How to set the ignition on an agro walk-behind tractor

What to do if there is no spark on the walk-behind tractor?

If, after the tests carried out, it turned out that the spark was missing. then the cause of this breakdown must be sought in the main elements of the ignition system of the agricultural unit.

This will require:

  • inspect the candle. it must be turned out using a special key;
  • the spark plug may be completely dry. this indicates that the fuel does not enter the engine cylinder, that is, the fuel pipes are clogged or the carburetor is malfunctioning;
  • in some cases, the part is wet with gasoline and engine oil. The reasons for this are an overabundance of lubricant contained in the fuel, or its seepage from the engine oil sump directly into the cylinder. In this case, the operator must remove the plug and dry it thoroughly. After that, you need to dry the cylinder, several times intensively pull the starter cable towards you on the engine with the spark plug turned out;
  • least of all, due to the lack of correct and timely maintenance of agricultural machinery, a thick continuous layer of carbon deposits and dried resinous deposits forms on the candle of the walk-behind tractor. To rebuild the spark plug, gently heat it up with a lighter and rinse off the resin residue with clean gasoline. After that, the part will need to be dried and screwed into place. If this does not help, then the candle needs to be replaced.

It is important to be very careful when removing, cleaning and reinstalling the spark plug. Any careless movement can damage the electrodes of the part, due to which it will no longer be able to generate a spark.

Magneto for walk-behind tractor. testing at home

Magneto for a walk-behind tractor is a structurally complex element that is in constant contact with high-voltage wiring and interacts with electricity. Due to the operation of the walk-behind tractor in damp weather, accidental shocks and failures in the supply of electrical power, this part gradually fails. It is quite simple to check it for serviceability, but the operator will have to act at his own peril and risk, since the only way to test a part in the field will be very dangerous for the entire ignition system.

To check the magneto of the walk-behind tractor, you will need:

  • On the candle screwed into its regular place, carefully dismantle the cap and insert a small nail in its place. The latter must be clean with no signs of corrosion;
  • The nail should be installed at a distance of 7 mm from the cylinder wall of the standard cylinder of the power unit of the walk-behind tractor;
  • Start the engine of the agricultural unit;
  • Check for spark when starting the engine. It should be bright blue and clearly visible. If it is not, then the magneto is out of order.

ignition, agro, walk-behind, tractor

If the magneto breaks down, it will need to be replaced. You can do it yourself. removing the faulty one and installing a new part.

Ignition of motoblocks

Ignition is a mechanism responsible for the formation of an electrical impulse required by the walk-behind tractor to ignite the fuel being refueled. The first start and subsequent operation of the agricultural unit engine depends on the health of the ignition system. Like the rest, this mechanism needs regular maintenance and timely repair. this will be the key to stable operation of the internal combustion engine under any weather and operating conditions.

Walk-behind tractor ignition device

The ignition system belongs to the list of the most important components of both a branded and a homemade walk-behind tractor. Its main function is to generate a spark, which is needed for the ignition and gradual combustion of fuel in the chrome-plated cylinder of the internal combustion engine.

The simplicity of the factory assembly of the unit allows you to perform your own repair of the ignition of the walk-behind tractor. which, most often, consists in setting a gap between its elements. However, to do this correctly, you need to study the construction of the knot.

The ignition device of any agricultural agricultural unit includes a coil, which is initially connected to the electrical power supply of the system, as well as a magneto and candles. During the start of the power unit of the walk-behind tractor, voltage is applied, as a result of which a pronounced spark is formed between the magnetic “shoe” and the standard candle. It is necessary for instantaneous ignition of the fuel, which at this moment is in the combustion chamber of the engine. details about the structure of the ignition system of the used walk-behind tractor will tell the photo.

The electronic ignition system of the walk-behind tractor is also often equipped with breakers that are triggered automatically when any of the unit malfunctions occurs. This leads to an emergency power outage in the network.

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 testing 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.

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.

To configure you need:

  • 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.

Useful videos

Different branded walk-behind tractors produced by well-known brands differ from each other in the design of the built-in ignition system. To know how to properly adjust this important element, we offer a video. which contain the correct procedure for setting up the ignition system on the most common models of walk-behind tractors.

For motoblocks of the Neva brand:

For models of the Agro brand:

For agricultural units produced by the Ural brand;

For motoblocks Mole:

BCS “Free wheel devices”

For Bison models:

For motoblocks of the Salute brand:

For agricultural units Honda:

For the lineup produced by the Kaskad company:

For motoblocks of the MTZ brand:

Modernization of the ignition switch of the Agro walk-behind tractor

The proposed scheme is intended for the repair or modernization of the ignition of the Agros walk-behind tractor. Also, this design can be used to work with scooter motors, boat motors, etc.

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This circuit differs from the previously published ones by the increased voltage on the charging capacitor by 2 times and the spark duration increased above 1.2 ms.

Electronic switch circuit.

The switch is assembled on a breadboard, did not make a seal.

I used the Zhiguli B-117A as a coil, but you can use any other, including my own.

After installing this ignition, the spark when cranking the engine with a manual starter became quite greasy, even with a not very strong jerk, there are no spark gaps. This is due to the fact that even at low start-up speeds, the charging capacitor has time to charge to a voltage sufficient to form a good spark.
Stronger and more stable spark makes engine starting easier.

In the minus, it starts up well?

Honestly, there have been no downsides yet, but I hope that it will start normally.
So far I tried it only at 5. it started normally. Although this is not an indicator, the minus was small and short-lived, in reality the walk-behind tractor probably did not cool down to this temperature.
But in any case, the spark cannot be compared with the one that was on the standard unit. On the regular one, at first I even thought that there was no spark, then I hardly found it, and here on the candle there is a thick and bright spark. It won’t get any worse.
That’s why I left the venture with e-mail for now. a starter, I want to see if it will not be needed if it starts up well.

alldn. we will try to collect and test

If you tried. then this one differs in only three details. You can make a small scarf with these details, connect to that switch and see the difference.

Please tell me. coil for capacitor and conventional (transistor) ignition systems, in principle
different. You say there is no difference. How to do it right?

nospin. Basically they are the same. Transformer with two windings. And in the number of turns, they probably differ. Although, as I said, both will work.
In the old Soviet times, we did ignition with a blocking generator and a storage capacitor, put an ordinary coil and everything worked without problems.
In this ignition, the next version of which I published, the voltage across the capacitor and, accordingly, on the coil reaches 400 volts when operating at medium speed and the coil transfers this easily and without problems.

Gravely Walk Behind Tractor – Assembling the Wico XH Magneto

Here is a waveform of the coil voltage. Vertical division 100 volts.

If you are interested, do it and do not hesitate.
This is the final switch.
There are thoughts for the future, but this is already in terms of adjusting the UOZ, in terms of power and duration of the spark, there is nowhere to go further.

alldn wrote:
nospin. Basically they are the same. Transformer with two windings. And in the number of turns, they probably differ. Although, as I said, both will work.
In the old Soviet times, we did ignition with a blocking generator and a storage capacitor, put an ordinary coil and everything worked without problems.
In this ignition, the next version of which I published, the voltage across the capacitor and, accordingly, on the coil reaches 400 volts when operating at medium speeds and the coil transfers this easily and without problems.

Here is a waveform of the coil voltage. Vertical division 100 volts.

If you are interested, do it and do not hesitate.
This is the final switch.
There are thoughts for the future, but this is already in terms of adjusting the UOZ, in terms of the power and duration of the spark, there is nowhere to go further.

alldn. Well done!

Ignition of motoblocks

Ignition is a mechanism responsible for the formation of an electrical impulse required by the walk-behind tractor to ignite the fuel being refueled. The first start and subsequent operation of the agricultural unit engine depends on the health of the ignition system. Like the rest, this mechanism needs regular maintenance and timely repair. this will be the key to stable operation of the internal combustion engine under any weather and operating conditions.

Oil and fuel

  • oil in the engine. for air-cooled carburetor, according to the season, for example, SAE15W / 30;
  • gear oil. SAE80 / W90;
  • fuel. gasoline AI-86, 90;
  • lubricants. Litol-24, synthetic grease, fatty grease.

Device and diagram of a walk-behind tractor, engine

Components of the Agro walk-behind tractor:

  • reversible steering rod;
  • two-wheeled chassis;
  • engine (attached to the body of the clutch control mechanism);
  • power train.

Placed behind the engine:

  • transmission;
  • Transmission;
  • clutch;
  • main gear;
  • differential with blocking;
  • final transfer;
  • PTO.

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

From time to time, the walk-behind tractor needs adjustment of the ignition system. 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 configured ignition system of a walk-behind tractor is capable of creating a spark in the most necessary 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, which is 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.

Ignition 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.

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 the walk-behind 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.

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

Check and, if necessary, repair the ignition coil, follow the same principle as the magneto walk-behind tractor.

The following factors indicate that the ignition coil of the walk-behind tractor is out of order:

  • weak spark or its complete absence;
  • there is a smell of molten plastic in the area where the ignition coil is installed;
  • the appearance of a cracking sound when trying to start the walk-behind tractor.

In any of these cases, you will need to carefully inspect the ignition coil of the walk-behind tractor. To do this, it is best to completely dismantle it. To this end, first unscrew the fastening bolts and remove the upper cover of the ignition system housing. Then you need to disconnect the high-voltage wire and, carefully prying the coil, remove it from the case. After that, you need to carefully inspect the part for traces of melting. if black spots are visible on the coil, then most likely the current created by it did not reach the candle, as a result of which the ignition coil itself succumbed to the voltage. Especially often farmers face this problem, in whose walk-behind tractors contactless ignition is installed.

The reason that the current did not go to the candle is poor contacts on the high-voltage wire. In this case, the repair of the ignition of the walk-behind tractor is reduced to stripping the wires or completely replacing them. In motoblocks where an electronic ignition system is installed, in the event of a breakdown, the wire is automatically disconnected due to the presence of a special fuse. In agricultural machines with other types of ignition systems, the wire must be disconnected manually in case of a breakdown.

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 node, 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 the walk-behind 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.

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

From time to time, the walk-behind tractor needs adjustment of the ignition system. 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 configured ignition system of a walk-behind tractor is capable of creating a spark in the most necessary 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, which is 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.

There is no spark on the walk-behind tractor. reasons and solution

Ignition 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.

Demo BCS 853 Quick Coupling with Key Ignition

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 on the tip on its upper part and bring it to the motor block of the walk-behind tractor. The candle 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 dangles, then you need to knock with any hard object on the back of the center electrode. As a result, it will shift, after which you need to try again to start the engine of the walk-behind tractor.

Prevention of breakdowns of the ignition system of the walk-behind tractor

In order to avoid the need to repair the ignition system of the walk-behind tractor, you need to adhere to a number of simple rules. Their observance will extend the terms of use of the unit and save time and money for the owner of the equipment.

Experts advise:

  • exclude the use of a walk-behind tractor in wet weather, during the onset of frost, as well as under conditions of sudden changes in temperature and humidity;
  • do not try to start the unit if there is a smell of molten plastic;
  • if necessary, install plates on the walk-behind tractor that will protect the parts of the ignition system from moisture ingress;
  • change the candle at least once every 3 months. In the case of intensive use of the walk-behind tractor, the frequency of replacing the part can be increased;
  • use high-quality engine oil. the use of an unsuitable composition will lead to the constant flooding of the spark plug with the fuel mixture;
  • regularly inspect the parts of the ignition system in order to exclude the slightest possibility of operating a walk-behind tractor with broken wires or other breakdowns;
  • try not to give a walk-behind tractor with a hot engine to heavy loads. this will lead to accelerated wear of important parts of the unit, including its ignition system.

Adhering to these simple rules, the owner of the walk-behind tractor will increase the working resource of the ignition system and other important parts and mechanisms of his unit.

All of the listed problems with the ignition system are typical for motoblocks manufactured by the companies Ural, Krot, Zubr, Agro, Neva, Honda, Salyut, MTZ and Kaskad. Adjustment and repair of the unit is carried out in the same order for each of the listed agricultural units.

Ignition mb 1

What to do if there is no spark on the walk-behind tractor?

If, after the tests carried out, it turned out that the spark had disappeared, then the cause of this breakdown should be sought in the main elements of the ignition system of the agricultural unit.

This will require:

  • inspect the candle. it must be turned out using a special key;
  • the spark plug may be completely dry. this indicates that the fuel does not enter the engine cylinder, that is, the fuel pipes are clogged or the carburetor is malfunctioning;
  • in some cases, the part is wet with gasoline and engine oil. The reasons for this are an overabundance of lubricant contained in the fuel, or its seepage from the engine oil sump directly into the cylinder. In this case, the operator must remove the plug and dry it thoroughly. After that, you need to dry the cylinder, several times intensively pull the starter cable towards you on the engine with the spark plug turned out;
  • least of all, due to the lack of correct and timely maintenance of agricultural machinery, a thick continuous layer of carbon deposits and dried resinous deposits forms on the candle of the walk-behind tractor. To rebuild the spark plug, gently heat it up with a lighter and rinse off the resin residue with clean gasoline. After that, the part will need to be dried and screwed into place. If this does not help, then the candle needs to be replaced.

It is important to be very careful when removing, cleaning and reinstalling the spark plug. Any careless movement can damage the electrodes of the part, due to which it will no longer be able to generate a spark.

Magneto for walk-behind tractor. testing at home

Magneto for a walk-behind tractor is a structurally complex element that is in constant contact with high-voltage wiring and interacts with electricity. Due to the operation of the walk-behind tractor in damp weather, accidental shocks and failures in the supply of electrical power, this part gradually fails. It is quite simple to check it for serviceability, but the operator will have to act at his own peril and risk, since the only way to test a part in the field will be very dangerous for the entire ignition system.

To check the magneto of the walk-behind tractor, you will need:

  • On the candle screwed into its regular place, carefully dismantle the cap and insert a small nail in its place. The latter must be clean with no signs of corrosion;
  • The nail should be installed at a distance of 7 mm from the cylinder wall of the standard cylinder of the power unit of the walk-behind tractor;
  • Start the engine of the agricultural unit;
  • Check for spark when starting the engine. It should be bright blue and clearly visible. If it is not, then the magneto is out of order.

If the magneto breaks down, it will need to be replaced. You can do this with your own hands by removing the faulty one and installing a new part.

Improving the ignition in the walk-behind tractor Mole with your own hands

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Ignition is a mechanism responsible for the formation of an electrical impulse required by the walk-behind tractor to ignite the fuel being refueled. The first start and subsequent operation of the agricultural unit engine depends on the health of the ignition system. Like the rest, this mechanism needs regular maintenance and timely repair. this will be the key to stable operation of the internal combustion engine under any weather and operating conditions.

Ignition mb 1

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 testing 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 electrical diagrams, which indicate the location of the elements of the ignition system.

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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.

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.

To configure you need:

  • 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.

Ignition system adjustment

If the system is configured correctly, a malfunction may not occur. However, such a violation takes place and it is necessary to be able to eliminate it and configure the system. On motoblocks intended for agricultural work in large volumes, there are increased loads, and an untimely or poor-quality ignition installation can lead to equipment breakdown. So how to adjust the ignition on the Agro walk-behind tractor?

Before performing work, carefully study the schematic diagram of the device. The ignition system generates a spark at certain intervals and the position of the pistons. The upper part of the magneto is responsible for its distribution, the lower one interrupts the sparking process. For this, they regulate the system.

In this video you will learn about the ignition unit:

To set the ignition on the walk-behind tractor, you should adhere to the following actions:

  • Checking the operation of the engine flywheel.
  • Open the contacts that are inside the magneto.
  • Measure the distance between the hammer and the anvil inside the system.
  • Turn the engine flywheel to compress the piston.
  • After the handwheel is in the upper position, continue turning further until the moment it clicks. This signal means that the clutch inside the unit has tripped.
  • Reverse rotation of the flywheel and align the mark on the body with the second mark on the flywheel.
  • After carrying out the above operations, proceed to setting the distance between the breaker and the cam. The normal distance should be between 0.25 and 0.35 millimeters.
  • The last step in the adjustment is to lock the built-in cam with a screw located at the top of the unit.

A detailed setting of the ignition system of the walk-behind tractor can be viewed in the video provided on our website.

Important! Correct adjustment of the system will make the engine start more quiet and smooth. Due to this, the pistons and other mechanisms of the power unit of the Agro walk-behind tractor will not wear out quickly.

This is not the only way, there are other adjustment methods:

  • With a spark.
  • By ear with the engine running.
  • Using a stroboscope.

Ignition device on the Agro walk-behind tractor

Auto mechanic specializing in agricultural machinery

Motoblocks have gained particular popularity over the past decade. They really do provide meaningful help to a person on a personal plot. Motoblock structures are capable of a lot. plowing a fairly large plot of land in a short time, planting and quickly harvesting crops, moving heavy loads, taking on the functions of a snowblower and much more.

Motoblocks are a mechanism that sooner or later begins to malfunction. The uncomplicated design of the unit allows you to find and fix the breakdown yourself.

The main types of malfunction of motoblocks:

  • engine breakdown;
  • failure of the ignition system;
  • uneven battery performance;
  • contamination of the carburetor;
  • fuel supply problems.

This machine has a specific list of possible malfunctions.

The task of the ignition system is to generate the spark needed to ignite the fuel in the combustion chamber. Failures in the system are eliminated quickly and easily if you strictly adhere to a certain scheme of actions, otherwise, you can simply harm the correct operation of the walk-behind tractor.

Breakdowns and ways to eliminate them

Several reasons are considered because of which the Agro walk-behind tractor may not work:

  • the candle does not spark;
  • the ignition coil (magneto) is out of order;
  • wiring problem.

It is not difficult to check the candle, it is enough to unscrew it and inspect it carefully. If carbon deposits are present on the walls, this means that the part has been flooded with fuel. Carbon deposits are removed by exposing them to an ignited burner in a gas oven. It is not enough to just clean the spark plugs, you need to check the entire fuel supply system for leaks.

To understand whether the magneto works, a cap with a connected wire is put on the candle from above, and the lower part of the ignition element is brought to the body. Turn the flywheel. If the spark is not visible, the problem must be looked for in the coil. But that’s not all. Be sure to pay attention to the state of the gap between the central electrode and the side one. Take a simple blade and insert it into this gap. If the blade fits securely and tightly, then everything is in order. Otherwise, you should lightly hit the center electrode, after which it will move.

Advice. Purchase candles with a short heat sink path. In practice, it has been proven that such candles do not overheat and last much longer.

Another elementary cause of system malfunction is poor contact of high-voltage wires. They must be removed and carefully cleaned or replaced with new ones. In technical devices with an electronic ignition system, the wire is automatically blocked by a command of a special safety device.

To prevent the ignition system from causing problems, you must follow the following tips, which will help not only extend the life of the mechanism, but also save the car owner’s money:

  • do not work on a walk-behind tractor in adverse weather conditions (wet weather, frost, high humidity);
  • if you smell of burnt plastic, you should immediately turn off the engine until the reasons are clarified;
  • spark plugs should be changed at least once every three months;
  • for the efficient operation of the walk-behind tractor, it is necessary to use only high-quality spare parts and fuels and lubricants;
  • unsuitable engine oil can lead to flooding of spark plugs;
  • conduct a constant inspection of the entire system, right down to the wires.

All faults are of the same type for the ignition systems of agricultural Russian motoblocks, including those produced by Agro. The ignition is adjusted in the same order. It won’t take much time to repair the cultivator’s ignition system with your own hands. The main thing is to identify the malfunction in time. Candles require constant checking, and if this is not done, then you can forget about your powerful assistant for many months.