The lawn mower is unstable. The engine does not gain momentum or does not hold them

What to do if a gasoline lawn mower is faulty?

Any lawn mower for a long, good operation requires proper operation and maintenance. But, even, observing all the rules of use, unforeseen situations occur, which can lead to a breakdown of technology mechanisms.

With insignificant malfunctions, the user can handle it independently, but with more serious breakdowns it is better to give the tool to professionals to the service center.

In this article we will tell you how to figure out what has broken in a gasoline lawn mower. We will tell you how to fix the malfunction on your own, and in which cases it is better to contact a specialist and avoid problems in the future.

The gasoline lawn mower is not started

If a gasoline lawn mower is not started, you must check:

When identifying a malfunction, carefully inspect the technique. It is necessary to check the fuel tank, air filter, muffler of the lawn mower. Clean the candle and re.connect the wire, set the throttle control lever in another position and the ignition switch.

If the lawn mower did not work out, we perform the following actions. Inspect the spark plug, it must be unscrewed. Check the presence of compression. Take your finger to the place of the candle, press the electric start button or pull the starter handle depending on the lawn mower model. If you have not felt the movement of air with your finger, then there is no compression and there are problems with the engine.

It is better not to correct complex breakdowns yourself if you do not have the necessary experience and practice. You should contact the TMK Service Center Tool, where you will always provide the necessary assistance and quickly eliminate any malfunctions.

What to do if the engine does not start?

If the lawn mower fails is not possible, then the first thing is to check the presence of fuel in the tank and its quality. For refueling the tool, it is recommended to use high-quality gasoline purchased at gas stations, the brand of which should not be lower than the AI-92. Savings on cheap fuel can lead to a breakdown of the cylinder-piston group, for the repair of which a third of the cost of Motokosa itself can take

It is equally important and correctly preparing a fuel mixture of gasoline and oil. The proportional ratio of these components of the mixture is indicated by the manufacturer in the manual

Do not prepare the fuel mixture in large volumes, since during long storage its properties are lost. It is better to use a freshly prepared mixture.

When preparing the fuel mixture, pour the oil into gasoline using a medical syringe that allows you to accurately comply with the necessary proportion of the components

Fuel filter pollution in the tank may also prevent the operation of the lawn mower engine. Therefore, when problems with the launch of the motor, check the condition of the filter. If necessary, replace the filter. It is forbidden to leave the incoming pipe without a fuel filter.

The air filter also needs to be in the test. During contamination, the part is removed, in the field is washed in gasoline and put in place. In the country or at home, the filter can be washed in water using detergents. After that, the filter rinses, squeezes and dries. The dried filter is moistened with a small amount of oil used to prepare the fuel mixture. Excess oils are removed by compressing the filter with hands. Then the part is installed in place. The removed cover is placed back and fixed with screws.

The air filter washed in the fuel mixture, squeezed and dried, is installed in place in the plastic case and covered with a lid

How this procedure is done in more detail you can look at

If all of the above procedures are carried out, and the engine is not started, then adjust its revolutions at idle, twisting the carburetor screw

In the video posted at the beginning of the article, attention is paid to this issue

  • Put the tool on the side so that the air filter is at the top. With this location of the chainsaw, the fuel mixture is ensured exactly into the bottom of the carburetor. On the first attempt, the engine will start if you remove the air filter before starting and pour a few drops of the mixture into the carburetor, and then install the dismantled parts to the place. The method is tested in practice.
  • If the first advice does not give a result, then, most likely, the problem in the spark plug. In this case, unscrew the candle and check its performance, as well as dry the combustion chamber. A candle that does not show signs of life, replace the new.
  • If the spark plug is in good condition, the filters are clean and fuel mixture, then you can use the universal way of starting the engine. Close the carburetor air damper and pull the starter handle once. Then open the damper and pull the starter 2-3 times. Repeat the procedure from three to five times. The engine will surely start.

Some pull the pen with such force that it is necessary to repair the starter of the lawn mowed with their own hands. This is possible only in the case of a gust of a cable or breakdown of the cable handle. In other cases, it is recommended to replace the starter. This node is sold in the collection.

Electric lawn mower will not start or stall

Sooner or later, many are faced with the exit of the lawn mower. This happens, as a rule, after 3-4 years of active operation or after the device was stored in the winter in a non-heated room.

Problems with the engine arise over time for all devices, regardless of whether a simple “Chinese” or an expensive “Japanese” stand on it. The moment is unpleasant, but you should not be upset, just as you do not need to rush to the service center. You can try to carry out repairs yourself.

The most common problems

Here are the most common malfunctions:

  • the engine does not start;
  • The motor stalls arbitrarily;
  • The engine does not gain momentum or does not hold them;
  • Immediately after the start of the mowing, the engine speed falls and it stalls or works with interruptions;
  • smokes strongly;
  • It goes badly;
  • does not stop even after the operator released the wheel drive lever;
  • shakes hard;
  • Poorly cut the grass.

Buy a new riding mower for 2k? Forget it

The engine does not start

There are quite a lot of reasons why the motor does not start:

  • empty fuel tank;
  • a air filter is clogged;
  • a muffler is clogged;
  • The ignition switch is installed in the wrong position or faulty;
  • The air damper control lever is in the wrong position;
  • faulty candle;
  • broken or clogged carburetor.

Primary inspection

To establish the real cause of this defect, you must first conduct a full external inspection and make sure that the openings of the air filter or muffler are not clogged, there is gasoline in the tank, and the throttle control lever and the ignition switch are in the correct position.

If everything is in order with this, then it is necessary to carry out pre.launch work, including cleaning air or fuel filters, described in detail in the instructions for the operation of the mower, and then try to start again.

After making sure that the motor still does not start, the mowing is placed on the table and proceed to a more detailed search for the reasons.

First, the spark plug is twisted and tightly plug the candle hole with your finger, then smoothly, but quickly and strongly pulled the hand starter cable or pressed on the electric launch button.

The moving piston should create sufficient air pressure so that it pushes the finger and goes outside. If this does not happen, then the motor needs serious repairs, which is difficult to make at home, so it is better to take the mower to a specialized workshop.

After all, the reason that the piston does not move after the starter’s cable or rotating the shaft of an electric starter may be:

  • Damage to the starter, because of which he does not transmit the energy of rotation to the engine shaft;
  • The cut off the flywheel that connects the flywheel and the starter with the engine, and also provides the correct ignition angle.

To eliminate both malfunctions, not only tools, but also skill are needed, so those who do not have the skill of repairing any engines are better not to try to eliminate such problems on their own.

Further check

If the piston moves, then you must first check the fuel supply, for which the candle is thoroughly wiped with a dry clean rag, then screw it into place, and the regulator of the position by the air damper is placed in the “OFF” position, as during the start of the engine.

After that, the fuel is pumped up (if the engine design provides) and twitch the hand starter cable several times or pressed on the electric starter button and hold it for 1-3 minutes.

Then, the lever of the air damper is transferring to the “ON” position and the candle is unscrewed, which is carefully examined.

Wet contacts indicate that gasoline enters the engine and the problem of ignition, and dry contacts say:

In both cases, knowledge and equipment are necessary for proper diagnosis and repair, therefore, it is better to take the device to repair the apparatus to a specialized workshop.

If the fuel comes, then it is necessary to check the external condition of the ignition coil and the high.voltage wire. If they have cracks or poor contact as between the wire and the coil, so at the place of connection of the wire with the candle tip, they must be replaced.

If everything is fine, then you need to check the spark, for which you can use both a deliberately serviceable candle and a bolt suitable in diameter, which is inserted instead of a candle in a high.voltage wire.

The operations described below, if they are performed with errors, can damage the ignition coil, so if you are not sure that you can do everything right, then it’s better not to take risks and entrust such a check to professionals.

The candle is leaned with threads against the ribs of the engine cooling shirt, and the bolt is placed so that it does not come into contact with the mowing case or its engine, and the distance from it to the cooling shirt was 1-2 mm.

After that, disconnect any wire going to the ignition switch, then pull the lever of the manual starter or press the electric button and see if the spark will appear.

If there is no spark, then the device does not start for one of the reasons:

For the repair of these damage, skills and equipment are needed, so those who do not have them are better to trust professionals. If there is a spark, then the problem is in the spark plug, so after replacing it will work.

The motor stalls arbitrarily

The most frequent reasons why the engine stalls during operation are:

  • Dirty air filter;
  • Dirty fuel filter (only for models with a fuel filter);
  • faulty ignition switch (does not completely open the ignition circuit);
  • damaged insulation of the ignition shutdown wires;
  • faulty air damper drive;
  • the tightness of the ignition coil is broken or its winding is broken.

The primary inspection is performed in the same way as described in the previous section. If everything is fine outwardly, then carefully examine and feel all the wires suitable for the switch that blocks the operation of the ignition system, is possible somewhere damaged and when contacting the naked metal of the case, there is a short circuit that extinguishes the spark.

If the insulation of all wires has no damage, then the wires are disconnected from the switch and check the engine. normal operation without spontaneous shutdown suggests that the switch must be replaced, if the problem has not disappeared, then the search for its causes continues.

A gasoline lawn mower is a complex motorized equipment that needs proper timely maintenance and periodic repair.

Now you know what malfunctions can independently eliminate most of the owners of gasoline lawners and how to do it, and in which cases it is better to contact the workshop.

Other frequent breakdowns

Steel bases usually work several seasons without defects. If small cracks appear, then they are eliminated using a welding machine. In the same way, defects are removed on the handle and engine frame. If the base has cracked and a large crack appeared, then the element is replaced with a new. As a rule, the replacement of the base is accompanied by the replacement of vibro shutters, which are installed between the engine and the working surface.

Another question that may arise during the operation of the unit: “Why is the clutt of vibration plate warm?””. The reason for this may be the excess of engine speed, compared with the value specified in the instructions, or other violations of the operating rules.

The reasons why the direct.flowing plate does not move forward, and models with reverse do not make movements forward/back, can be:

  • Lack of fuel;
  • absence, low level or poor oil quality;
  • belt break;
  • overheating that arose due to clogging of air holes, poor quality oil.

Users often ask the question of why the belt is torn. Unfortunately, for rubber belts, this is a common occurrence. The most functional are models in which a steel synchronizing circuit is installed instead of the belt.

lawn, mower, engine, does

How to fix a lawn mower that starts but then stalls right away

The masters of the service center equipped with modern diagnostic and repair equipment will be able to accurately determine the place and causes of the malfunction of a direct.flowing or reverse vibro.plate and qualitatively eliminate the problem.

The main malfunctions of electric trimmers

The reasons why the electric lawn mower does not start and does not work are divided into two main categories. mechanical and electric.

In the first case, the causes of breakdowns can be:

  • Blocking knives when trying to mow too hard grass or shrub. In this case, the cylinder is freed from stuck grass and scroll through the other way.
  • Blunting or damage to knives. Knives sharpen or replace.
  • Incorrect location of the knives, leading to deterioration of equipment handling, reducing the quality of work. The problem is corrected by regulating the gap.
  • Vibrations and rattling of the device due to weakened bolted joints. Bolter compounds regulate.
  • In models with fishing line, problems with a trimmer reel are possible. A trimmer fishing line may end, break off or get confused.

Electric malfunctions:

  • The reason that the electric gas mobility stalls immediately after starting or during operation, may be a break in the supply cable or the disappearance of power supply in the network.
  • The electric trimmer for the grass is very warm and can smoke. Overheating of the engine and its probable failure can be caused by too long work or overload, which occurs due to blocking the cutting elements with any extraneous objects. Sparking and the appearance of smoke can be triggered by incorrectly selected brushes or their incorrect location.
  • One of the reasons why the electric lawn mower is not starting is the malfunction of the control button.

The most common breakdown of motorcycle

The malfunctions of gasoline devices can also be divided into two main types. engine breakdown and mechanical plan problems.

Problems with a gasoline engine:

  • If the lawn mower does not start, starts poorly or immediately stops, then first of all, the ignition is checked, for which it is necessary to dismantle the candle. If it is dry, then problems in the fuel supply system, if wet, are problems with the carburetor. Candles with black soil replace. Also, the cause of this malfunction may be filter clogging. In the presence of oil in the air filter, it is washed, squeezed and dried.
  • If the gasoline trimmer for the grass smokes, then the cause may be too much oil in the fuel-oil mixture. White or grayish smoke indicates an too intense engine operation and a lack of lubrication, blue. the excess of oil content, thick black. about poor.quality old fuel.
  • The reasons why the lawn mower is warming up is a few. This is gasoline of inadequate quality, inappropriate oil, improper ratio of gasoline and oil, problems with a carburetor, air filter, insufficient lubrication of individual nodes.
  • The gasoline trimmer for grass stalls at large speeds. Causes-etching of air in the combustion chamber, improper adjustment of the carburetor, clogging of the saapon in the fuel tank cover, poor circulation of the fuel-oil mixture due to blockages in fuel pipes.
  • Benzotrimmer does not work at idle. This problem may occur due to improper control of the carburetor or clogging of the air filter.

Mechanical breakdowns. locking knives too hard and long grass, failure of knives, weakening of fasteners.

It is possible to accurately determine the place and causes of a breakdown of an electric or gasoline trimmer for grass and quickly eliminate it only in a specialized service center. Due to the availability of modern diagnostic and repair equipment and great work experience, experts will be able to cope with the problem of any complexity. Masters will not only repair a fairly new tool, but also restore the working characteristics of old models.

The main malfunctions of the lawn mowers and benzotrimmers.

Often they ask the question of the main malfunctions of motorcycle and lawn mowers. Unfortunately, most often malfunctions arise due to incorrect operation and lack of maintenance. Of course, there is a factory marriage and wear, but more often the equipment fails through the fault of the operator. I know people whose braids for grass for five or more seasons and, in addition to planned maintenance of other attention, these braids do not require grass, although they work quite actively. Therefore, you need to make it a rule, in the season at least once a month, better more often, the braid needs to be washed and lubricated, serviced. Use only fresh fuel mixture, shelf life of the fuel mixture of no more than three months.

Husqvarna lawn mower with the Briggs Stratton engine, very reliable, resource equipment. I acted with a diagnosis: the starter does not turn.

She apparently got it in this life: they are stored on a braid on the street, they pay attention to the minimum, only to work. The braid was transported on its side and the oil fell into the cylinder, it turned out to be a hydroclin. so the crankshaft does not turn. Lawn mowers with a four.stroke engine can be transported only in a standard horizontal position.

We put a new candle, run, the braid for the grass will smoke for some time until all the oil that has entered the cylinder and exhaust.

After the smoke has stopped, soak and drain the oil, put on the side, sharpen the knife, fill the new oil, serve the carburetor, in which there was sand and water, we change the air filter. I hope she will be better.

Another copy from Husqvarna, this time with the Honda engine, a real revolutionary model. Front.wheel drive, large rear wheels. all this allows you to work on not very even lawns. I acted with a diagnosis. it is not moving forward, there is no clutch, crushes grass, poorly mows.

A very convenient mechanism of the transition from the worker to the transport position, the handle folds in literally two movements.

The cause of the malfunction is a drive mechanism clogged with grass. It is amazing that she generally tried to move. Clean and blow out the compressed air drive mechanism.

The reason that the lawn mower is crushing and poorly mows the grass may be a dull knife, or the height of the mowing is incorrectly chosen. Smoot the knife. To choose the right mowing height. user task.

In benzotrimers, drive shafts, gearboxes, adhesion most often suffer from excessive load. It is important to install a fishing line for a trimmer and knives recommended by the manufacturer, to take technological breaks. The second common malfunction is damage to the cylinder-piston group (CPG) due to insufficient or lack of high-quality lubrication in the fuel mixture. Fuel mixture storage for three months.

During transportation, an air filter was broken off, after which the user worked for some time without a filter. Bottom line-destruction of the cylinder-piston group. The cost of repair 3/4 of the cost of braids for grass.

Why do engines smoke

Power, which drives a two- or four-stroke engine of the lawn mower, comes from explosions in the combustion chamber. Like all combustion reactions, these explosions require oxygen, and when there is not enough air and incomplete combustion, fuel, which does not burn, turns into soot carbon deposits. They are either blown out of the final hole in the form of black smoke, or gather on the terminals of the spark plug, which protrudes into the combustion chamber. An engine that produces a lot of black smoke usually does not work at full power, and, in the end, carbon accumulates enough on the candle to prevent ignition and starting.

If your lawn mower produced black smoke and now does not start, you can usually start it again, cleaning or replacing the spark plug. Remove the spark plug lid, unscrew the candle with the end key and inspect the terminals., If they are covered with thick deposits, remove deposits with sandpaper or file, if you have a horse riding mowel or a mowing with a four.stroke engine, and you see wet oil deposits, you may be worn out by the lingel oil as a lingel oil. You can run the engine by cleaning or replacing the plug, but smoking will continue until you repair the seal.

Restore the air flow

Another reason for the lack of air in the combustion chamber. Dirty air filter. You must regularly clean this, but it’s easy to forget to do it, and when the filter is polluted, it passes the air. The filter is easily available, and the procedure for its removal and cleaning depends on your lawn mower. Many air filters are located on the side of the gas mowing engine and are enclosed in a plastic box held in place with a screw. Some filters are disposable and should be replaced, while others are washed with water with soap. Paper filters can sometimes be cleaned by blowing them with compressed air, and foam filters can be washed again. The muffler can also clog and limit the flow of air leaving the combustion chamber. Remove and clean the soot with a wire brush or replace it. In order to avoid burns, give the mower and muffler completely cool before shooting.

Small engine carburetors have two or three adjusting screws. one for adjusting the velocity velocity and the other one or two to adjust the air ratio of the air. When the engine produces black smoke, this may be due to the fact that the low-speed screw marked by the letter “l” on most cars is too open. Find adjusting screws that are often under an air filter, and turn a low.speed screw for 1/4. 1/2 revolution clockwise using a screwdriver to create a more liquid fuel mixture when you make this setting, you will probably notice that the engine is better because it burns fuel more efficiently.

Visual inspection

Before working with any faulty device, you need to conduct a visual inspection. one that does not require a complete disassembly of the device. Agree: it is much easier, for example, to check the battery of the phone, the screen of which sharply stopped working, attaching it to the power, instead of completely disassemble the display, check the train, etc. D. So:

  • First of all, we check whether the required amount of gasoline is available inside the motor. If the reason is this, then the rest of the actions do not need to be performed (and so similarly with each paragraph).
  • We look at the possibility of gasoline or oil. You need to do this in good lighting or just use a flashlight.
  • We look at whether the motor has external deformations.

Engine problems

Common reasons and ways to solve.

Frequent problem. air filter pollution. Take it off. If without it the motor starts to work better (this can be determined by sound), then the reason is found. If when the hand is closed with the hand, the engine reduces the speed, then this additionally confirms that the case is in the filter pollution. It is recommended to replace it with a new. You can also clean it with a vacuum cleaner or rinse thoroughly with a rag using a dishwasher or the same soap. The main thing is a thorough subsequent drying. After you need to very carefully grease the filter with oil and leave it for half an hour to absorb.

If the engine works, but reduces the moment, perhaps the blame for the ignition. The problems with this element are also evidenced by a large fuel consumption. You can check it using a special “gun”, which is sold in any automobile store. To do this, insert the candle into the hole. If after that there is no spark, then the element does not work. you just need to buy a new one and replace.

Check the sapun. This is a part of the engine that serves to maintain the same pressure in the gas tank. If it clogs, then, most likely, a vacuum will be created, which prevents the fuel further. To check, you need to dismantle it, and then close the hole with your palm in which there was a saopan. If there is no pressure, then the matter is in it. After cleaning the bacon yourself, mount it back. If the motor has not started to work, it may be in the rings. They should be checked using a compressometer. Before checking, warm the power unit: if there is not enough atmosphere, we change the ring.

Fairy tap breakdown can also indicate problems with the engine. Its deformation is very easy to see with an external examination of the part. If it is broken, replace it. To check, first of all, you need to disconnect the spark plugs wire and fix it away from the candle itself. Remove the casing, unscrewing the bolts. Install the filmmaker of the flywheel, remove it with the veneer. If deformation is detected, the spare part is replaced.

If the motor starts up, but immediately stalls, then this may indicate a damaged insulation of the ignition system. So, touching the metal of the case, the current passes further, there is a closure that extinguishes the spark.

The problem can also lie as fuel. First of all, you need to check if there is an excess of oil, then. gasoline itself. On the fuel in no case should be saved! You can check its quality in three ways:

  • By color. To do this, pour fuel into a small transparent jar. If at the same time the color of gasoline is pale yellow, then it is in perfect order-exactly the one that is needed is chosen. If the shade is different, it can talk about cheap impurities. They quickly spoil the engine, which means that it will have to be taken to the nearest service center.
  • Consists in the use of potassium permanganate. We also pour into a jar, dilute with potassium permanganate. If the fuel quickly repainted pink, this means that it has a large amount of water that should not be.
  • Drip a little gasoline on a sheet of paper. Wait a couple of minutes: if it has not completely evaporated, and the paper changed its color, impurities are present in the fuel.

If the lawn mower smokes strongly, this may also indicate gasoline prepared for two.stroke engines. The next time you just need to choose it wisely, and before that it is worth changing the spark plug.

If the shaft does not rotate, then the problem in the “oil starvation” is a lack of oil in the engine. In addition, insufficient oil is used. To repair the crankshaft, a complete dismantling of the pallet should be carried out. You need to replace the bearings. Additionally, it is recommended to clean the channels if there is dirt in them. She can also negatively affect the lack of oil to lubricate parts.

If the candle is wet, problems with the carburetor are possible. When wear out gaskets, they should be changed. You also need to rinse it by partial disassembly. First remove the air filter and cover. After we extract all the contaminated elements, completely wash them so that they look like new. After we collect everything back. Details must be soaked in cleaning liquid, which can be bought in the store. It is also permissible to replace it with clean gasoline or kerosene. If necessary, the carburetor can be blown.

The above recommendations in most cases help to cope with a trimmer malfunction. However, it should be noted that it will simply simply be given the device to the service center.

The lawn mower does not start or stalls?

Many owners of gasoline lawn mowers sooner or later face technical problems of this technique. Most often, problems arise after three to four seasons of active operation of the lawn mower or after the equipment spends the winter in an unexplored garage. These problems are manifested as follows:

  • The lawn mower will not start
  • The lawn mower starts up, but soon stalls
  • The engine of the lawn mower is working with interruptions
  • The engine of the lawn mower does not work at full power

It doesn’t matter what engine is on your mower: dear Japanese Kawasaki or a simple Chinese Lifan, during the years of operation these problems are more likely to appear in all lawn mowers. However, do not be upset and rush to take your mower to the service center. In the vast majority of cases, the lawn mower can be easily repaired with your own hands. In this material, we will tell you step by step how to do it!

We identify the cause of the malfunction

To repair the lawn mower yourself, it is best to be guided by the principle of “from simple to complex”. First, check if there is enough gasoline in the tank. If the mower stopped starting after wintering, it is worth draining the old fuel and replace it with a new. Sometimes low.quality gasoline comes across, which can give a precipitate or even delay in the winter, and some gas mowers are very sensitive to fuel quality.

lawn, mower, engine, does

If there is confidence as gasoline, but the lawn mower does not show signs of life, the next thing you need to do is check the spark. To do this, remove the wire with a cap from the candle and twist it with a special candle key, which should go with the lawn mower. Then throw the cap on the candle, attach its threaded part to the metal part of the engine and ask someone to pull the starter. At this moment, a bright blue spark should appear, which is clearly noticeable even during the day. Keep in mind that you need to lean the candle against the clean metal surface of the engine, which is not covered with paint and which can be current.