How to start a trimmer for Parma Practical Grass. For the period of engine running

Repair of an electric trimmer for grass

The electric trimmer for the grass replaced the usual spit. Today, most urban residents do not even know how to use a “rare” tool correctly. A modern person does not need this, because he has an electric counterpart. But if an ordinary braid had to just sharpen from time to time, then things are more complicated with the power tool. Equipment requires a certain care, and if a malfunction occurs, the repair can lead to big expenses. However, it does not always make sense to carry the failed tool in the workshop: often you can cope with the breakdown on your own.

To understand what exactly can break in an electric cost, first you should figure out how it is arranged.

Ethletric trimmer for grass usually consists of the following elements:

The current is supplied to the power unit through the connector on the case, to which the cable is connected. Inside the rod is hollow. it plays the role of a protective shell for a flexible shaft, transmitting torque from the motor to the coil of the trimmer for the grass. The handle located on the case has a button, when pressed on which the device turns on.

The described design is considered a classic. However, there are options for executing the tool in which the motor is located in the lower part near the coil, as well as the battery versions.

Repair of an electric trimmer for grass with your own hands: Frequent causes of breakdowns

One of the scenarios in which the tool is out of order is the mowing of a very neglected area. In this case, the equipment is affected by increased loads and often fails of the power unit. A breakdown of bearings or coils is also possible.

And when work is carried out in rainy weather, electrical equipment can simply close. Also, do not forget about a certain resource of individual assemblies of the tool, which are not designed for constant use. The device requires timely inspection with the replacement of worn parts.

Repair in some cases can be carried out independently, without the involvement of third.party specialists, the cost of which is often considerable.

Repair of the launch button

If the tool does not respond to attempts to turn it on, two options for a malfunction are possible. a cable break inside the handle or the failure of the inclusion button.

Important! Make sure that the device is disconnected from the network if it is a stationary type. In the case of the battery version of the instrument, the power terminals should be first disconnected, and only then proceed to repair.

In order to understand what exactly the breakdown is, you need to disassemble the handle.

Having gained access to the inside, you should, armed with a multimeter, measure the resistance of the button. If it is absent after pressing, the button must be replaced.

You also need to check the contacts of the connection of the power cable with the contact group. Often the need for such a measurement disappears, t. to. The cliff can be found with the naked eye. In this case, it must be eliminated by soldering.

In the absence of a multimeter, the same work can be done using an indicator screwdriver. To do this, after disassembling the body of the power cable handle, it is connected to the network and the phase is checked by a screwdriver before and after the button. If zero comes to the button, the fork in the outlet can be turned and measured again.

Attention! You should be very careful when checking the presence of a phase in this way. There is a possibility of gaining electric shock!

Checking the electric motor

If the button and cable that feeds the tool will be serviceable, you should go to the diagnosis of a power unit. To do this, disassemble the case in which it is located. It is usually necessary to simply unscrew several bolts or screws and remove the lid.

First of all, you need to check the condition of the collector brushes. The wear of this node can lead to unstable operation or to a complete stop of the engine. If the brushes are in satisfactory condition, you should check the winding of the motor for a short circuit.

For this operation, it is necessary to completely remove the engine, and then check all the collector plates in the mode in the mode. The device should not show significant deviations in measurements.

The second check is the “ringing” of the rotor winding to the “mass”. To do this, you need to connect one of the multimeter contact to any collector plate, and the second to the “mass” of the rotor. In this case, the resistance measurement mode should be more than 1 MOM. If there is no short circuit, the device will show a very large meaning.

If, according to the results of these checks, all the parameters turned out to be normal, you need to measure the resistance of the stator winding. Indications should be similar, as in the case of the rotor. If not, then the malfunction lies in the stature.

If there is an interval circuit in the engine, it will not be diagnosed in this way. However, this problem can be identified by observing the trimmer for grass in action. An indirect sign of such a malfunction will be a decrease in the power of the work and overheating of the equipment.

When, as a result of diagnosis, it became clear that the engine was “burned out”, it would be easier to notice it on a new. In the vast majority of cases, repairs, consisting of rewinding, will cost as much as a new power unit.

If the engine is installed on the engine, then it will turn off the power when overheating. If the problem is the malfunction of the relay itself, this can be identified using the same multimeter or tester. With a cold engine in good condition, the relay should pass the current.

Mechanical malfunctions

Such problems include a breakthrough of the flexible shaft. It is easy to recognize it. the motor works, and the coil with a fishing line does not rotate.

The reason for the breakdown is the unfair care of the tool, which consists in the timely lubrication of the inside of the bar. In the absence of the desired amount of lubrication, the shaft will be subjected to excessive friction and the cliff will become a logical result.

This breakdown is corrected by replacing the shaft, which can be removed by disconnecting the upper part of the trimmer for the grass from the bar. If the second part of the shaft is not extracted, disconnection and lower.

When installing a new shaft, it should first be lubricated.

Such a malfunction can occur only with a classic layout of parts. In devices where the power unit is located in the lower part, there is no flexible shaft. However, with such a layout, the role of the gear ratio is played by a bearing located on the engine shaft closer to the place of transmission of the moment. In this situation, the bearing must simply be replaced with a new.

How a two.stroke engine works: briefly, but it is important to know for a clear launch of a lawn mower

Lawn mowers are produced with two.stroke or four.stroke internal combustion engines. The difference in the design is significant, but each model starts on the general principle. I show on the example of the Chinese trimmer for Eco grass.

The engine is called two.stroke because the full.time cycle is two tacts: the stroke of the piston from the upper dead point of the VMT to the lower NMT. In this case, the launch occurs with the second achievement of the upper position.

Similarly, chainsaws, boat engines and gasoline tools of another similar technique work. Consider the procedure. We are supposed to figure it out.

To start a trimmer motor for grass, we pull the starter’s cord. Its stretching is spinning a crankshaft with a flywheel creating the moment of inertia. The rotation of the crankshaft shaft is converted into the reciprocating movement of the piston.

The two.stroke motor has 4 working cycles:

• The first movement of the piston from the VMT to the NMT is accompanied by the injection of the fuel mixture (gasoline with butter and air), when the carburetor inlet valve opens under the influence of the created vacuum;
• The movement of the piston from NMT to the VMT: the intake and exhaust valves are closed, and the working mixture is compressed in a sealed volume;
• Both valves remain closed. At the upper dead point of the piston through the contacts, the spark slides through the contacts.There is an explosion of compressed gases. Its strength with an impulse throws the piston down and rotates the crankshaft through the connecting rod;
• The force of inertia of the flywheel directs the piston from the NMT up: the exhaust valve opens and through it the combustion products are pushed into the exhaust pipe.

All stages are performed automatically, but they are prepared by a person with his actions. When making errors it is made, the benzotrimer does not start and may break.

I try to make out all these points in more detail.

Cycle: what mistakes of beginners lead to breakdown of the engine of the trimmer for grass and exclude its normal operation

6 common mistakes with fuel

The manufacturer in the instructions clearly indicates the brand of gasoline with an octane number, oil and their proportions.

The first three errors are that the user of motorcycles violates all or one of these requirements. The motor will most likely start and work, but its resource may decrease sharply.

A small amount of oil, like its absence, will lead to the fact that the walls of the cylinder will not grease normally, and the piston rings will scratch them, and not slide.

Excess oil will simply burn, forming soot. She will pollute everything, including the piston and cylinder.

Failure gets into the valve, blocks their work, after which the motor will not start.

Will have to disassemble and clean the carburetor, or even put a new. Of course, you can try to wash the piston and the cylinder: it may be possible to bring them into working condition, but it is better not to bring them to.

The fuel mixture must be prepared with high quality and in strict proportion. The repair of a spoiled engine is expensive, about 70% of the price for a new gasoline trimmer for grass.

For the preparation of high.quality fuel mixture, I have a special container with a factory division of divisions in a set of trimmer for grass. Gasoline is neatly poured into it to the level of 500 ml, and then the oil to the required label.

An alternative method is the preparation of a fuel mixture with filling gasoline into a calibrated container, for example, a liter canister or a plastic bottle to a label, and an oil additive with a medical syringe according to its divisions.

The dosage with a syringe is more convenient, is considered the most popular way.

I recommend filling gasoline through a funnel with a narrow neck that has a filter: a metal mesh. protection against small garbage.

The prepared mixture should be well shaken and mixed until a uniform color appears. Only after that it can be poured into the tank.

If the mixture does not blame, then it will remain in the tank, and through the carburetor will enter the combustion chamber in portions with different ratios of gasoline and oil.

Fractions of clots of oil clog a candle. The motor stops, stalls, does not start. This is the fourth mistake of beginners.

It should be borne in mind that gasoline is hazardous. The risk of fire exists. Therefore, it is necessary to fill the mixture at a safe distance from the buildings, and in the case of the strait, which often happens to eliminate the causes of a possible fire. Violation of fire fighting measures. error

After pouring the fuel into the gas tank, the latter closes with a screw plug and the lack of leaks is checked. The trimmer for the grass is raised up so that the gasoline fills the cork. There should be no subterations from under the lid or from the fuel hoses.

Lack of such a check. an error can cause a fire.

There is one technical cunning that can cause a benzotrimer motor is not started due to the cessation of fuel supply. If you look carefully at the center of the traffic jam, then a round hole is clearly visible.

We turned Motokosa. Gasoline filled the cork, but does not flow through the hole: there is a sapphone inside. He is working.

On the inside, its design is clearly visible: a valve system of plastic and rubber is built.

In the usual state, the valve is pressed to the hole and the fuel does not flow. Когда бензомотор работает, то топливная смесь расходуется через карбюратор. A vacuum is created in the tank. The vacuum opens the valve of the saapon, the pressure is restored.

You should know the two consequences of a malfunction of the sapuna:

• Constantly open hole. fuel pours out of the tank during its inclinations (excess consumption and the probability of fire).
• Contamination or sticking of the valve channel is the reason that the lawn mower does not start or stalls.

Check the soundtress is easy: you need to blow it in both directions.

All about the gas tank cover, including the repair of the saapun, is shown in the video of Bogdan Shabanov.

3 additional advice associated with limited chemical resistance of a mixture of gasoline with oil:

• Do not create an excessive fuel supply. Use freshly prepared fuel mixture. In a maximum of a couple of weeks, she will lose her useful qualities;
• Prepare as much fuel as it will go to one mowing during the day. At the end of the work, drain the rest from the gas tank and burn the last drops from the fuel canal with a neglected engine;
• It is especially dangerous to leave the mixture in the gas tank for a long time. winter. In the spring, you will make sure that the engine does not start without cleaning the carburetor (gasoline evaporated, the oil thickened and glued the valve).

In more detail, the technology for eliminating these malfunctions shows in its video video “Chinese lawn mower is not started” Sergey Lesnik. Pay attention to the fuel filter.

To adjust the work of the carburetor allows a special screw, but it is not worth it to twist it without need: the factory adjustment is accurately exhibited. It is better for novice users to contact the service center.

A few tips

It is impossible to launch in the room or in the same place where the equipment was refueled. The high concentration of exhaust gases that differ in toxicity has a negative effect on human health.

You can not smoke during the preparation or refueling of the combustible mixture. It is forbidden to carry out these actions near the open fire.

New equipment needs “running.in”. Do not sharply burn on gas. At first it is necessary to work, making short stops, so that all the elements, as they say, are pulled and greased enough.

The lawn mower is not started? Eliminate the most common reason

Chinese motorcycles headache for the owner, but still without them nowhere. The main problem is the difficulty of starting after a long downtime. If the lawn mower worked as a clock in the fall, but it does not start in the spring, then you must most likely disassemble the carburetor and clean its valve.

Necessary tools:

If the motor motorcycles refuses to start, then first of all you need to check the candle. If it is completely dry, then this means that the fuel is not supplied to the combustion chamber and the reason is in the carburetor. Immediately it is worth checking the candle and for the subject of a spark in order to exclude it from the reasons on all fronts.

You can also make sure that the motor itself is serviceable. To do this, having twisted the candle, you need to pour a syringe into a combustion chamber of several milliliters of gasoline. After this, the candle is twisted and the lawn mower is started. If everything is in order with the motor, then it will work for a few seconds. This will once again confirm that it makes sense to disassemble the carburetor.

Next, a plastic protective cover is removed along with an air filter. After that, 2 screws are twisted with a cross.shaped screwdriver, holding the air damper and the carburetor on the engine. Fuel tubes immediately break down.

From the side of the cap of the suction, you need to twist 4 screws with a screwdriver, and divide it into 2 halves. We are interested in half with suction. There is a valve from its inside in the center.

He often sticks out, because after evaporation of gasoline, with a simple on it, a viscous oil works as glue. To check it, you need to put a short thin tube and try to blow the air through it. If he is stuck, he will not be able to blow out in any direction.

Caliping of the valve is eliminated by a conventional match. Toothpicks are better not to use, since they are sharp and can harm. A match must be slightly rested on the valve and stir it. After cleaning the match, it will be blown up.

Fuel will be able to act, so it will work. Cleaning the valve is not a panacea for all motorcycles that do not start after downtime, but this helps in 8 cases out of 10. The remaining 20%, as a rule, are also associated with a carburetor, usually with a needle.

In no case should you store gasoline in plastic containers from under water. When mixing the fuel mixture, a static charge accumulates, you can “catch” the spark.

Therefore, at gas stations it is not allowed to refuel gasoline into plastic canists, only in metal. Before pouring gasoline in a metal canister, it is better to put it on the ground, so statics are removed from the case.

But there are situations when simple manipulations with a motorcycle do not help. The engine still does not start. In this case, we are in progress, we check the power and ignition system, guided by the rule “the motor does not work if there is nothing to burn or set it on fire”.

Benzotrimmer loves cleanliness. It is necessary to monitor the purity of the air filter and fuel. It is better to defend gasoline bought at a gas station for 2 days and pass through the simplest filter. a piece of bike matter.

We check the electrical equipment as follows:

We unscrew the candle, examine the gap between the electrodes. We set the right gap between the electrodes can be a “grandfather” way. We take a blade from a razor, scraps in half and insert a home.made probe between the electrodes. If the blades enter tightly, then the gap is perfect.

We put on a candle cap of a high.voltage wire and lean the candle against the metal surface of the engine. Twist several times by the starter. If the spark beats well at one point, then the gap is adjusted correctly. If not, the spark is weak or “wanders”, then it is necessary to re.adjust the gap between the electrodes.

“I bought a trimmer ethletric for grass with a bent bar. Collected, turned on. everything works. The belts are not designed for high growth. I immediately threw it away, I had to sew it myself. The build quality is not so hot, but in the work of a braid for grass is convenient.””

“I have gasoline Parma, heavy, 10 kg. The motor is excellent. starts from the first launch. The fishing line for the trimmer in the kit is no good, I bought a more strong one, the disk is also not so hot, dull after 30 minutes. work. Shoulder straps with a stretch came up. Pulls on its price.””

The lawn mower starts poorly? Adjust Magneto’s gap

As the experience of operating benzos, in particular Chinese production shows, they often have problems in the launch system, so they are often difficult to start. Problems are usually related to the flywheel magneto.

For those who are unfamiliar with this unit, we remind: this system consisting of ignition coil, spark plugs and flywheel with magnets. We have to deal with the clearance of Magneto, more precisely, with the gap of the ignition coil and its guaranteed exhibition. It is because of it that problems arise in Chinese units, which for several years were operated in domestic conditions or in the conditions of the Housingire. But it happens that even in new products it is difficult to start, especially for cold. And in this case, usually problems with the launch are related to the gap of magneto. Most people who operate the lawn mowers expose the Magneto gap of 0.4 mm, as recommended by many manufacturers. What will happen if this gap is adjusted and set 0.25 mm? It turns out that when it is reduced, the electric spark becomes thinner, smaller and practices every beat even with slow speeds of the Magneto flywheel.

That is, consciously reducing the gap, we thereby increase the likelihood of a normal launch of the lawn mower without any excessive physical exertion and shortness of breath even when starting a cold engine.

Gap and procedure for its exhibition in different cases

As a template, a strip of the required width and length carved from a conventional plastic bottle, for example, from under Pepsi-Cola, can be successfully used to put a gap of magneto.

It is only necessary to install it last, so as not to damage when carrying out repair work, using the same hair dryer for any purpose. After all, if it is crumpling from the effects of hot air, then there is no need to talk about the accuracy of the gap of Magneto. It is with the help of a spacer carved from a plastic bottle that you can with high accuracy set the Magneto gap 0.25 mm, since its thickness is exactly the same. To make sure of this, it is enough to fold the strip four times and measure its total thickness with a caliper, which will be exactly 1.0 mm. We put a spacer cut from a plastic bottle on the magnets of the Magneto flywheel, set the ignition coil in place and fix it with strong bolts of 8 by 8, after filling the holes with a thread on the case with a threaded latch.

We apply it on the bolts, twisting which, you must not forget to fix the terminal of the mass. It is better to use an electric screwdriver at the same time. We squeeze the bolts with a regular hand screwdriver with a hexagonal bat to the limit, since the use of a M-shaped hexagon can lead to a breakdown of the faces of bolts.

It remains, turning the flywheel with magnets, remove the plastic spacer and, continuing to rotate it, check the quality (uniformity) of the clearance when it turns from 0 to 360 degrees, which, with this approach, is ideal. Some use the Magneto’s gap folded by half a photochex leaf, which is also permissible, but the use of a spacer from a plastic bottle gives the best result. over, it can be used reusads dozens of times.

It remains only to install body parts and you can run the engine to test how it starts and works. Sometimes during operation, the ignition reel reels are deformed to the magneto housing, which does not allow you to reliably install it, since the holes in the coil and on the engine body do not coincide.You can, of course, try to straighten out the defect, but it will be more reliable to put a new coil, especially since it is not too expensive.All further actions are similar to the above case, unless the heads of fastening the spark plots can not be under the hexagon, but for the wrench and the cross.shaped screwdriver. But this does not change the essence of the matter: the tightening of these bolts should be guaranteed to be reliable, as in the first case. To evaluate the quality of the work done, it is necessary to make sure there is a spark between the electrodes of the candle visually after the final assembly of the engine. To do this, we connect it to the mass and begin to turn the engine using the starting device of manual or electric. The check for the spark has one nuance. If you sharply pull behind the kicks starter, then the spark will appear even with slightly faulty magnets of magneto and even completely non-working ignition coils. In this case, the presence of a spark is not yet an indicator of the serviceability of the ignition system.The quality of sparking can only be judged by its appearance, when the flywheel Magneto does not rotate too quickly, for which the kicks starter should not be pulled, but evenly and not to pull.

Only in this case, the engine of the benzotrimer or chainsaw will be started without problems, both in the morning and throughout the entire working day (respectively, the so.called hot or cold launch). If there is no spark with a slow movement of the starting device, then, most likely, you will have to change the ignition coil, set the gap of magneto or change the candle.The practice of putting a gap on benzos and chainsaws described above for five years has justified itself completely. There have never been complaints from users after such a repair. This really helps when starting not only Chinese gasosos, but also European and even branded. At all units, regardless of the manufacturer, putting the Magneto clearance 0.25 mm instead of 0.40 mm recommended by manufacturers, gives excellent results. Some people offer gaps 0.10-0.15 mm, but this. After all, there is a certain thermal expansion of the parts of the ignition system, the housing itself, the gas mower or chainsaw crankcase, and such a small gap can disappear altogether, which can lead to breakdowns (burning out), first of all, the ignition coils. Therefore, a gap of 0.25 mm is from all points of view optimal.

How to understand that the carburetor of the lawn mower needs to be adjusted

The following signs may indicate this:

• Difficult launch of the motor, weak speed set.
• Increased fuel consumption.
• The engine works unstable, the speed is often jumping.
• There is a large amount of exhaust gases.

Find out whether the carburetor is correctly adjusted, checking the spark plug will help. First we release it from the casing, disconnect the contacts from the igniter.

Clean the candle nest with a device that pumps the air. For this purpose, a compressor with a small tube is perfect. Using a dynamometric key, we remove the candle.

After pour the sparkle with the spark plug for flushing the thread into the nest, unscrew the candle to the end after a short period of time. If the electrodes are black, then this is a dozen that is associated with poor carburetor adjustment. If she is a brick shade, then everything should be in order with a gas station.

After a long period of downtime, the tool also needs to be adjusted. For example, after winter.

It is also recommended to set up a setting when changing the composition of the fuel mixture: oil or gasoline.

How to adjust the carburetor of the lawn mower with your own hands

Adjustment

• Run the motor. When it is launched on the XX, knives should not rotate, but if the opposite occurs, then we reduce the speed of the idle.
• We adjust the screw l. He is responsible for the mixture at low speeds. First, scroll to the stop clockwise, then unscrewed 90 degrees against the sentry. If you find failures, we repeat this action, weakening it for 1/8 part, that is, 45 degrees.
• Adjust the La screw, more frequent name. t. With an increase in speed XX, more air is added to the mixture. Power is lost. But if there is not enough air, fuel is burned worse. We unscrew the screw so that it works perfectly at low speeds, while the knives should not rotate. In the process of setting, you need to feel momentum, it should work stably on XX.
• Adjust the screw h, which sets up the mixture at high speeds. To identify their maximum quantity, we use a tachometer. Upon reaching the largest number of engine speed, we unscrew the screw to the left by 180 degrees, the adjustment on this ended.

Sometimes only the correct setup and the use of the device reveals its entire potential. No need to neglect it and conduct as necessary.

trimmer for PARMA PRACTIC BTK-043 Reviews

I really liked the trimmer for the grass. Before that, there were 3 Chinese trimmers for grass, which are not standing nearby with this oblique. Power is enough. Poster perfectly. Light. Starts without problems. Small gasoline consumption. Comfortable belts. The coil works without problems, the fishing line for the trimmer throws easily and on time. No need to smear a gearbox.

Bought a couple of days ago and immediately to work. Swings very well. Light, fuel consumption is small, the power is enough. In general, you can safely take.

Light, small fuel consumption, well starts up, quite powerful, good equipment.

Good braid for grass, not very noisy, there is enough dope. It starts easily. One drawback, this casing, is small, all the dirt flies away, but this is a trifle

A good braid for grass, not very noisy, not heavy, there is enough dope, I started it after the purchase from the third time.

I use 2 seasons in my site, no problems. After winter, the starter pulled 5 times. started up! Of course, it is weak for field work, but it copes with my 9 acres with a bang. The main thing is not to start the site, otherwise you can’t do without a cutter. In quality, it corresponds to the brand and price, I am satisfied!

Very hard springs on centrifugal clutch, so it does not work on small gas, the disk does not pull when spent, at higher speeds, gasoline eats as a horse, you do not have time to fill up, in comparison with Shtlevskaya of the same power, the gas trigger is very hard, after the hour of operation of the finger. You do not feel, the cone is very hot, the mounting knot of the bar to the engine to an unpleasant burning sensation, and so if that. then to ram.-. very good, and more. Strongly presses the right hand in the area of ​​the thumb due to the corner protrusion of the handle, in Stilevskaya they made more streamlined,

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