Do-it-yourself trimmer repair Shtihl and operating instructions for FS-38 and 55 (Stihl FS), carburetor adjustment

It is natural for a person to ennoble the place in which he spends the lion's share of his time. City residents 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 houses located outside the city have completely different concerns and requirements. It is necessary to promptly mow shrubs, grass, various dead wood, and carefully monitor the condition of the plot and garden. It is clear that this requires slightly different means of achieving comfort. And here a new brainchild of engineering comes to the fore - mowers.

About the manufacturer Stihl

The history of this German brand begins in 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 small production and a narrow focus, which made it possible to focus on the quality of the products produced.

In the early 30s, the first STIHL chainsaw was released, distinguished by its convenience and functionality even in those days. The company is developing at a rapid pace, constantly introducing new tools, which gives it the opportunity to enter the international market. And already in 1931, the first regular deliveries of products to Russia were organized.

Calm device

To date, the company has expanded its activities in more than 160 countries around the world, opening new centers and production branches in Switzerland, China and many other countries. This is understandable, because the company’s assortment 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.

How to start chainsaws with a decompression valve

Before starting a Stihl chainsaw with a decompression valve installed, you must turn it on. I would like to note that the Stihl 250 saw does not have a decompression valve.

After the first flash has passed, the valve will return to normal operation; therefore, after the engine control lever is set to the open choke position and starting continues, the decompression valve must be pressed again.

The operation of the valve is shown schematically in the figure below.

In fact, the valve does not make starting faster, it just simplifies the process and makes it more comfortable, because During launch, a person will have to apply significantly less force.

How to Properly Start a Stihl 180 Chainsaw

How to start a Stihl chainsaw: start-up process and review

What remains for our client to do? Chainsaws have two-stroke engines. Their cold start is carried out using a similar method. But on the market we come across models whose pages contain additional equipment; when using it, of course, you can start the saw without making much effort. Therefore, the starting method may differ.

Features and best models

The mower deserves special mention, notable for its versatility, reliability and ease of operation. The company's specialists have developed many types of braids, with different characteristics and applications.

For example, the range of lawn mowers is designed for mowing grass over large spaces . For this purpose, a self-propelled wheeled system was developed, with the help of which it became possible to care for a large area without spending a lot of time and effort. A brush cutter is perfect for decorating shrubs, giving them some artistic image and texture. And if you need a lawn mower for tall grass and uneven areas, then follow this link and get complete information on selecting this type of equipment.

If you need a more subtle approach to grass cleaning, for example, around flower beds or between trees, then a gasoline trimmer, designed for accuracy and precision, will do the job perfectly. The company's specialists took into account all the nuances and possible difficulties when working with scythes, so they equipped them with nylon strings, which prevent mechanical damage to trees.

A special AutoCut trimmer head is also used, which ensures the normal functionality of the gas trimmer string knives. This article will tell you about the prices for gasoline manual lawn mowers and trimmers, and it will also help you make the right purchase, which you will not regret.

There are two types of these mowers: amateur and professional models, designed to solve problems of a certain complexity. The first category includes models FS 38, FS 45, FS 55, etc. The features and differences of these tools are the motor power (from 0.9 to 1.2 hp depending on the configuration) and tank volume (approximately 0. 34 l).

Professional trimmers include Stihl FS 130 and FS 250. Let's look at the characteristics and properties using the example of several mowers, in particular FS 38, FS 70 and FS 130.

Watch the features of the device in the video.

Petrol lawn mower FS 38

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

The price for the Stihl FS 38 mower is about $130.

Characteristics:

• engine power – 0.9 hp;
• engine capacity – 27.2 cm3;
• tank volume – 0.33 l;
• engine type – two-stroke;
• bar – straight;
• handle – D-shaped;
• equipment - 2-tooth grass trimmer blade, protective glasses, belt;
• weight – 4.1 kg.

Stihl FS 38

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 gas mowers here.

Price mower Shtil FS 70

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

The new generation engine reduces fuel consumption. The cost of this model varies, but the average price is about $300.

Characteristics of FS 70:

• engine power – 1.2 hp;
• engine volume – 27.2 cm3;
• tank volume – 0.34 l;
• engine type – two-stroke;
• bar – straight;
• handle – T-shaped;
• complete set - belt, reel with fishing line;
• line diameter – 2.4 mm;
• weight – 5.4 kg.

Model FS 70

FS 130

The model is a professional model, so the goals set for him will be a little higher. It is designed for mowing coarse grass, cleaning tough bushes and young trees.

It features the latest high-power engine that does not emit large amounts of harmful emissions.

The price for the Stihl FS 130 mower is about $400.

Characteristics:

• engine power – 1.9 hp;
• engine volume – 36.3 cm3;
• tank volume – 0.53 l;
• bar – straight;
• handle – T-shaped;
• equipment - shoulder strap, two-blade knife;
• line diameter – 2.4 mm;
• weight – 5.9 kg.

The range of prices for these models does not indicate any difference in quality; first of all, each Shtil mower is designed for a specific 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 front lawn. Simpler models will cope with this task perfectly, but the word “simplicity” is not used here in a derogatory manner. More powerful mowers are designed to handle larger areas with overgrown and dense surfaces, hence the price difference. If you are confused by such a variety of tools, then do not be upset, but feel free to click here and we will tell you how to choose a lawn mower for your dacha.

Characteristics of the model in the video.

However, no matter what model you choose, you must follow certain operating rules recommended by the manufacturer in order to avoid possible breakdowns.

Review

The Stihl FS38 brushcutter belongs to the light group and is the optimal complement to a powerful lawn mower for cleaning hard-to-reach areas, along paths, under trees and bushes. With the help of a STIHL mobile lawn mower, you can quickly trim soft, overgrown grass on lawns and lawns, and always keep a small area in tidy condition.

Petrol mower Stihl FS38

Recommendations for use

It is necessary to take temporary breaks from work. This is necessary to ensure that the device’s engine does not overheat and fail prematurely. For amateur models, a break is provided every 20 minutes for the same amount of time. For professional mowers, work must be interrupted every 50 minutes, in which case the downtime should be at least 10 minutes.

You need to monitor the condition of the fuel tank. If you do not plan to use the mower for a certain period of time, it is better to drain the remaining fuel from the tank compartment. This will help avoid damage to engine parts.

Terms of use

Starting the saw with decompression valve

Users sometimes ask how to start if the tool has a decompression valve. The 250 model does not have one. As soon as the first flash occurs, the valve will be in normal operation. The engine control lever will be set to the position where the choke is open. The startup will continue, but the decompression valve must be pressed again. It does not make startup quick, but it simplifies the process and makes it comfortable, because the operator will have to put in less effort during startup.

Correct starting of the stihl fs 130r lawn mower when cold

If you are not entirely sure that you know how to start a Stihl 180 chainsaw, then remember that equipment with a valve, regardless of whether it has a hot or cold engine, must be started using the valve. This will make it easier to turn the engine. This way you can extend the life of the starter and reduce the number of broken laces, because such chainsaws have a larger cylinder volume and compression.

Starting the STIHL FS 55 trimmer How to start the STIHL FS 55 trimmer How to start the FS 55 brush cutter

Problems and solutions - DIY repairs

But what to do if suddenly it was not possible to avoid a breakdown of the mechanism? We won’t go into the reasons for this, but it would be useful to consider possible problems that may arise with the mower, as well as methods for eliminating them on your own.

The engine does not start. If you encounter this problem, then you first need to assess the amount of fuel in the fuel tank; maybe there is no problem as such, but you just need to add fuel and continue working. By the way, the fuel used deserves special attention, because the service life and quality of operation of the lawn mower depend on its quality. Experts recommend AI-92 gasoline, no lower.

Stiga robotic lawn mowers are an innovation in the agricultural industry that have managed to win the hearts of many farmers and summer residents.

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

If you asked yourself the question: “How to choose a professional saw without having experience working with this tool?”, then here you go //machinspec.com/lesozagotovitelnaya/benzopila/kak-vybrat.html.

Another likely cause of unstable engine operation may be a dirty fuel filter. You should carefully inspect it and clean it if necessary. If the filter cannot be repaired yourself, you should replace it with a new one.

Do not forget about the air filter, clogging of which can also lead to failure of the tool. In order to avoid this, the part is removed and washed in water with detergents, or in gasoline if there is no access to a water supply.

Lawn mower Stihl

Then the filter must be thoroughly rinsed and dried, carefully monitoring the integrity of the structure. Before installing the part into the mower, it is necessary to lubricate it with a small amount of oil. However, if you don’t want to bother with cleaning the unit, then we suggest that you familiarize yourself with a lawn mower with a mulching function, because it will not only cut the lawn, but also prepare further fertilizer.

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 using the carburetor screw. The mower is placed 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 some fuel into the carburetor, then install all the parts in place. The engine should start.

You can pull the starter handle while closing the carburetor choke. Next, open it and pull the starter a couple more times. This is a fairly universal method, proven over the years.

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

The mower stalls immediately after starting. The main cause of this 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 by looking at the instructions, which describe the problem and solutions in detail.

Particular attention should be paid to the fuel channel; it is often the reason that the tool stalls. Check it regularly and clean it from dirt.

Characteristics of the lawnmower

Various small parts, such as a cable or fuel pickup hose, can affect the stable operation of the tool. Therefore, you need to monitor their condition, check for cracks and small punctures.

Petrol mower Shtil Fs 38 won't start

If you often encounter the need to mow grass in this area, then modern devices like trimmers or lawn mowers are used specifically for this purpose.
Among other solutions on the modern market are gas mowers, with the help of which you can, of course, maintain the surrounding area in a well-groomed condition. For one book, one of the fundamental advantages of a lawn mower is that it is not tied to a power source, following the principle of electronic units. However, such equipment can be used even on uneven areas and in inaccessible places, this should include areas under bushes.

The design of the Shtil FS 55 lawn mower is clear to you if you intend to operate the equipment, and even more so to repair it. The gasoline engine in this unit is almost the same as in the chainsaw. But the last tire is fixed to the motor gearbox with a long tubular rod. Inside there is a shaft that transmits torque from the motor to the working tool. This design is suspended on a belt that is thrown over the shoulder. This allows you to hold the tool suspended, which is important when the weight of the chainsaw is sensitive.

A handle is fixed to the rod of the unit; of course, it is used to move the end of the rod with the working equipment. The petrol mower “Stil FS 55”, a repair manual for which is presented in the text of the article, has a protective shield in the form of a casing, which prevents injuries during operation. The instrument itself is a round drum with a thick fishing line coming out of holes on both sides of it. When the drum spins, the line is pulled under the influence of centrifugal force and hits the grass, cutting it.

Petrol mower "Stil FS 55", technical properties will be presented to you below, has a fast-wearing nylon line. It is updated from time to time by unwinding the reel, which is located inside the drum.

Carburetor repair for STIHL FS55 lawn mower

The above-mentioned equipment option costs RUB 13,490. It is essentially a premium device. Thanks to its use, there is an option to care for the territory on a large suburban site. The equipment can handle young and old grass, reeds and weeds, as well as young bushes.

Buyers also like the bicycle handle, which increases ease of control. During operation, your hands will be spread wide apart, making it easier to control the unit. It is very maneuverable. Buyers like that the handle and strap can be adjusted to suit the operator's needs.

The tool has an option to easily configure for comfortable implementation. The controls are located on one handle. You won’t be reaching anywhere, everything is placed under the palm of your hand. The Shtil FS 55 petrol mower, according to consumers, is also comfortable because it has a pair of protective covers, one for the knife, and the other for the fishing line. The casing for the latter has a narrowing at the rod.

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The equipment described above must be used while wearing special clothing and using the equipment. What a man wears should not interfere with work. You should choose one that fits perfectly to the body. It is necessary to exclude wide sleeves that can get caught on bushes, wood, or moving parts of the unit.

It is important to remove ties and scarves. This also applies to jewelry. While starting the Shtil FS 55 lawn mower, you need to wear protective boots with rough soles. It is important to use a special protective helmet and glasses, which will prevent damage to your vision.

The engine is started 3 m away from its native land and not just from the place where the device is refueled. This work cannot be carried out indoors. Before you need to take a stable, reliable position. The motorized device is held very firmly at the same time. The cutting tool should not come into contact with the ground or objects, because it may spin when started.

Stihl FS 130 brush cutter does not start Diagnostics of defects, disassembly, repair

The unit is serviced by only one person; however, there should be no third parties in the area with a radius of up to 15 m. Otherwise you will always get injured due to thrown objects. Starting the engine of the Shtil FS 55 lawn mower, the properties are presented in the text of the article, should not be done manually. After releasing the gas lever, the cutting tool will move automatically over a period of time. Flammable materials should be kept away from the hot flow of gases and the surface of the hot muffler, because this may cause a fire.

The lawn mower runs on gasoline, which simply ignites. Therefore, while refueling, it is harmful to smoke nearby. Before refueling, the engine is turned off. It is not recommended to carry out such manipulations until the engine has cooled down, because the fuel may overflow and begin to pose a fire hazard.

The fuel tank lock is opened with special care, because excess pressure will cause fuel to splash. Petrol mower "Stil FS 55", the instruction manual is busy, you can study it before you start using the device, it is refueled in well-ventilated places. If fuel is spilled, the device should be immediately cleaned of it so that it does not get on clothing, otherwise the latter should be changed immediately.

Bottom line

Many may be put off by the relatively high prices of Shtil products, but if you think about it, what is more important - reliability and good results or savings that come at the expense of quality? But, if you set out to save money, then we offer you the option of a do-it-yourself lawn mower; by assembling the device with your own efforts, you will know all the nuances and structure of the tool.

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

How to start a saw after a long period of inactivity

I can’t start the chainsaw after a long period of inactivity. Such comments can be found on forums dedicated to the repair and operation of saws. Let's figure out how to start

chainsaw after a long period of inactivity.

The fact is that successful startup after downtime must be taken care of in advance and the saw properly prepared for storage. According to the manufacturer's instructions, before storing it, it is necessary to drain the fuel from the tank, then start the engine and burn out the fuel in the fuel system.

Preparation is necessary to ensure that the carburetor membranes do not stick together during storage. Performing this simple operation will allow you to successfully start the saw after long-term storage.

It is much easier to start a chainsaw six months after being idle if, immediately before starting, through the spark plug hole, add 1 - 2 ml of the fuel mixture to the cylinder. This can be done using a syringe.

Signs of imbalance

The carburetor must be debugged during the manufacture of the device. As a rule, owners learn about the need to adjust the fuel supply with their own hands only after quite serious breakdowns, during the process of correcting which the module was removed and, for example, cleaned.

Signs of a settings failure include the following:

starts, but the engine immediately stalls - since the engine can only work when a certain amount of gasoline is supplied, if the fuel is too “lean”, that is, the supply channel is blocked, the engine will stop; too much fuel consumption, a lot of exhaust gases - the result of incomplete combustion of the mixture. In this case, on the contrary, there is too much fuel and the mixture turns out to be excessively dense.

Do-it-yourself trimmer carburetor adjustment

Setting up the module is not a repair and replacement of spare parts is not required. In this case, the lawnmower carburetor repair kit will not be needed.

There are three screws for debugging:

• L – is regulated first, since it is responsible for fuel supply at low speeds;
• H – it is responsible for the supply of gasoline at high speeds, as well as fuel consumption and temperature;
• T – it is used to debug the idle speed.

There are options, as a rule, this is the carburetor of a Chinese lawn mower, when for debugging there is only one screw left on the body - for adjusting the idle speed. This does not mean that the module is configured automatically - it means that even such a type of repair as debugging will be difficult. The photo shows the adjustment of the carburetor of a Chinese lawn mower.

• The module is configured only when the engine is warm: to do this, the device is first turned on for 10 minutes. If the mowing head rotates at idle, then begin debugging immediately: turn screw T counterclockwise until rotation stops.
• The adjustment begins with screw L. The screw is turned to the right and left until a position is found at which the idle speed does not become maximum.
• Then the screw is turned ¼ turn counterclockwise. This will be his working position.
• The idle speed must be adjusted
  by turning counterclockwise to increase the speed and clockwise to decrease it. Its debugging consists in achieving a mode in which a sufficient number of revolutions are made before the mowing head begins to rotate. In this case, the engine must operate stably in different positions.
• The position of screw L is determined last - at maximum speed the trimmer
  should not operate for more than 10 seconds. The throttle opens, the screw is turned clockwise, very slowly, until a decrease in the number of revolutions is heard by ear.
• Then the screw rotates slowly counterclockwise until the motor begins to malfunction. After which the screw is turned back clockwise until the engine starts working normally again.

If there is a tanometer, and if the recommended speed values ​​are indicated in the product data sheet, the correction can be carried out more accurately, focusing not on hearing, but on the readings of the device.

The trimmer carburetor adjustment in the video was done by ear.

to the entry “Adjusting and repairing the carburetor of lawn mowers”

• Dmitry Pavlovich 07/04/2016

Please clarify. In the adjustment section, item 5, is screw L an error? Should you read screw A? Thank you.

tell me the initial position of the HL LA screws

PROMPT THE STARTING POSITION

tell me the initial position of the HL LA screws

Thank you very much for the video about the accelerator, I didn’t know that the defect is very important and creates a huge problem that almost everyone is silent about. BRAVO….

Maybe the tachometer is a speed meter, and not a tonometer, a blood pressure meter

and I have L,H,LA, is this LA instead of T?

In the video he’s kind of slow-witted, so you have to know how to chew snot.

Product benefits

You can find many similar tools on the market. But among similar equipment, the following positive features of the Stihl FS 55 trimmer should be highlighted:

• Ergonomic silver handle.
• Safe placement of controls.
• A variety of replacement tools, both included and purchased separately.
• Panoramic view of glasses.
• Freedom of hands due to the use of a shoulder strap.
• Visual control of the amount of fuel in the translucent tank is possible.
• A specialized system has been developed for economical gasoline consumption with low emissions.
• Operating the trimmer does not require any skill. The symbols on the controls are standard and are used on many equipment.
• Freedom of action due to the lack of an electric drive.

Garden shredder for grass and branches

Weakening of the motor

A clogged exhaust muffler mesh can lead to a drop in engine power. The blockage comes from soot, which is a product of burnt oil.

The mesh should be cleaned with a metal or nylon brush, or with an air stream.

Tool Hold

To properly start the chainsaw into operation, you should hold it in the correct way at the moment of starting.

The position of the saw is very important here. Holding at the moment of launch can be carried out in two ways

In the first case, the saw is placed on a flat surface, the left hand must be held straight and the tool should be held by the upper handle, the right foot should be placed on the protection for the second hand, and the tool itself should be pressed to the ground. In this position, it will be convenient to launch the tool, since your right hand is free, and the tool is fixed quite securely.

Regardless of the position in which you plan to start the saw, be sure to turn on the saw brake.

In the second option, you need to take a standing position and hold the upper handle of the instrument with your left hand, and hold the back handle between your legs. Thanks to this position, you can easily wind up a low-power tool, and it will be securely locked, thereby protecting yourself from an accident.

Design

The mower is quite simple. The main part of the unit is a two-stroke or four-stroke internal combustion engine. It is connected to the shaft using a gearbox. It directs the energy of movement to the operating link.

The hollow rack conceals the cable that connects them. In close proximity to the engine there is a starter, air filter and carburetor.

Signs of imbalance

Debugging of the carburetor is certainly done during the manufacture of the device.
Petrol mower Texas 330 carburetor adjustment. Usually, owners will find out about the need to adjust the fuel supply with their own hands only after quite severe breakdowns, during the process of correcting which the module was removed and, for example, cleaned. Signs of a failure in the settings are the following:

• it starts, but then the engine stalls - since the engine can only work when a certain amount of gasoline is supplied, if the fuel is very “poor”, in other words, the supply channel is blocked, the engine will stop;
• very high fuel consumption, a lot of exhaust gases - the result of incomplete combustion of the mixture. In this case, on the contrary, there is a lot of fuel and the mixture is extremely dense.

Removing the flywheel

The flywheel of the Shtil 180 chainsaw is twisted with great force, so to remove it you will need a head with a metal knob. The nut holding the flywheel is unscrewed with a 13mm head.

To block the crankshaft from turning, you need to unscrew the spark plug and install a piston stopper through the spark plug hole; if there is none, you can use an old cord from the starter, with knots tied to it and immersed in the cylinder through the spark plug hole.

It is strictly forbidden to keep the flywheel from turning by installing a power screwdriver or other tools between its ribs and the body; with this method of blocking from turning, the flywheel blades are not able to withstand the load and break off.

Repair of Stihl lawn mowers

fs 38 flexible shaft repair.

DIY trimmer repair Stihl FS 38

When using the Shtil

Sometimes the cutting head breaks, sometimes the cable breaks. Repair.

Once the piston in the cylinder is locked, you can unscrew the flywheel nut. The thread in the nut is normal, so you need to turn it to the left. Having loosened the nut, you do not need to remove it completely; just unscrew it until its upper edge is level with the tip of the shaft, after which a soft metal drift is installed on the nut and a sharp blow is made on it. Thus, the flywheel jumps off the shaft from a sharp impact and can be easily removed without the help of additional tools.

How to lubricate a trimmer gearbox / brush cutter gearbox / brush cutter gearbox

The trimmer gearbox needs to be lubricated at least once a year, but it is better to inspect the lubrication after every 20-25 hours of operation or when gear noise appears in the brush cutter gearbox. How to lubricate the gearbox of a lawn mower. To lubricate, you first need to clean the plug itself and the area around the plug from soil and grass residues so that they do not get inside the gearbox when filling it with lubricant. Then you need to unscrew the plug to lubricate the gearbox (for example, on an ECHO lawn mower it is a key set to “17”, on a Husqvarna it is a 6-point key on “5”, on a Chinese lawn mower it is a key on “12”). It is better to use lubricant from the same manufacturer as your trimmer, or simply from world-recognized brands such as Oleo-Mac, STIHL, Husqvarna, Oregon, LiquiMoly, Litol-24, Azmol 158, etc., as long as it is not a fake ! If the tube is new, unseal it by removing the cork with your fingers or using the back of the cap to break through the jumper in the nose of the tube. Then we place the trimmer on its left side, and with one hand rotating the knife (so that the gears spread the lubricant and the entire volume is filled), with the second hand we slowly squeeze the lubricant out of the tube through the hole into the inside of the gearbox housing until it is completely filled. Then we twist and clamp the plug of the trimmer gearbox and the plug of the tube with lubricant. If the lubricant is not in a tube (but, for example, in a jar), take a honey syringe without a needle, remove the piston, fill the syringe with lubricant (you can use your finger), and then fill the trimmer gearbox with lubricant from the syringe.

Specifications