The spark was gone on the Benzotrimmer reasons. Piston braid (cylinder, piston, finger, rings)

spark, reasons, piston, braid, cylinder

Why there is no spark in the chainsaw and how to fix it

The termination of the supply of an electric pulse into the combustion chamber entails a piston stop, and as a result of the entire tool mechanism. A failure in regular ignition of fuel can be associated with several types of malfunctions in various nodes of the chainsaw. This article will explain in detail how to identify the source of malfunctions and return the stable supply of sparks. All operations presented can be performed independently, without special skills and equipment.

To successfully determine the source of malfunction, it is enough to conduct a phased test of each, potentially defective node. Since the ignition system is responsible for the formation of a spark, you should first pay attention to its components (candle, armored vehicle, start button, module and flywheel). Diagnosis begins with twisting a candle and a visual assessment of the state of its contacts. The abundant presence of soot and corrosion, signals the need to clean, and the presence of moisture indicates overflowing, which happens due to the fault of the carburetor.

The next reason may be damage to the start button or worn out of the wire. To check such an assumption, just disconnect the switch from the coil and try to start the saw.

The armored vehicle transmitting the impulse from the coil to the candle can be blown in the places of contact with the body. In this case, the spark will skip on the outer part of the engine, without falling into the combustion chamber. Unlike wear on the wires of the launch button, damage to the high.voltage are more pronounced and they are easier to detect them.

The spring in the band (cap), which forms the contact between the armor and the candle, can be removed, broken or oxidized. It is enough to remove the cap and evaluate the condition with a simple visual inspection.

The gap between the flywheel and the coil should be in the range of tenths of the millimeter (on average 0.3 mm). For the effective exposure of the magnetic field, the gap should not be too large, but in any case there should not be the contact of the metal elements (magnetic circuit) of the module. The vibration of a working tool can loosen the screws or just slightly move the coil. The reliability of the mount is checked manually. If it does not sit tight and walks when exposed, then adjustment is required (the detailed process is described below).

If the gap is set correctly, and you are absolutely sure of the service of the candle, but you can’t understand why there is no spark on the chainsaw, the problem in 90% of cases is related to the coil. Despite the monolithic design and a flooded microcircuit, electronic components may become unusable. Often, the potential of the transistor is reduced, which begins to increase the resistance, holding the spark. This is especially often manifested “on hot”. The chainsaw stalls when heated. the coil requires replacement.

As the tool is operating, there is a gradual wear and erasing of the crankcase bearings, as a result of which the rotation of the flywheel becomes uneven. The beating gradually increases, which has an unpredictable effect on the position of the part during operation. The gap between the flywheel and Magneto will begin to hesitate until the elements come in touch or will disperse too far. The spark is not generated and the saw will stall. A similar condition is characteristic of a working tool and can be evaluated by eye. Twist the flywheel with your hand, watching the distance to the reel. If there is an obvious beating, then the bearing is replaced.

One of the common problems of the lack of sparks, not related to the ignition system, is to overflow contacts with fuel. This can happen due to the fault of the user who skipped the engine’s beat during the launch of the “cold” and continued to pull the starter with the closed air damper. The air filter can be greatly clogged and the carburetor is cut, which leads to the predominance of the liquid above the air and makes it difficult to ignite the mixture. The site has a separate topic dedicated to the problem of filling the candle, where all the problems and instructions are clearly presented to eliminate them.

How to check a spark in a chainsaw

The first stage of diagnosis of the ignition system is an elementary verification of its performance. This simple procedure is carried out in order to exclude or confirm assumptions and draw up a plan for further actions. To perform a check, there is a 19.regular hexagonal key for 19, but for more confidence it is better to have a spare candle, a working one 100%. The method is as follows:

The upper cover of the case is removed, the supra.light is disconnected and the candle itself is unscrewed by the hexagon.

Contacts are immediately checked. The presence of moisture indicates a transfusion, but this does not give a 100% guarantee of the serviceability of the ignition system. If the spark disappears during work, the candle will flood one way or another. Wipe well and dry well (preferably above the burner).

Install the candle in the cap of the armor.filled in the first paragraph (do not twist the engine).

Lean contacts against the metal surface and pull the starter cord. Keep the candle away from the hole of the combustion chamber (where it screws), otherwise the mixture that remains in it can ignite and splash out. The charge of the spark is about 40,000 volts, which can be very painful when impact, and even harmful, for people with heart problems. In order to avoid negative consequences, put on isolated gloves or hold the cap with pliers.

spark, reasons, piston, braid, cylinder

The presence of a spark between the candle and the metal surface, with 95% probability, celebrates the presence of problems with the ignition system, leaving the option of overflow for diagnosis. The remaining 5% relate to the cooled coil, which will again refuse to heat.

The second exception is associated with the conditions of the audit, where the candle gives out a spark in the fresh air, but after installing in the nest stops working. This rare phenomenon is associated with a defect in contacts, checked by a special tester and treated by replacing the part with the working.

If all actions are performed according to the instructions, but there is no spark on the candle of the chainsaw, even after installing a new, proven element, you should direct all attention to the ignition system. In order, from simple to complex, starting from the gap to the complete replacement of the coil, each reason is worked out from the above list. Most operations are simple and performed according to the. Work requiring explanations are presented further.

And again the carburetor.

Well, even if after such bullying your trimmer does not start for the grass, you can’t do without disassembling a carburetor for you. It may well be that everything is guilty in the needle in it. In any case, the disassembly and washing of this capricious mechanism certainly will not hurt. Adjustment of the lawn mower carburetor can be adjusted with your own hands, like the entire benzo tool for the garden, is not difficult to maintain equipment. Repair, configure without the help of others you can and necessary. For example, adjusting the carburetor of the lawn mower with your own hands. it is 5 minutes. The carburetor from the lawn mower is a node in the power supply system. Idle…

Many trimmers owners are faced with a problem when the device simply does not start.

One of the reasons for this may be the lack of a spark. This usually happens when the fuel floods the light of the ignition. In addition, you need to check the candles for serviceability, as this can also lead to a lack of spark.

The first sign of a faulty candle is the presence of a short circuit between its contacts, and in short. there is no spark on the trimmer.

In addition, the candle is considered faulty if it is covered with a black wet layer.

Such a layer appears from the oil combustion chamber. In such a situation, you have two exits: either clean the candle as it should, or buy a new.

Sometimes it happens that the candles are clean, but at the same time, the problem can be in its isolation, which is often covered with a black dry soot.

The reason for this may be a weak spark, excessively low spark plug, low fuel quality, dirty air filter or prolonged work at idle.

Here the output is the same. clean the candle or replace it with a new. over, the candle should be replaced if the contacts are strongly worn out.

In the case when there is no spark on the trimmer, how to solve the problem you will be told by professionals for a hundred.

Sometimes, the problem can be with magneto. Magneto may become unusable due to the fact that you could pull the starter cord at the moment when the ignition was turned off, and the candle was not grounded for the mass.

spark, reasons, piston, braid, cylinder

Such actions can easily disable magneto. In such a situation, the only way out is to buy a new magneto.

In addition, the problem may be the ignition node. This option can be considered if the candle and wire do not have any malfunctions.

In such a situation, it is necessary to engage in the replacement of the ignition unit. It can be found attached using two screws to the engine cylinder.

To obtain free access to the node, it is necessary to remove the enclosing casing.

To correct the current situation, you will have to replace the entire node, because, as practice has shown, replacing individual parts gives insufficient result.

If there is no spark on the trimmer, it can only be fixed in one way. replace it.

over, sometimes the problem should be sought in the ignition coil. The absence of a spark can lead to the failure of the coil or a malfunction in the chain.

To check the flow of current into the primary winding of the coil, you can use the light bulb, which must be turned on instead of the coil.

Then you need to carefully examine the contacts of the interrupter. If a strong spark occurs at the time of opening between the contacts, you can be sure that the capacitor is broken.

In this case, you have only one option of further actions. replacing the capacitor.

These are the main reasons why there may be no spark on the trimmer.

And you can also watch a video about the launch of a lawn mower

How not to get confused if the lawn mower does not start

The tool, despite its small dimensions, represents a complex technical device. If you study the operating annotation, it turns out, the reasons

, why the lawn mower is not started, known and eliminated. It is necessary to alternately exclude the reasons that make it difficult to start the tool. They usually start with more affordable nodes with a slight checking check.

There is no trimmer for grass gasoline causing there is no spark

How not to get confused if the lawn mower does not start

The tool, despite its small dimensions, represents a complex technical device. If we study the operating annotation, there will be a reason why the lawn mower is not started, are known and eliminated. It is necessary to alternately exclude the reasons that make it difficult to start the tool. They usually start with more affordable nodes with a slight checking check.

There is no trimmer for grass gasoline causing there is no spark

How not to get confused if the lawn mower does not start

The tool, despite its small dimensions, represents a complex technical device. If we study the operating annotation, there will be a reason why the lawn mower is not started, are known and eliminated. It is necessary to alternately exclude the reasons that make it difficult to start the tool. They usually start with more affordable nodes with a slight checking check.

Diagnosis of malfunctions

All the reasons why the lawn mower is not started can be systematized by the specifics of the operation of individual units. The service center is systematized:

  • Motor malfunction (piston wear, bearing malfunction, crankcase crack);
  • Fuel consistency supply malfunction. clogged pores of an air filter or a malfunction of a carburetor;
  • the ignition system does not work;
  • A malfunction of a mechanical disposition. a leak of hoses, broken wires under a braid, rupture of the tubes.

The user first needs to check if there is a fuel in the tank. Starting in agreement with annotation, putting the saw on the side. Gasoline trimmer for grass; starts without problems. May not start. Set the air damper to the position “Closed”, pump up fuel, turn on the ignition and produce 3-4 sharp jerks by the starter. If the engine has earned, open the air damper. The lawn mower is not started. we repeat the operations with a slightly open air damper.

The lawn mower cannot work for a long time. Gearbox and engine will overheat. Mowing less than 15 = 20 minutes, taking a five.minute break. In hot noon, the operating time is reduced by half. When mowing weeds, sedgers, the working hours are required to reduce.

If you are unsuccessful, we begin to find the reason for the refusal:

  • check the quality of fuel;
  • make sure the operability of the candle and the cleanliness of the candle canal;
  • check the cleanliness of the air filter;
  • Make sure that the fuel filter is not clogged;
  • Check the cleanliness of the bastard;
  • Clean the exhaust channel.

complex reasons will be detected in the diagnosis of a malfunction, leading to the overhaul of the carburetor. Such reasons include clogging of the internal channels of the carburetor, wear on it gaskets and violation of the tightness of internal halls with a vacuum loss. The causes of gasoline breakdowns and why the gasoline trimmer for grass is not that the internal combustion engine does not start. DIY lawn mowing repair, if it does not start, will require patience.

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.

Prevention of the problem

Often, the breakdown of the ignition coils are associated with the closure or cliff of windings and mechanical damage to the magneto body. This is due to strong blows, fluid and oxidation, as well as overheating. If you avoid such incidents, you can not worry about the integrity of the ignition coil.

Important! To prevent regular failure, one of the most important components of the ignition system, you need to refuel high.quality fuel. Bad fuel spoils these details.

One of the nodes of Magneto, which regularly suffer when using, are high.voltage wires through which current from the ignition module enters the candles. They have a high service life, but the damage to them is caused by users by an inaccurate circulation when replacing candles, carefully pulling the wire itself, and not for the tip. Another problem that can happen to them is moisture and oxidation or damage to isolation. If you carefully pull out the candle and avoid the penetration of the liquid into the device, these problems can be avoided.

So, the repair of the ignition coil is not very complex and can be carried out by the user independently, but subject to the above procedure for disassembling and replacing the magneto or contacts of the interrupt.

Why do you need a good spark.

The quality of the spark determines its ability to ignite the properly formed air-fuel mixture in working conditions. A weak spark in high pressure and temperature in the combustion chamber cannot do this. The ignition occurs later or does not occur at all. There is uneven engine in the engine, the engine does not gain momentum, there is vibration, detonation, the starter can have the effect of the “rear impact”.

The insidiousness of such a breakdown is that the diagnosis below does not give one hundred percent confidence in the effectiveness of the ignition coil. Such an implicit breakdown when there is a spark, but this is not entirely correct, often misleads and makes you write off problems with the ignition coil with a malfunction of the carburetor.

Typical actions in such cases. this is. It turns out that the spark can ignite such a spark, but it does not have the right. But the use of an enriched mixture leads to the rapid wear of the cylinder.piston group and muffler. Therefore, in such controversial situations, check both the carburetor and the ignition reel.

The quality of the spark is determined by its ability to set fire to a correctly formed air-fuel mixture in working criteria. The initial settings of the consistency are carried out in the spark or as it is still called a breakdown of a breakdown from an electronic current pulse developed by the ignition coil. Here the place is actually instant heating of the molecules of gasoline and oxygen, from which factors they come into a chemical reaction reaction.

It is clear that any differences in the characteristics of the spark leads to incorrect work. There are many circumstances of such deviations. Common:

Cylinder Bore Finish and Piston Ring Relationship Explained

  • Inolble in temperature, the operation of the ignition module: it works fine for a cool coil, heating stops working. Manifests itself in the usual work of the motor for cool, and refusal to warm. This is justified by the fact that the snuffs of the coils are diodes, transistors and capacitor. A malfunction at least any of these parts manifests itself only when warming up.
  • faulty candle. We will not repeat here here. You will find the material in the web.
  • bad contact, rust at the junction and a faulty switch to clarify here we will not
  • duffed (transmitted, melted, etc.D.) high.voltage wire. Here, too, what remains to make our client understand

Diagnosis of malfunctions

, Why the lawn mower will absorb. can be systematized by the specifics of the work of individual nodes. The service center is systematized:

  • Motor malfunction (piston wear, bearing malfunction, crankcase crack);
  • Fuel consistency supply malfunction. clogged pores of air filtralibo malfunction of the carburetor;
  • the ignition system does not work;
  • A malfunction of a mechanical disposition. a leak of hoses, broken wires under a braid, rupture of the tubes.

The user first needs to check if there is a fuel in the tank. Starting in agreement with annotation, putting the saw on the side. Gasoline trimmer for grass; starts without problems. May not start. Set the air damper to the position “Closed”, pump up fuel, turn on the ignition and produce 3-4 sharp jerks by the starter. If the engine has earned, open the air damper. The lawn mower is not started

The lawn mower cannot work for a long time. Gearbox and engine will overheat. Mowing less than 15 = 20 minutes, taking a five.minute break. In hot noon, the operating time is reduced by half. When mowing weeds, sedgers, the working hours are required to reduce.

If you are unsuccessful, we begin to find the reason for the refusal:

  • check the quality of fuel;
  • make sure the operability of the candle and the cleanliness of the candle canal;
  • check the cleanliness of the air filter;
  • Make sure that the fuel filter is not clogged;
  • Check the cleanliness of the bastard;
  • Clean the exhaust channel.

complex reasons will be detected in the diagnosis of a malfunction, leading to the overhaul of the carburetor. Such reasons include clogging of the internal channels of the carburetor, wear on it gaskets and violation of the tightness of internal halls with a vacuum loss. The causes of gasoline breakdowns and why the gasoline trimmer for grass is not that the internal combustion engine does not start. DIY lawn mowing repair, if it does not start, will require patience.

The performance of the spark plugs

If there is a need to figure out why a trimmer for grass is not started, then the state of contacts of the installed candle should be checked. In this case, you can figure out why the lawn mowing engine does not occur. For high.quality diagnosis of the spark plug, you must definitely adhere to the following scheme:

  • If during the dismantling it was found that the candle was wet, then in a small combustion chamber there is a certain part of the fuel, from which you do not need to rush to get rid of. To eliminate the problem, it is necessary to dry and carefully clean the contacts. After the manipulations done, you should carefully connect the candle. You need to turn on the ignition and without unnecessary efforts pull the starter handle. If the device is regular, then there will be a constant and bright spark. Otherwise, you have to replace the candle.
  • The state of involved electrodes can be considered ideal when they have a characteristic dark brown fog. If the candle has a white or even black soot, as well as wet, then it must be immediately replaced.
  • A trimmer for grass may not respond to launch due to the fact that there is too much gap between the contacts of the candle. To set the optimal gap, you need to use special multibody probes.

If, after all the manipulations done, the engine of the lawn mower did not start, then the cause of the malfunction must be sought in a carburetor or heat supply. Otherwise, you will have to check the serviceability of the involved high.voltage wire.

Not starting on a cold trimmer for grass. we eliminate the cause

On the cold.The reason is an air leak that does not allow fuel to download. In the camera.

After several jerks, he will start and stall, which is a normal phenomenon. What to do when the fuel was definitely normal, there is a spark, but a trimmer for grass does not start a gasoline? Putting the damper to the working position, start the tool again and start working.

Diagnosis of malfunctions

The lawn mower cannot work for a long time. Gearbox and engine will overheat. Mowing no more than 15 = 20 minutes, taking a five.minute break. At a sultry afternoon, the operating time is halved. When mowing weeds, sedges of work, it is required to reduce the time.

With a unsuccessful launch, we begin to look for the reason for the refusal:

  • Check the quality of the fuel,
  • verify the operability of the candle and the purity of the candle canal,
  • check the cleanliness of the air filter,
  • make sure that the fuel filter is not clogged,
  • Check the cleanliness of the saapun,
  • Clean the exhaust channel.

complex reasons will be detected in the diagnosis of a malfunction, leading to the overhaul of the carburetor. Such reasons include clogging of the internal channels of the carburetor, wear on it gaskets and violation of the tightness of internal halls with a vacuum loss. DIY lawn mowing repair, if it does not start, will require patience.

How the saapun affects the possibility of launching the gas mowing engine

Having excluded the malfunctions of the filters of the lawn mower, it is necessary to check the saapon. The cabin is called a detail that is responsible for the normalization of pressure in the tank. When the fuel gradually leaves the tank to the carburetor, then the pressure increases (the vacuum is created). To discharge the vacuum inside the tank, a saapun is used. a kind of valve that is on the tank cover of the tool. This valve has a filtering element through which the air entering the tank is filtered.

Over time, the filter clogs, and becomes the reason for creating a vacuum in a gas tank. Trite, but in 30% of cases, a trimmer malfunction for grass in the form of the impossibility of starting it is associated with clogging the cabin. The trimmer’s saapun can be cleaned, and the operation of the tool can continue. Make sure that the cause of the trimmer’s malfunction for grass is precisely the sapun can be as follows:

  • Wrap the gas tank cover
  • If air is pulled when diluting, then it is already possible to assume with 100% confidence that a saepun has come out of order
  • Twist the lid and start the engine of the lawn mower. If the trimmer for the grass starts, but after a while (when the amount of fuel in the tank is reduced) stalls, then it is necessary to clean the saepun

You can clean the bacon through a conventional sewing needle. Many do not even know about this important detail, so they often do not understand what to do when the mowing benzotrimer engine does not start. Answering the question of the influence of the saapun on launching the motor, I must say that it has a direct effect. Excessive pressure in the tank prevents the fuel supply to the carburetor, so the engine does not start.

How to prevent sudden breakdowns during the operation of a trimmer for grass?

So that the unit is always in a functional state, it is worth observing several simple rules:

  • Carry out timely, regular technical inspection of the main mechanical nodes of the device.
  • Refill a trimmer for grass with exceptionally fresh fuel, the quality and origin of which is not in doubt.
  • Check after each use of the tool, whether oxides and soot on the surface of the ignition system were formed.
  • Avoid the strong load of the trimmer for grass during work.
spark, reasons, piston, braid, cylinder

In order for the unit to remain in a working state, it is necessary to properly prepare it for storage in the winter period. First of all, you should completely disassemble the tool, and then perform washing and cleaning the constituent elements. It is also important to examine the functional blocks for damage, with the need to eliminate the deformation of the parts, all kinds of distortions, gusts of materials.

Proper care for the chainsaw

There are no unnecessary phrases in the operating instructions, everything that is proposed is aimed at uninterrupted operation of the gasoline pump. Cleaning all parts after each cycle of work facilitates the removal of unexplored residues and dirt. Clean only chilled nodes. This method contributes to the quality of the air cooling of the engine and the gearbox.

How Piston Rings Work? | Piston Rings Working in Hindi

For refueling, you must use fuel with recommended oil in the instructions. If the fuel mixture remains in the fuel tank, the oil will swim and, when starting, land on the damper, worsening its adjustment. The mixture may besiege and clog fuel in the carburetor.

When saving the equipment for the winter, inspect, lubricate the gearbox and the piston system, wrap the entire saw in a lubricated rag and store it in a dry place.

This is impossible, dangerous for the instrument and health of the mower, use a metal cable instead of fishing line. It cuts more efficiently, but the load on the gear and the engine increases. A worn piece of wire flies at the speed of a bullet during disconnection. Effective mowing can lead to the rapid wear of the piston group of the engine. For greater efficiency of the mowing, it is proposed to use the profile of the “Asterisk” line.

Lack of spark. checking the ignition module

Possible signs of failure of the ignition module:

If the wires and candles are in order, it is necessary to test the ignition module. We combine one probe of the multimeter with the module connector, and connect the second to the “mass”. After that, we try to start the engine. If the display of the device is displayed about 12V, the module is working.

Low voltage diagnosis

For this method, you need to find a 2-3 watt control lamp with a voltage of 12V. We connect one contact of the lamp to the contact of the low voltage of the trambler, and the second to the mass.

The next step is to close the Trumbler’s contacts and turn on the ignition. If there is no problem in the low voltage circuit, the lamp will go out with closed contacts and burn with open. If the opening of the contacts does not lead to the glow of the lamp, the cause of the breakdown is the primary winding of the coil or low voltage wires.

If the lamp shines continuously, regardless of the position of contacts, this indicates such possible breakdowns: