Stihl Fs 55 Trimmer Carburetor Adjustment

Carburetor for trimmer: device, do it yourself setting

Stable and efficient operation of a household trimmer largely depends on the quality of the fuel used by its operator. The filled fuel mixture must be enriched with air. therefore, the built-in carburetor is responsible for this in the basic device of the lawn mower. This knot is one of the main elements of the streamer, so the operator must constantly monitor its serviceability and settings. Otherwise, the trimmer will lose its performance and may completely fail.

When adjusting the carburetor of the household trimmer is required?

Adjust the built-in trimmer carburetor when:

• Running in a new engine, during which 4 to 5 liters of fuel mixture were used;
• Sudden weather changes;
• Changes in air pressure. for example, when the lawnmower is often used in mountainous areas;
• Long-term simple trimmer;
• The loads on the power unit of lawn mowers are growing rapidly;
• Arbitrarily unscrewing the built-in adjusting screws of the carburetor. this becomes a prerequisite for increased vibration of the internal combustion engine;
• Changes in the quality of the components of the fuel mixture;
• Overflowing fuel with a carburetor, resulting in an increase in fuel consumption;
• The regular appearance of a thick layer of resinous deposits and carbon deposits on the surface of the electrodes of a standard trimmer spark plug;
• Starting the engine and turning it off arbitrarily or slowly accelerating;
• Lack of fuel flow into the cylinder of the power unit;
• Increase in the volume of emitted exhaust gases.

The lack of timely adjustment of the carburetor threatens a serious breakdown of the trimmer, up to the complete failure of its factory engine.

Lawn mowers carburetor device

The standard design of any gasoline trimmer necessarily includes a fuel system, the basis of which is the action of a regular carburetor. Its structure and initial principle of operation are almost the same for all lawn mowers, regardless of their design features and purpose.

The lawn mowers carburetor consists of an all-metal aluminum case, which protects the internal components of the unit from moisture, small debris and dust. In the lower part of the body there is a built-in diffuser, the second name of which is “Venturi nozzle”. The main function of this standard part is to supply air in the amount required by the fuel unit to enrich the fuel. The diffuser works according to a simple principle: the smaller its diameter becomes, the more intensively the air is sucked in. This is due to the fact that in the area of ​​the smallest diameter, the level of air vacuum becomes maximum.

The upper part of the built-in factory diffuser is pre-equipped with fuel pipes through which, under the influence of air, the fuel mixture is drawn in. The rest of the carburetor parts: standard adjusting screws and a fuel pump, can be located both inside and outside the carburetor.

The lawn mowers carburetor device includes a throttle valve, the main task of which is to regulate the volume of intake air. The larger the amount of air, the higher the rated power of the trimmer power unit. Another function of the damper is to facilitate cold starting of the engine. If this is the first time the mower is started after a long period of inactivity, the shutter must be closed. Immediately after starting the engine, the part must be opened, otherwise the internal combustion engine will stall.

The carburetor for the trimmer is equipped with an impulse channel, which connects the internal cavity of the engine crankcase with the impulse chamber of the pump. The piston located in the engine cylinder creates reciprocating movements, which leads to gradual changes in pressure inside the crankcase. At the same time, the membrane is set in motion. Thus, the action of the pump is fully synchronized with the operation of the power unit.

The diaphragm of the standard carburetor takes an active part in the suction of fuel. It enters the fuel unit through the fitting. The fuel then flows through the built-in intake and exhaust valves, then through the strainer and fuel pipe. The fuel then flows next to the needle and gradually fills the chamber equipped with the control diaphragm.

The standard carburetor trim valve is connected to the diaphragm using a lever. Below the built-in membrane there is a cavity into which air is sucked in through a special opening.

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

DIY lawn mowers carburetor adjustment

Periodic adjustment of the trimmer carburetor should be performed on a fully serviced power unit. Before starting the procedure, the operator must thoroughly rinse the internal combustion engine parts and inspect its CPG for 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 lawn mower design.

The lawn mower engine must be running under a certain load when adjusting the carburetor. It is best to install a cord of the appropriate diameter or cutting knives on the trimmer.

After installing the cutting elements, the operator should start the internal combustion engine of the trimmer 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 rotated, then it is necessary to lower the speed created by the motor. To do this, it is necessary to return the lower adjuster, often denoted with the letter “T”, to the left side, at a complete stop of the installed cutter.

Further configuration of the fuel assembly is as follows:

• The “L” regulator, located in the case, is responsible for enriching the fuel mixture with air when the engine is running at low revs. The position of this screw must be adjusted first. To do this, the operator will need to achieve maximum engine speed when idling. to do this, turn the screw “L” alternately to the right or left side. As soon as the maximum speed is reached, the screw will need to be returned 1/2 turn to the left;
• Screw “T” or “LA “is required to adjust the idle speed. While turning it to the left, the speed of the power unit will decrease, and when turning to the right, it will accordingly increase;
• The “H” regulator, provided on the left, is responsible for enriching the fuel mixture with air when the internal combustion engine trimmer is operating at high rpm. This screw is also needed to adjust the engine power and the amount of fuel consumed. Adjustment of its position is carried out by turning the screw to the right or left side to achieve the maximum permissible engine speed. After that, the screw “H” will need to be returned 1/2 turn to the left.

The alternate execution of THESE actions will allow you to correctly configure the fuel trimmer unit, without the risk of exceeding the permissible load on its main working mechanisms.

Petrol lawn mower FS 38

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

• Engine power. 0.9 HP;
• Engine displacement. 27.2 cm3;
• Tank volume. 0.33 l;
• Engine type. two-stroke;
• The bar is straight;
• Handle. D-shaped;
• Complete set. 2-toothed grass trimmer blade, protective goggles, belt;
• Weight. 4.1 kg.

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

DIY Stihl trimmer repair and operating instructions FS-38 and 55 (Stihl FS), carburetor adjustment

It is inherent in man to ennoble the place in which he spends the lion’s share of his time. Residents of cities resort to the services of designers, or they themselves try to change something in their home, buy new furniture, wallpaper, so that when they come home after a hard day, they can mentally rest and relax in a favorable environment. Residents of their own homes located within the city have completely different concerns and requirements. It is necessary to mow shrubs, grass, various dead wood in a timely manner, carefully monitor the condition of the personal plot and garden. It is clear that this requires a slightly different means of achieving comfort. And here a new brainchild of engineering comes to the fore. Stihl mowers.

In the manufacturer Stihl

The history of this German brand dates back to 1926. At the initial stages of its development, the company was engaged in the production and sale of various components for washing and steam machines. It all started, like many companies, with a small production and narrow focus, which made it possible to focus on the quality of products.

To date, the company has expanded its activities in more than 160 countries around the world, opening new centers and production offices in Switzerland, China and many other countries. This is understandable, because the range of the company is impressive: motor-drills, gasoline sprayers, mowers, gasoline trimmers, chainsaws and much more. I would like to note that Shtil chainsaws are very popular due to their functionality and reasonable price.

Stihl FS 70 mower price

It is a more advanced model with more power and more multitasking. An anti-vibration system is provided to significantly reduce the impact of a running engine on the handle.

FS 70 features:

• Engine power. 1.2 HP;
• Engine displacement. 27.2 cm3;
• Tank volume. 0.34 l;
• Engine type. two-stroke;
• The bar is straight;
• Handle. T-shaped;
• Complete set. belt, reel with fishing line;
• Line diameter. 2.4 mm;
• Weight. 5.4 kg.

Recommendations for use

It is necessary to take temporary breaks from work. This is necessary so that the engine of the device does NOT overheat and does NOT fail ahead of time. For amateur models, there is a break every 20 minutes for the same time. For professional mowers, work should be interrupted every 50 minutes, in which case the downtime should be at least 10 minutes.

FS 130

The model belongs to professional models, so the goals set for it will be slightly higher. It is designed for cutting rough grass, tough shrubs and young trees.

It provides the latest engine with high power, and not emitting a large amount of harmful emissions.

• Engine power. 1.9 HP;
• Engine volume. 36.3 cm3;
• Tank volume. 0.53 l;
• The bar is straight;
• Handle. T-shaped;
• Complete set. shoulder strap, two-blade knife;
• Line diameter. 2.4 mm;
• Weight. 5.9 kg.

The range of for these models does not mean any difference in quality, first of all, each Stihl mower is designed for a certain type of work.

It is clear that there is no point in purchasing a more expensive and powerful model if you have a small plot or lawn in front of the house. Simpler models will do just fine with this task, but the word “simplicity” it is not used here in a derogatory manner. The more powerful mowers are designed to handle large areas with overgrown and dense surfaces, hence the price difference. If you are confused in such a variety of tools, do not be upset, but feel free to click here and we will tell you how to choose a lawn mower for a summer residence.

Model characteristics on.

However, whichever model you would NOT choose, you need to follow certain operating rules Recommended by the manufacturer in order to avoid possible damage.

Features and best models

The Stihl mower, which is distinguished by its versatility, reliability and ease of use, deserves a special mention. The company’s specialists have developed many types of braids, with different characteristics and applications.

For example, the lawnmower range is designed for mowing large areas. For this, a self-propelled wheel system was developed, with the help of which it became possible to care for a large area, and not spending a lot of time and effort on it. A lawn mower is perfect for decorating shrubs, giving them a certain artistic image and texture. And if you need a lawn mower for tall grass and uneven areas, then follow this link and get full information on the selection of this type of equipment.

If you need a more subtle approach to grass trimming, for example, near flower beds or between trees, then the gasoline trimmer, designed for accuracy and precision, is perfect for this task. The company’s specialists have foreseen all the nuances and possible difficulties when working with hair, so they provided them with nylon strings, which prevent mechanical damage to trees.

A special AutoCut trimmer head is also used to ensure the normal functionality of the string knives. Trimmer. This article will tell you about the of petrol hand-held lawn mowers, trimmers, it will also help you make the right purchase, in which you will not regret.

The professional trimmers include Stihl FS 130 and FS 250.Let’s consider the characteristics and properties on the example of several mowers, in particular FS 38, FS 70 and FS 130.

See device features on.

Problems and solutions. DIY repair

But what to do if it was not possible to avoid a mechanism breakdown? We will not understand the reasons for this, but it will NOT be superfluous to consider Possible malfunctions that may arise with the mower, as well as methods of eliminating them on our own.

The engine will not start. If you are faced with this problem, then initially you need to estimate the amount of fuel in the fuel tank, there may be problems as such, but you just need to add fuel and continue working. By the way, special attention is paid to the fuel used, because the service life and quality of the lawn mowers depend on its quality. Experts recommend AI-92 gasoline, not lower.

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Asked the question: “How to Choose a Professional Dust, Not Having Experience With This Tool?”, Then you go here //machinspec.com/lesozagotovitelnaya/benzopila/kak-vybrat.html.

Another possible prerequisite for unstable engine performance is a dirty fuel filter. You should carefully examine it, clean it, if necessary. If the filter is NOT amenable to self-repair, then replace it with a new one.

Then the filter must be thoroughly rinsed and dried, carefully monitor the integrity of the structure. Before installing the part in the mower, it must be lubricated with a little oil. However, if you do NOT want to bother with cleaning the unit, then we suggest that you familiarize yourself with a lawn mower with mulching function, because She will not only cut the lawn, but also prepare further fertilization.

The spark plug can also affect engine performance. It is necessary to Unscrew it and check the condition, if necessary, replace it with a new one.

If, after all the manipulations done, the engine still does not start, then you can resort to the advice of experienced craftsmen who have used them in practice.

It is necessary to adjust the speed with the carburetor screw. Place the mower in such a way that the fuel hits the bottom of the carburetor. To do this, place the tool so that there is an air filter on top.

Next, you need to remove it and pour a little fuel into the carburetor, then set all the parts in place. The engine should start.

These tips are NOT a panacea, but they are quite effective and useful.

The mower stalls immediately after starting. The main prerequisite for such a problem is incorrect carburetor adjustment. It is quite simple to determine this problem. strong vibration will be felt when the mower is operating. You can fix the problem yourself, looked at the instructions, where the problem is described in detail and the methods of elimination.

Particular attention should be paid to the fuel channel, which is often the prerequisite that the instrument stalls. Check it regularly and clean it from dirt.

Many may be scared off by the high for Stihl products, but if you think about it, what is more important. reliability and good results or savings that are detrimental to quality? But, if you set out to save money, then we offer you the option of a lawn mower with your own hands, having assembled the device with your own efforts, you will know all the nuances and structure of the tool.

Of course, you can choose cheaper Chinese counterparts, but then no one will be able to vouch for the result of the final work and for the service life, which happens very shortly in such models. So it is more profitable to purchase a mower once from a reputable company, which of course is Stihl, and enjoy stable operation for many years of operation.

Stihl FS 70 mower price

It is a more advanced model with more power and more multitasking. An anti-vibration system is provided to significantly reduce the impact of a running engine on the handle.

FS 70 features:

• Engine power. 1.2 HP;
• Engine displacement. 27.2 cm3;
• Tank volume. 0.34 l;
• Engine type. two-stroke;
• The bar is straight;
• Handle. T-shaped;
• Complete set. belt, reel with fishing line;
• Line diameter. 2.4 mm;
• Weight. 5.4 kg.

DIY Stihl trimmer repair and operating instructions FS-38 and 55 (Stihl FS), carburetor adjustment

It is inherent in man to ennoble the place in which he spends the lion’s share of his time. Residents of cities resort to the services of designers, or they themselves try to change something in their home, buy new furniture, wallpaper, so that when they come home after a hard day, they can mentally rest and relax in a favorable environment. Residents of their own homes located within the city have completely different concerns and requirements. It is necessary to mow shrubs, grass, various dead wood in a timely manner, carefully monitor the condition of the personal plot and garden. It is clear that this requires a slightly different means of achieving comfort. And here a new brainchild of engineering comes to the fore. Stihl mowers.

FS 130

The model belongs to professional models, so the goals set for it will be slightly higher. It is designed for cutting rough grass, tough shrubs and young trees.

It provides the latest engine with high power, and not emitting a large amount of harmful emissions.

• Engine power. 1.9 HP;
• Engine volume. 36.3 cm3;
• Tank volume. 0.53 l;
• The bar is straight;
• Handle. T-shaped;
• Complete set. shoulder strap, two-blade knife;
• Line diameter. 2.4 mm;
• Weight. 5.9 kg.

The range of for these models does not mean any difference in quality, first of all, each Stihl mower is designed for a certain type of work.

It is clear that there is no point in purchasing a more expensive and powerful model if you have a small plot or lawn in front of the house. Simpler models will do just fine with this task, but the word “simplicity” it is not used here in a derogatory manner. The more powerful mowers are designed to handle large areas with overgrown and dense surfaces, hence the price difference. If you are confused in such a variety of tools, do not be upset, but feel free to click here and we will tell you how to choose a lawn mower for a summer residence.

Model characteristics on.

However, whichever model you would NOT choose, you need to follow certain operating rules Recommended by the manufacturer in order to avoid possible damage.

Recommendations for use

It is necessary to take temporary breaks from work. This is necessary so that the engine of the device does NOT overheat and does NOT fail ahead of time. For amateur models, there is a break every 20 minutes for the same time. For professional mowers, work should be interrupted every 50 minutes, in which case the downtime should be at least 10 minutes.

Petrol lawn mower FS 38

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

• Engine power. 0.9 HP;
• Engine displacement. 27.2 cm3;
• Tank volume. 0.33 l;
• Engine type. two-stroke;
• The bar is straight;
• Handle. D-shaped;
• Complete set. 2-toothed grass trimmer blade, protective goggles, belt;
• Weight. 4.1 kg.

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

Features and best models

The Stihl mower, which is distinguished by its versatility, reliability and ease of use, deserves a special mention. The company’s specialists have developed many types of braids, with different characteristics and applications.

For example, the lawnmower range is designed for mowing large areas. For this, a self-propelled wheel system was developed, with the help of which it became possible to care for a large area, and not spending a lot of time and effort on it. A lawn mower is perfect for decorating shrubs, giving them a certain artistic image and texture. And if you need a lawn mower for tall grass and uneven areas, then follow this link and get full information on the selection of this type of equipment.

If you need a more subtle approach to grass trimming, for example, near flower beds or between trees, then the gasoline trimmer, designed for accuracy and precision, is perfect for this task. The company’s specialists have foreseen all the nuances and possible difficulties when working with hair, so they provided them with nylon strings, which prevent mechanical damage to trees.

A special AutoCut trimmer head is also used to ensure the normal functionality of the string knives. Trimmer. This article will tell you about the of petrol hand-held lawn mowers, trimmers, it will also help you make the right purchase, in which you will not regret.

The professional trimmers include Stihl FS 130 and FS 250.Let’s consider the characteristics and properties on the example of several mowers, in particular FS 38, FS 70 and FS 130.

See device features on.

In the manufacturer Stihl

The history of this German brand dates back to 1926. At the initial stages of its development, the company was engaged in the production and sale of various components for washing and steam machines. It all started, like many companies, with a small production and narrow focus, which made it possible to focus on the quality of products.

To date, the company has expanded its activities in more than 160 countries around the world, opening new centers and production offices in Switzerland, China and many other countries. This is understandable, because the range of the company is impressive: motor-drills, gasoline sprayers, mowers, gasoline trimmers, chainsaws and much more. I would like to note that Shtil chainsaws are very popular due to their functionality and reasonable price.

Problems and solutions. DIY repair

But what to do if it was not possible to avoid a mechanism breakdown? We will not understand the reasons for this, but it will NOT be superfluous to consider Possible malfunctions that may arise with the mower, as well as methods of eliminating them on our own.

The engine will not start. If you are faced with this problem, then initially you need to estimate the amount of fuel in the fuel tank, there may be problems as such, but you just need to add fuel and continue working. By the way, special attention is paid to the fuel used, because the service life and quality of the lawn mowers depend on its quality. Experts recommend AI-92 gasoline, not lower.

Homemade circular sawmill. easy and simple, thanks to the detailed instructions that you will find on this site.

Asked the question: “How to Choose a Professional Dust, Not Having Experience With This Tool?”, Then you go here //machinspec.com/lesozagotovitelnaya/benzopila/kak-vybrat.html.

Another possible prerequisite for unstable engine performance is a dirty fuel filter. You should carefully examine it, clean it, if necessary. If the filter is NOT amenable to self-repair, then replace it with a new one.

Then the filter must be thoroughly rinsed and dried, carefully monitor the integrity of the structure. Before installing the part in the mower, it must be lubricated with a little oil. However, if you do NOT want to bother with cleaning the unit, then we suggest that you familiarize yourself with a lawn mower with mulching function, because She will not only cut the lawn, but also prepare further fertilization.

The spark plug can also affect engine performance. It is necessary to Unscrew it and check the condition, if necessary, replace it with a new one.

If, after all the manipulations done, the engine still does not start, then you can resort to the advice of experienced craftsmen who have used them in practice.

It is necessary to adjust the speed with the carburetor screw. Place the mower in such a way that the fuel hits the bottom of the carburetor. To do this, place the tool so that there is an air filter on top.

Next, you need to remove it and pour a little fuel into the carburetor, then set all the parts in place. The engine should start.

These tips are NOT a panacea, but they are quite effective and useful.

The mower stalls immediately after starting. The main prerequisite for such a problem is incorrect carburetor adjustment. It is quite simple to determine this problem. strong vibration will be felt when the mower is operating. You can fix the problem yourself, looked at the instructions, where the problem is described in detail and the methods of elimination.

Particular attention should be paid to the fuel channel, which is often the prerequisite that the instrument stalls. Check it regularly and clean it from dirt.

Many may be scared off by the high for Stihl products, but if you think about it, what is more important. reliability and good results or savings that are detrimental to quality? But, if you set out to save money, then we offer you the option of a lawn mower with your own hands, having assembled the device with your own efforts, you will know all the nuances and structure of the tool.

Of course, you can choose cheaper Chinese counterparts, but then no one will be able to vouch for the result of the final work and for the service life, which happens very shortly in such models. So it is more profitable to purchase a mower once from a reputable company, which of course is Stihl, and enjoy stable operation for many years of operation.