Replacing the piston on the trimmer EFKO. Possible causes of malfunctioning in electric braids

The causes of breakdowns of gasoline and electric trimmers

Trammer for grass, both electric and with an internal combustion engine (ICE), is an indispensable tool in the summer and autumn period for owners of cottages and private houses. With its help, weeds, small shrubs are easily removed and the lawn is trimmed. But, like any technique, trimmers for grass fail at the most inopportune moment. To eliminate the malfunctions with your own hands, the user of this technique first needs to determine the reason for their appearance.

In the lawn mower and an electric trimmer for grass, if you do not consider breakdowns associated with the bar and the mowing head, the malfunctions mainly happen in the engine area.

Damage of gasoline trimmers

Typical breakdowns of a gasoline trimmer for grass, which are most often faced with the owners of this unit, are as follows:

• engine breakdown;
• problems with the carburetor;
• problems with the supply of fuel;
• muffler malfunction;
• gearal breakdown;
• The starter broke;
• Air filter problems;
• Broken a buckshot on a gas tank.

Malfunctions of electric trimmers

Since the device of an electric coser is much easier than a motirmer, then there are few reasons for its failure.

It should be noted that the elimination of some of them is best entrusted to the specialist.

Basically, the trimmer for the grass ceases to work normally in the following cases:

• Electric cable malfunction;
• The control button is faulty;
• burned engine winding;
• Contact joints break on the engine.

Why is the gasoline trimmer not starting for the grass

The reasons why the gasoline trimmer for the grass stopped starting is different, therefore, a phased diagnosis of the apparatus is required.

Fuel tank (fuel quality)

Remember that always before starting the unit, a check of the presence and quality of fuel is required. In this case, you should not be greedy and save, as well as “clever” about the amount of oil added. Everything must be done according to the management attached to the apparatus, since when the piston group fails, its replacement will cost about 70% of the total cost of the trimmer for the grass. Pour fuel due to the fact that you will fully conside it when performing work. After a while, the gasoline remaining in the tank loses its properties and can harm the engine. Therefore, do not prepare the mixture for the future and in large quantities. If the lawn mower starts poorly, try to drain the “old” fuel from the tank, and season it with a freshly prepared mixture.

Important! To refuel the device with fuel, the origin of which is unknown, fraught with negative consequences. Gasoline should be of high quality, bought at a gas station, and its brand should be not lower than AI-95.

Candle and candle channel

So, you changed the fuel, but nothing has changed, and the trimmer for the grass still does not start. In this case, it is worth checking the candle channel: whether it throws it with a combustible mixture. Often users transfer the air damper to the “OFF” position when starting, and when the engine started, they do not transfer it to the “ON” position, after which it stalls. Further, an attempt to start the internal combustion engine to again leads to the fact that it floods the candle with gasoline, and the start becomes impossible. To diagnose and eliminate the possible problem in this node, do the following.

• It is necessary to unscrew the spark plug, wipe it well and dry it. When installing a candle in the ICE cylinder, it should be dry.
• Draw from the combustion chamber the fuel accumulated there. This is done through the hole from which you twisted the candle.
• In the presence of soot on the electrodes of the candle, it must be removed either with a thin file or a nail file.
• Do not forget to put the gap between its electrodes before installing the parts in place. The gap on the candle should be 1 mm. As a probe to check the gap, you can use a coin.
• Next, collect the block, read the start instructions and try to start the engine again.

If the engine does not start, then you will need to check the spark. For this:

• unscrew the candle;
• put on it a cap of a high.voltage wire;
• Touch its metal part to the cylinder body (to provide contact, you can insert a tubular key) as shown in the figure below;
• pull the launch cord so that several engine speeds occur.

Normally, with each piston roll between the electrodes, the candle should slip a spark. If there is a spark, then the reason that the internal combustion engine is not launched should be sought in other nodes of the device.

For a better understanding of the process, how to test the candle for the presence of a spark, you can use this video where the check is shown by the example of the Lawn Mushiel “Soyuz”.

If there is no spark, then in the beginning check the cable connecting the candle to the coil. perhaps the reason is in it. You can call it with a tester. In case of detection of the rupture of the chain, a high.voltage wire will require a replacement.

Also the reason that the spark has disappeared is a malfunction of the ignition coil (magneto). The figure below shows what the coil (magneto) looks like from the gasoline trimmer for Patriot grass (Patriot).

To exclude the malfunction, it will be necessary to use a tester to check the Magneto trimmer for the grass, namely, its primary and secondary winding. On the primary winding, the resistance should be in the range from 0.4 to 2.0 Ohms. If the device shows 0. this means that there is a short circuit in the winding, and if infinity is a clear sign of a chain break. The resistance on the secondary winding should be in the range from 6 to 8 kOhm.

On some coils, it can reach the value of 15 kOhm.

Air filter

If your lawn mower does not start well or stalls immediately after starting, you should pay attention to the air filter, since it can be clogged, as a result of which the air does not enter the combustion chamber, and fuel ignition does not occur. To check if the filter is the case, remove it and try to start the engine. If he earned, then the reason was found. The filter needs to be replaced or rinse well and dry before installation. In the case when you find the oil in an air filter, it must be washed with gasoline, squeezed well and dry at least 2 hours before installing in place.

If the unit does not start with an air filter, it is still recommended to check the fuel filter.

Fuel filter

This filter cleans fuel of possible pollution. If it is scored, then gasoline does not enter the cylinder, and, accordingly, the unit does not work or stalls after starting. The fuel filter is located at the end of the fence hose, which is located inside the fuel tank. To get to the filter, it is necessary to extract a cork with tubes emerging from it.

When extracting traffic jams, a fence hose can disconnect and stay in a tank. It is extracted with a tweezer.

Next, remove the old fuel filter from the hose and put on it a new, pre.acquired. You can also clean the fuel filter if you do not have new. The filter must be fixed on the hose using a spring latch.

Install the fence tube on the cork and insert the last into the tank.

Progress:

First you need to make the base of the nozzle. To do this, cut a square with a side of 100 mm from a metal plate with a corner grinder. You need to mark it in such a way that there is a hole exactly in the center (at the intersection of the diagonals). To do this, from the center of the selected opening perpendicular to the short side of the plate, we measure a distance of 50 mm and outline the spitter cutting fishing line.

Cut the excess and get a square of 100 mm x 100 mm. Now it is necessary to twist the corners a little and drill the central hole for the shaft of a trimmer for the grass.

Twist the corners and drill the central hole for the shaft of a trimmer for grass

Cut the canvases for metal, measuring from each end 8 cm. We get 4 blanks with finished holes.

This workpieces must be given the shape of the knives. To do this, we plan a fishing line for a trimmer of cut on the eye (special accuracy is not required), fasten all 4 blanks together and grind the excess.

As a result, we get the knives of the same weight and size, they can be sharpened a little on one side. Now all parts of a home.made nozzle for a trimmer for grass are prepared, you can start assembly.

We put a small puck on the screw and insert it into the corner hole. We put a knife on top, placing the sharpened side along the rotation of the shaft of the trimmer for the grass. Followed by a large puck and nut, which does not drag out, so that the knife rotates freely. We fasten the other 3 knives in the same way.

The end of the screw must be blown up so that the nut does not fly.

The nozzle is ready. It is installed by nuts to the ground and fixed in the same way as a three.lobed knife that comes with a trimmer. In a collision with a stone, the knives fold and go a little inside.

This idea was proposed by our constant author of the video Tatyana (Tula region). You can see in more detail the entire process of making such a nozzle for a trimmer for grass and find out some nuances by watching a video that she prepared.

When working with a trimmer, it is important not to forget about safety precautions using any nozzles, and especially homemade.

Where to put the piston with an arrow on 2 and 4-stroke engines | Finger displacement (disaxial) | Dnieper/Ural.

We offer to discuss this idea in the Комментарии и мнения владельцев on the publication. Share with us your thoughts, and also tell about your successful decisions.

Without accepting any of the sides of this acute (in the literal and figurative sense) discussion, let me show one of the last models of the Motokos of the German company Robert Bosch. It provides for a deviating knife and an arcuate bracket, excluding the “struck” of the knife on the objects unexpressed by the coat. I show the general view of the motorcycles and the knife itself, in two positions. General view of motorcycles

Good evening to everyone! Exactly three years as it sunk from the moment of discussing the “acute” problem for a trimmer for grass. Over the past 1000 days, a clear picture emerges: “Glory to the author is a craftsman who conducts an experiment on himself to achieve the limit of the metal from which these knives are made.

He has every right to risk his own health “. Now in stunt films you can often see Frvza. “Do not try to repeat the movie tricks that professional stunts performed.»The very first article was supposed to end with about the same phrase:

»Dear summer residents. This is my personal experiment. If you are not confident in your locksmith forces, please not repeat it. And most importantly. I do not bear responsibility for the operation of the tool performed in the wake of my article.”And the last. Do I see errors, judging by the photographs, performing this tool.

Alas, the author of this apparatus does not even suspect how the hole should be made for the shaft.

I inform you. the distance from the closest to the edge of the plate of the opening point to the edge should be no less than the diameter of the hole itself. Students of mechanics will learn this truth no later than the second year of the institute. And what do we see here? A thin isthmus reminiscent of a narrow pinch making the peninsula from the Crimea.

This is a priori, the place that is weak in this design. it experiences the same loads as other knives, and “Perekop” there is a very thin. Where it is thin, there and I want to hope, and completely sincerely that over these three years this crossbone has not undergone loads comparable to the limit of this metal, but rather an alloy from which a holey plate is stamped.

How to change a piston with a 4t scooter?

We will describe the process gradually step by step. First of all, it is necessary to relieve plastic, which prevents us from getting to the engine.

The next step is unscrewed and remove the carburetor (it does not have to disconnect all the hoses from the carburetor, and just take it aside).

We unscrew the silencer at the place of its mount with the cylinder head and at the place of mount with the engine card (2 long bolt). Now we remove the muffler.

The next step is to take the plastic lid of the cylinder head. (2 halves connected by two screws) After that we remove the lid of the cylinder head, unscrewing 4 bolt. Unscrew the chain tension controller, which is located near the carburetor.

Next, unscrew 4 nuts of the cylinder head mount, after which we can remove the cylinder head. When we removed the chain tensioning controller, we released the chain and can easily remove it (after we removed the chain from the camshaft, we must fix it, for example, with a wire so that it does not fall into the engine card)

In this photo, the head has not yet been removed, but only the camshaft is removed and the chain is fixed. The next step remove the cylinder from the hairpins. If problems arise with this, then you can slightly approached the wooden part of the hammer from all sides of the cylinder.

Put the piston in the upper dead point position (the highest position of the piston position, at the same time we focus on the marks on the generator rotor.) It is necessary to ensure that the chain does not fly away from the leading stars, so as not to bother with its installation in the opposite position. Take a clean rag and close the hole of the engine crankcase so that various garbage does not get into it. Remove the locking rings from the piston and thereby free your finger (here you can use the round.liners or small pliers.) Remove your finger with a small wooden bar (we try not to create a load on the crankshaft connector). This is where the process of removing the old CPG is completed.

Usage

If the piston is powered with a signal of red stone, then its wooden head will advance, which will try to push the blocks standing in front (if they are moved and there are no more than 12). The nomination lasts about one and a half beats of the red stone (0.15 seconds) and is accompanied by a sound heard at a distance of 15 blocks from the piston along any axis. At the same time, if there are entities in the way, then if there are no blocks in their way, they will also be moved (and if the movable block is a mucus block, the entities will be thrown back), otherwise the head or block will pass through them; In the case of an essence block, it can be strangled by a block if it is solid.

When the piston is turned off, the head will move back. over, if this is a sticky piston, then the head will try to move with him a block “glued” to it. The effect of sticking occurs only when the head is moved, so the falling blocks after moving will still fall if there is a free space under them; Also, the block, which moved by a sticky piston, can be shifted by another piston without any complications. In addition, if the adhesive piston breaks off before

how he is in timepush out block, the piston “peers” from the block, which remains in its new place. If the piston has not pushed out anything and the diet is still disconnected prematurely, then the block that was destined to pull it behind him will be shifted as usual (though a little faster).

Installation of a piston on a Chinese lawn mower

The piston head at the time of installation indicates the direction of the player who installed it.

Why are the motor details break?

Breakage can be planned and emergency. The scheduled failure depends on the manufacturer, the materials of the manufacture of the group, the intensity of operation. Usually calculate the saw resource in the motorcycles. After working out the required number of motorcycles, you should hand over the tool for repair for engine prevention.

• operation with increased loads that are incomparable with the power of the tool;
• lack of normal what leads to dry operation of the motor and increased wear;
• the use of low.quality fuel, which does not give stable engine operation;
• The great age of the saw, despite the small intensity of operation.

Each launch of the tool is a certain stress for the piston and cylinder. Therefore, the resource of the device also depends on the number of launches. If you notice extraneous sounds from the motor, reduction of power, increase in consumption, it is time to give equipment for preventive repairs to the service center.

Obtaining

The pistons can be removed by any tool (even with your hand), and in any case it will fall out as an object taken.

Piston power

Pistons can be frightened by various ways:

• If the red wire is directed directly to the piston, and directly after it it has the shape of a straight braid fishing line. The wire does not curl automatically to the piston.
• If right next to him is a block charged with a red stone (any strength) or a red torch.
• If the charged block is located diagonally above the piston, or two blocks above it. There is no physical contact with the piston, so the piston is “not guessed” that it is charged until it is updated by the neighboring block (quasi.compound phenomenon). On this principle, many block renewal sensors are built.
• Pistons are considered an unbearable (“transparent”) block, therefore it is impossible to transfer energy through them.
• The pistons cannot be charged from their head. However, if the piston is directed up and pushed the charged block there, then it is due to quasi-compound (see. above) it will be charged with them.

Piston chainsaw replacement algorithm

If it is time to replace the CPG of the chainsaws, you need to know that for each specific model there is an individual algorithm of action. To facilitate the disassembly/assembly work, it is necessary to prepare a candle key, a large flat screwdriver, a hammer, a compressor for cleaning the parts of the unit, a set of rock and end keys. Regardless of the manufacturer and the design features of the model before removing the chainsaw cylinder, the following work must be done:

• Dismantling the upper protective cover;
• Spinning candle twisting;
• Removing the side cover;
• With the help of a large flat screwdriver, stoppers from shock absorbers are removed;
• In the candle channel, place the cranberry lamp and unscrew the clutch and nut of the flywheel;
• Dismantling the leading star of the chain;
• We remove the carburetor with an air filter;
• Remove the ignition module and exhaust system.

After removal from the base of the power unit, unscrew the pallet and take out the crankshaft with a piston from the cylinder. Using a locksmith tweezer or screwdriver, dismantle the piston fingers.

Before dismantling the Piston, it is necessary to remember its location in the cylinder in order not to spend time subsequently on re.disassembling and assembly of a power unit.

Sealant for fixing the shaft of the chainsaw

Before starting the assembly, compressed air, rags and other means to clean the parts and assemblies of the unit from dirt, remains of sawdust, dust. The first stage of replacing the piston chainsaw is to install the piston on the crankshaft. We fix it on the connecting rod with a steel finger that is included. In order to prevent the arbitrary loss of locking rings, it is recommended to install them with a cut down. Next, we mount the compression rings on the piston, but due to their fragility and brittleness to this operation, you need to approach as carefully as possible. To prevent the formation of scratches before installing the piston in the cylinder, grease the piston with oil. Before installing the crankcase (pallet), it will be necessary to degrease its mounting surface and apply a layer of heat.resistant sealant. The assembly of the chainsaw is carried out in the reverse algorithm described above.

Often the replacement of the piston of the chainsaw, crankshaft and compression rings solves problems with the idle stroke and with a problematic launch of the internal combustion engine.

Common malfunctions of carburetors

Damage of the carburetor of the trimmer for grass occurs due to the use of poor quality gasoline, damaged air filter and the accumulation of dirt in the chamber of this block. Most often, it is quite possible to repair a carburetor with your own hands. Below listed typical malfunctions of the carburetor motorcosa.

Problems of the fuel pump

A common malfunction that “pursues” the fuel pump is a deformation of the pump membrane. For this reason, it does not fit properly, and the pumping canals are not compacted.

The reasons for the deformation of the membrane can be as follows:

As a result, damage to the membrane reduces the productivity of the pump, and, as a result:

• the flammable mixture is impoverished;
• The engine is difficult to launch;
• interruptions in the work of the motor appear;
• The piston is damaged.

Also, the above consequences for the engine can cause clogging of the pump cavity from the pulse side. In this case, dirt enters the membrane through the pulse channel.

To eliminate clogging, you will have to disassemble the carburetor and clean the membrane.

Clogging of the mesh filter

A mesh filter can be contaminated when contaminated fuel is received through a fuel hose or a suction head that has defects. In the photo below you can see how a clean filter and contaminated (parts are separated by a feature).

To eliminate the malfunction, thorough cleaning and flushing of the mesh filter will be required. It is also recommended to blow with compressed air all holes in the body of the carburetor trimmer for grass.

The adjusting lever is faulty

This breakdown appears when the contact surface of the lever wears out.

Washing the contact surface occurs due to the presence of abrasive particles in gasoline or due to strong vibration of the motor during operation. This defect in the adjusting lever causes problems with the inlet, as well as incorrect operation of the motor at idle.

Wear of the intake needle

The inlet needle fails, as a rule, due to the presence of abrasive particles in the fuel fluid.

• The insurance of the saddle of the intake needle is violated;
• the leakage of the combustible mixture appears;
• malfunctions in the operation of the engine associated with re.enrichment of the fuel mixture appear.

Also, the intake needle can simply jam.

Singing an intake needle can cause the presence of dirt in a combustible, or a long simple apparatus without work.

Clogging of the adjusting cavity

If dirt accumulates in the adjusting cavity, then the inlet needle cannot lock the hole tightly and a lot of fuel pours into the chamber.

This causes fuel rewriting, and the engine begins to work incorrectly. It is necessary to disassemble the carburetor and clean the cavity of the adjusting membrane.

Deformation of the adjusting membrane

The membrane may be deformed with prolonged operation of the unit and when using aggressive fuel.

The impossibility of normal adjustment due to the defect leads to:

The problem with the intake adjustment lever

This problem may occur if the adjusting lever is incorrectly, or bend it before installation. As a result, the contact surface takes the wrong position, which violates the additional fuel supply.

Damage to the damper

Throttle and air shutters basically wear out due to the presence of abrasive particles in the air. Defective shutters look as if they were subjected to sandblasting.

As a result of wear of the damper, the engine performance decreases, malfunctions appear in its operation, piston rings, piston and cylinder coating wear out.

Wear of the throttle and air damn

The shaft of air and throttle can wear out for the following reasons:

• insufficient and incorrect air filter maintenance;
• The air filter is damaged;
• The air filter is unsuitable for this device.

Due to the ingress of poorly purified air, the shaft wears out and may break. The broken parts of the shaft can fall into the combustion chamber or the engine of the engine and cause serious damage to the entire piston system.

To eliminate problems with air purification, it is necessary to replace a defective filter or rinse the existing (working). The filter must be washed in soapy water and dried.

When it is necessary to adjust

Carburetor adjustment is necessary in the following cases:

• The new engine was running out (4-5 liters of fuel mixture were used);
• The composition of the fuel has changed (brand of oil and gasoline);
• The weather changed (it became hot, cold);
• Air vacuum has changed (concerns mountainous areas);
• after long.term storage;
• the load on the engine has increased (after changing the tool and t.D.);
• Due to the vibration, the adjustment screws spontaneously unscrewed;
• Fuel consumption has increased, the carburetor shimmers the fuel;
• Flapse quickly appears on the electrodes of the candle (while the fuel mixture is prepared correctly);
• The motor starts and immediately stalls or is poorly gaining momentum;
• Gasoline does not enter the cylinder;
• A large amount of exhaust gases.

Why is the ignition adjustment

In some cases, when the engine does not start, the ignition adjustment will be required. Of course, first you need to check the serviceability of a candle and a high.voltage cable with a cap.

It is necessary to adjust the ignition on a two.stroke engine in order to ensure timely ignition of fuel in the engine combustion chamber. Below is a scheme from which you can understand the principle of operation of the internal combustion engine.

The spark in the candle should appear at the time of compression of the fuel with a piston, when it does not reach the upper dead point (VMT) at least a little. Когда поршень проходит ВМТ, происходит возгорание топливной смеси, в результате чего поршень под действием энергии взрыва уходит вниз.

Therefore, if for some reason (mainly this is due to the shift of the flywheel to the shaft relative to its original position), the fuel fire occurs earlier than the piston passes, then it returns back, and the crankshaft scrolls in the opposite direction. Such a movement can damage the starter knot, cut off the launch cord, etc.D. In this case, an early ignition of fuel occurs.

There may also be a later ignition on the trimmer: the piston after compression of the fuel, which does not ignite, goes down, and at that moment a spark appears. In this case, the engine will either not start or significantly lose power and will be poorly gaining momentum.

But such problems with early or late ignition on two.stroke ICE are quite rare, since the flywheel with magnets is already established in the correct position, which is perfectly synchronized with the movement of the piston. In addition, the flywheel is fixed on the shaft using a key and nut. Therefore, the wrong installation of the part is excluded.

Basically, the ignition adjustment is to set the correct clearance between Magneto and the flywheel.

How to check the serviceability of magneto

Magneto is the main detail in the engine ignition system and is a coil with primary and secondary windings located around the core. Often, due to the malfunction of Magneto, the spark on the spark plug disappears, and the fuel ignition does not occur. To check the coil, you will need to use the tester, and perform the following actions.

• On the tester, going into the resistance measurement mode, you need to set 200 Ohms. In this way, the primary winding will be checked.
• Connect one tester electrode to the “mass” of the coil, and the second. to the contact emerging from the magneto. Normally, resistance should be from 0.4 to 2 ohms.
• To check the secondary winding, you need to install the device switch for 20 kOhm. Further, one probe of the device is inserted into the cap of the candle, and the second is connected to the “mass”. Normally, resistance indicators should be in the range from 4-6 kOhm and above (depending on the model).

When a circuit is broken, the device will show infinity, and when close. 0 (zero).

If you do not have a tester, then you can use the following way, showing more accuracy so that the electrode does not touch the cylinder, otherwise the coil will burn out.

• Remove the cap from the candle. You do not need to twist the candle to save compression.
• You need to insert a nail without a hat into the cap. The nail should be of such a diameter to hold well in the cap.
• Tie the cap with a nail to the cylinder using the dielectric, so that the gap between the electrode and the cylinder body is in the range from 5.5 to 7 mm (but in no case touch the “mass”).
• Using the starter, make an imitation of engine starting several times. The ignition button should be enabled.
• Watch whether the spark appears and what color it has.

Normally, the spark should be strong, white or have a bluish tint. If the spark is weak, and its color is orange or yellow. this indicates a faulty magneto.

It should also be taken into account the fact that sometimes Magneto in a cold state can give a good spark. But after heating due to internal malfunctions, the current ceases to produce. As soon as the coil cools, the trimmer for the grass starts again and works for some time until Magneto heats up again. Such a reel must be replaced.

Sometimes a similar problem with heating can cause a spark plug, even if the coil is serviceable, so you need to check both parts.

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The device and principle of operation of the starter on the trimmer

The gasoline engine is, in principle, the main part of the motorcycles its power lies in the range of 0.5-2.5 liters.With. The movement from it is transmitted by the shaft located inside the hollow bar, and then through the gearbox, consisting of gears, already a fishing line or a knife (working body).

Also, the lawn mower has the following elements:

• protective casing;
• lever;
• a belt designed for ease of use of the device;
• Starter serving for launching a gasoline internal combustion engine.

All parts of the motorcycles are presented in the photo further.

The starter on the trimmer is an integral part, which performs the engine starting into operation. It is shown separately in two photos below.

The starter mechanisms of various models of the benzos work according to the same principle: during the launch of the ICE, the protrusions marked in the photograph above the number 1 are included in the hook with dogs 3. When the engine begins to work, they return to their previous position due to the effects of centrifugal. Similar role is also played by wires 2.

The process of returning to the initial position of the elements of the mechanism occurs due to the presence of a spring screwed around the axis. It unfolds when the rope is pulled. After releasing the cord, it is drawn and winding due to folding the spring. During the launch of the ICE of the lawn mower, the triggering mechanism turns its shaft until it starts to work (starts).

To date, gasoline motorcycles are equipped with two types of starter mechanisms:

The first option is much more common.

The starter on the trimmer can function without breakdowns for a long time. It is impossible to unambiguously indicate the deadline. Everything is determined by the initial quality of the device and compliance with the rules of handling it.

Rules for the operation and storage of a lawn mower

In order for the lawn mower to start well and continue to provide it with good storage and operation conditions:

• During operation, carefully monitor the cooling system, carefully and in time, clean the channels in the case, as well as the ribs of the starter;
• If necessary, use solvents, kerosene and other detergents for cleaning;
• Do not clean the “hot” tool. let it cool;
• Stactly comply with the requirements of the instructions for the operating mode, otherwise you can overheat the engine;
• If you do not plan to use the lawn mower in the next month, the fuel mixture from it needs to be drained, t. to. Over time, it breaks up into heavy fractions, which will definitely clog the channels of the carburetor;
• After draining the fuel, let the trimmer work at idle until it stalls, this will help to completely remove the rest of the working mixture.

Before winter storage, take the following steps:

• completely disassemble the braid, rinse and clean all the details you can;
• Inspect the details for damage, if necessary, eliminate distortions, impulses, bent and any other malfunctions;
• Pour a sufficient amount of oil into the gearbox and clean the air filter;
• You can partially disassemble the motor, rinse, blow and smear all the moving parts;
• In order to lubricate the piston, you need to unscrew the candle, raise the piston with the outlet to the extreme dead point, pour a little oil into the candle hole and scroll the crankshaft a couple of times;
• If you store the lawn mower not in the house, wrap the engine with an oiled rag.

EFCO Stark 25

Remember, careful compliance with the rules will allow you to forget that the lawn mower is bad for several seasons.

Dismantling, disassembling the starter of a trimmer for grass, replacing parts

First of all, the repair process begins with the removal from the trimmer for the grass of the entire starter. This process is inherently not difficult and will only require twisting several screws with a suitable locksmith tool. It should be noted that when dismantling the mechanism of launching the lawn mower, it is necessary to observe safety precautions, since the strip spring in a compressed state has sufficient energy to injure a person.

Parsing the starter motorcycles

This stage allows the master to establish the reasons for the failure of the launch unit, as well as to defect individual parts. The disassembly work should be performed in the following sequence:

Eliminated spring from a starter coil

Many experts note that the first time the installation of the spring is quite difficult, because the owner when repairing the starter of the trimmer for the grass will need not only the basic skills of the locksmith, but also patience.

The sequence of assembly of the starter of the trimmer for grass

Although the process of assembling the launch unit of the lawn mower is carried out in the reverse analysis of the order, there are several nuances that should be paid special attention to:

The coil with the spring installed must be turned and mounted in the groove of the starter case so that all the protrusions become in their original place.

Installation of a trimmer coil for grass in the starter case

When assembling the starter, pay attention to the compression spring, which on both sides should be limited by steel springs. If this is not done, then after the first season it will rub the grooves in the pulley case.

Recommendations for stretching the strip spring

After installing the starter, it is necessary to dismantle the rope handle and insert it into the groove of the coil. Further, against the move of the pulley when starting, it is necessary to make a certain number of revolutions specified in the operation of the gasoline trimmer for the grass. It is worth noting that on how to put the spring on the trimmer and how the tension will make the tension and further performance of the node depend. At the final stage, we spread the rope into a special hole and fix it with a handle.

Replacing the rope of the starter of the trimmer for grass

At the very beginning, it is necessary to extract a broken cord, select a suitable length depending on the trimmer model for the grass. We extend through a special hole in the pulley and at the other end we tie a knot in order to prevent jumping out the rope from the trimmer starting mechanism for grass. Next, we build a strip spring to the required number of revolutions and mount the handle.

Presumably poured a mixture on the eye into the EFCO Stark 25 Benzotrimer. Further, when they mowed already with a normal mixture, sometimes it did not start and did not start. They brought me. The candle gives a spark, put a new. Now it starts with a closed starter, start to open stalls, after warming up sometimes not stalling, when DASH GAZ all the same. What to do and how to shaman to work.

You need to check the piston. Better to contact the service. Most likely you did not have enough oil in gasoline.

You need to check the piston. Better to contact the service. Most likely you did not have enough oil in gasoline.

Yes, this is understandable, but you can’t do it on your own?

You may have to replace the piston. I would not take up such a job.

I’m afraid it’s not a mixture here. These trimmers for grass are unreliable, just horror. Symptoms are similar to the former Ruobi. I restored 2 times and ended with just a wide swing and throwing a trimmer for grass in a garbage tank. Well, since they undertook to repair, such a trimmer’s behavior for the grass suggests that little gasoline enters the cylinder. with a closed damper at low speeds, the mixture is still suitable for ignition, when there is a lot of air. it no longer burns. What to check- most likely the supply of gasoline was clogged. Sorinka got into the carb. Disassemble it and blow out all the holes. Check the gasket in the carbe. maybe the air is sucked there and the gasoline does not want to get into the cylinder. And the fact that they bore on the incorrect ratio of a mixture of oil and gasoline on this behavior of a trimmer for grass does not affect.

P.S although of course the ring of the piston could worry if there was little oil. But I don’t think that it would have happened at a time. It was necessary to shake at least 5-6 tanks at least. Unless of course the rings were placed there from raw metal.