The lawn mower began to mow the electric. The self -propelled lawn mower is bad…

REPAIRS AND REPAIRS OF APPLICES

Lawn mowers are a convenient equipment that allows you to maintain in the country, in the garden, the park of herbal cover in a well.groomed state. Thanks to their use, lawns acquire an attractive appearance with minimal labor and time. Gasoline and electrical devices that have pushed to the background are popular with the popularity of mowers.

With proper operation, the equipment is capable of working for more than one year without breakdowns. But over time, the details wear out or an unforeseen accident may happen, as a result of which the unit will fail. If the equipment is not under warranty, then it is not necessary to contact the service center for help to specialists. Repair and maintenance of lawn mowers can be carried out at home. This is due to the fact that many malfunctions do not relate to serious breakdowns, they can be easily eliminated on their own.

The main malfunctions of electric and gasoline lawn mowers

Despite the variety of models and manufacturers of lawn mowers, gasoline and electric equipment has similar structural units. The difference lies in the types of installed engines and related systems for ensuring performance. Equipment malfunctions are conditionally divided into 2 groups:

lawn, mower, began, electric, self

Damage of the mechanical part of models with gasoline and electric motors is almost the same, but the refusal when operating the drive part of the lawn mower can be caused by problems with different details.

Repair of the lawn mower

Faced a partially faulty electric gas mowing Al-ko. When turned on, it worked properly, but as soon as a small bump or unevenness came across, it turned off. When re.turning on, the situation was repeated again. At the same time, the longer the lawn mower worked, the more often it turned off.

On examination, it turned out that to increase the safety of operation of the lawn mower, the circuit breaker was made with protection. To turn on the lawn mower, first you need to press the button and then pull the red lever to the metal pipe-handle and hold it during the mowing process of the grass. Judging by all signs, the malfunction was in the switch node.

Since it is difficult to high.quality repairs in the field, I decided to remove the switch unit and understand the reason for unstable work in the workshop. To do this, it was enough to unscrew two self.tapping screws.

From the circuit breaker’s unit was a cable into the gas mowing housing. An attempt to disassemble the circuit breaker unit to disconnect it from the cable was unsuccessful. The head of the screw had a trihedral slot, which provides only for its tightening. It is impossible to unscrew such a standard screwdriver.

Dismantling the lawn mower

I had to unscrew the lid on the housing of the lawn mower, under which the cable went on the side. But here, too, was awaiting difficulty. The screws of the screws were hidden in the depths of the secret holes and were tightly clogged with grass with the ground. After cleaning the heads of garbage, it became clear that they were designed for a cross screwdriver, but all attempts to unscrew them with such a screwdriver were unsuccessful.

Managed to display them with a screwdriver with a flat sting. It turned out that the center of the Schlitsov was raised and the cross screwdriver did not fully enter the engagement. Another protection against independent disassembly.

After removing the lid, it was found that the cable was recorded by four self.tapping screws of the same size, but with normal slots. Therefore, to exclude difficulties in unscrewing the lid in the future, rusty screws that previously hold the lid were twisted into cable clamps.

After many years of work, a lot of mowed grass accumulated inside the lawn mower, which wrapped the connectors and the start.up capacitor. I had to remove it to continue the repair.

After cleaning the lawn mower, access appeared to the connectors. To dismember the connector coming from the switch, it was enough to take the latch with a flat screwdriver to the side.

In the lawn mower, an asynchronous single.phase electric motor was installed, not having a collector and brushes. Thanks to this, there is no need for regular maintenance of the lawn mower. This lawn mower for ten years refused for the first time.

And then another malfunction was discovered, which did not show itself. When checking the freedom of rotation of the engine rotor by influencing the impeller, it turned out that it was not fixed on the shaft and easily starred.

The surface of the engine’s holes on the engine shaft was smooth. It seems that when spent, the knives fell on the branches, stones and, as a result of repeated jerks, the plastic of the impeller was cut off.

For reliable fastening of the impeller, the engine shaft was wound in one layer of a strip of a medical patch on a fabric base with a protrusion for the end of the shaft for 5 mm. Then, through a wooden gasket by blowing a hammer, the impeller is planted on the shaft. The landing was quite durable.

The breakdown of the circuit breaker unit in this case turned out to be good, since due to wear of the impeller mounting, the engine could burn out due to overheating and I would have to buy a new lawn mower.

How to make repair of the lawn mower with your own hands?

Those who have land are very familiar with what struggle is weed.

Especially when it often rains and the grass grows not by the day, but by the hour. Earlier, and sometimes even now, this issue was resolved with the help of a good old braid for grass.

But technologies are not standing still and now in this case, assistants such as electric and gasoline lawn mowers help.

The gasoline mower has several significant advantages over electric, such as mobility and lack of danger of electric shock. But there are many drawbacks, for example: high price, a lot of noise, expensive fuel and significant weight.

Electric mowers are cheaper, easier, work on inexpensive energy, and are not difficult to maintain and repair. These advantages become the main reason for their great popularity among buyers of this type of technique.

But despite the pretty good quality, improper operation and a lot of load, they can disable the device. In such cases, you should not immediately carry the device to the repair shop, but try to find and eliminate the cause of the breakdown yourself. over, as mentioned above, electric lawnmands do not have as many nodes and details as gasoline.

The main thing is to have some tools and faith in yourself. In this article, I will just show you how I did my own repair.

AL-KO, the lawn mower of the company, has serious problems in work, namely: the engine stop without load and its strong overheating, was taken as an example. The motor stops, buzzes and start it again, only re.pressing the “Start” button helps. The button has to restart almost every 30 seconds, and with further work and more often.

Of course, you can work, but it is very annoying and gives the feeling that somewhere the problem is. Therefore, I wanted to figure out where?

After the mower was working within an hour, the engine temperature was measured. It was impossible to touch him with a finger. He directly radiated heat. If you continue to pay attention and continue to work on such a mower, an electric motor will inevitably fail.

It is necessary to determine the cause of the motor overheating. To do this, remove the top cover of the case, under which the engine is located and its power chains.

The lid is held on six screws with a hat under a cross screwdriver.

Unscrew these screws and remove the lid. upward.

Having removed it, you can see the impeller, the capacitor, two connectors and the engine itself.

At first glance, no special problems are invisible. The engine winding darkened slightly from the temperature, but so far it is not critical.

To more carefully inspect the capacitor, it is necessary to unscrew the mount and pull it out.

The capacitor of some external damage did not show.

To check it, you need to disconnect the capacitor and feed the engine for a short time. If he did not start and began to buzz, then the capacitor is intact, because the engine was launched with him. Disconnect the power and connect the container connector back to the engine circuit.

Next, try to twist the impeller. It is mounted on the axis of the rotor and rotates rather tight.

And the reason for such severe rotation is a mechanical brake, which for safety stops the engine rotation when the power is turned off.

It looks like a sleeve that moves freely from top to bottom, along the rotor axis.

Когда напряжение на двигатель не подано, эта втулка прижимается верхней частью о крышку, на которой приклеено две резиновые полосы. Thus, the knife is inhibited on the rotor shaft.

When feeding, the brake sleeve under the influence of the magnetic field is drawn to the center of the rotor and provides free move.

With a careful examination, this sleeve with the brake noticed that at the time of turning on the engine, the brake is retracted and gives the shaft free rotation, but after 2-3 seconds it is released again and begins to slow down the motor. This should not be. Hence the stop of the knife during operation and overheating of the engine.

To find out what is the reason for this work, you need to remove and disassemble the engine.

To do this, disconnect the connectors and put the device on the side to get to the clamping screws. Access to them closes a knife with mounting elements.

To remove it, first you need to unscrew the knife bolt (cm. Figure below).

Direction of rotation, like a regular bolt, and not with left thread. That is, unscrew it counterclockwise, and tighten the clock.

Snapper XD 82v Self Propelled Lawn Mower

The head of the bolt is plastic, so using the key, it must be well planted so as not to “lick” the edge.

After extracting the bolt, the knife and its plastic disk are removed.

Under it is a height sleeve. With its help, you can slightly lower the knife.

Adjustment is carried out by the washers put under the sleeve (see. drawings below).

We remove everything, only the engine shaft and the hexagonal screws of its fasteners remain.

The key for these bolts has a distance between faces of 6 mm. Unscrew them counterclockwise. Removing the last screw, with one hand, hold the engine.

Next, put the mower on the wheels, and clasping the engine with our hands. we raise it.

To disassemble the motor, you need to free tightening studs. We unscrew them all.

Remove the impeller with two screwdrivers.

lawn, mower, began, electric, self

We proceed to the removal of the back cover. A wooden block and a hammer will help this.

But first you need to mark the position of the covers with something sharp to the engine body.

Put the engine on the side and hit with a hammer, through a wooden gasket, on the rear shaft.

The motor at that moment should hold another person.

We hit until the axis comes out of the bearing to the end.

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.

The lawn mower was out of order if:

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.

Repair of the mechanical part for all types of lawn mowers

Regardless of the type of engine, the mechanical part of the braid braid includes knives, the ejection or accumulation device of mowed grass and the transmission mechanism. Most often, knives come out or end the fishing line for a trimmer.

Cleaning the mechanical part of the Bosh lawn mower

Damage or bending of knives is visible to the naked eye. Depending on the material and the degree of damage, the knives are replaced or restored by simple bending into the original state. With severe wear, the cutting part can be submitted. DIY trimmer’s lawmaker, made with your own hands, can fail for many reasons. Most often, this is an excess of the maximum permissible load for torque and the engine, since a knife is used instead of a fishing line.

Restoration of the handle of a trimmer for grass

When examining, check the condition of the air duct for the supply of grass to the container and, if necessary, clean it. complex mechanical breakdowns require a complex tool, special equipment, professional skills and elimination of such malfunctions is better to entrust professionals.

Why is the gasoline trimmer not starting for the grass

The reasons why the gasoline trimmer for the grass stopped starting is different, therefore, a phased diagnosis of the apparatus is required.

Fuel tank (fuel quality)

Remember that always before starting the unit, a check of the presence and quality of fuel is required. In this case, you should not be greedy and save, as well as “clever” about the amount of oil added. Everything must be done according to the management attached to the apparatus, since when the piston group fails, its replacement will cost about 70% of the total cost of the trimmer for the grass. Pour fuel due to the fact that you will fully conside it when performing work. After a while, the gasoline remaining in the tank loses its properties and can harm the engine. Therefore, do not prepare the mixture for the future and in large quantities. If the lawn mower starts poorly, try to drain the “old” fuel from the tank, and season it with a freshly prepared mixture.

Important! To refuel the device with fuel, the origin of which is unknown, fraught with negative consequences. Gasoline should be of high quality, bought at a gas station, and its brand should be not lower than AI-95.

Candle and candle channel

So, you changed the fuel, but nothing has changed, and the trimmer for the grass still does not start. In this case, it is worth checking the candle channel: whether it throws it with a combustible mixture. Often users transfer the air damper to the “OFF” position when starting, and when the engine started, they do not transfer it to the “ON” position, after which it stalls. Further, an attempt to start the internal combustion engine to again leads to the fact that it floods the candle with gasoline, and the start becomes impossible. To diagnose and eliminate the possible problem in this node, do the following.

  • It is necessary to unscrew the spark plug, wipe it well and dry it. When installing a candle in the ICE cylinder, it should be dry.
  • Draw from the combustion chamber the fuel accumulated there. This is done through the hole from which you twisted the candle.
  • In the presence of soot on the electrodes of the candle, it must be removed either with a thin file or a nail file.
  • Do not forget to put the gap between its electrodes before installing the parts in place. The gap on the candle should be 1 mm. As a probe to check the gap, you can use a coin.
  • Next, collect the block, read the start instructions and try to start the engine again.

If the engine does not start, then you will need to check the spark. For this:

  • unscrew the candle;
  • put on it a cap of a high.voltage wire;
  • Touch its metal part to the cylinder body (to provide contact, you can insert a tubular key) as shown in the figure below;
  • pull the launch cord so that several engine speeds occur.

Normally, with each piston roll between the electrodes, the candle should slip a spark. If there is a spark, then the reason that the internal combustion engine is not launched should be sought in other nodes of the device.

For a better understanding of the process, how to test the candle for the presence of a spark, you can use this video where the check is shown by the example of the Lawn Mushiel “Soyuz”.

If there is no spark, then in the beginning check the cable connecting the candle to the coil. perhaps the reason is in it. You can call it with a tester. In case of detection of the rupture of the chain, a high.voltage wire will require a replacement.

Also the reason that the spark has disappeared is a malfunction of the ignition coil (magneto). The figure below shows what the coil (magneto) looks like from the gasoline trimmer for Patriot grass (Patriot).

To exclude the malfunction, it will be necessary to use a tester to check the Magneto trimmer for the grass, namely, its primary and secondary winding. On the primary winding, the resistance should be in the range from 0.4 to 2.0 Ohms. If the device shows 0. this means that there is a short circuit in the winding, and if infinity is a clear sign of a chain break. The resistance on the secondary winding should be in the range from 6 to 8 kOhm.

On some coils, it can reach the value of 15 kOhm.

Air filter

If your lawn mower does not start well or stalls immediately after starting, you should pay attention to the air filter, since it can be clogged, as a result of which the air does not enter the combustion chamber, and fuel ignition does not occur. To check if the filter is the case, remove it and try to start the engine. If he earned, then the reason was found. The filter needs to be replaced or rinse well and dry before installation. In the case when you find the oil in an air filter, it must be washed with gasoline, squeezed well and dry at least 2 hours before installing in place.

If the unit does not start with an air filter, it is still recommended to check the fuel filter.

Fuel filter

This filter cleans fuel of possible pollution. If it is scored, then gasoline does not enter the cylinder, and, accordingly, the unit does not work or stalls after starting. The fuel filter is located at the end of the fence hose, which is located inside the fuel tank. To get to the filter, it is necessary to extract a cork with tubes emerging from it.

lawn, mower, began, electric, self

When extracting traffic jams, a fence hose can disconnect and stay in a tank. It is extracted with a tweezer.

Next, remove the old fuel filter from the hose and put on it a new, pre.acquired. You can also clean the fuel filter if you do not have new. The filter must be fixed on the hose using a spring latch.

Install the fence tube on the cork and insert the last into the tank.

Electric trimmer for grass vibrates

Many mowing users noticed that some time after the start of the apparatus, it begins to vibrate very much. On some trimmers, mainly in models more expensive, an anti.vibration system was installed in the form of shock absorbers seized between the engine and the bar. But in some cases, even she does not save from strong vibration. The reason that strong vibration appears in the trimmer, there may be a small amount or complete absence of lubrication on a hard or flexible shaft located inside the rod of the apparatus.

Replacing the lubrication of the hard shaft is as follows:

  • Apply a small amount of lubrication to the shaft and evenly smear it along the entire length of the part, including the slots at the ends of the rod (if they worked, the shaft will have to be replaced);
  • After lubrication, insert the shaft back into the bar and put the gearbox in the same place.

The lubrication of the flexible shaft is as follows:

  • unscrew and remove the mowing head;
  • remove the bar from the electric motor by unscrewing a couple of bolts;
  • Pull out a flexible cable from the bar;
  • Lubricate the cable with grease along the entire length.

This is done like this: first you need to lubricate the end of the cable, and then insert it into the bar, after which, as it moves into the pipe, you should apply grease to the part and evenly distribute it on the surface. Then insert a bar with a flexible shaft into an electric engine and fix it.

In the event that the lubricant did not help, and the vibration continues to appear, you will need to change the flexible shaft.

How to determine the cause of the failure?

Repair should begin on the principle of “from simple to complex”, that is, it is recommended to start repairs by checking the presence of gas in the tank. If the gasoline engine stops after wintering, replace the fuel.

Unfortunately, fuel does not always have worthy quality. Therefore, during a long.term downtime, it can be distinguished or precipitated. And engines are sometimes very sensitive to fuel quality.

Read Electric Lawn Mushiel which video to choose

If there is no doubt about the latter, but the lawn mower does not start, it is necessary to check the spark, disconnecting the wire with the cap from the spark plug, unscrewing it using the attached key.

Attach the spark plug to the clean metal surface (without painting) of the engine, first putting the lid on it and asking someone to pull out the starter.

If an unstable and weak spark appears, the candle must be cleaned with a file or sandpaper.

Another problem that is easy to eliminate. This is a clogged fuel hose. They check this, turning it off: if the fuel does not flow, the filter or the inside is clogged. The filter will need to be replaced, the inside can be cleaned using a needle.

Well, if after that the mitch earns. However, the cause of a malfunction in 90% of cases lies in another. Carburetor malfunction that needs to be repaired. You can deal with repairs with sufficient experience. In his absence, you will need the help of the service center.

Problematic issues with a carburetor and fuel system

Before starting repairing the engine of the lawn mower, it is worth checking if the pistons lay down. To do this, it is necessary to dismantle the motor. We also remove the carburetor from the structure and conduct visual control for the availability of possible defects. Usually in disassembly you will need a special Torex screwdriver with nozzles.

Combined Torex reverse screwdriver with nozzles

We inspect the gaskets for the identification of ruptures or burning. If one is found, then you need to ensure the tightness of the structure, replacing them with new. The air damper may contain a layer of soot, which reduces the quality of the fuel mixture. You need to get rid of the cleaning of the carburetor by raining the node in the solvent or kerosene.

lawn, mower, began, electric, self

Sloving during operation or the absence of a set of them to enter the operating mode together with the overheating of the power unit are the causes of such events:

  • Idle adjustment violation. You can unscrew the nozzles yourself with a screwdriver into the right position. It will be possible to do this even by ear, so that the motor works smoothly. No need to shoot knives, but they should not rotate.
  • There is an air filter pollution. It is enough to extract it out and clean, rinse. We dry in natural conditions in the wind, without putting a stove or fireplace.

Air filter casing is removed with a flat screwdriver

After removing the cover, the air hose is also carefully removed

Remove the lid of the fuel chamber of the carburetor and clean it. An ordinary Weadshka is quite suitable for this, but you can buy a special liquid

To clean the fuel chamber, first wipe it WD-40, then soak mines at 15-20, wiped again. So you need to repeat 3-4 times to completely clean the camera and channels

After purging, the carburetor is assembled and returned to its place

BEFORE YOU BUY A BATTERY POWERED LAWN MOWER, WATCH THIS!

The clog of exhaust leads to a narrowing of the output flow of the exhaust pipe. Resins appear on the inner surface due to the incorrect ratio in the composition of the fuel mixture and oil. We twist the crankshaft so that the piston comes out to the maximum up and clean its surface with a wooden stick.

In more serious cases, it is recommended to contact the warranty service. Otherwise, unprofessionalism will bring more breakdowns. over, with independent search for a malfunction and repair during the warranty period, the guarantee ceases to.

Device

All electric lawns are arranged the same. They have a platform for mounting a motor whose shaft is parallel to the ground. A knife (or two) is fixed on the shaft of the electrical device, with which weeds mush. To make the mowing high.quality, the speed of the cutting electrical tool should be high.

The platform itself for convenience is supplied with four wheels and a handle with the elements mounted on it that control the engine. It is designed to push the device forward and control an electric mower.

Wheel fastening can be stiff and be rotary. In the first case, you will have to raise two wheels in the corners. Rotary ones provide for the use of lower physical strength.

In addition, they “spoil” the lawn less. Therefore, if flowers are planted on the lawn, there are swings, arbors, etc.D., it is recommended to use rotary wheels. Electric lawns with such wheels are convenient for caring for areas under shrubs and trees.

The engine is closed by a case that simultaneously protects from injury by random objects of an operator working with an electric lawn mower. The material used for its manufacture is more often plastic and less often. metal. As you can see, the device of the electric municipal mower of the electric is quite simple.

Types of mowers for a walk.behind tractor

, A detailed description of which will be given below:

Each type of technology has its own characteristics and is designed to perform a certain complexity work.

Rotary

  • Electric.The advantage of such a device is noiselessness, environmental friendliness. The mechanism is quite light, has a low cost, easy to operate. The downside of the instrument is its binding to the outlet or other power source. As a rule, such mowers have small power. The electric device may suit the owners of small lawns.
  • Gasoline.With such an unit, no thickets and territories are afraid of you. The braid has high power, it has no binding to the power source. The disadvantages of the model include great weight, noise when working and, of course, exhaust gases.

Did you know?The simplest mower. a trimmer for grass, was invented in 1971 in the USA, Texas. To make the right choice between two types of lawn mowers, you need to think well for what purposes you need an apparatus, what areas you plan to process.

Segmented

If you need to get rid of high grass, you should use this particular type of haying

Thanks to the segmented knives and the features of the apparatus, the cutting of the grass occurs smoothly, which allows it to evenly lay it on the surface. The power level of this type of device ranges from 3 to 6 horsepower. A similar technique has a capture width up to 120 cm. Separate models can be equipped with special mechanisms that allow you to work at 7 speeds.

The device is able to overcome weeds, the thickness of the stems of which is up to 3 cm. Due to the availability of adjustments, you can set a mowing height parameter. Several types are distinguished

  • stepped: it is necessary to set a specific height of the proposed;
  • smooth: it is possible to choose a height included in the limits established by the manufacturer.

Important!Protise yourself before using the mower: check whether the bolts on which knives and discs are fixed are well tightened. This type is the most interesting. It can be safely called universal, since the characteristics allow you to use the tool in summer and winter. In the winter season, the mower will easily cope with the functions of the snowman. Using such a tool, you can mow hard grass and remove the ice crust.

Safety precautions when working with a gasoline mowing

Each manufacturer in the operating instructions for its lawn mower describes in detail how to turn it on, what can and what can not be done with this device in order to avoid injuries or breakdowns.

The basic safety rules when working with lawnmands are the same as using another motorized garden technique, that is:

  • It is impossible to neglect daily inspection and timely maintenance, because this will lead to a decrease in the resource of parts and aggregates of the lawn mower.
  • You can not serve the device or mow grass after taking alcohol, drugs and any substances affecting the reaction rate, balance and adequacy.
  • Children cannot be allowed to work with a mowing without adult supervision.
  • It is undesirable to use the apparatus for mowing grass, the height of which is more than 5 times higher than the maximum mowing height, for such vegetation it is necessary to take either a special lawn mower or use a trimmer for grass.
  • It is undesirable to use the lawn mower in cluttered areas due to the high probability of a knife impact on a solid obstacle.
  • You can not turn or tilt the mower to a complete stop of the knives.
  • You can not smoke or use open fire during service or refueling the device.

Device

All electric lawns are arranged the same. They have a platform for mounting a motor whose shaft is parallel to the ground. A knife (or two) is fixed on the shaft of the electrical device, with which weeds mush. To make the mowing high.quality, the speed of the cutting electrical tool should be high.

The platform itself for convenience is supplied with four wheels and a handle with the elements mounted on it that control the engine. It is designed to push the device forward and control an electric mower.

Wheel fastening can be stiff and be rotary. In the first case, you will have to raise two wheels in the corners. Rotary ones provide for the use of lower physical strength.

In addition, they “spoil” the lawn less. Therefore, if flowers are planted on the lawn, there are swings, arbors, etc.D., it is recommended to use rotary wheels. Electric lawns with such wheels are convenient for caring for areas under shrubs and trees.

The engine is closed by a case that simultaneously protects from injury by random objects of an operator working with an electric lawn mower. The material used for its manufacture is more often plastic and less often. metal. As you can see, the device of the electric municipal mower of the electric is quite simple.

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