There is no spark on a candle of lawn mower. The spark is missing on a gas troops

14th December 2022

Weak spark on the trimmer what to do. What to do if a gasoline lawn mower does not start. Strategy for eliminating problems

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. 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.

Tech Tip: SP-140T Troubleshooting

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.

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.

The gap between the ignition coil and the flywheel: what distance

ICE engines are installed not only on cars or motorcycles. They are widely used in various tools, for example, such as chainsaw or trimmer for grass. In case of their malfunction, poor start, it is often enough to install the correct gap between the flywheel and the ignition coil.

About the chainsaw and its inoperability

Chainsaw. installation in itself is not so complicated. But having the smallest initial knowledge is extremely important to find and eliminate any defect.

Modern electronics were so progressed that it also revolutioned in the world of tools. The saws of our days are light and powerful at the same time, equipped with electronic ignition systems of the ESZ.

Not so long ago, the ignition systems drank cam. This carried a lot of shortcomings: severity, complexity, high cost and much more. And the most important drawback of the archaic ignition system is the difficulty of the plant. Some of the systems of models of saws could not work out a spark sufficient for the outbreak at the speed of rotation of the crankshaft.

Modern systems are almost reliable. The models saw light and strong, the coil is made more professionally and serves its term almost without fail. However, there are also problems, but in most cases they can be fixed on their own.

Consider the main types of chainsaw malfunctions associated with the flywheel and ignition system.

As a rule, the most common ailment of modern chainsaws, implies the lack of a supply spark. The same directly depends on the shift of the lumen (clearance) between Babina and the flywheel.

Common malfunctions of installations are always connected with ICE. Problems arise in the system of ignition of fuel, the fuel flow module, in the internal elements of the engine itself.

As for the other nodes of the chainsaw, the malfunctions there, as a rule, due to the failures of the brake mechanism, poor lubrication, etc.D.

If the difficulties of starting are associated with the engine, then the symptoms are most often observed:

Ignition module

The inoperability of SZ chainsaws is the most common reason due to which the engine engine does not start. In most cases, it is recommended to start searching for a problem from here.

The ignition module of the chainsaw

First of all, thoroughly check the spark plug, gently throwing the armored wire from the head and twisting the candle from the nest using a special key;
The second is a check of the sparking using the starter twitching with a cap of the armor pipeline on a candle;
Checking the gap is the main theme of our article (more below).

So, the malfunction of the spark plug will clearly be evidenced by its sputum. A wet spark device for ignition of the fuel-air mixture suggests that the fuel is an excess of fuel, the carburetor is incorrectly configured or there are malfunctions in SZ.

The candle is checked only after drying. T.e., It must be carefully cleaned with a napkin, drain the insides of the internal combustion engine, clog the feed, and then start a couple of times a starter so that the excess of the combustible mixture comes out.

Then the spark device is put in place, and everything is checked again.

In general, the spark device can tell a lot about the entire ignition system. If a black fog is observed on the candle, this indicates violations in the communications of the gasoline mixture. Here, either the ratio of gasoline and oil was violated, or the carburetor is required to reconfigure. In some cases, this happens due to poor.quality oil.

A dirty candle is cleaned of a black carbon fiber with a needle or any other sharp object. Then, the electrode is cleaned with sandpaper (zero), until a metallic shine appears. The spark device is returned to the place, everything is checked again.

Next stage: checking sparking. The skirt of the spark device is brought to the cylinder, the starter starts. If a bluish spark slips at a distance of 2-3 mm, everything is fine. The sparking distance of 0.5-1 mm is already considered as a malfunction. There may not be sparks at all, and this is also a big problem. Perhaps this is the case of a cliff of the wire.

And so we approached the topic of our article. The chainsaw may not be launched due to a violation of the gap between the ignition and the Magneto flywheel. This very gap should be within 0.2 mm. It is checked very simply: a special gasket is placed between the flywheel and Babina. If it comes normally, not too free and tight, then the gap is normal.

The flywheel himself drank is round, and checking the gap with an ordinary probe is impossible. It would be more qualified to put a gap according to a special show, but it is not always possible to purchase. Yes, and not everyone can afford to buy a template that is not cheap.

Gap between Magneto and the flywheel

However, in return for the foreign template, you can use a cut strip from a plastic container per 1-2 liters from under the juice.

How to check the magneto chainsaw

Magneto, Babina, module. this is the ignition coil. She may absolutely not have to do with the malfunctions of the tool, and the reason to hide only in the gap or in another. But in some cases, it is she who becomes a factor of violation.

To check the Babin itself, you should also, as in the above case, use the exclusion of components from the chain. Or in other words:

evaluate the state of the Babin case visually for the presence of cracks and other visible defects;
check the purity of current.compromises of various nodes and elements;
diagnose the isolation and serviceability of the armored wiring, the reliability of fixing the fasteners, the absence of rust, etc.P;
evaluate visually the condition of the cap of the spark device;
check of the serviceability of the candle;
Diagnosis of the circuit switch, which is especially relevant for Chinese.made chainsaws.

Again, as in the above case, certain points are excluded from this chain, thereby there is the reason for the problem.

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, Early fuel ignition.

It can also be 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 have no tester. then you can use the following way, showing great 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.

complex reasons for the refusal of the lawn mower

If the step-by-step algorithm for searching for a malfunction has not given a result, and your braid for grass still does not start or stalls, it is worth examining the carburetor and the engine itself. A clogged carburetor can become one of the reasons, unstable operation of the tool. Three main problems can be distinguished here:

Clogging of channels or nozzles. All this is cleaned with special flushing or blown by a powerful stream of compressed air from the compressor. Do not use needles and wire, so the passing sections can be damaged;
Wear of the carburetor laying. Output. replacing the failed laying;
Violation of tightness. To check this indicator, you can use the usual household tonometer, replacing the pressure gauge on it with the right. Follow the testimony: if they do not change. Everything is fine, and since the pressure will begin to fall, which means that some part of the carburetor is faulty. Will have to find it and replace it with a new.

If everything is in order with the carburetor, then the gasoline trimmer for the grass may not be launched due to wear of the piston group. If chips, scratches or bully are found, on the piston or cylinder they should be replaced. Piston rings are subject to mandatory verification. A small rally piston when swaying the connecting rod indicates that the time has come to change the rings. This procedure is best entrusted to the specialists of the service center.

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 tool “on hot”. Let him 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.

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

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 tool “on hot”. Let him 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.

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

Recently, a gasoline trimmer for grass has acquired the status of one of the main tools in the arsenal of summer residents. And this is not surprising, because a motorized braid for grass allows you to quickly put a personal plot in order. However, sometimes it happens that a trimmer for grass and even for cold. In such situations, you have to independently establish the cause of the malfunction. Let’s find out what to do if a trimmer does not start for grass. The reasons that most often lead to such troubles will be considered further.

Checking the fuel mixture

Suppose you don’t start a trimmer for grass. In this case, the first thing is to check whether the fuel is enough in the tank, as well as evaluate the quality of the fuel mixture. To refuel a motorized unit, it is necessary exclusively high.quality gasoline. It is recommended to use fuel, the brand of which is not lower than AI-95. Refueling a trimmer for grass with fuel of unknown origin, not bought at a gas station, is fraught with frequent failures in the work of the tool. This can cause a breakdown of the cylinder-piston system. Repair in this case often exceeds the cost of the device itself.

Why is a trimmer not starting for grass gasoline? Incorrect preparation of the fuel mixture may also lead to this, which consists of oil and gasoline. The proportions in which the specified components are connected are indicated by manufacturers in the guide for the operation of a trimmer for grass. Preparing the fuel mixture is extremely not recommended in large volumes, that is, for the future. Indeed, with prolonged savings, there is a loss of the determining properties of the substance. Therefore, if a trimmer for grass does not start, it is worth draining the old fuel and use freshly prepared fuel mixture.

The choice of buyers of 2018

Lawn mowers based on internal combustion engines are the most convenient and popular in everyday life. Unlike electrical units, they are autonomous and do not limit the area of operation the length of the power cord.

However, like any complex mechanical devices, gasoline lawn mowers periodically fail or simply fail to fail. Below we will consider the most common breakdowns of lawn mowers operating from four.stroke internal combustion engines.

The most common malfunctions of the lawn mower

As for problems with failure or jamming of the engine, they are practically not found in the lawn mowers of the cart type, which we consider in the article. These malfunctions are more likely inherent in the gas.type gasoline braids and make up almost half the reasons for their users’ contacts in service centers.

No spark on the trimmer |

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. 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. 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.

Malfunctions of the ignition coils of chainsaws

Modern electronics revolutionized the world in many things. Even tools such as chain saws were affected by high technologies. Today’s saws are light and powerful. Electronic ignition systems are one of the most significant factors in this evolution. Below are interesting materials about such an important component of the chainsaw as the ignition coil.

Gasopil ignition systems

Not too many years ago, the ignition systems used in professional saws were cam. They were heavy, complex, expensive and prone to all kinds of problems. Especially on rainy days. Even when the saw “had a spark,” it was often difficult to start. Some saws barely produced enough energy to give an outbreak at the speed of rotation of the crankshaft. And the constant pulling of the starter’s handle was the norm.

Today’s systems are small, light, and durable. Compared to early ignition systems, they are almost reliable. The modern coil is professional and almost always serves the entire service life of the chainsaw. While changes in ignition systems were capital, sometimes problems in work may occur. Often these problems are easy to fix for yourself and do not require a trip to the workshop for expensive repairs.

What to pay attention to when it is difficult to launch the engine?

When the ignition problems arose, one of the first points for the inspection is. spark plug. Pay attention to damage to the ceramic insulator or signs of wear on the electrode. If the candle has a removable cap, make sure it will fit tight.

Next, look at the wires leading from the coil, whether there are a cliff or damage to insulation on them. The vibration of the engine can lead wires to friction against each other or another component. During friction suffers, even the strongest isolation.

Other problems arise when the wires pass between the parts of the anti.vibration system of the saw. Constant bends and stretching can ultimately lead to their destruction. Sometimes these cliffs are not obvious because they occur inside the isolation. The cliff is sometimes difficult to find, because the wire may look perfect outwardly.

The spark plug wire, also should be checked. Sometimes the cap of the spark plug can cause problems. A visible sign of the problem is a brown or burnt residue on the external ceramics of the spark plug. This is a sign that the spark walks along the external ceramic winding of the spark plug. At this time, the saw can work, but the work will be unstable and the currents will walk.

In the ignition system, the saws often fail to turn off the shutdown, they can be checked. Disconnect the wires of the switch from the module and check the ignition. Sometimes the switch makes him be constantly “turned off.”If you have a spark after the switch is turned off, replace it and test the saw.

Constantly check the wires, they should not be overwhelmed and not twisted, and the wires should not touch the vibrating parts tightly.

Problems with the modules of chain saw ignition

Ignition modules and coils sometimes tolerate breakdowns. When everything else is checked, suspicions of them. When they fail, one of two, as a rule, occurs. There is no obvious symptom. The only thing you can do is replace the module with a new. Or even better. try to change it with a saw used. If the spark did not appear after replacing the modules, apparently you missed something.

Replacing the module is the only reliable way to check the spark. All kinds of testers, as practice shows, are untrue. The only reliable test. replacement of the coil. Another symptom that indicates a bad electronic module or coil is a spark that becomes weak when the saw becomes hot. If the saw does not start after refueling, most likely the heat of the engine eliminated the spark. A weak ignition coil is sometimes able to give a sufficient spark to start and work a saw until it warms up properly. Когда пила и катушка соответственно нагреются, сопротивление транзистора возрастает и искра становится слабой. Symptoms: the saw starts and work well in the store, for example, but at work the saw dies and does not start, it will not cool. It can be difficult for the store to prove this malfunction.

This is a load imitator used to diagnose a saw engine with ignition systems that have problems associated with heating. This is an adjustable pneumatic brake system, the engine thinks that cutting is performed. Using this tool, we can heat the saw engine to operating temperature for a very short time. Since the load is constant and adjustable, you can easily control the engine for misfires or other operating defects that would be difficult to observe when a tree file.

On gasoline trimmers, both two.stroke internal combustion engines (ICE) and four.stroke. But the ignition system in them is no different from each other, so the repair and adjustment of this fuel ignition system will be the same for different types of internal combustion engine.

The ignition system of a two-stroke ICE consists of 2 elements: flywheel and coils (magneto). The figure below shows how they look.

There is a impeller on the flywheel, which works like a engine cooling fan. There are also permanent magnets on one side of the flywheel, the figure is shown by the arrow.

When the flywheel rotates in the coil, an electric current is produced, which serves for a spark on the spark plug. The spark appears at the moment when the magnets are directly under the magneto.

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.

Briggs and Stratton LAWNMOWER PRIMER BULB PROBLEMS. Won’t PRIME. WILL NOT Cold START. HOW TO FIX

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

How to check the serviceability of magneto

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 have no tester. then you can use the following way, showing great 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.

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

About the chainsaw and its inoperability

ATTENTION! A completely simple way to reduce fuel consumption was found! Do not believe? Auto mechanic with 15 years of experience also did not believe until he tried. And now he saves on gasoline 35,000 per year!

Chainsaw. installation in itself is not so complicated. But having the smallest initial knowledge is extremely important to find and eliminate any defect.

Consider the main types of chainsaw malfunctions associated with the flywheel and ignition system.

As a rule, the most common ailment of modern chainsaws, implies the lack of a supply spark. The same directly depends on the shift of the lumen (clearance) between Babina and the flywheel.

Common malfunctions of installations are always connected with ICE. Problems arise in the system of ignition of fuel, the fuel flow module, in the internal elements of the engine itself.

As for the other nodes of the chainsaw, the malfunctions there, as a rule, due to the failures of the brake mechanism, poor lubrication, etc.D.

If the difficulties of starting are associated with the engine, then the symptoms are most often observed:

Ignition module

The inoperability of SZ chainsaws is the most common reason due to which the engine engine does not start. In most cases, it is recommended to start searching for a problem from here.

First of all, thoroughly check the spark plug, gently throwing the armored wire from the head and twisting the candle from the nest using a special key;
The second is a check of the sparking using the starter twitching with a cap of the armor pipeline on a candle;
Checking the gap is the main theme of our article (more below).

Then the spark device is put in place, and everything is checked again.

A dirty candle is cleaned of a black carbon fiber with a needle or any other sharp object. Then, the electrode is cleaned with sandpaper (zero), until a metallic shine appears. The spark device is returned to the place, everything is checked again.

However, in return for the foreign template, you can use a cut strip from a plastic container per 1-2 liters from under the juice.

How to check the magneto chainsaw

To check the Babin itself, you should also, as in the above case, use the exclusion of components from the chain. Or in other words:

evaluate the state of the Babin case visually for the presence of cracks and other visible defects;
check the purity of current.compromises of various nodes and elements;
diagnose the isolation and serviceability of the armored wiring, the reliability of fixing the fasteners, the absence of rust, etc.P;
evaluate visually the condition of the cap of the spark device;
check of the serviceability of the candle;
Diagnosis of the circuit switch, which is especially relevant for Chinese.made chainsaws.

Again, as in the above case, certain points are excluded from this chain, thereby there is the reason for the problem.

Magneto’s resistance is measured. However, this option is not always applicable, since you need to first know the resistance parameters. In addition, in order to form the required impulse explosives, it is necessary to separate the indicators of various semiconductor elements. A sign of a malfunction, as a rule, is the chain (the wire and minus. Should show either the “rupture of the chain” or great resistance.
The verification will be able to carry out this way. use the device that checks the availability of a spark. It is installed in the rupture of the chain between the Babin wire and candles. The disadvantage of this method is that the device is so very expensive, is used for the most part in serious repair services.
“Grandfather” method of verification, which will save on an expensive device. Applies at its own peril and risk when there are no other outputs. The testing method is that the cap is thrown off the candle, a clove is inserted into it. A candle is reduced again. Cloves should be located at a distance of 6-7 mm from the cylinder. The chainsaw starts. The spark is investigated: it should be bright blue, if not, this is a sign of Babini problem.

“Grandfather” method of checking Babina has many drawbacks. This primarily applies to electric nodes in the system that can easily deteriorate. The distance between the cylinder and clove may vary depending on different tool models.

As for the setting of Magneto, it boils down to the study of the groove on the flywheel. UAZ in most of the current models saw no need to regulate. But it is possible to determine its exposition only in the corner between the mark after the groove on the flywheel and the magnets installed, again, on the flywheel.

Competently and accurately expose the gap between Magneto and the flywheel is what is more important.

You should know that Babina on the chainsaw systems is installed in the fuselage of the fan near the flywheel. The coil, in contact with the Machovik Magnitop, produces energy for the spark.

The replacement of the coil itself will be much more difficult to carry out, since the installation site is too uncomfortable. The installation of a new woman should be carried out so that the base of the coil is at a distance of 1-1.5 mm above the magnets of the flywheel.

No spark on the trimmer |

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. 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.

Malfunctions of the ignition coils of chainsaws

Gasopil ignition systems

What to pay attention to when it is difficult to launch the engine?

When the ignition problems arose, one of the first points for the inspection is. spark plug. Pay attention to damage to the ceramic insulator or signs of wear on the electrode. If the candle has a removable cap, make sure it will fit tight.

Next, look at the wires leading from the coil, whether there are a cliff or damage to insulation on them. The vibration of the engine can lead wires to friction against each other or another component. During friction suffers, even the strongest isolation.

In the ignition system, the saws often fail to turn off the shutdown, they can be checked. Disconnect the wires of the switch from the module and check the ignition. Sometimes the switch makes him be constantly “turned off.”If you have a spark after the switch is turned off, replace it and test the saw.

Constantly check the wires, they should not be overwhelmed and not twisted, and the wires should not touch the vibrating parts tightly.

Problems with the modules of chain saw ignition

Replacing the module is the only reliable way to check the spark. All kinds of testers, as practice shows, are untrue. The only reliable test. replacement of the coil. Another symptom that indicates a bad electronic module or coil is a spark that becomes weak when the saw becomes hot. If the saw does not start after refueling, most likely the heat of the engine eliminated the spark. A weak ignition coil is sometimes able to give a sufficient spark to start and work a saw until it warms up properly. Когда пила и катушка соответственно нагреются, сопротивление транзистора возрастает и искра становится слабой. Symptoms: the saw starts and work well in the store, for example, but at work the saw dies and does not start, it will not cool. It can be difficult for the store to prove this malfunction.

Sources:

https://www.avtoprin.ru/music/slabaya-iskra-na-trimmere-chto-delat-chto-delat-esli-benzinovaya/
https://telzakaz.ru/brake-system/v-gazonokosilke-net-iskry-kakie-prichiny-chto-delat-esli-benzinovaya.html
https://telzakaz.ru/fuel-system/pochemu-slabaya-iskra-na-trimmere-zazor-mezhdu-katushkoi.html
https://auto-piter.ru/the-instrument-panel/v-gazonokosilke-net-iskry-kakie-prichiny-ne-zavoditsya-gazonokosilka/
https://artreg.ru/ne-zavoditsya-gazonokosilka-benzinovaya-net-iskry-pochemu-ne-zavoditsya-benzokosa.html
https://www.avtoprin.ru/ctp/net-iskry-na-gazonokosilke-chto-delat-esli-ne-zavoditsya-gazonokosilka/
https://artreg.ru/net-iskry-na-trimmere-prichiny-pochemu-net-iskry-v-trimmere-ne.html
https://auto-piter.ru/interesting/pochemu-net-iskry-na-gazonokosilke-net-iskry-na-trimmere-prichiny-ochistka/
https://auto-piter.ru/exhaust-system/propala-iskra-na-trimmere-chto-delat-ne-zavoditsya-trimmer-benzinovyi/

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