the engine can smell. The adjustment screw will also help to eliminate this trouble. Having tightened it stronger, the fuel mixture will begin to be supplied to the engine, which is less enriched. After that, the smoke will disappear. But the speed will increase. Adjustment must be done until a smooth clear work is achieved without jerking.

After all the necessary settings are carried out, it is necessary to let the trimmer work in real conditions for more than one hour. After some time, it would be nice to check whether all the components work correctly. If deviations have been found, they need to be eliminated.

An indicator that the adjustment will be successfully non.flowing fuel combustion and a slightly brownish candle color. The color of the candle with the soil is darker.

Carburetor Carburetor Setting Motokosa is a very important preventive event, which must be carried out every time when such a need occurs. As described above, such a need can arise quite often. By the way, the reason for configuration can also be the screws promoted from vibration. In order for the tool to serve for a long time, it is necessary to always follow the instructions for the operation of the lawn mower, use the correct fuel mixture.