Petrolcutters, like all petrol powered tools for the garden, are not difficult to maintain. It is possible and necessary to repair, configure yourself. For example, adjusting the carburetor of a petrol cutter with your own hands is a matter of five minutes.
In this process, the main thing is the correct proportion of fuel and air, for which the carburetor is regulated.
Mesh filter. There are often only two problems with this element:
In order to find out the cause of the breakdown, the fuel filter cap is unscrewed to remove the strainer. If dirt simply accumulates on it, then flushing in gasoline or blowing will help.
If there is visible damage to the mesh filter, it is imperative to install a new one. There may also be damage to the fuel supply pipe (during repair, they practice checking this element).
The carburetor starter in most cases does not function due to blockages. Use acetone or the same gasoline for flushing.
Blowing compressed air into clogged carburetor parts is an acceptable and convenient repair practice.
The throttle body, the places where the carburetor parts are bundled, the inlet or outlet pipeline - all of these parts are susceptible to depressurization. You can check for sure in a primitive way - smear the problem area with soapy foam.
The basis of the carburetor of the petrol cutter is an aluminum case. It contains a diffuser (hole with inner contours). Air is blown through this hole. The flow rate of oxygen (air) depends on the cross-section (orifice) of the diffuser.
The diffuser is equipped with fuel channels. From them, fuel is drawn in by means of an air stream.
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The throttle valve determines the amount of air to be supplied, and the engine power directly depends on this.
Video (click to play).
Fuel is sucked into the carburetor system by a pump (its membrane). Then it passes through the choke in the carburetor. The fluid then flows through the pump inlet and outlet valves. Filtered by the grid. It moves through the needle valve into the diaphragm chamber.
Phased operation of the device:
Air supply to a tube with an air baffle (damper). The baffle regulates the intensity of the air flow.
The fuel supply system is necessarily narrowed by a diffuser to increase the flow rate.
Gasoline through the float chamber and the nozzle tube with a constriction. A float chamber adjusts the temporary volume of gasoline. In the float chamber, the pressure level is neutral, and in the tube with a constriction it is already low. Due to the differential pressure, the fuel penetrates through the nozzle.
The acceleration of the air flow facilitates the transfer of fuel (gasoline) and its atomization. As a result, an air-fuel mixture of the required proportion or density is formed.
The air / fuel mixture enters the engine cylinder through the fuel pipe.
The level of air density in the system depends on the area of the open air damper. The wider the throttle is open, the greater the fuel consumption and power.
Simply put, adjusting the carburetor on a petrol cutter is the creation of an optimal fuel mixture due to the correct air supply.
Further customization carburetor petrol cutters do it yourself with adjusting screws. There are three of them:
Right (L) - adjustment of the fuel mixture for low rpm.
You need to find the maximum idle speed. To do this, slowly unscrew the screw (L) left and right.
To adjust, turn the screw a quarter of a turn always counterclockwise.
Lower (T) - is responsible for adjusting the engine at idle speed.
clockwise - increase;
counterclockwise - decrease.
For the correct adjustment of the idle speed, it is characteristic:
stable operation of a cold engine;
not overestimated speed of a hot engine;
a large reserve of turns for the trimmer head;
stable operation of the engine when changing position (sharp lifting or lowering of the knife).
Left (H) - regulation of the mixture at high speeds. (The screw is adjusted last).
The left screw (H) determines the general adjustment of maximum speed, engine power, temperature and gasoline consumption.
Setting up the carburetor of the brushcutter with the last screw is done as follows:
Open the throttle to full, while at the same time give full throttle. Turn the screw clockwise until the revolutions drop (in this case, orientate by ear).
Turn the screw counterclockwise as slowly as possible until the engine runs unevenly.
Then turn back quite a bit, barely hearing a stable, even operation.
For a more visual use of skills, it is more convenient to consider the work of an experienced user:
Interestingly, from the point of view of the author of the video, the setting (its correctness) is determined by the color of the candle, and not only by the speed and stability of the engine.
do it yourself in this case - combustion of the fuel mixture without residue, the color of the candle should be light brown.
Modern technologies and equipment make it possible to produce the best and optimal technical solutions that become effective assistants in the arrangement of a summer cottage or a personal plot. The green lawn and other plantings can grow rapidly, a petrol cutter is used to tidy up the local area and mow the lawns, which is also called a brushcutter or trimmer, a petrol mower.
Traditional braids are inconvenient and unsafe to use, require a significant investment of time and effort, which will help save gas mowers, combining functionality and practicality in their design. In the photo of the petrol brush, you can see various high-tech devices, which are inherent in a set of operational characteristics, including such parameters as increased productivity and a long service life.
A convenient and reliable trimmer is a technical device consisting of individual mechanisms, parts and elements that can wear out, become unusable and damaged during intensive use.
Even with regular technical inspection, maintenance procedures and careful storage, such devices and their individual parts require repair and even replacement, all repair procedures can be performed independently.
Brief content of the article:
The easiest way is to give the petrol cutter for repairs, having allocated a certain amount of funds from the family budget, prompt and high-quality repair with your own hands is no less simple and convenient if you want to understand the design of the petrol cutter and fix all the problems.
The mass and piece production of trimmers is based on the use of generally accepted technology, a typical design scheme consists of certain elements and parts, it is important to know them when carrying out independent repair work:
top part. The basis of the entire structure, where all important elements are collected, such as a starter, a carburetor and a petrol cutter engine;
middle part. A hollow rod, inside it is a cable that connects the motor and the gearbox, which drives the cutting line. In this part there are fasteners for distributing the weight of the entire structure and a belt for fixing the trimmer on the belt of a person using the trimmer for its intended purpose;
Bottom part. It houses the gearbox and cutting elements, which are hidden under a practical cover to protect the user. The casing provides an increased level of safety, preventing large fractions of debris, stones and glass from entering a person while working with a petrol cutter.
Knowing exactly the internal structure and the principle of operation of the trimmer, you can independently carry out repair measures for the structure or replace individual components that have become unusable, using the repair instructions.
The most common and common failures of the unit that need to be corrected on their own include the following problems:
engine malfunction, due to which the brushcutter does not start and does not work;
increased vibration of the brushcutter bar, which complicates its intended use;
increased overheating of the gearbox, its accelerated heating during operation;
slow and weak functioning of the cutting line at insufficient speed;
clogging of the starter grille, causing overheating of the engine and its refusal to work;
fast and frequent clogging of the carburetor due to the use of low-quality fuel;
clogging of the air filter due to non-observance of the measures for the care of the device.
All these problems can lead to the fact that the device will lose its working capacity. Before ordering the necessary spare parts for the mowing, a visual inspection and diagnostics of the device should be carried out.
Particular attention should be paid to individual spare parts and units of the device, to check them you do not have to contact a professional master, a set of diagnostic measures will help you to identify the consequence of a loss of performance with your own hands.
If the trimmer motor does not start or stalls immediately after starting, when the gearbox overheats or during the operation of the device, extraneous noises are heard and vibration is clearly felt, it is important to visually inspect and identify a non-working unit.
To optimize the preparatory measures before repairs, you should carry out a simple diagnosis and check step by step:
the presence of fuel in the tank and lubrication in the main units;
serviceability of the spark plug and its performance;
the cleanliness of the fuel and air filter of the brushcutter;
clogging of the outlet channel and breather of the device;
the quality of the fuels and lubricants used.
To determine the functional efficiency of the petrol-cutter's ignition, it is necessary to determine whether the spark plug is working by testing the appearance of a spark when it comes into contact with the body of the functional device.
The spark plug itself can be replaced with a new one, having previously dried the candle channel, if necessary, the old element is also dried, cleaned with special devices and returned to its place.
In the process of inspecting the carburetor, it is worth paying attention to the possible leakage of the fuel used; to identify problems with the carburetor, the following measures must be taken:
purging the fuel hose to eliminate possible blockage of the element;
checking and replacing the gasket between the engine and the carburetor;
determination of tightness and maintenance of constant pressure in the unit.
If necessary, you can personally disassemble and thoroughly clean the unit using gasoline, the jet and channels are cleaned using compressed air.
The gearbox transmits torque from the motor shaft to the cutting tool, its gears during operation must be absolutely clean and always lubricated with special grease.
Carrying out a technical inspection on your own once a season will allow you to get rid of the need to repair the gearbox or replace it, with the purchase of an expensive new unit.
The starter is necessary to bring the trimmer into working condition, its diagnostics consists in checking the tension of the starter cord connected to the teeth of the starter coil, which are often destroyed during an abrupt start.
An inoperative starter in a petrol cutter cannot be repaired; it must be replaced with a working unit as part of a mandatory technical inspection or a set of repair measures.
Cutting elements require special attention and care, which must always be cleaned of dirt and cut grass after use. Regular inspection and thorough preparation of the device for operation will help to avoid costly and time-consuming repairs, and always be confident in the performance of the petrol brush.
On trimmers, in addition to electric motors, gasoline internal combustion engines are installed. This mechanism requires special attention to itself, because if it is incorrectly configured, it will either refuse to work, or it will work intermittently and loss of power. Basically, engine tuning is about adjusting the fuel supply, and this is done with the help of the carburetor trimmer.
It is almost impossible to cover all types of carburetors produced by manufacturers of gas trimmers. But, since the design of this module, as well as its principle of operation, is largely similar between different models, a generalized description of the processes occurring in the carburetor can be made. This information will allow the user to understand the principles of operation of the device, to eliminate the malfunctions that have arisen and to operate it correctly.
The carburetor trimmer is based on one-piece aluminum body ... Below is a diagram of this block.
At the bottom of it, there is a diffuser, which is also called Venturi nozzle (eighteen). Air is drawn in by the motor through this nozzle.
The smaller this hole, the faster the air flows, and the higher the level of its vacuum in the zone with the smallest diameter.
At the top of the diffuser are fuel channels (11.12). Through these channels, the air flow draws in gasoline. The fuel pump itself, jets and the system used to regulate the supply of the fuel-air mixture can be built-in or installed externally.
Throttle valve (9) adjusts the amount of air sucked into the carburetor. Its amount affects the power that the engine develops. The damper (7) is used for cold starting. It must be closed if you are going to start the unit. After the engine has started, it must be opened, otherwise, the engine will immediately stall.
Impulse channel (1) connects the impulse chamber of the pump to the crankcase of the engine, namely, to its internal volume. The piston located in the cylinder, making reciprocating movements, successively changes the pressure in the crankcase (vacuum or pressure increase). The pressure drops force the diaphragm (4) to move. Therefore, the operation of the pump is synchronized with the operation of the engine.
The suction of gasoline from the tank occurs precisely with the participation membranes (4). Gasoline enters the carburetor through the union (2). Further, its path lies through the inlet valve (3), the outlet valve (5), through the mesh filter (6), the fuel channel (10), passes the needle (14) and fills the chamber (16), which has a control diaphragm (18) ...
The valve (14) is connected to the diaphragm (18) by means of a lever (17). The cavity, which is located below the membrane, is connected to atmospheric air through the hole (19).
The device operates as follows.
A vacuum is generated in the diffuser during the suction stroke. This fact causes air leaks. The position of the throttle valve (9) determines the amount of air entering the carburetor chamber, as well as the engine power and the number of revolutions.
At this time, fuel is sucked in from the chamber (16) through the jets (11,12), after which it is mixed with the flowing air. Gasoline, mixing with air, begins to spray. Thus, a air-fuel mixture .
The finished mixture enters the cylinder, where it is compressed by the rising piston and ignited at its highest point from the spark generated by the spark plugs.
Since the volume under the control diaphragm (18) is connected to atmospheric air through the channel (19), the diaphragm goes up, opening the valve (14) by means of the lever (17). After opening the valve (14), a new portion of fuel enters the chamber (16).
After the chamber (16) is full, the diaphragm (18) returns to its original position and the valve (14) closes.
Further, when the motor is running, all the above processes are repeated. A screw (13) is used to adjust the amount of fuel entering the diffuser through the nozzles. The screw (15) is also used to adjust the idle speed. When the regulators are twisted, the fuel mixture is enriched, and when the regulators are twisted, the mixture becomes lean. Also, in some models of carburetors, you can adjust the idle speed of the engine. quantity regulator ... It is usually located outside and, when twisted, abuts against a lever attached to the throttle shaft.
Thus, using 3 adjusting screws, you can achieve maximum engine performance, as well as adjust its smooth operation at any ambient temperature, and even in mountainous areas.
Failure of the trimmer carburetor occurs due to the use of poor quality gasoline, a damaged air filter and the accumulation of dirt in the chamber of this unit. Most often, it is quite possible to repair the carburetor with your own hands. Listed below are typical brushcutter carburetor malfunctions.
A common malfunction that "haunts" the fuel pump is deformation of the pump diaphragm ... For this reason, it does not fit properly and the pumping passages are not sealed.
The reasons for membrane deformation can be the following:
long work of the trimmer;
use of unsuitable fuel;
ingress of gases into the impulse channel.
As a result, diaphragm damage reduces pump performance and, as a result:
depletion of the combustible mixture occurs;
it is difficult to start the engine;
there are interruptions in the operation of the motor;
the piston is damaged.
Also, the above-described consequences for the engine can cause clogging of the pump cavity with impulse side ... In this case, dirt enters the membrane through the impulse channel.
To clear the blockage, you will have to disassemble the carburetor and clean the membrane.
The strainer can become dirty if contaminated fuel enters through a fuel hose or a defective pickup head. In the photo below you can see what a clean filter looks like and a dirty one (parts are separated by a line).
Troubleshooting will require a thorough cleaning and rinsing of the strainer. Also recommended blow with compressed air all holes in the carburetor trimmer housing.
This failure occurs when the contact surface of the lever wears out.
The abrasion of the contact surface occurs due to the presence in gasoline abrasive particles or due to strong vibration of the motor during operation.This defect in the control lever causes problems with the intake, as well as improper idling of the engine.
The inlet needle breaks down, as a rule, due to the presence of abrasive particles in the fuel fluid.
the tightness of the inlet needle seat is disturbed;
there is a leakage of a combustible mixture;
there are malfunctions in the engine operation associated with re-enrichment of the fuel mixture.
Also, the inlet needle may just jam.
A jammed inlet needle can cause the presence of dirt in the fuel , or a long idle device without work.
If dirt accumulates in the control cavity, the inlet needle cannot close the hole tightly and a lot of fuel pours into the chamber.
It causes re-enrichment of fuel and the engine starts to malfunction. It is necessary to disassemble the carburetor and clean the cavity of the control membrane.
The membrane can undergo deformation during prolonged operation of the unit and when using aggressive fuels.
Failure of normal adjustment due to a defect leads to:
damage to the piston;
difficulties when starting up;
depletion of fuel;
improper engine operation.
This problem can occur if the adjusting arm is not properly installed or if it bends before installing. As a result, the contact surface is in the wrong position, which disrupts the additional fuel supply.
The throttle and choke valves are mainly subject to wear due to the presence of abrasive particles in the air. Defective flaps look like they have been sandblasted.
As a result of valve wear, engine performance decreases, malfunctions appear in its operation, piston rings, piston and cylinder coating wear out.
The air and throttle shaft can wear out for the following reasons:
insufficient and improper maintenance of the air filter;
the air filter is damaged;
the air filter is not suitable for this unit.
Due to hit poor quality purified air , the shaft will wear out and may break. Broken shaft parts can enter the combustion chamber or crankcase and cause serious damage to the entire piston system.
To eliminate problems with air purification, it is necessary to replace the defective filter or flush the existing (serviceable) one. The filter must be washed in soapy water and dried.
Carburetor adjustment is necessary in the following cases:
the new engine was run-in (4-5 liters of fuel mixture were used);
the composition of the fuel has changed (brand of oil and gasoline);
the weather has changed (it became hot, cold);
the rarefaction of air has changed (applies to mountainous regions);
after long-term storage;
increased load on the engine (after changing tools, etc.);
due to vibration, the adjustment screws spontaneously unscrewed;
fuel consumption has increased, the carburetor overflows fuel;
carbon deposits quickly appear on the spark plug electrodes (while the fuel mixture is prepared correctly);
the engine starts and immediately stalls or gains momentum poorly;
gasoline does not enter the cylinder;
a large amount of exhaust gases.
Before you start adjusting the carburetor trimmer, you must do the following:
flush the engine;
replace or clean the spark plug;
change to a new one or clean the air filter (it is recommended to wash it in warm, soapy water, wring it out and let it dry well).
It is also necessary set cord a suitable diameter in the trimmer coil or install knives - this is done so that during the tuning process the engine has at least some kind of load. After installing the cutting tool and starting the gasoline engine, let it warm up for 10 minutes.
If at idle motor, you notice that the cutting tool is rotating, so it is necessary to reduce the engine speed.This is done using the lower idle speed control, often marked with the letter “T”. The illustration below shows the placement of the adjusters on a Husqvarna trimmer.
But, for example, on a Stihl trimmer, this screw may be marked “LA”.
So, turn the idle speed control to the left until the trimmer head comes to a complete stop.
To adjust the carburetor, 3 regulators (screws) are used.
Right adjuster L adjusts the level of enrichment of the combustible mixture at low speeds. It needs to be regulated first. Achieve maximum idle speed. This is done with the L knob by turning it left and right. After finding the point of maximum speed, return the regulator half a turn to the left (counter-clockwise).Lower T adjuster (LA) used to adjust idle speed. Turning it to the left, the engine speed will begin to decrease, and turning the regulator to the right, the engine speed will increase.Left Knob H is responsible for enriching the combustible mixture at high speeds. The enrichment setting completes the carburetor setting. Also, using this regulator, you can adjust the maximum speed, fuel consumption and engine power.Important! If the engine is allowed to run at full speed for more than 10 seconds, it may fail.
To eliminate this nuisance, adjustment will be required. With the engine running, give full throttle, then turn the “H” regulator to the right until the speed starts to decrease. After that, the “H” regulator must be slowly scrolled to the left until you hear the uneven operation of the engine. Then you should turn the knob “H” to the right until you hear the smooth operation of the motor.
After carrying out the above steps, the carburetor setting can be considered complete. After correct adjustment, the engine should confidently pick up speed, a little quarter at maximum speed, and when idling, the cutting tool should not turn. This manual is suitable for adjusting carburettors on Huter, Patriot and other brushcutters.
There are also carburettors without screw , responsible for the enrichment of the combustible mixture at low speeds. That is, they have only 2 adjusting screws: an idle speed regulator and a fuel mixture quality regulator at high speeds. How to tune this type of carburetor can be found in this video.
VIDEO
But such an unpleasant situation may arise when the engine does not want to start at all and immediately stalls, it is not able to gain a large number of revolutions. In this case, it is necessary find the causes of the malfunction and eliminate all malfunctions .
Not all people have dealt with such equipment before, and therefore are wondering how to repair a trimmer with their own hands. In order to independently repair the petrol cutter, you should understand its structure, as well as the principle of operation.
This information is usually provided in the special instruction manual that is issued upon purchase. It is necessary to check its availability before purchasing a petrol cutter. If you have purchased an imported tool, then all the same, the instruction must be written in Russian, otherwise it is better not to buy such a device and look for one that you can understand without resorting to the help of the Internet and a translator.
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The line or knife rotates at a frequency of approximately 10,000-13,000 rpm ... There are holes in the protective housing of the gearbox into which grease is supplied with a special syringe. To make it convenient to operate the tool, it is equipped with a special belt that can be slung over the shoulder.
In order to be able to operate the device, you must buy the appropriate headset.
Line thickness from 1.6 to 3 mm , which is independently positioned in the trimmer head. During the mowing of the grass, the fishing line will be subject to a lot of wear, and therefore it is advisable to purchase it in a large roll. The replacement will be done in a rather easy way: you can wind it on a bobbin of the same diameter, or simply install a new spool, which is already sold with ready and correctly wound fishing line.
If you change it manually, then first, carefully look at how it was attached initially in order to exactly repeat the winding. In order to properly load a new thread, it is necessary to measure the set piece and fold it so that one end is 15 cm longer than the second. The loop should be wound into the slot on the spool, and then start winding the fishing line in the direction of the arrow.
Knives that installed for mowing weeds , small shrubs or tough grass. Knives have different shapes, and their number may vary depending on the purpose.
If there is a U-handle, D-handle, or T-handle, then it must have device control levers ... The cutting mechanism is protected with a special cover. It is necessary to fill the brushcutters with a mixture of oil and gasoline, it is poured into the tank. The device of semi-professional and household braids equipped with a four-stroke gasoline engine will be slightly different.
The filling scheme will also change slightly, since in the first case, oil will have to be poured into the crankcase, and gasoline - into the tank. In the second variant, gasoline and oil are mixed in the prescribed proportion and poured into the tank.
It is not worth saving and purchasing cheap fuel, as this will lead to the fact that the cylinder-piston group will fail , and you can spend much more money on repairs than on high-quality gasoline.
And also very important prepare the fuel mixture correctly and combine oil and gasoline in the right amount. The proportion should be stated in the manual. That is why it is so important that it be written in Russian, because there is a possibility that different mower models require slightly different proportions for successful operation.
It is not necessary to use the fuel mixture in large volumes, because if you store the unused volume indoors for a long time, it will lose its properties. Better to use a freshly prepared solution.
Fuel filter contamination can be a problem with engine performance. The first step is to check the filter. If necessary, replace it. The inlet pipe must never be left without a fuel filter. It's also worth checking the air filter at the same time. If it gets dirty, it must be removed, washed in gasoline and put back in place. If you are in the country or in a private house, then it will be enough to rinse it in clean water, using various detergents. Then rinse, squeeze out and let dry. The finished filter is moistened in a small amount of oil, which is used to prepare the mixture. Surplus is removed by squeezing the filter with your hands. Then the part can be put back.
If all these procedures did not help and the engine still does not start, then you can try to adjust the idle speed, for this, start tightening the carburetor screw. This is very similar to tuning a similar part on a car. If there is no experience in regulating the carburetor, then you can study the videos on the Internet, which are very understandable and accessible. There they will clearly show how you can adjust the carburetor of a petrol cutter with your own hands.
VIDEO
If the first advice did not bear fruit, then you need to unscrew the spark plugs and take a close look at them. We unscrew the candle, check it for performance, and then dry the combustion chamber. A candle that does not show signs of life must be thrown out and replaced with a new one. If everything is in order with the old one, then we put it in its place and move on to the next method.
If the spark plug is fully functional, the filter is clean, and the fuel mixture is fresh, then it is necessary to resort to a universal method of starting the petrol cutter. It is worth closing the carburetor choke and pulling the starter handle once. Then we open the damper and pull the starter about 3 more times. This procedure is repeated 3 to 5 times. The engine should start. But do not pull the handle too hard, because in this case you will also have to repair the starter of the petrol cutter. This is only needed if the cable breaks or the handle breaks. In other cases, it is recommended to replace the starter immediately. This unit is sold immediately assembled.
And there is also a very simple way to create a braid. Many people forget to press the gasoline suction after filling the fuel mixture. It is usually located near the gas tank. On a household mower, it looks like a regular ball of air, which must be pressed 5-10 times in order for the mixture from the tank to go to its intended purpose. In most cases, this option works flawlessly. You just need to help the fuel go down the canal.
VIDEO
Many people know that spark plugs should be replaced periodically, but few do it correctly and in a certain sequence. To make all the manipulations correctly, it is worth familiarizing yourself with the correct procedure.
Disconnect the high-voltage wire from the candle. We unscrew the candle using a special key. We examine the candle.
The part must be replaced if it is faulty, very dirty, or a crack is found on the case.
Checking the gap between the electrodes. Their size should be 0.6 mm.
We put a new candle and tighten with a wrench.
We carry out the installation of a high-voltage wire on the central electrode of the candle.
In this procedure no big deal , and absolutely any owner of a gasoline scythe will be able to cope with it.
VIDEO
The motor can also stall due to clogged fuel valve ... In this case, it must be cleaned, and then the problem will be eliminated.
If the scythe started up and then abruptly stalled, this means that the fuel supply to the carburetor is difficult. Necessary loosen carburetor valves , then the free approach of fuel to it will be carried out in the required amount.
If there is excessive air leakage, then the engine can also stall. Should add a little speed so that air bubbles escape from the fuel system. It is also worth checking the integrity of the fuel intake hose. If any damage is found in it, then the part must be replaced immediately.
VIDEO
Always allow the engine to cool down before cleaning. We take a brush that has a soft bristle, and we clean the entire outer surface of dirt ... We treat plastic parts with a solvent, including kerosene, and you can also use a detergent.
When the summer season ends, the petrol cutter need to prepare for canning ... To do this, drain the entire fuel mixture from the tank. The engine is started to use up fuel residues in the carburetor. We clean the tool well and send it to a dry place.
There are many companies that are engaged in the production of such equipment. These include the Husqvarna, Huter, and Calm gas mowers. There are domestic or Chinese versions of lawn mowers with different calibers, but, by and large, they are arranged similarly. It is worth figuring out why one failed, and it will be easier to fix the breakdown on the new model, and therefore the repair experience is very useful and saves money.
As you can see, it is possible to repair petrol cutters with your own hands, and for this you only need correctly establish the cause , which is not so difficult to eliminate. The service will take a lot of money for this. So many that it's easier to just buy a new brushcutter. Therefore, there is always an opportunity to understand the design and make repairs on your own.
Video (click to play).
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