Stihl fs 55 trimmer does not start

Adding fuel through the spark plug holes

If the trimmer engine does not have manual pumping and the device does not start, add some fuel to the engine itself through the spark plug passages. Do the following.

Check if the fuel level in the tank is sufficient to drain a small amount of it. Only 20 ml is required.
Remove the cap from the spark plug and unscrew it using a spark plug wrench.
If the spark plug on a used trimmer is dirty, wash and heat it. There should be no deposits on the spark plug electrodes. Do not damage the ceramic insulator of the center conductor. In a new trimmer, check the spark plugs for manufacturing defects.
Return the spark plug and check the spark ignition (discharge between the electrodes) when the starter operates.
Remove the spark plug again. Using a 20 or 50 cc syringe, pour 20 ml of gasoline into the spark plug hole.
Insert and fix the spark plug, setting its technological gap to no less than and no more than a millimeter.
Pump up the fuel using the pump button (or lever) - if your trimmer model has one. Press the button every 4 seconds.

Now try to start the engine. Close the air damper immediately after starting.

Source

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.

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.

Electric trimmer vibrates

Many users of mowers have noticed that after some time after the device starts operating, it begins to vibrate strongly. Some trimmers, mainly more expensive models, have an anti-vibration system in the form of shock absorbers located between the engine and the rod. But in some cases, even this cannot save you from strong vibration. The reason that strong vibration appears in the trimmer may be a small amount or complete absence of lubricant on the rigid or flexible shaft located inside the device’s rod.

Replacing the lubricant of the rigid shaft is as follows:

unscrew the gearbox located at the bottom of the rod;

after removing the gearbox, you will see the end of the shaft, which you need to pull to remove the part;

after removing the shaft, it must be generously lubricated with special grease “Shrus-4” or regular grease “Litol-24”;

Apply a small amount of lubricant to the shaft and spread it evenly along the entire length of the part, including the splines at the ends of the rod (if they are worn out, the shaft will have to be replaced);
After lubrication, insert the shaft back into the rod and put the gearbox in its original place.

Lubrication of the flexible shaft is carried out as follows:

unscrew and remove the mowing head;
remove the rod from the electric motor by unscrewing a couple of bolts;
pull out the flexible cable from the rod;
Lubricate the cable along its entire length.

This is done like this: first you need to lubricate the end of the cable, and then insert it into the rod, after which, as it moves inside the pipe, you should apply lubricant to the part and distribute it evenly over the surface. Then insert the flexible shaft rod into the electric motor and secure it.

Supply system

If the ignition system is normal in diagnostics and fails occasionally, then problems often arise with the power system of the lawnmower. Because of this, the engine does not start in most cases.

KEY-DOP

Before you get into the carburetor, which, despite such simplicity, you will like to be irrevocably damaged by a crooked master, you should start with a more detailed start-up diagnosis. Is the primer pumping gas? Didn't there exist long before the petrol mower

stalled by unstable work and failures?

Another very popular option for a brush cutter not starting is a gas tank plug. If the valve on its surface is clogged or does not work, then the pump simply does not have the right to pump fuel. The primer feeds until a vacuum builds up, but the process does not go further. So if the lawn mower starts

and immediately stalls - you must first look at the plug.

Also, gasoline and filter often affect engine starting. If the fuel is of disgusting quality, or there is an excess of oil, or the filter is clogged, then nothing is possible.

The engine starts, but when you increase the speed (press the trigger) it sputters and stalls? Mainly air difficulties. You also need to look at where it is sucking, whether the air filter is clogged, look at the gasoline hoses, whether there are any cracks, etc. Usually the carburetor breaks at the end of the process, and everything else is a matter of the suspension equipment.

If the lawn mower starts and immediately stalls, then there is an overflow. With this, the lawn mower does not start when hot, and the spark plug has a dark coating. So the carburetor is faulty, or the needle does not hold, or the metering jet is poisoning. The property bolt must be tightened, pressed with a primer - if it leaks, it means it needs to be corrected. If not, look at the needle.

It is better to get into the carburetor if you are able to purchase a new one. Despite the fact that it is simple in lawn mowers, of course the knot will be damaged forever. First, you should spray the tubes with cleaner, blow them out, and test start them. If this does not help, then you should remove the cover and inspect the dosing jet (needle), it often hangs in one position. There is a place and a torn membrane if dips occur when you press the gas.

KEY-DOP

Petrol mower

It may not start if the fuel hose is pinched or any fitting is clogged. Therefore, many problems can be solved by simple blowing and inspection.

If the lawn mower

the prerequisites and methods of elimination follow from the simplest diagnostics; according to the above annotation, of course, it is easy to find a breakdown.

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Detailed review of STIHL FS 55. Which brush cutter to buy for your home

Series of 4 videos: which brush cutter

buy for home. Let's compare the 4 most popular braids in Ukraine: 1) STIHL

FS 55 2) mechanical - settle and store gasoline for work not in metal containers and for no longer than 1 (one) month, otherwise it oxidizes and loses its properties; chemical - impurities and additives should not be present (they have different rates, degrees and temperatures of combustion). Old gasoline turns yellow or red, and the impurities have a strong smell of bitterness (for example, creosote) or acid (for example, methyl alcohol). The proportion of the fuel mixture is 1:50 (2%) or 20 ml/cm3 of oil per 1 liter of gasoline. For example, pour half a measure of gasoline into a transparent plastic bottle (1 l), then use a medical syringe (20 ml/cm3) to introduce two-stroke oil and mix, add gasoline and mix thoroughly. If the quality of gasoline is questionable or the working conditions are difficult, then the amount of oil can be increased to 22-25 ml/cm3. Shake the mixture before each filling! Store the resulting fuel for no more than two weeks! If the color of the mixture has changed (from sea green to, for example, brown), then it is not recommended to use it!

Removing the handle

Direct disassembly of the Shtil 180 begins with removing the handle, which is attached to the chainsaw body using three rubber shock absorbers. To remove it, you need to remove the plastic plugs from the internal cavity of the shock absorbers, then using a powerful screwdriver, first press out the upper shock absorber, then the one closer to the rear handle.

At the rear of the handle there is a throttle trigger, which is connected to the carburetor through a wire rod; in order to disconnect the rod from the gas trigger, you need to unscrew two screws and disassemble the handle.

When the handle remains on one shock absorber, you need to unscrew the chainsaw body from the inside of the handle and, bending it to the side, remove the body from the last rubber band.

Ignition system

First, you need to unscrew the spark plug and look for a spark.
The spark plug is inserted into the cap and placed with its skirt against the metal of the motor. If there is no spark when cranking, then first you need to try changing the spark plug. If replacing the spark plug does not help, then you should inspect the wire and switch. Breakdowns, short circuits, jammed buttons - the whole spectrum leads to loss of spark. If all this does not give anything away, then you need to look at the sparking system itself.

Practical advice for eliminating defects. From personal experience. Recommended viewing: .

The spark in the ignition system of the lawn mower comes out in the most ordinary and moronic way. No relays, distributors, electrical units for you. An ordinary magneto with a high-voltage wire. The unit is completely changed; in the process of choosing a coil on Chinese lawn mowers, there is an option to borrow a unit from chainsaws, mixers, haymowers and other generators. However, do not forget that some products are true to size; unfortunately, not all of them are defective.

Dry and wet spark plug, what does this mean and how does it affect engine starting?

Most tool owners immediately resort to checking the condition of the spark plug contacts. This is done in order to understand from the condition of the spark plug what could be the reason for the impossibility of starting the lawn mower engine. Based on the condition of the spark plug contacts, appropriate conclusions can be drawn about what may be causing the malfunction. Diagnosis of the spark plug on the trimmer is performed in the following order:

The spark plug is unscrewed, after which it is subject to inspection. The ideal condition of the electrodes is if they have a brown soot (brick color). If the spark plug is wet and has black or white carbon deposits, this indicates a corresponding malfunction
If the spark plug is wet, then there is a portion of unburnt fuel in the combustion chamber that does not need to be drained. Clean and dry the spark plug contacts, then make sure it is in good condition. To do this, connect it to the candle holder and place it on the surface of the cylinder. Turn on the ignition and pull the starter handle lightly. In this case, the spark plug should produce a high-quality and constant spark. If the spark is weak or absent at all, then the spark plug should be replaced.
The trimmer may not start due to a large gap between the spark plug contacts. The gap between the spark plug electrodes should be in the range from 0.7 to 1 mm. To set the gap, special feeler gauges are used

This is interesting!
Drying spark plug contacts by calcining them is strictly contraindicated, as this method will lead to damage to the part.
If there is a spark at the spark plug, but the trimmer does not start, then the reason lies in the supply of the fuel mixture to the combustion chamber. To make sure of this, you should do the following:

Take 20 grams of fuel into the cap of a PET bottle or into a syringe
Pour it into the combustion chamber through the spark plug hole
Screw in the spark plug
Put on the candle holder and start the engine

If the engine of the lawn mower starts after the above steps, then the cause of the malfunction should be sought directly in the fuel line and carburetor. If the engine does not start even after these steps, then you need to check the serviceability of the high-voltage wire. The high-voltage wire, like the spark plug, is a consumable item. If there is a suspicion that the trimmer armored wire is faulty, it should be replaced

If, after the above steps, you cannot start the engine of the lawn mower, then you need to take into account the following recommendations:

If there is any doubt about the serviceability of the spark plug and high-voltage wire, it is recommended to replace them immediately
Check that sparking is working properly, and if there is no spark on the new spark plug, then the breakdown is related to the ignition unit - coil failure
The ignition coil is not repaired, but replaced. If the diagnostics really indicate a malfunction of the lawn mower’s ignition coil, then it is not difficult to replace it with your own hands

https://youtube.com/watch?v=YixHJCGg9gg%3F

If there is a spark plug, and it is dry, and the trimmer does not want to start, then we move on to checking the next unit - the air and fuel filters.

This is interesting!
If the spark plug electrodes are red or pink, this indicates that the fuel used contains a large amount of additives. You should refuse such fuel by changing the gas station or brand of gasoline.

The main thing is the fuel mixture!

Often gas trimmers

do not start after they are tried to be “put into operation” after a long period of storage. Startup problems in this case are often caused by incorrect user actions.

If you encounter this particular phenomenon, then during a cool start you need to close the damper, then pump a small amount of fuel mixture into the carburetor. After disassembling and assembling the Husqvarna 142 saw, the spark on the spark plug disappeared. What to do. Then pull out the starting handle until you feel resistance, then start the trimmer with sharp and energetic movements.

Where to start diagnosing a lawn mower

If the lawn mower does not start or stalls immediately after starting, it is necessary to sequentially check all the main components and assemblies. The verification algorithm is as follows:

Fuel tank (fuel quality);
Candle and candle channel;
Air filter;
Fuel filter;
Breather;
Exhaust channel.

These nodes are most often the source of the main problems, which can be eliminated after a thorough inspection.

Checking the fuel mixture

Before starting the gasoline scythe engine, check the availability and quality of the fuel mixture. Don’t save money, don’t be greedy, and don’t be “clever” in this matter. Repairing or replacing the piston group will cost you too much (sometimes up to 70% of the cost of a new tool). The oil-fuel mixture must be prepared strictly according to the instructions. Calculate its quantity based on real needs. The excess gasoline remaining after work loses its quality over time.

We diagnose the spark plug and spark plug channel

If the quality of the fuel mixture is not in doubt, and the lawn mower stalls when starting, then the cause may be a flooded spark plug. Here, a regular spark plug wrench (surely every motorist has one) and a spare spark plug are suitable for repairs.

We unscrew the candle and wipe it;
Dry it thoroughly (do not heat it);
We drain the excess fuel in the chamber through the spark plug hole and dry it;
We clean the old candle from carbon deposits using a file or a lady’s nail file;
We set the gap with a distance of 1 mm (you can check it with any coin);
We return everything to its place and try to start the trimmer.

If the spark plug is working, the socket where it is located is completely dry, and the lawn mower does not want to start, lubricate the threaded connection with gasoline. It should be slightly moist. No matter how wonderful a spark a candle produces, there is simply nothing to light up in a dry chamber.

If the trimmer engine still does not start, a reason such as lack of spark due to poor contact between the spark plugs and the high-voltage wire should be excluded. If the connection is good, but there is still no spark, most likely your ignition unit has failed. Here you won’t be able to do without a specialist, since the part is not repaired, but sold as a single unit.

Diagnostics of lawn mower filters

Another reason why a gas scythe stalls may be the air filter. To eliminate this, try removing the filter and starting the trimmer without it. If it works out, then you will have to change the air filter to a new one, or at least blow out and thoroughly clean the old one.

A gasoline trimmer may not start due to contamination of the fuel filter. This is the next stage of our algorithm. Here we check the condition of the filter element and, if necessary, replace it with a new one. When replacing, try not to leave the suction pipe completely without a filter; this is prohibited by any operating instructions. Haste can result in repair of the engine piston group.

Breather and exhaust channel

Often, “delicate” branded models of lawn mowers do not start and stall due to contamination of the breather. The main function of this element is to equalize the pressure in the gas tank. When this unit becomes clogged, a vacuum is created in the tank, preventing the supply of fuel. The problem can be resolved by cleaning the breather. You can use a regular needle for cleaning.

The normal operation of scythes with internal combustion engines may be disrupted due to dirt getting into the exhaust channel or clogging of the muffler mesh. This problem occurs on older generation models. The issue can be resolved by traditional cleaning and removal of the anti-spark mesh.

A new chainsaw or gas trimmer (motor cutter) may not start.

Another example, when the fuel mixture is pumped over, turn the chainsaw over so that the muffler is at the bottom. The mixture may begin to drip from it. This is also the reason when the chainsaw does not start. When starting, exhaust gases are visible, but do not bleed, the saw will start after a while.

The next day, a chainsaw or brushcutter, if stored in a warm, damp place, usually starts from the working position, try it. Failed to start, then do everything according to science starting with a cold start.

Fuel filter in the tank. We need to check its functionality. But don't leave the inlet pipe without a filter.

It also makes sense to check the air filter. You need to remove the air filter and try starting it without it. If it starts, you need to either clean and rinse the old filter, or install a new one.

There are two more tips from experienced users of inexpensive brush cutters:

The brush cutter starts easier if you put it on its side with the air filter facing up so that the mixture obediently falls down into the carburetor, and you can also remove the air filter, drop 1-2 drops of the mixture into the carburetor, put the filter in place and. oh miracle. Starts up!

If it fails to start again, then you should unscrew the spark plug and dry the combustion chamber. At the same time, check the spark plug for functionality. It can fail unpredictably. One of the annoying reasons is a non-functioning spark plug.

So, the spark plug turns out to be working. What are we doing? If the warranty period has passed, you have no desire to travel far to service, then you can still take some steps to revive the tool yourself.

If there are no traces of the mixture on the spark plug, the spark plug is dry, which means the mixture is not entering the engine cylinder from the carburetor. But it’s still worth checking the spark plug’s operation once and for all. Pour a little mixture directly into the cylinder and screw on the candle. We make several attempts at establishment. There is no need to pull the winding handle as far as it will go, otherwise you will break the starter mechanism ahead of time. With a working spark plug, the engine will start, run for a bit and then stall - this is correct. This means the carburetor is not allowing the mixture to pass through.

It happens that to save money, a user buys gasoline somewhere cheaper. At such gas stations, water may get into the gasoline. This is the gasoline they sold you.

Either the gasoline or the mixture was stored for some time in a container with an open lid at high air humidity, or even a drop of water got into the mixture. One small drop of water in the carburetor is enough to disrupt its smooth operation.

If the user also tries to save on fuel additives (oil for 2-stroke engines), then the situation worsens, since such oil is less soluble in gasoline. In the carburetor, a thin film forms on the fuel filter in the carburetor. The supply of the mixture is severely limited or stopped.

The carburetor in brush cutters and chainsaws is a very delicate mechanism. It must be carefully removed from the engine and disassembled. We disassembled it in a low-dust room, blew it out, dried it, and washed the fuel filter mesh (very carefully!) if it was dirty. For gasoline vehicles with a service life of 1-2 years, this is often enough; all that remains is to assemble and start it. We start the establishment according to all the rules of science - cold start, hot start.

But here is a universal tip for starting a chainsaw or a lawn mower and even a snow blower (if the spark plug is working, a clean air and fuel filter, a fresh mixture of gasoline and oil in the appropriate proportions) - close the carburetor air damper, 2-3 movements of the starter, open the carburetor air damper (fully ), 2-3 starter movements. So repeat. After 3-5 cycles it will start to start.

What types of breakdowns occur in the Steel lawnmower?

Transmission problems due to lack of lubrication in the bearing.

In this model of a gasoline scythe, the transmission is represented by a flexible shaft, which is located in the rod, the upper clutch cup, and the bearing housing at the bottom. Let's carefully analyze all these nodes.

The bearing on the lower housing transmits rotation to the spool through a flexible shaft, starting from the bowl at the top. All this is not designed too complicated, but take care of timely maintenance.

The biggest problem is the lack of lubricant in the middle of the bearing housing, namely the bushing. The result is sad - the service life of the bearing is reduced several times. The procedure is quite simple, it is easy to do it yourself, at home.

To do this you need:

— the spool is removed from the trimmer body;

— the nut is unscrewed and the casing protecting the device is now easily removed;

— Unscrew the screws, remove the bearing located in the rod. Replace it if necessary, or coat it with lubricant;

- the grease is clogged into the hole where the bearing is attached and use a syringe. If this is difficult to do, disassemble it;

- To disassemble the bearing, the lock washer is removed. Then you disassemble the body. Lubricate the bushings with the roller, and then put everything back together. You have significantly extended the life of this bearing.

Repairing the flexible shaft, which transmits rotation to the spool from an electric motor, is, in principle, impossible. If it breaks, you only have to replace the broken part. The shank in the flexible shaft is triggered if you encounter a stump or stone while working. Once you have removed the bearing housing, remove the damaged shaft and make a replacement.

The cup in the clutch is responsible for transmitting motion to the flexible shaft from the coupling. Natural wear and tear occurs, and the seat seems to be licked off. Sometimes this can happen due to the fact that while using an electric gas scythe you came into contact with foreign objects.

To replace the clutch bowl, disassemble the entire trimmer body:

- Unscrew the three mounting screws in the starter. Now it's easy to remove the starter. Take care of the shock absorbers in the tank. They are rubber, don't lose them.

The plastic crankcase is secured with many screws. Unscrew them all. A few are different lengths, remember where they were.

The screws that secure the motor to the plastic housing also have some differences from other mounts. There is an engraving on the inside of the cap.

Next, remove the top from the crankcase and remove the terminals on the ignition module. Make a mark where the terminal sits on top of the module. This will come in handy when you put everything back together to avoid confusion.

The cylinder piston must be locked using a stopper. There is a screw in the clutch cup. Once you unscrew it, you can easily remove the bowl itself.

If damage is found, replace with a new part.

For what reason does the Shtil electric scythe not develop full power?

When using an electric trimmer, RPM problems may also occur. Here the reasons are completely different than for fuel streamers.

You can troubleshoot problems yourself

Shtil electric trimmer

The electric trimmer does not develop the required power because:

the network voltage is below the required minimum for the device by more than 10%;
there was a failure in the soft start (if such a system is available);
there is a malfunction of the brush assembly;
the motor winding was burnt;
rotating parts sometimes jam.

To adjust the voltage, you should first check its power. If it does not meet the standards, it should be increased using a stabilizer.

Repair of the soft start system is carried out only at a service center.

Note! When the brushes wear out, you simply need to replace them. When installing new ones, it is recommended to clean all surfaces with which they come into contact.

To adjust the voltage, you should first check the power.

If the motor windings burn out, you need to change the electric motor.

Jamming of rotation parts can occur for various reasons. To eliminate them, the entire drive assembly must be reviewed.

For your information! The last problem may also arise with another unit from this company - the Shtil pruning shears, and sharpening the disc with scissors will be the solution.

Peculiarities

When discussing the design features and performance qualities of products from a world-famous manufacturer, special attention should be paid to its main competitive advantages. The advantages of Stihl petrol grass trimmers, compared to electric models, include:

dependence of the device’s performance solely on the availability and quantity of fuel;
relatively light weight of the braid;
maximum simplicity of design and operation;
adaptation of the power plant for mowing, including dense thickets;
efficiency;
maneuverability and functionality.

Principle of operation

Carburetor

– a power system module in which liquid fuel and air are mixed before being supplied to the engine cylinders.
Gasoline lawnmower adjustment
. Depending on the tool and its operating mode, mixing and feeding are adjusted accordingly.

The design of a lawn mower carburetor is the same in almost all cases. Adjusting the carburetor of a Chinese brush cutter. It belongs to the category of float devices. The latter provide constant characteristics of the finished mixtures.

The mechanism of operation of the module is as follows.

Air enters the body of the tube with an air damper. Lawn mower matrix carburetor adjustment. The latter increases or decreases the air flow depending on its own position.
In the area where the hole for supplying gasoline is formed, the tube has a narrowing - a diffuser. Here the flow speed increases.
Fuel is supplied from the float chamber through a nozzle into the tube. The float level determines the volume of fuel supplied. Because the pressure in the chamber is normal, but in the tube it is low due to the greater rarefaction of the air, gasoline is sucked in through the nozzle.
The accelerated air flow picks up the fuel and atomizes it, forming an air-fuel mixture of suitable density.
The mixture is sucked into the cylinder through a pipeline.

The more open the air damper in the tube, the higher the air flow density, which means more fuel enters the cylinder. Stiga brush cutter adjustable handle. Setting up the carburetor of a lawn mower comes down to setting the valve ratio at which the density of the fuel consistency becomes good.

Why does the chainsaw stall?

If the chainsaw starts and stalls, the reasons may be different. An external inspection should be carried out before attempting to repair the instrument.

If the saw stalls during operation, you should check the presence of a mixture of oil and gasoline in the tank. If the fuel mixture runs out, the device will not work. In situations where there is still gasoline left, you should evaluate the quality of the tool before turning it off. The appearance of extraneous sounds and the subsequent sudden stop should alert you.

The formation of carbon deposits on the electrodes can also cause difficulties in the operation of the tool. You should carefully inspect the device and clean it if necessary.

When you press the gas

In cases where the chainsaw stalls when you press the gas, you should check the muffler and fuel filter. A possible cause of the problem is a leak in the fuel hoses. In some cases, adding speed helps.

Sometimes checking all the details does not give results, the tool suffocates, chokes when gas is added. If the device stalls when a person presses the gas, it is possible that the fuel supply is insufficient for normal operation. This phenomenon occurs due to a clogged carburetor or filter.

Damage can also occur due to the air filter becoming clogged with dust. When you give gas, the device stops working. You should not fix the problem yourself, since each model has individual characteristics.

The problem may be caused by insufficient or lack of lubrication on the chainsaw chain. If the chain is dry, you should clean the channels through which oil is supplied to the device bus. If the oil leaks, there are cracks and defects in the pipes, they need to be treated with sealant.

Under load

In situations where the device stalls under load, the problem may be with the gas tank or filters. Check the fuel quality and change the filter.

Often the saw does not gain speed due to the fact that the mixture poured into the gas tank has a low octane number. There is not enough power, sufficient heating is not possible, the chainsaw stalls under load.

Often, malfunctions of components lead to the device stalling under load. Hoses, seals, and gaskets should be checked for leaks. If parts are faulty, you can try to repair or replace them.

In cases where the chainsaw starts and immediately stalls, there is not enough fuel, the device does not heat up. The device must be recharged

It is important to use the correct mixture. Different types of fuel are better suited for different models. It is necessary to read the instructions, recommendations, reviews of people for whom the device works normally

It is necessary to read the instructions, recommendations, reviews of people for whom the device works normally.

Idling

In situations where the chainsaw stalls at idle, you need to inspect the condition of the muffler. If the part is dirty, exhaust gases are poorly removed, the engine cannot continue to work and stops.

The saw stalls at idle and in cases where the carburetor is not configured correctly. For beginners, it is better to entrust the repair to specialists, since there is a possibility of incorrect settings, due to which the tool will not be able to work. A tachometer is required to adjust the carburetor.

At high speeds

If the device stalls at high speeds, pay attention to the condition of the gasoline and air filters, the serviceability of the fuel hoses

A dirty air filter can be washed under warm running water.

It is important to thoroughly dry the part before installing it so that water does not damage the serviceability of the tool.

If fluid stops flowing through the fuel hose, it is clogged. You can clean the part or replace it with a new one.

In cases where the saw stalls at high speeds, but the liquid completely flows through the hose, and the air filter is clean and in good working order, look for the cause of the breakdown in the fuel filter. Replace it with a new one or clean it.

In some cases, the problem is hidden in the gasoline pump. When a component wears out, fuel begins to leak through the walls. If this phenomenon is observed, a new pump should be installed.

When tilted

If the saw does not develop speed when tilting, turns off, or stops working, you need to check the fuel level in the tank. If it is not too high, the device in an inclined position is not supplied with sufficient fuel, since the fuel pipe is above the mixture level.

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.

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.

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.

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.

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.

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.

What to do if the engine does not start?

If you cannot start the lawn mower, then the first thing you need to do is check the presence of fuel in the tank and its quality. To refuel the tool, it is recommended to use high-quality gasoline purchased at gas stations, the grade of which must be at least AI-92. Saving on cheap fuel can lead to breakdown of the cylinder-piston group, the repair of which can cost a third of the cost of the brush cutter itself.

It is equally important to properly prepare the fuel mixture of gasoline and oil. The proportional ratio of these mixture components is indicated by the manufacturer in the manual. You should not prepare the fuel mixture in large volumes, as its properties are lost during long-term storage.

It is better to use freshly prepared mixture

You should not prepare the fuel mixture in large volumes, as its properties are lost during long-term storage. It is better to use a freshly prepared mixture.

When preparing the fuel mixture, pour oil into gasoline using a medical syringe, which allows you to accurately maintain the required proportion of components.

A dirty fuel filter in the tank can also interfere with the operation of the trimmer's engine. Therefore, if you have problems starting the engine, check the condition of the filter. If necessary, replace the filter. Do not leave the inlet pipe without a fuel filter.

The air filter also needs checking. If the part becomes dirty, it is removed, washed in field conditions in gasoline and put back in place. At the dacha or at home, the filter can be washed in water using detergents. After this, the filter is rinsed, wrung out and dried. The dried filter is moistened with a small amount of oil used to prepare the fuel mixture. Excess oil is removed by squeezing the filter with your hands. The part is then installed in place. The removed cover is put back and secured with screws.

The air filter, washed in the fuel mixture, wrung out and dried, is installed in place in a plastic case and closed with a lid.

You can see how this procedure is done in more detail in the video:

If all of the above procedures have been carried out, but the engine does not start, then adjust its idle speed by tightening the carburetor screw

The video posted at the beginning of the article pays attention to this issue.

So, in order:

Place the tool on its side so that the air filter is at the top. With this arrangement of the chainsaw, the fuel mixture reaches exactly the bottom of the carburetor. The engine will start on the first try if you remove the air filter before starting and pour a few drops of the mixture into the carburetor, then install the dismantled parts in place. The method has been tested in practice.
If the first tip does not work, then most likely the problem is in the spark plug. In this case, unscrew the spark plug and check its functionality, and also dry the combustion chamber. Replace a spark plug that shows no signs of life with a new one.
If the spark plug is in good condition, the filters are clean and the fuel mixture is fresh, then you can use the universal method of starting the engine. Close the carburetor choke and pull the starter handle once. Then open the throttle and pull the starter 2-3 more times. Repeat the procedure three to five times. The engine will definitely start.

Some people pull the handle so hard that they have to repair the lawnmower starter with their own hands. This is only possible if the cable breaks or the cable handle breaks. In other cases, it is recommended to replace the starter. This unit is sold assembled.

Other tool malfunctions

If all the problems described above have been checked and corrected, and the trimmer still does not start, there is probably a problem with the engine itself. Compression may be reduced due to destruction of the crankshaft seals or damage to the piston group.

This often happens with trimmers that are used very actively or for a long time: for example, in public utilities. For diagnostics, use a compression meter.

The oil seal protruding from the crankcase body must be replaced - it has already hardened too much, has lost its elasticity and cannot fully perform its function

In most cases, such repairs should be entrusted to a workshop, if only because in almost all trimmers, in order to access the oil seals and the cylinder, you need to unscrew the nuts with a thread lock. This can be done either with an electric impact wrench or by warming them up thoroughly.

The oil seals are located on both sides of the crankshaft: under the starter and on the drive, and it is better to change them in pairs. Having reached the place where they are installed, assess the condition by eye: they should fit tightly, without play, and not bulge or be cracked. Oil leaks around also indicate the need to replace the seals.

When reassembling, be sure to use thread lockers wherever they were - this is a safety issue.

To easily remove the seal, screw 2 screws into it from opposite sides. Pull the screws one at a time using pliers.

Restoring the piston group requires specialized tools. If you are not an auto mechanic at a service station, entrust the restoration of the trimmer motor to a specialist.

When opening the cylinder, check all surfaces for chips, burrs, and scratches. To determine whether the piston rings are worn, rock the connecting rod. The slightest play in the piston indicates the need to replace the rings.

Carburetor Troubleshooting

Carburetor problems, as a rule, consist of clogged jets and other elements. To repair, you need to disassemble the unit and clean it. The carburetor may need additional adjustment.

You can clean the jets and fuel channels using a pump or compressor. For adjustment, 3 screws are usually used:

maximum speed (H);
minimum speed (L);
idle speed (LA).

We recommend reading:

Gasoline trimmer: tips for choosing, review of the best models, types and applications of trimmers (120 photos)
Cultivator for a summer residence - tips on choosing the best models and features of their use (115 photos + video)
The best garden shredders: TOP 3 best models and brands of 2020 (95 photos and videos)

The repair instructions are as follows:

Fully tighten screws H and L.
Unscrew screws H and L 1 turn, accuracy plays a significant role.
Start the trimmer and leave it running for 10 minutes to warm up the engine.
When the engine warms up, turn the gas to full.
Release the throttle and set idle speed (LA). Tighten the screw after the tool begins to rotate until it stops.

Petrol mower STIHL fs56 and fsa FS56 set

Among the lightweight models of gasoline trimmers, the STIHL FS56 walk-behind trimmer is distinguished by an ergonomic two-handed handle. The power of the unit is 1.1 hp, which allows for high-quality mowing of grass in medium-sized areas, destruction of weeds and compacted vegetation. The model belongs to the group of STIHL gas trimmers for household use.

The STIHL line of brush cutters includes the STIHL FSA 56 set cordless scythe with a battery engine. This model is equipped with an AutoCut 2-2 mowing head, can work for 40 minutes without recharging, providing a mowing diameter of 28 cm. Unlike gas mowers, the STIHL FSA 56 cordless lawn mower is much cheaper.

Caliber Company – founding and popularization of the brand

The Russian enterprise JSC Kalibr was founded in 1932 in Moscow. From the very beginning of its appearance on the market, the company aimed at producing high-quality and inexpensive household and industrial equipment. During the war years, the company's plant provided production services: tool sharpening, as well as turning, milling and heat treatment of parts for Soviet weapons.

Today, the Russian company’s assortment includes electric and gasoline equipment for home and garden, as well as machines for use in production. Gasoline and electric trimmers are very popular among the products of the Russian brand. They are distinguished by their high reliability, modest fuel and electricity consumption, as well as stability during operation in difficult conditions.

Another important advantage is the low prices for the brand’s garden equipment. The company’s correct pricing policy makes it possible for almost anyone to purchase its products.