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.
VIDEO
Spare parts for Chinese brushcutters Chinese brushcutters repair …
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
Breakdown detection and repair of petrol cutters
Benzokos is a more fundamental tool for those who prefer to keep their land plots in order and beauty. This type of equipment copes well with virtually all types of grass and weeds. After the introduction of this device, a piece of land overgrown with weeds will look because it befits.
But at least any tool is susceptible to incapacitation. At some point, the petrol brush also gives out various kinds of malfunctions. How to solve the arising obstacles with gasoline streamers will be discussed in this material.
It goes without saying that the more authoritative a manufacturer is, the more reliable his products are - this is the most important aspect of determining the reliability of an ordinary customer. The second aspect can be called the price, the third - the reviews of the owners who checked the operation of the tool with their practice. By the way, the highest price often does not mean the highest quality, durability and resistance to breakage. It is better to conduct a more detailed analysis of the market before taking a gas mower, and then choose the "golden mean".
Before proceeding to consider the list of common circumstances of mower breakdowns, we note that very often inexperienced owners of petrol cutters do not know, for example, what ratio of gasoline and oil should be poured into the fuel tank, which gasoline is better to add to the machine, how much oil to pour into gasoline, etc ..
Self-propelled petrol lawn mower
Some also do not know what kind of lubricant to use for the gearbox, how to sharpen a disc, or a knife, and many other aspects. As a result of these and other circumstances, unfortunately, in a large number of cases, breakdowns of various equipment occur, including trimmers and gasoline mowers. Users simply do not take proper care of the equipment.
But there are a number of the most frequent circumstances that arise as a result of the specificity of the functions performed and other external and internal reasons that lead to breakdowns:
the cutting line does not feed or breaks off very quickly. This is due to the lack of a fishing line, or the line for the brushcutter is tangled in the reel;
the engine will not start. Inexperienced users are not always able to start the unit the first time due to the disabled "Start" button. But there are other reasons: clogged air filter; the spark plug gap is not set, or it is out of service; a gasoline carburetor can often overflow the fuel mixture; the missing amount of fuel has been pumped up;
often petrol cutters do not develop speed, a prerequisite for which may be four factors: clogging of the air filter, clogging of the shaft with the cutting coil with mowed grass, improperly adjusted carburetor, bad fuel is poured into the tank;
the engine does not idle. If the engine itself is serviceable, but stalls at idle, then there may be three prerequisites: clogging of the air supply filter; carburetor not tuned; bad gasoline or oil for petrol cutters is used;
the lack of a spark is also common. Prerequisites: a bad blockage, a broken candle, out of order, or the contacts of the inlet armored wire oxidized.
Petrol lawn mower Sadko GTR 520N
Apart from the listed most discussed breakdowns of gasoline mowers and the circumstances of their occurrence, you can find a lot of other complaints and reviews about this tool on the network. But the next chapter is devoted to how to solve the problems that are indicated in the list above.
Cord breakage occurs regardless of the quality of the line in the reel. To fix this problem, it is enough to rewind the cord to the reel if it gets tangled, or wind a new one if it is missing.
VIDEO
How to Fix a Chainsaw Carburetor Chainsaw Won't Start Chainsaw carburetor repair .
VIDEO
The video shows a simple but effective carburetor adjustment petrol cutters PROVEN BY PRACTICE 100%
How to start a petrol cutter if the engine won't start? Check if the Start button is on, if the supply button has enough oil, if gasoline is poured into the tank. If the engine still does not start, flush the gas filter (sometimes it should be replaced if a large blockage is found), check the spark plug for performance, clean the air filter.
It did not help? Adjust the carburetor choke to position C, this solves the fuel overflow problem. If the engine is "stubborn", simply drain all fuel from the system and refill with new, making sure that it is of the proper quality. Doing all these processes solves the problem of starting the motor in 80-90% of cases.
Gasoline Lawn Mower Knife
If the engine refuses to idle, first of all adjust the carburetor and flush the air filter of the device - this in most cases solves the problem. If the situation repeats itself, then most likely you have poured bad fuel into the fuel tank, then drain it and fill the tank with a new one.
How to start a petrol cutter and make it work if the engine speed does not pick up and it stalls? First, check to see if the cutting shaft is clogged with grass and weed debris. If everything is in order with the shaft, wash the air filter or replace it with a new one if the first one seems too dirty to you. By the way, the air supply filter should be washed with detergent and gasoline, which makes the gasket more elastic and prevents the material from drying out.
If, after completing these procedures and pressing the starter for the petrol cutter, the petrol cutter stalls again, then the matter lies in an incorrectly adjusted carburetor device. Read the last section of this article, it explains how adjustment carburetor on a petrol cutter.
If there is no spark, put in a spare spark plug to check what exactly is the matter. When the spare candle, when setting the correct gap, also does not produce a spark, then the matter is in the equipment of the scythe. Repair of petrol cutters in case of malfunction begins with checking the wire leading to the candle.
Clean the contacts, you can also clean the contacts of all nearby wiring, make sure that all wires are intact. After completing these steps, the pressed starter button petrol cutters should cause a spark to appear on the candle. Remember that when checking for a spark, the spark plug must be in contact with a metal surface to create electrical mass. We emphasize that the reduction of speed (engine damping) is often affected by contamination of the petrol cutter gearbox.
This aspect is always needed when setting up petrol cutters. A properly tuned carburetor is the key to successful operation of brushcutter engines.
Despite the fact that the question of how to adjust the carburetor on a petrol cutter seems to be incomprehensible to beginners, but the repair of petrol cutters often ends with this procedure, since the reasons lie in incorrect adjustment, and the repair of petrol cutters and how to eliminate them in the tuning procedures. By the way, running in a petrol cutter also provides for the adjustment of the carburetor part.
To understand how to properly set up a gasoline carburetor for a brushcutter, you need to know:
The device contains three screws: right (L), bottom (T), left (H).
Right tuned carburetor works at idle evenly and without drops when the engine is cold and hot, as well as during a sharp descent or a set of revolutions. The T screw is responsible for idling.
The L screw is responsible for how much fuel mixture will enter the combustion chamber at low revs. When adjusting, the screw turns counterclockwise by a quarter of a turn.
Fuel adjustment at high revs is carried out by means of screw H. To adjust, give full throttle by opening the throttle. Turn the screw clockwise until you hear a drop in RPM. Then, turn the screw in the opposite direction so that the engine runs unevenly, then begin to slowly turn the screw clockwise again until you begin to hear the smooth and uninterrupted operation of the motor.
The correctness of the adjustment is determined even by the color of the working part of the candle. If the carburetor setting is made correctly, then the spark plug will be clean, without carbon deposits.
For a 2-stroke unit, 2-stroke engine oil must be used.
To sharpen a cutter blade or blade, know that a good blade or blade must be sharpened so that the edges are sharp without overheating the metal. Sharpened cutting element will provide easier removal of the grass surface. Also, the sharpness of the disc or knife affects the number of plants that will be removed in one grab.
Video (click to play).
In general, the maintenance of a gasoline spit provides for constant cleaning of equipment after work, checking the quality of oils and gasoline, and also correctly tuned carburetor ... Do not put dubious additives and the like into the petrol cutter.repair of the Echo petrol cutter gearbox (qualified adjustment of the petrol cutter carburetor. Regularly lubricate the gearbox and lubricate the driving elements to prevent malfunctions. It is recommended to renew the grease at least every 1000 hours of operation.
