How to check the ignition coil of a walk-behind tractor with a multimeter

Differences in types

There is no particular difference between domestic and imported ignition coils. There is a difference in the types of devices. The main ones are two-spark and one-spark. Individual ignition coils are installed above the spark plug and require the installation of an additional sensor on the camshaft, which determines the top dead center. Double spark coils were previously used for two-cylinder engines and made it possible to abandon the ignition distributor. On modern models, either two coils are installed, or several coils are combined in one case. Only suitable for engines with an even number of cylinders. The fault symptoms of the coils are exactly the same.

Checking the ignition module

This device is installed on cars with an injection engine, mainly on a domestic VAZ. Its peculiarity lies in the simultaneous supply of a spark: immediately to two cylinders 1 and 4, 2 and 3. Troubleshooting in this case is greatly simplified. If the corresponding pair of cylinders does not work. a module malfunction is diagnosed. In the vast majority of cases, this is true, but sometimes, however, very rarely, the entire module fails. In this case, you will have to check the ignition coil of the VAZ injector using a multimeter. This requires:

  • Disconnect the connector from the module and pull out the high-voltage wires.
  • Set the switch to 200 ohm position.
  • Alternately measure the resistance between the middle and outer contacts of the connector.
  • The meter reading should be within 0.5 ohms. In this case, it is necessary to take into account its error.
  • Now you need to measure the resistance of the secondary windings. It is necessary to sequentially install the probes between the high-voltage terminals of the first and fourth, and then 2 and 3 cylinders.
  • Set the mode switch to 20 kΩ.
  • The instrument should show a resistance of about 5.4 kOhm.

KZ design

Any ignition coil. it is primarily a high-voltage transformer consisting of two windings. One of them, the primary one, receives low voltage pulses. It is wound with a wire of large cross-section and contains a minimum number of turns (about 150). Therefore, its resistance is not enough.

The other winding is called the secondary winding, and a high voltage is induced on it, causing sparks in the cylinders. The cross-section of the wires of this winding is tenths of a millimeter, and the number of turns. several thousand. Accordingly, her resistance is quite large. several kilo-ohms. Specific figures have no meaning yet. The main thing is to remember that the primary winding. this is a few ohms, but secondary. units kOhm. This will come in handy in the future, since you can check the health of the ignition coil only by measuring its resistance.

Method two: check by measuring resistance

Checking the ignition coil with a multimeter

Usually a multimeter is in the garage of most car enthusiasts.

At the stand

Testing at the stand is used extremely rarely.

  • It requires removing all coils from the vehicle.
  • All studies are carried out only in a car service and require special equipment.
  • High costs.
  • The ignition coil cannot be repaired. Fifthly, the malfunction of the ignition coil can be determined without removing the coil from the car.

Correct operation of the ignition coil is the key to engine durability. A faulty mechanism affects the operation of the vehicle as a whole. If the ignition coil does not work properly, other important parts of the machine may fail, so timely diagnostics will help the car maintain its driving performance for a long time.

The second way to check is with an ohmmeter or multimeter with the ability to adjust the range of 2 megohms. The fact is that one of the important characteristics that can be used as a test is resistance. In this case, this indicator of both windings of the coil is measured.

Such a check will give a more accurate answer whether this element is the cause of the motor interruptions. But for this you need to remove it from the car.

Measuring the resistance at the ignition coil

Before taking measurements, you should ask what is the nominal resistance of the coils. For many coils installed on cars, the resistance of the primary winding is in the range of 0.7-1.7 ohms, and the secondary one is 7.5-10.5 kΩ, but the values ​​for other coils may differ. Before checking, you should check the resistance of the device itself by shorting its probes together.

The primary winding is checked first. To do this, the probes are connected to its terminals, usually they are located on the sides of the central terminal of the coil. After measurement, the resistance of the device itself is subtracted from the obtained value, and then the result is checked against the nominal value. Any out of the rated resistance range will indicate a coil malfunction.

After that, the secondary winding is checked. To do this, one of the probes is connected to the central outlet, and the second to the side, no matter which one. After that, you need to reconcile the measurement results with the nominal indicators.

Establishing the causes of the malfunction visually

Regardless of the ignition coil installed on the car, any diagnostics must begin with a visual check.

  • The coil body and contacts are subject to inspection. It is required to make sure that the case is in good condition, there are no cracks, chips, black spots and places of partial burnout on it. It is necessary to wipe the case, make sure there are no traces of oil leaks or traces of leaks in the case. If any of the listed defects is found, further diagnostics is not required. The ignition coil cannot be repaired. She is only being replaced.
  • After that, you need to check the status of the contacts. Oxidized leads must be cleaned and refurbished. Poor contact affects the correct operation of the engine and leads to failure of the ignition coil.

If the malfunction was established visually, there is no point in looking for the cause inside the mechanism, change the coil without hesitation

Possible malfunctions

Problems in the operation of the ignition coils can be caused by the following reasons:

  • If a leakage has occurred in the engine for any reason, this can lead to problems in the operation of the unit in question.
  • Short circuit occurs.
  • Sometimes the machine may have the wrong spark plugs installed. If they have too large a distance between the contacts or, conversely, the gap is too small, then the ignition system will not be able to work normally.
  • If the spark plugs are faulty, this can lead to breakdown of the insulator and the appearance of back gases.
  • Constant overheating of the coil. Most often it is a consequence of long-term intensive operation of the unit. If the ignition works for a long time without starting the engine, then this usually leads to a sharp increase in the temperature of the coil.
  • Mechanical failure. The condition of the coil is affected by vibrations, and oil can also enter, which can have a destructive effect on the insulation.
  • Long-term operation on a VAZ 16 Priora or on other models leads to gradual wear.
  • Working in an environment where a lot of dust and dirt degrades the quality of contacts.
  • If the battery provides insufficient voltage, then the functioning of the short circuit slows down. This leads to an increase in the load on the control unit and causes increased wear.

check, ignition, coil, walk-behind, tractor

The most common problem is the wear of the assembly due to the long operating time. If you check the resistance of the ignition coil, then you can accurately find out the degree of performance of the part.

When a coil is defective, it can be seen by the following symptoms:

  • Misfire appears. In this situation, the spark does not always occur.
  • The engine does not start well. This feature will be especially pronounced at low temperatures.
  • Changed the color of the wires connected to the part.
  • There are spots on the surface. Sometimes this is caused by a short circuit.
  • The transition to the safe-mode is carried out spontaneously.
  • Panel displays incorrect diagnostic data.
  • When it rains, the motor works several times worse.
  • If the driver presses the accelerator too sharply, then the desired action does not occur.
  • Engine will not start despite repeated attempts.
  • Power loss occurs.

If such signs appear, it is recommended to check the operation of the ignition coil with a multimeter.

Verification procedure

If you need to check the ignition coils, you can contact the diagnostic center or do it yourself. We need to prepare for this work. It is recommended to first study how to ring the ignition coil with a multimeter.

To be sure of the accuracy of the readings, it is necessary to properly prepare the device before checking the ignition module. First you need to connect the black and red test leads. The first is inserted into the outermost slot labeled COM, the second into the adjacent.

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After that, you should measure the resistance to check the functionality of the multimeter. To do this, the device switch must be set to the resistance measurement mode. Then you need to touch the probes to each other. If zero appears on the screen, then the device is working properly.

It is necessary to measure the resistance at the primary and secondary windings. The values ​​obtained must correspond to the parameters specified in the operating instructions. Before you check the ignition coil on the trimmer, or any other device, you need to study the technical documentation. If it was not possible to find out what the resistance of the tested short circuit should be, you can focus on the parameters of similar models.

The ignition coil is usually cylindrical in shape. There is a central contact on one end of it, and two more are on the sides of it. Checking the part must begin with a visual inspection. You need to make sure that there are no chips, cracks or other damage. The rules for checking a Priora or other car are the same.

In some cases, stripes can be seen on the coil body, which are called “breakdown tracks”. They are formed under the influence of electric current. Discoloration of the housing material is also a sign of malfunction.

If there are no Комментарии и мнения владельцев about the appearance, you can start checking the coil with a multimeter. First you need to test the resistance level between the side terminals on the ignition coil. Checking high-voltage ignition wires with a multimeter requires the following actions:

  • Switch on the multimeter and set the mode selection knob to the state corresponding to the resistance measurement. This sets the value equal to 200 Ohm.
  • To check the wires, you need to touch the probes to the side terminals.
  • Check the resistance shown on the multimeter display. It must correspond to the one specified in the technical documents. Usually this value is in the range from tenths of Ohm to several units.

This is the procedure for testing the primary winding. If the value is zero or goes beyond the upper limit of the normal range of values, then this indicates a malfunction of this node.

Checking any ignition module with a multimeter is carried out in the following sequence:

  • Prepare the tester for work. It must be set to resistance test mode. Select a range of 200 kΩ.
  • Connect the measuring probes to the central contact (black) and to one of the side contacts (red).
  • Check the value shown on the multimeter display. It depends on the coil model and should be in the range from 9 to 20 kΩ.

The resistance value of the secondary winding must correspond to that indicated in the technical documentation.

It is also necessary to check for a short circuit with the case. To do this, check the resistance between each contact and the housing. If it is zero in at least one of the cases, then the part is faulty.

Using the instructions above, you can test the chokes on any mechanism. Checking the ignition coil of a chainsaw or other device with a multimeter will increase engine life.

Varieties of coils

An inductor can be found in many devices. For example, without it, the ignition system of a grass trimmer for cutting grass, a metal detector, a chainsaw is impossible. Now manufacturers offer three types of starter coil:

  • The classic scheme with a spark spreader or, as it is also called, a distributor. This option is considered insufficiently effective, but it is often found on older models.
  • Dual Ignition System (DIS). Here, one coil serves two candles. A working spark arises at the compression stroke, the other one is idle during the release.
  • The name of the COP design literally translates as “the coil found on each spark plug”. In such engines there is a coil for individual use. IKZ. This option is the most common in modern car models.

In all these types, a prerequisite is the conversion of low voltage to high voltage through the use of inductance.

Coil working principle

This device is required not only to start the motor, but also to keep it running. A coil is needed to convert a small DC voltage from a running battery into a strong impulse that produces a spark. It is required to ignite the fuel mixture, which occurs during engine operation.

The coil consists of a primary winding, which receives an input voltage, and a secondary winding, which creates a potential difference to form a spark. In its manufacture, first, a secondary winding wire is wound on the ferrite core, which has a lot of turns. Usually their number is several tens of thousands. Then the primary wire is wound on the secondary winding, having an average of 50-100 turns. Both the one and the other have two conclusions. The primary has both input pins. In the secondary, one is connected to the primary winding, and the second is the output.

The coil receives voltage from the battery, the contactors of which are switched on and off by current. This creates a magnetic field in the primary winding. It induces an electromagnetic field on the secondary, creating a strong electromagnetic pulse. Thanks to it, a high-voltage pulse is generated on the spark plug electrodes, creating a spark. It ignites the fuel mixture, the combustion of which helps the piston move. Thus, if the ignition coil is defective, normal engine operation is not possible.

Depending on the model, the vehicle may have one or more ignition coils. If there are workers among them, the engine will be able to start, but it will work worse than usual. In modern machines, a system is more often used in which a separate short circuit is provided for each plug used.

Inoperative coils cannot be disassembled or repaired. It is pointless to correct something in them. If a malfunction occurs, you will need to replace.

How to check the ignition coil of a car with a multimeter

If you use a faulty ignition coil, the motor will not function normally. Without it, you cannot get a spark in order to start the engine. If warning signs are found, it is important to figure out how to check the ignition coil with a multimeter and make repairs.

Other ways to control

Using a multimeter allows you to determine the health of the coil, but this method is not always the most convenient. One of the easiest ways is to install, for example, on a 16 valve engine instead of the questionable coils of the proven ones. If a difference becomes noticeable during use, you can say for sure that the old part needs to be replaced.

On older models, the correct operation of the ignition was checked by trying to get a spark between the electrode of the spark plug and the body. On modern cars, using this method can lead to unpredictable consequences.

If there is no spark in the spark plug, then the coil is not necessarily to blame. It is necessary to check the appearance of the electrode contacts and, if necessary, clean them. They must be clean and dry.

You can check the operation of the ignition system with a spark. To do this, follow these steps:

  • Remove the high-voltage wire from the spark plug.
  • Place it at a distance of approximately 6 mm.
  • Crank the crankshaft.
  • If you can visually observe a spark, then the ignition is working properly. Otherwise, the spark plugs must be cleaned or replaced.

A defective ignition coil must be replaced with a new one, as it cannot be repaired. If there are deviations from the standard parameters, then during further operation this can lead to increased wear or breakdown of other components.

Verification recommendations

Many novice motorists are interested in learning how to remove the ignition coil, because the procedure must be carried out with a dismantled device. It is worth knowing about the main types of problems that arise during the operation of this module.

Stage. visual inspection

The bobbins of different cars may have different looks, but the basic type of equipment is still the same. The following parts can be clearly distinguished: housing, two pins, cover and center terminal.

Visual inspection is aimed at identifying mechanical damage to the device. That is, the car owner must carefully examine the body and try to find cracks, burn-throughs or chips. But since the coil has an ebonite body that does not allow current to pass, the cause of the malfunction should be looked for in the winding.

The third stage is checking with a multimeter

Here we will directly figure out how to check the ignition coil with a multimeter.

Ignition Coil Testing with ohm meter for small engines. Briggs-Tecumseh. How To

Diagnostics of the tumblr electrical circuit

  • Before proceeding with the check with the device, you need to open the latch and disconnect the wires from the tambler (there is a coil in it).
  • Set your multimeter to measure voltage.
  • Apply one contact of the device to the reel terminal and the other to ground (for example, a car body).

Look at the readings of the device. If the ignition coil is in good working order, then the panel will display 12 Volts or an indicator corresponding to the technical documentation of the vehicle. If the voltage is zero, then there is a problem with the tumblr’s electrical circuit.

Possible signs and causes of breakdown

The ignition coil converts the low voltage from the battery and generator to high voltage and directs it to the spark plugs. In the latter, a spark appears, which ignites the fuel. This node is considered the leading one in the launch system, and its breakdown can immobilize vehicles for quite a long time.

What are the signs of damage to the electrical transformer:

  • the inability to start the car engine, while the battery has a sufficient charge;
  • the vehicle dashboard shows an error;
  • misfires are periodically observed;
  • the coil heats up much more than under normal conditions.

If the car owner noticed such changes in the operation of the car, then most likely the cause will be a malfunction and you should know how to check the ignition coil with a multimeter.

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For what reasons can this be observed? Most often these are mechanical damage, regular overheating, poor quality candles, as well as the negative impact of the external environment. For example, after strong heating and vibration during operation, the insulation is damaged. The latter leads to a short circuit in the coil windings. If the candles installed in the car do not differ in quality, the high-voltage type wires are overloaded and a winding break occurs.

There are two ways to test the functionality of an electrical transformer: creating a spark between the spark plugs and the case, and using a multimeter. In modern cars, the former can lead to unintended consequences on the part of the electronics. Therefore, it is worth using the specified device to diagnose the operability of the bobbin.

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How to check the ignition coil with a multimeter: instructions

Experienced car owners with minimal knowledge of mechanics divide the process into three main stages: preparation, visual inspection and diagnostics using the device. You can take the car to the service and entrust the process to professionals. But, having a multimeter, the car owner will be able to perform the check on his own. In addition, such a process will be useful for understanding how the car works.

Major malfunctions

It is quite easy to find the device in old cars, because it was installed in the field of view of the motorist. If you start searching from the central conductor of the ignition distributor, then there will be no problems. You can also quickly find individual coils, most often located above the candles.

However, in some models, it may be difficult to remove them, since first it is necessary to dismantle some of the structural elements of the power plant. Thus, first of all, it is necessary to determine the location of the desired element, and only then understand how to check the ignition coil with a tester.

Among the main signs of malfunction of this module should be noted:

  • There is no spark and the engine cannot start.
  • The power plant troit during operation and this is especially noticeable at high humidity.
  • During computer diagnostics, misfire was found in some cylinders.
  • Recessions in traction are observed when the accelerator pedal is depressed.
  • The power plant hardly starts up “idle” and, first of all, at low air temperatures.
  • Serious overheating of the device is observed.
  • Conductors matching the device have changed color.

Often, vehicle owners are partly to blame for problems with this element. Wanting to save money, many decide to use non-standard spare parts. If we talk about the most common malfunctions, then we can note:

  • Reverse battery polarity.
  • Frequent overheating of the coil.
  • Short circuit electrical wiring.
  • Mechanical damage to the device.
  • Sharp temperature fluctuations.

Operating principle

The coil is an indispensable component of the ignition system of all gasoline-powered cars. In conversations, motorists often refer to the component as a bobbin, another possible name is the original small electric transformer.

The main feature is that it is, in fact, a converter for changing low voltage to high voltage (battery and generator are involved).

The data on how to ring the ignition coil with a multimeter does not lose its relevance, since without this part, the engines cannot work stably. If the mechanism breaks down completely, the motor will not start at all. Although this is extremely rare, there are a number of exceptions, in particular:

  • Overheating occurs, increased voltage acts, which leads to damage to the insulation. Even small short circuits can occur at the winding points.
  • If the spark plugs fail, a reboot is triggered by the high-voltage wires, which leads to an interruption in the process.

How to check coils with a multimeter

For the procedure to be consistent and successful, it is worthwhile to study in detail a number of special videos, if there is absolutely no experience in carrying out such manipulations. Only then can you start practical action. It must be remembered that carelessness, ignorance and inability can not only ruin the coil itself, but also the device of the entire engine. Then you will have to spend a lot of time and finances to eliminate the problems that have arisen.

Ignition coil types

If we take into account their purpose, then we can distinguish contact and non-contact coils. If there is no distributor in the car, then the coil definitely belongs to non-contact. But if there is special equipment. breaker contacts, then we are talking about using a contact ignition system.

Taking into account the number of installed candles, devices can be general or individual.

The insulation of the windings is also not the same, in particular:

  • Oil filling. The casing consists of a metal base for winding insulation, transformer oil is used. If the tightness is lost, the device becomes unusable. If oil leaks, turn-to-turn electrical breakdowns of the windings are obtained (after all, they have no protection).
  • Dry (filling with compound).

Verification process and rules

Considering all of the above, information on how to check the ignition coil with a tester is of great value. There are two types of checks:

  • using a spark between the spark plug and the car body;
  • multimeter application.

As soon as there is minimal instability in the motor, check the coil immediately. About twenty years ago, both techniques were widely used.

But in the age of modern technology, the first type is recognized as dangerous, because not the coil itself can stop functioning, but the entire engine (this is due to the peculiarities of modern cars).

If you decide to check it yourself, first of all make sure that you have a multimeter (tester). This measuring device has an important feature: it monitors the voltage while simultaneously monitoring the resistance level.

Tester selection

Specialists from car workshops often use the MAS 838 modification devices. They provide the ability to measure a regular microcurrent of 200 µA. The display has a backlight, which means that you will not need to use a flashlight when working in a room with insufficient lighting to obtain the necessary information.

Specific precision is not required to trigger the process itself. Therefore, there is no need to buy expensive models for personal use. Standard basic equipment. the ideal solution for the do-it-yourselfer.

The non-contact ignition system operates while the magnet is rotating, thus supplying an alternating current. The device can operate over a wide temperature range.

The system itself is located in the space under the hood. Calling her is very simple. touching the wires.

How to check the ignition coil with a multimeter

It often happens that the car cannot start, even if the battery is completely infected. Car owners are at a loss as to the cause of the problem. However, not everyone knows that the first step is to carefully check the coils. They can be tested in different ways, using different devices and devices. Therefore, it is important to understand how to check the ignition coil with a multimeter.

Professional testing

You will need professional grade equipment. The optimal solution would be to set aside a separate stand for testing the coils. So it will be possible to set different speed modes to the rollers, carrying out simulations of different types of work.

When interacting, it is necessary to ensure that the spark is constantly maintained, regardless of the operating mode. Before checking, you need to make sure that this power supply is connected correctly, otherwise you may receive inaccurate data, which will interfere with the determination of problems.

The coil is a small piece of vehicles. Even small deviations from normal performance can lead to serious engine problems.

How to check the ignition coil on a walk-behind tractor?

Most often, this important element of the ignition of the walk-behind tractor is checked using a known working test sample. If during the testing process it turned out that with the installation of the sample everything began to work as it should, then the standard ignition coil of the walk-behind tractor is faulty.

However, not everyone has a test sample at hand. If it is not there, then you need to try to check the built-in coil in other ways. Before that, you need to exclude any breakdowns that may appear in the start button and high-voltage wiring. In addition, the user should carefully study the wiring diagrams. which indicate the location of the elements of the ignition system.

Further verification methods include:

  • measuring the resistance of the built-in ignition coil. It should be noted that it is not always used by users of agricultural machinery. First, the operator must know the exact parameters of the resistance created by the standard coil. Secondly, in addition to the inductance coil, the design of the ignition system includes semiconductor components required to generate the required electrical impulse. Problems with all these elements can only be detected when they are heated. To properly check the ignition coil, you will need to disconnect the cap and the standard armor wire from it. Knowing the exact parameters of the resistance of the built-in element, the operator will be able to understand which part of the system is faulty;
  • checking the spark being created using a special device. it must be connected to the place where the electrical circuit breaks between the high-voltage wires of the standard coil and the candle;
  • testing the coil with a plug built into the structure. for this you need to unscrew the built-in plug and carefully attach it to the cylinder with its body. Then you need to pull the starter handle and pay attention to the spark that forms between the factory plug contacts. It should be noted that this method of checking the existing coil is approximate. in this case the spark plug is not under load, which is why there is no compression in the internal combustion engine cylinder. As a result, the standard engine flywheel will rotate faster.

Each of these methods gives rough information about the condition of the ignition coil. It must be remembered that you can find the exact cause of a part’s malfunction using specialized testers, which are only in specialized workshops.

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How to set the ignition on a walk-behind tractor. execution algorithm

From time to time, a single axle tractor needs an ignition system adjustment. Untimely adjustment of this unit will lead to accelerated wear of other, no less important mechanisms of the agricultural machine. In order to be able to independently adjust the ignition system on a diesel walk-behind tractor and its gasoline counterpart, you need to study the design diagrams of this unit.

A properly tuned ignition system of a walk-behind tractor is capable of creating a spark in the right place and at the right moment for this. In this case, the magneto cover is responsible for the distribution of the formed spark, and its lower part is responsible for the interruption of the spark. In order for the ignition system to work exactly according to this principle, it should be adjusted.

The ignition is installed in the following order:

  • First you need to check the operation of the flywheel available in the engine until the contacts located inside the magneto open;
  • After that, it is necessary to measure the distance between the “anvil” and “hammer” built into the ignition system;
  • Next, you need to turn the flywheel until the piston is compressed;
  • As soon as the flywheel reaches the highest point, it must be turned again. As a result of this, a one-time knock will be heard, indicating the operation of the overrunning clutch available in the design;
  • After that, the flywheel will need to be turned counterclockwise so that the second mark on it converges with the mark located on the body;
  • The next step is to adjust the distance between the breaker contact and the adjacent cam. The minimum for the correct operation of the ignition system will be a gap between the parts of 0.25 mm, and the maximum. 0.35 mm;
  • At the end, it remains to secure the built-in cam with a special screw located on top. The video will tell you how to properly configure the ignition system on the walk-behind tractor.

The performed ignition adjustment will speed up the start of the walk-behind tractor engine and make it smoother, which will lead to a slowdown in the wear of the piston group and other important elements of the motor of an agricultural machine.

How to check the ignition coil on a walk-behind tractor

One of the main units in the design of the walk-behind tractor is the ignition system. It is responsible for the formation of the spark required to instantly ignite the fuel mixture. The ignition system of a modern walk-behind tractor has a fairly simple design, which allows you to set up or repair the unit yourself. However, for this, the correct procedure must be followed, otherwise there will be a high risk of breakage of system parts.

How to set the ignition on a walk-behind tractor?

The following signs will prompt you to urgently adjust the gap in the ignition system:

  • the need for frequent unsuccessful pulling of the starter cord;
  • late reaction of the walk-behind tractor engine to manipulations with the starter;
  • complete lack of starting the internal combustion engine of the agricultural unit.

Each of these faults indicates that the operator must install the ignition of the walk-behind tractor used on the farm. The correct procedure for this can be found in the operating instructions for the existing equipment. However, the operator’s manual is not always at hand. In this case, the gap between the built-in ignition module and the flywheel can be set in the following sequence:

  • First, the operator must cover the candle with a special square;
  • Then its body will need to be pressed against the head of the standard internal combustion engine cylinder;
  • Next, the candle must be turned in the opposite direction from the hole provided in the end of the chrome-plated cylinder;
  • After that, it is necessary to carefully turn the crankshaft of the engine of the walk-behind tractor. for this it is enough to pull the cord of the starting mechanism;
  • As a result of the actions performed, a bright blue spark should slip between the built-in electrodes. If this does not happen, then it is necessary to check the distance between the magneto and the starter of the walk-behind tractor. it should be from 0.1 to 0.15 mm. If these requirements do not meet these requirements, the gap between the elements will need to be adjusted.

Many experienced users adjust the ignition of a household walk-behind tractor by ear. Both contact and non-contact magneto are suitable for this. To configure the system yourself, you must:

  • Start the engine and slightly loosen the standard distributor;
  • Slowly turn the breaker in each of the possible directions;
  • Achieve the maximum speed of the factory engine and quickly secure the structure;
  • Listen and find the moment at which a spark instantly appears;
  • Turning the breaker, wait for a clear clicking sound;
  • Fix the standard distributor fasteners.

In some cases, a stroboscope will help to correctly adjust the available gap.

  • Warm up the power unit of the walk-behind tractor;
  • Connect the device to the power supply network of the agricultural unit;
  • Install the sound sensor on the high-voltage wire connected to one of the cylinders of the standard internal combustion engine;
  • Carefully remove the vacuum tube and plug it with any available means;
  • See where the strobe light will be directed. it should “look” towards the standard pulley;
  • Start the engine and leave it idling;
  • Scroll the distributor;
  • Once the marks on the built-in pulley align with the mark on the cover of the device being used, turn the nut of the factory breaker all the way.

Each of these methods is suitable for adjustment on both a gasoline and a diesel walk-behind tractor. The main thing in the self-tuning process is not to remove the coil and other elements of the ignition system. this can lead to a malfunction of the entire unit.


Many people on the farm have walk-behind tractors and motor-cultivators, which greatly facilitate work in the garden. So I have such a unit. It was acquired back in the distant 90s and all this time served me with faith and truth, everything was, as they say, in the teeth. And I, in turn, tried not to offend him. So we lived with him in perfect harmony.

But lately the uniaxial tractor has suddenly become worse to start. It took a lot of effort to revive the engine. I began to figure out what was the matter. Suspicion fell on the ignition system. the spark was too weak.

After surfing the Internet, I read a lot of tips and settled on one. So a weak spark may be due to aging of the magnets attached to the flywheel of the engine. As they rotate, the magnetic field crosses the turns of the coils attached to the body, which leads to the appearance of an electric current.

No spark

This is one of the typical malfunctions of the walk-behind tractor ignition system. The most common reasons for this are spark plug deposits or spark plug breakage. In this case, unscrew the candle and carefully inspect its side and central electrodes. If the spark plug is covered with carbon deposits formed as a result of flooding the part with a fuel mixture, then cleaning the spark plug alone will not be enough. you will need to check the fuel system pipes of the walk-behind tractor for leaks. Examples of cases of highly contaminated spark plugs are clearly visible in the photo.

If the spark is gone, then in any case, you will need to thoroughly clean the candle. To do this, it is best to heat it over a gas burner, and then scrape off the dried fuel from the surface. After cleaning the part, put the tip on its upper part and bring it to the motor block of the walk-behind tractor. The plug must be held so that its electrode is about 1 millimeter from the motor housing. In this case, with the second hand, try to start the motor of the walk-behind tractor.

If the candle is completely serviceable, then a spark is formed in its lower part, which will jump out and hit the motor housing. If this does not happen, then you need to inspect the distance between the side and central electrodes. A blade should be placed between them, and if it fits snugly between the two electrodes, then the gap is of the optimal size. If the blade is loose, then you need to knock with any hard object on the back of the center electrode. As a result of this, it will shift, after which you need to try again to start the engine of the walk-behind tractor.

Self check magneto for walk-behind tractor

Another important element of the walk-behind tractor ignition system is magneto. In the event of a malfunction of the unit, it also lends itself to a close inspection for operability. Checking the magneto of the walk-behind tractor is quite simple. To do this, it is necessary to clean the candle from the carbon deposits accumulated on its surface and make sure that it is working properly. Then a cap with a serviceable drive is put on the candle. Next, the lower part of the candle must be brought to the magneto body, and begin to rotate the flywheel located in the motor with your fingers.

If a spark does not appear in the magneto on a uniaxial tractor, then the element is out of order. In this case, it will be necessary to replace the magneto of the ignition system of the walk-behind tractor in order to prevent wear of the other mechanisms of the unit.