How the ignition of a gasoline trimmer for grass works. How to check a spark – a selection…

Why the trimmer for the grass does not start: the causes of the malfunction and ways to eliminate them

Often, owners of gasoline cos are faced with the fact that ignition does not work on their technique. In most cases, the problem is really in this node. To fix it, you need to adjust the ignition on the trimmer. But at the same time, there are frequent cases that the ignition coil is working and a breakdown should be sought elsewhere. The ignition system is arranged equally on four.stroke and two.stroke internal combustion engines, therefore, the correction of the malfunctions of this node is carried out in a similar way. In addition, the technique of different brands has an almost identical design of this most important component of the tool, which means that the process of adjustment will be identical for both the trimmers “Soyuz” or “Prostr”, and for Huter or samples of other brands.

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.

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.

About the chainsaw and its inoperability

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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.

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.

string trimmer weed eater coil test & replace

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.

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.

Why do I need to configure the ignition

In some cases, when the engine does not start, ignition control will require. Of course, you must first check the condition of the spark plug and a high.voltage cable with a lid.

The ignition control on a two.stroke engine is necessary 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 spark plug should appear when the fuel is compressed by the piston, when it reaches the upper dead point (VMT) slightly. Когда поршень проходит ВМТ, топливная смесь воспламеняется, в результате чего поршень опускается под действием энергии взрыва.

Therefore, if for any reason (mainly due to the shift of the flywheel to the shaft relative to its starting position), the fuel is heated before the piston passes, it leaves, and the crankshaft rotates in the opposite direction. This movement can damage the starter node, cut the starter cord, etc. D. In this case, this occurs early ignition of fuel.

It can also be later on the ignition on the trimmer: after compressing not ignited fuel, the piston drops, and at that moment a spark appears. In this case, the engine will either not start, or will significantly lose power and will not gain speed.

But such problems with early or late ignition on two.stroke internal combustion engines 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 attached to the shaft using dowels and nuts. Therefore, the wrong installation of the part is excluded.

How to check the health of a magnet

The magnet is the main part in the engine ignition system and is a coil with primary and secondary windings located around the core. Often, due to a faulty magnet, on the spark plug, the sparks disappears, and the fuel does not heat up. To check the coil, you need to use the tester and perform the following actions.

On the tester, switching to the resistance measurement mode, you need to set 200 Ohms. This will check the primary winding.
Connect one tester electrode to the “grounding” of the coil, and the other. To contact leaving Magneto. Usually the resistance should be from 0.4 to 2 Ohms.
To check the secondary winding, you need to install the device switch by 20 pcs. Next, one device of the device is inserted into the cap of the candle, and the second is connected to the “Earth”. Usually resistance should be within 4-6 pcs. And higher (depending on the model).

If you do not have a tester, then you can use the following method with great caution so that the electrode does not touch the cylinder, otherwise the coil will burn.

Remove the cover from the candle. You do not need to twist the spark plug to maintain compression.
Insert the base without a base in the lid. The nail should be such a diameter that it holds well in the cap well.
Attach the cap to the cylinder using a nail using a dielectric so that the gap between the electrode and the cylinder body is from 5.5 to 7 mm (but does not touch the “earth”).
Use the starter to simulate the engine several times. The ignition button should be enabled.
Follow the spark and what color it is.

Usually the spark should be strong, white or have a bluish tint. If the spark is weak and has orange or yellow, this indicates a faulty magnet.

It should also be borne in mind that sometimes a cold magnet can give a good spark. But after heating due to internal malfunctions, he ceases to produce electricity. As soon as the coil has cooled, the trimmer for the grass turns on again and works for some time until the magnet heats up again. This coil must be replaced.

Checking performance

Before the diagnosis of Magneto, you need to make sure that the problem is actually in this node. To do this, check the entire chain and make sure that there are no other reasons for the breakdown of the trimmer for the grass.

First, you should carefully examine the coil for the presence of cracks and other external defects on the case. Next, you will need to study all the elements and nodes conducting the current and make sure that they are clean.
The next step is the inspection of high.voltage wires. They must be working and reliably attached to the contacts, without traces of rust and with intact insulation.
The next action will be checking the candle cap. As a result of careless actions, the user often tears it off from the high.voltage wire, and then improvises and creates a home.made mount. You need to understand that any poor.quality connection in this place significantly reduces the power of the electric arc of the candle.
Then you should make sure that the candle itself is working. If you refuel a low.quality motorcycle with gasoline, the service life of this part is significantly reduced. In addition, it can be flooded or have a large incapacitance that prevents work. Sometimes the candle even takes up and does not unsc.
Next, you need to inspect the circuit switch. On trimmers and chainsaws of Chinese.made, it very often breaks.

Having performed all these actions and excluding the listed nodes from the list of possible causes of breakdown, you should proceed to check the coil. This can be done with several methods.

Method 1

The first way to check the ignition coil involves the use of special equipment (stand). At home, it is unavailable. you can find it only in service centers.

Method 2

Magneto diagnostics by means of a multimeter. a solution that can be implemented on its own if there is such a measuring device. In this case, it is necessary to perform the following.

Enable the resistance mode on the measuring device and set the value of 200 Ohms to test the primary winding.
Connect the electrodes of the multimeter to the “mass” of the magneto and the outgoing contact. If the winding is intact, the resistance will vary from 0.4 to 2 Ohms.
Turn on the 20 kOhm tester to diagnose the secondary winding. In this case, the first probe is connected to the “mass”, and the second is installed in a candle cap. Normal values-at least 4-6 kOhm. If the chain is damaged, then the tester will show infinity, and in the case of close. zero.

Accurate data about what should be the tester’s testimonies during the verification of primary and secondary winding, can be found in the instructions for using a trimmer for grass.

Method 3

If there is no multimeter, you can check the coil in another way.

Important! You need to carefully check so that the magneto does not burn. For this, it is important not to touch the cylinder by the electrode.

For diagnosis, the following steps need to be carried out:

open the lid with which the cylinder is closed;
remove the cap of the high.voltage wire from the candle without twisting the part itself to maintain compression;
Place a nail without a hat tightly in the cap, it will imitate the central electrode of the candle;
Dielectric material tie the cap with a nail to the cylinder so that the gap between the mmator of the Electrode of the candle and the mass fluctuates from 5.5 to 7 mm (the exact distance for a particular model is recommended to look in the user guide), but the part did not come into contact with the mass;
The starter several times play the start of the engine, holding the ignition button in the on the on position;
If a spark appears, you need to consider what color it is.

The main thing is the fuel mixture!

do not start after they are trying to “put them into operation” after a long storage. Troubles with starting in this case are often justified by the incorrect actions of the user.

If you are faced specifically with this phenomenon, then when you cool, you need to close the damper, then pump up a small amount of fuel consistency in the carburetor. After disassembling and assembling the Husqvarna 142 saw, a spark was missing on the spark plug. What to do. Then stretch the launch hand to a sense of resistance, then make a trimmer for the grass with sharp and energetic movements.

Why do you need a good spark.

The quality of the spark determines its ability to set fire to a properly formed air-fuel mixture in working conditions. A weak spark in the conditions of lean pressure and temperature in the combustion chamber cannot do this. Ignition occurs later or does not occur at all. There is an unevenness in the operation of the engine, the motor does not gain momentum, vibration, detonation occurs, the “reverse impact” effect may appear in the starter.

The insidiousness of such a breakdown is that the diagnosis below does not give a hundred percent confidence in the performance of the ignition coil. Such implicit breakdown, when there seems to be a spark, but it is not entirely correct, often misleads and makes you write off problems with the ignition coil to a carburetor malfunction. Typical actions in such cases are an increase in fuel supply. It turns out that it can set fire to the enriched mixture such a spark, but there is no correct. 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 coil once again.

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.

Settling of the ignition on the trimmer

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.

How the ignition system operates on the trimmer

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

How to test a small engine coil using a Multimeter.

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.

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

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.

Methods of checking the ignition module.

The only true way to diagnose the serviceability of the ignition coil is to replace it with a knowingly working test sample: if after the replacement everything works as it should, it was in the reel. If you do not have one, then we are moving on.

To exclude possible malfunctions from the wiring and shutdown buttons, to disconnect the control wires from the coil during the audit.

Measurement of reel resistances. This method is not always applicable: firstly, you need to know the parameters of the resistance resistance of the coil windings. Secondly, the ignition in addition to the inductance coil contains semiconductor elements to form the desired high-voltage pulse. As mentioned above, their malfunction can only appear when heated. For the correct measurement of the module, it is necessary to turn off the armored pipeline and caps from it, which will not work without consequences. In a word, reliable measurements are possible when the correct parameters are known and they are carried out in working conditions.
Using a device that checks the presence of a spark. It is mounted in the rupture of the chain between the candles and the high.voltage wire of the ignition coil. The device is expensive and is used mainly in serious service centers. As an example, the tester of the ignition system from the Stil Zat 4. The price is 30-50.
With a candle. Turn the candle and attach its body to the cylinder. Pull the starter and watch the spark between her contacts. This method is approximate and does not give a complete idea of the state of the ignition coil, since the candle is not “under pressure” and the flywheel will rotate faster due to the lack of compression in the engine (the candle is turned)
The “barbaric” method is used at their own peril and risk in hopeless situations.

Remove the cap from the candle and insert a nail into it

Carefully, do not damage the inside of the cap. then put it back on the candle and operate. It is better to bite off a nail in a nail

Otherwise difficulties may arise with its extraction.

“Start” the engine, that is, take ordinary actions at the tool factory. By this, you will force the ignition system to pay attention to the fact that the candle should be screwed into the candle hole.

See the presence and color of the spark. Ideally, the spark should be “strong” and bright blue, everything else is a sign of a malfunction.

You cannot twist the candle: the lack of compression will lead to a faster rotation of the flywheel, which will not correspond to the real modes of work

If there are electronic nodes in the ignition system, then this method can disable them

The distance between the nail and the cylinder models the compression and dielectric properties of the fuel mixture. The distance of 6-7mm is approximate and may differ on different product models.

Philosophy of the method: there should be a big gap between the nail and the cylinder, the spark should be “strong” and bright blue

In order not to use a nail you can independently manufactured sample. To do this, you need a new obviously working candle. Increase a gap to 4-5 mm in it. Next, we put the cap on it, apply to the engine and evaluate the quality of the spark. It should be “strong”. a chapel and bright. In high pressure and temperature conditions, it will be able to set fire to the fuel mixture. The weak spark will not do it. Ignition occurs later or does not occur at all. There is an unevenness in the operation of the engine, the motor does not gain momentum, vibration, detonation occurs, the “reverse impact” effect may appear in the starter.

Coils (modules) of ignition benzos | Diamond

This navel is suitable for most for chainsaws and gas.made gas.core. Article: 384552ns.

This nursing is suitable for chainsaws and benzos, it is assembled with a high.voltage wire (armor pipeline) long.

This ignition module is suitable for benzotrimmers with an engine volume 25-30cm3, such as Patriot 3045/3055, Homel.

The ignition coil assembly is suitable for benzos (trimmers) with engine volume 26ss. Article: 010093 pr.

The ignition coil or magneto is suitable for Chinese lawn mowers (trimmers for grass) with engine volume 33ss. Vendor code:.

The ignition coil or magneto is suitable for Chinese lawn mowers (trimmers for grass) with an engine volume 43ss and 52ss. Etc.

This ignition coil (Magnetto) is suitable for Chinese gas with an engine volume 43-52 cm3 type of pace, ka.

This ignition coil (Magnetto) is suitable for four.stroke Chinese benzosos, such as Carver 31F article.

The ignition coil is suitable for the lawn mower (trimmer for grass) STIHL FS 38, Stihl FS 55 Article: 41404001308.

The ignition coil is suitable for the lawn mower (trimmer for grass) Husqvarna 125, Husqvarna (Husqvarna) 128. Article: 010279.

The ignition coil is suitable for the lawn mower (trimmer for grass) Husqvarna 125, Husqvarna (Husqvarna) 128. Article: 545046.

How to set a ignition on a trimmer

It is necessary to adjust the ignition system so that the fuel is ignited at the right time in the combustion chamber.

Important! Когда поршень сжимает горючее и практически достигает мертвой точки сверху, в свече возникает искра. Further, when it passes the maximum upper point, the fuel is lit up, as a result of the explosion, energy forms and directs the piston down.

If the flywheel is shifted to the shaft relative to its original position, the fuel is ignited faster than the piston overcomes the upper dead point. As a result of this, the piston moves back, and the crankshaft rotates in the opposite direction. You can determine the early fire of the fuel by a broken launch cord, a broken starter node or other breakdowns.

Sometimes ignition is late. The piston compresses the irreparable fuel, and then goes down, and only then the spark forms. As a result, the engine either does not work or its power is reduced, and the speed is gaining much slower.

Typically, a flywheel with magnets is installed in an ideal position, as if coordinated with the operation of the piston, and in order to avoid displacement, it is carefully fixed. This allows us to say that an incorrect installation of a part is impossible. But if the shift of the flywheel is a confirmed fact, then it is a failure or accident. Thus, the installation of the moment of the ignition is not required, since problems with early or late ignition of fuel happen very rarely.

How to set an ignition on the trimmer Echo SRM 22 GES.

Important! It is very simple to regulate the ignition system. There is no need to calculate the ignition angle angle. The maximum that you need to do is to properly set the gap between the flywheel and the reel.

Typical malfunctions

Before starting the ignition of the trimmer for the grass, you need to cut off other probable causes of breakdown and make sure that the problem is really in this node. For this, it is necessary to carry out a number of actions in the following sequence:

inspect the ignition coil body for damage and defects;
make sure that there are no pollution on all nodes and elements conducting current;
check the integrity and isolation of the wiring, contacts, the strength of the fastening, the presence of rust at the joints;
inspect the candle cap, as it regularly breaks away from the high.voltage wire, and they try to restore it manually, and any unreliable connection lowers the power of the electric arc of the candle;
check the candle, since the quality of modern gasoline very quickly disables this part, but there is another possible problem. the candle is wet;
make sure the circuit switch is working.

By excluding all possible malfunctions, you can proceed to adjust the ignition of the coil.

The second method

If you use the tester, there is no other way to check. At the same time, it is important not to touch the cylinder electrode, otherwise the coil will be damaged.

It is necessary to remove the cap from the spark plug. You should not unscrew the candle, as this will save compression.
Then you need to choose a nail with a remote hat and tightly insert it into the cap.
Further, the cap with a nail should be reliably tied to the cylinder by the dielectric. In this case, the electrode should be at a distance of 5.5-7 mm from the cylinder body, but do not touch the mass.
Then the starter needs to simulate the start of the motor with the ignition button. In this case, it is required to carefully monitor whether the spark will appear, and try to determine its color.

Important! A strong spark of white or with a blue shade indicates in favor of the serviceability of magneto. If it is weak, as well as orange or yellow, magneto is damaged.

There is one important point that needs to be taken into account when diagnostics: uninhabited magneto in any state can form a powerful spark. However, if it is faulty, then, heated, stops creating a current, and the trimmer does not start for the grass. Later, cooing, the coil again returns to the working level, the unoic tractor turns on and for some time works at idle or under load, until the magneto temperature rises again. In this case, the part needs to be changed for a new.

On a note! In a number of situations, the problem with heating does not occur due to the fault of the coil, but due to the spark plug. This means that the test must be subjected to both parts.

Features of adjustment on different models of trimmers

The ignition system is arranged in a similar way on the technique of various brands, so the process of adjusting will look the same. The differences, if they are, are insignificant. They are mainly associated with the disassembly of technology. For example, removing the casing from the engine on different trimmers is performed with some differences. So, on the devices of Patriot, you must first twist the bolts and disconnect the air filter housing with a slotted screwdriver. After that, it will be very easy to remove the plastic casing. A detailed diagram and a trimmer for grass of a certain model are usually shown in the instrument operation instructions.

So, you can adjust the ignition for a gasoline trimmer for grass with your own hands. This process is simple if you know the correct procedure. But preliminarily it is necessary to exclude the likely malfunctions of other nodes and parts, for example, the spark plugs or magneto, which may cause the absorption of the motor motorcycles. However, analyzing the technique of different brands, it is necessary to take into account the likely differences in the design, which are described in detail in the user guide.

Distributor malfunctions:

wear or breakdown of sliding coal contacts
Weakening or breakdown of springs
Mastery or breakdown of sliding contacts of the distributor
cracks in the insulating part of the distributor drum and lids

The electrical strength of these parts is checked with a voltage of 12 16 kV. To check the state of the distributor, you can use the control and test stand Ki-968.

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.

Diagnostics and configuration of magneto

To carry out this procedure, you will need:

Sandpaper (zero) and flat suprafil
Solidol
Cross screwdriver
The screwdriver is flat
Electric clamp type “crocodile” mini mini
If necessary. a new armored vehicle (car, silicone) and a new candle A17V
If necessary. nail polish, island
If necessary-the new capacitor 0.17-0.25MKF

So, if Magneto’s work, details should not pay attention to: wires, candle, capacitor, contacts and coil should not pay you. You can periodically extract magneto from the stand. The first thing to start with is the inspection of the design of the magneto. Remove the lid.

Are there any accidentally damaged wires and their insulation, excessive dirt or oily in the housing, traces of crushing the metal of the device? Whether the contacts in the process of rotation are adjacent to each other, and whether the gap is formed between 0.7-1.0mm between them? You can use backlight and magnifier.

Ignition adjustment algorithm

The ignition on the trimmer is adjusted quite simply.

Coil (transformer)

As a rule, the coil is not repaired. And she, as a rule, is less likely to fail and needs to be replaced. But still the reel reel is discord! It happens that from one current is like a lightning, on the other no.

And never throw a knowingly non.working coil! There is still a lot of things from her for your motorcycle! For example, lighting! But about this. part 3.

At the very beginning of this part of the article, we got acquainted with the reel device. It has two windings: low.voltage (primarily wound on the core and has about 400 turns) and high.voltage (secondary, wound on top of the primary and has about 18,000 turns).

The main trouble of such a coil is the formation of a short circuit (short.circuited turns) in a high.voltage winding. This makes the coil unusable. Replace the coil.

Or let’s improve Magneto so that we will never face the problem of this coil again! (About this part 2).

While we will consider the version that you replaced the coil with another. Clean the copper contact of the coil with zero. Inspect the wire and rations. If required, solder. Gather magneto and again to the stand! Install all the necessary gaps we talked about. Launch! There should be a spark! Change rotation speed! Now everything should be fine, but maybe another option.

Eccentric adjustment

To configure sparking (current strength), Magneto needs to rotate the weakened eccentric (cam) regarding its shaft and achieve the greatest current power.

Stand: the drill rotates, the end of the stripped armor pipeline is brought to the magneto body at a distance of 5mm. If the current is insufficient or it is not at all. now we will start setting up a fist (he is an eccentric). Stop the drill. The fist is attached to the shaft with one screw with a puck in the center of the shaft.

The gap on the trimmer between the coil and the flywheel

Gap on a trimmer between a coil and a flywheel

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Spare parts for chainsaws
Cylinder-piston groups of chainsaws
Carburetors of the chainsaw
Starters for chainsaws
The ignition coils of the chainsaws
Circus brakes of a chainsaw
The crankshafts of the chainsaw
Clutch of chainsaws
Oil pumps of chainsaws
Flaim chainsaws
Springs of a chainsaw
Mufflers of the chainsaw
Basils and gaskets of chainsaws
The bearings of the chainsaw
Clock tensioners
The remaining nodes and parts of the chainsaw
Traffic jams (lids) tanks of chainsaws
Spare parts for trimmers
Trimmeres cylinder-piston groups
Carburetors for trimmers (benzos)
Starters for trimmers (benzos)
Trimmeres ignition coils (benzos)
Trimmeres Clutch (Basos)
TRAMMER FLASS (BAMS)
Trimmer gearboxes (benzos)
Trimmeres crankshafts (benzos)
Elements of the bar and handle
Basmers and gaskets
Trimmeres silencers (gasosocos)

Terminology

Ignia interrupter-an electromechanical device that provides timely supply of high voltage pulses to the spark plugs. Often it is called a trambler.

The ignition ahead is ignition of the working mixture in the cylinder earlier than the compression tact ends.

The ignition angle (UOZ) is the angle of rotation of the crankshaft of the engine from the position corresponding to the appearance of the spark on the candle until the piston arrives in the upper dead point.

Contact ignition system. a system in which the switching of the ignition coil is provided by a mechanical interrupter.

The non-contact ignition system is a system in which the switching of the ignition coil is provided by an electronic module controlled by the electronic crankshaft position sensor-for example, the Hall Sumer (VAZ-2108) or magnetoelectric (GAZ-2410).

The ignition system interrupter is a mechanical switch in a trimbler directly connected to the primary circuit of the ignition coil.

The runner is an element of the trambler, alternately transmitting a high voltage from the ignition coil to high.voltage wires connected to the engine spark plugs.

The angle of the closed state of contacts (KSR) is a value showing how long the contacts of the mechanical interrupter should remain closed. For classic Lada, the Karsk is approximately 55 degrees. The correctly selected leash gives the ignition coil the ability to gain the desired energy and fully give it to the spark plugs.

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:

oxidation of the contacts of the Trumbler;
damage to the wire connecting the Trumbler body and its mobile disk;
Damage to the wire between the lever and the Trumbler terminal.

Prevention of problems

The ignition coil failures are often associated with a short or open winding and mechanical damage to the magnetic case. This is due to strong blows, liquid and oxidation, as well as overheating. If you avoid such cases, you do not need to worry about the integrity of the ignition coil.

One of the components of Magneto, which regularly suffers during use, is high.voltage wires, along which the current is supplied to the spark plugs from the ignition module. They have a long service life, but users themselves harm them due to irrational behavior when replacing the spark plugs, unintentively pulling the wire, and not the tip. Another problem that can happen to them. It is moisture, oxidation or insulation damage. These problems can be avoided by gently removed the spark plug and avoiding liquid entering the device.

Therefore, the repair of the ignition coil is not very complicated and can be performed by the user himself, but subject to the above procedure for disassembling and replacing the magnet or contacts of the switch.

Sources:

https://tehnostroiplus.ru/elektroinstrumenty/kak-proverit-katushku-na-trimmer.html
https://jusof.com/zazhiganie-na-trimmere/
https://oreninstrument.ru/informaciya/motokosa-zazhiganie-2.html
https://nordtool.ru/info-arhiv/zazhiganie-benzokosy-huskvarna.html
https://molibden-wolfram.ru/kak-vystavit-zazor-zazigania-na-benzokose/
https://motorsmarine.ru/zazhiganie/zazhiganie-benzokosa.html
https://jusof.com/kak-pravilno-otregulirovat-zazhiganie-na-trimmere/
https://drillzone.ru/svarka/kak-vystavit-zazhiganie-na-trimmere.html
https://delta-instrument.ru/tehnospravka/proverit-katushku-zazhiganiya-trimmera.html

Grass Trimmer gasoline, grass, ignition, trimmer