Checking a compression of a trimmer for grass without devices. The advantages and value of the lawn mower

What compression should be on a gas tank

The engine will stop starting, its turns will begin to “jump” during operation, extraneous noises will appear. The power of the power plant will noticeably decrease, fuel consumption will increase, and harmful gas exhaust gas will increase. By the way, one of the main signs of low compression is blue smoke from the exhaust pipe that appears at the time of the engine starts.

The most common reasons for the fall in compression include:

• Burned piston, valve or gasket on the cylinder block.
• The details of the cylinder have noticeably worn out and require replacement.
• The saddle of the valve collapsed.

The first thing to do if any of the signs described above is discovered is to immediately call on the service station, take measurements and diagnostics. If the preliminary “diagnosis” has been confirmed, it is necessary to replace faulty components and measure the compression again.

Low compression and how to understand what the problem is: CPH, rings or valve

As already mentioned, a decrease in compression can occur for various reasons. At the same time, quite often this leads to this leads, wear or destruction of piston rings. To check the rings in place without disassembling the engine, you can use the available method of checking using motor oil. At hand only you need to have a candle key, a little oil and a syringe.

• After the problem cylinder was detected and the compression readings are recorded, about 20-30 ml should be poured through the candle hole with a syringe. pure oil.
• Then the hole must be closed and the engine is scroll through the starter. This is necessary so that the lubricant spreads through the cylinder.
• Next, a repeated compression measurement is performed in this cylinder.

In the event that the compression clearly increased or even approached the normal indicator, then it is likely that the following elements of the CPH are worn out: pistons, rings or the walls of the cylinders themselves. At the same time, the oil “compacted” existing defects, allowing to achieve the necessary compression of the mixture in the cylinder.

If the compression indicator after filling the oil increases slightly, then problems with valves are quite possible (for example, valve gear and t.D.). Piston rings can also be badly damaged, as well as the gasket of the GBC.

The complete absence of any changes means that the tightness of the combustion chamber is violated due to any problems with the valve mechanism. It is possible that the valves do not fit the saddles loosely, that is, it is necessary to adjust them, grind them, etc.D. Also, cracks and breakdowns in the BC or HBC should not be excluded.

The clogging of the muffler

What else can be the reason that it is impossible to start a benzotrimer engine? Even before resorting to more cardinal actions, you should check the serviceability of the muffler or exhaust channel. This does not apply to new trimmers that have practically no special development. If the trimmer has been to the trimmer, and at the same time, the tool has not been subjected to diagnostic measures, then the muffler clogging should be checked.

If the lawn muffler is clogged, then the exhaust gases have nowhere to go out, and therefore it is impossible to get the engine. In an instant, the exhaust channel cannot clog, therefore, the day before they should have been manifested approximately. Such signs:

• Increasing the volume of the sound of the motor, which is associated with overcoming high resistance with exhaust gases to release them
• Black smoke from a muffler is a dozen that settles on the walls of the exhaust system
• Unstable engine operation
• The motor stalls on its own when working at idle

Exclude or confirm this factor by examining the exhaust system. If the anti.icing mesh has significant clogging, then undoubtedly, the reason for the impossibility of starting the engine is the exhaust channel. The mesh must be cleaned, only this must be done carefully, since the black carcass is a very dangerous carcinogen that can provoke serious diseases of the human respiratory system. To clean the anti.icing mesh and muffler walls of the trimmer for grass, special tools should be used, and work with the use of protective equipment.

What to do if a braid for grass does not start for “cold

To begin with, we will analyze the situation when it is impossible to start the engine of the lawn mower to a cold. What does this mean? Surely, many faced a situation where a trimmer for grass starts on hot just perfectly, but you just have to take a short break, as the problem arises. This problem with the start of the engine after it cools. What could be the reason?

Of course, no one excluded all the above factors, but if the situation is constantly found, then there is no need to check them. If a hot lawn mower starts well, and problems arise on the cold, then you should look for the reasons inside the CPH (cylinder-piston group).

To identify a malfunction, you will need to use a compressometer. We screw the compressometer into the hole instead of a candle, and after that, drive the starter handle. Measure the pressure inside the cylinder. compression.

The amount of compression should be about 8-12 atmospheres. After the tool has warmed up (it is enough to work for 15-20 minutes), you should repeat the verification procedure. If the compression on the hot engine is below 8 atmospheres, it seems to be a malfunction of the CPG. This means that the rings, the piston and the walls of the cylinder are worn out.

You can fix the situation by replacing CPG. When replacing, it is important to take into account such a recommendation as abundant smearing of parts with motor oil inside the cylinder. This is necessary so that in the first minutes of starting a new cylinder with the piston, no formation of.

With a decrease in engine compression, fuel consumption increases, and also the productivity of the tool falls. You can work with such a tool, however, with each subsequent hour of work increases wear. One fine day, a lawn mower, it will not be possible to start, even when warming up.

Important! You can warm up the engine of the lawn mower with low compression by pulling the starter handle. When warming up, the metal is expanded, thereby the compression increases.

How to check the compression in the engine without a compressometer? 3 ways

In some situations, the question of how to check compression in the engine. without a compressometer or with it. can become vital for a driver of any rank. An alarming features, such as increased motor appetite, a drop in power and acceptance, increased oil consumption, poor unstable operation on idle, urge the car owner to urgently engage in diagnostics of the state of engine cylinders.

Specialists believe that the most reliable (but very expensive) way to find the cause of the problem is a complete disassembly of the engine with viewing all its nodes.

However, at the same time he is quite time.consuming, takes a lot of time and can’t do the power of a person, quite far from knowledge in a car mechanic. And if as a result it turns out that some trifle is to blame and you in vain destroyed time and money, it will be insulting. Therefore, before running to a service station, competent motorists are available in garage testing conditions. Including compression measure.

In addition, such measurements are made after major repairs to make sure that everything fell into place and works like a clock (preferably not Chinese).

How to check the compression in the engine without a compressometer, it happens that you still need to know if you are on the road, and this device in the trunk is not observed among the tools. These movements must be done at least in order to understand whether it is possible to go further or your engine is about to fasten.

The pressure of pressure can be caused by various reasons. Some of them are easily eliminated, you can’t cope with others without specialists. The main factors that cause the lack of compression are:

• Wonderfulness of candles. The most innocent reason that anyone who has once looked under the hood will win. Cm. the article “Signs of a malfunction of the spark plugs”;
• It’s time to change the gasket in the cylinder block. You won’t do this on the road, but having reached home. a completely acceptable repair on your own;
• The problem with the valves. Perhaps they need their regulation if they are with gaps. Much worse, if one of the valves burned out or its saddle was destroyed;
• Piston rings failed. Alas, we pull out the stitch and remember the phone of a good familiar car mechanic-motorist.

Even if you came across the most sad case, after measuring the compression, at least you will know which of the cylinders failed you.

We warn you right away: it is very approximate and will help you determine the problem place only if the pressure difference is very significant. The order of “dancing with a tambourine” is as follows:

• All candles are removed, with the exception of the one in the first cylinder;.
• The crankshaft manually cranes until the end of the compression tact. The signal will be the coincidence of the corresponding labels;
• The second candle is screwed. The manipulation is repeated. The muscle efforts that were required in the first and next case are compared.

This procedure is carried out with all other candles. Inaccuracy of the availability of the availability: while check the latter, forget how much you strained from the first. However, with a big difference, you can estimate where there are obvious jambs and try to fix them. If you are not 300 kilometers from housing, sink on a wounded car to the next hundred and ask for a compressometer.

To evaluate the entire scale of the tragedy and start calculating losses, after using the device and comparison of the results, the following actions are made:

• a spoonful of motor oil is poured into a dubious cylinder;
• the engine is turning;
• data are measured before and after;
• The indications of both measurements are compared.

If the pressure has increased, and the data is significantly different, this suggests that the gap that appeared relatively small, and the oil simply shut up this gap. Cm. the article “What should be the gap on the piston rings”.

Conclusion: you have piston rings or a hole in the cylinder.

If the oil did not work, and the readings did not change. the hole is so great that the oil could not be clogged. That is, your attention is primarily paid to gaskets and valves.

Even knowing how to check the compression in the engine without a compressometer, you should not refuse the benefits of civilization. The most simple, but quite reliable will cost only 750. And if you are friends with the tool, such a device can be made by yourself using a pressure gauge, a brass adapter and a tube.

Low compression and how to understand what the problem is: CPH, rings or valve

As already mentioned, a decrease in compression can occur for various reasons. At the same time, quite often this leads to this leads, wear or destruction of piston rings. To check the rings in place without disassembling the engine, you can use the available method of checking using motor oil. At hand only you need to have a candle key, a little oil and a syringe.

• After the problem cylinder was detected and the compression readings are recorded, about 20-30 ml should be poured through the candle hole with a syringe. pure oil.
• Then the hole must be closed and the engine is scroll through the starter. This is necessary so that the lubricant spreads through the cylinder.
• Next, a repeated compression measurement is performed in this cylinder.

In the event that the compression clearly increased or even approached the normal indicator, then it is likely that the following elements of the CPH are worn out: pistons, rings or the walls of the cylinders themselves. At the same time, the oil “compacted” existing defects, allowing to achieve the necessary compression of the mixture in the cylinder.

We also recommend that you read the article about why compression is increased in the engine and what malfunctions are given to this. From this article you will learn why increased compression is bad for the motor, as well as what consequences for the ICE arise if the compression in the cylinders is higher than the norm.

If the compression indicator after filling the oil increases slightly, then problems with valves are quite possible (for example, valve gear and t.D.). Piston rings can also be badly damaged, as well as the gasket of the GBC.

The complete absence of any changes means that the tightness of the combustion chamber is violated due to any problems with the valve mechanism. It is possible that the valves do not fit the saddles loosely, that is, it is necessary to adjust them, grind them, etc.D. Also, cracks and breakdowns in the BC or HBC should not be excluded.

What do we have to do?

First of all, we install a car under the hill, in principle, no matter what the angle will be, and ten to fifteen degrees will be enough. The most important thing is that the car rolls easily, but you do not need to choose a very steep descent, the results of the check may be wrong.

How to check?

They stopped the car on the descent, turned on the second gear, released clutch and handbrake. We cut the time. After some time, the compression is pulled, the compression from the cylinders leaves, the machine, of course, is not opened.

We are waiting, after some time there will be such a failure-OP, everything, the car went, op, until the next cylinder, I got up. We measure the time interval between these failures

After a while, the compression was pulled, the car went again. And so you need to measure the time four times. unless, of course, you have a four.cylinder engine.

Inspect the seals

If the previous inspection has not detected total damage to the device, we proceed to checking the starter. The rest of the aisles are killed for measuring “lower compression”. The pressure is pumped through the candle hole. The measurement is carried out by a special device. The oil seals are lubricated with soap solution. If it bubbles, the oil seal is faulty and requires replacement.

It is difficult to drown out the hole at home, so we visually examine the seals from the clutch and starter. There must be no oil stories. Then the seals can be called workers. From the side of the starter. the starter itself is removed and the oil seal is examined under it. At the same time we visually inspect the starter itself.

Having examined these 4 groups of the apparatus, it is really possible to find the problem and solve it on the spot. Often the main solution is to replace candles, seals, gaskets. It is not expensive. If inspection of the unit and replacement of faulty parts did not help, the tool needs professional maintenance and a thorough inspection.

How to check the compression in the trimmer cylinder for grass

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Carburetor setup should help. my experience. I have a Minsk motorcycle, every day I once cleaned and tuned it.

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Measure compression in cylinders with your own hands

First of all, it is necessary to install according to the technical documentation what is the normal compression of the gasoline engine specifically to this car and determine the complexity of access to the spark plugs. If access requires disassembly of other engine units (a throttle unit, an intake receiver) that prevent their twisting and there is confidence in their successful disassembly and assembly, then you can begin to measure the measurement.

There is an opinion in order to correctly measure the compression in the engine, you need to turn the crankshaft to two to three turns with the starter. This method will lead to improper determination of the malfunction and, as a result of unjustified engine repair costs.

The verification is performed in different modes in order to wide analysis of the state of the motor:

Checking with a closed throttle

This measurement method is needed to determine small engine defects, sensitive with a slight admission of air into the cylinders. It can be a crack on a valve plate, a small outburst of the edge or lack of tightness in a pair of a saddle-valve. The flow of air through a closed throttle damn when measuring the compression is limited, and its value will be low (from 10 to 11 atm). Due to the small flow of air into the cylinders, sensitivity on leakage increases, as a result of which the results of pressure parameters are underestimated.

Checking with a fully open throttle damper

To determine the strong wear of the internal combustion engine, compression is checked with a fully open throttle damper, providing the maximum flow of air into the cylinders. An increased amount of air contributes to the growth of pressure, but also the leaks increase, but in comparison with the mass of the incoming air, they are so small that the amount of compression drop is insignificant and reaches 12. 13 atm. If there are “gross” defects in the engine, then decrease to 8. 9 atm. Possible reasons:

Poor compression in the engine

The behavior of the car has changed. The engine does not start from the first scrolling by the starter or requires prolonged rotation, and at a subsequent environmental temperature may not start at all. If you turn out the spark plugs and examine them visually, then the reason for the refusal to start becomes clear. the candles are “wet” from an excess of fuel entering the cylinders. These are symptoms of poor compression in the engine.

What to do if the above signs are identified

In order to avoid further and soon wear, it is necessary to establish the causes in the shortest possible time and identify the nodes to be repaired.

Based on the results of compression measurement, the following indicators are possible:

An increase in compression in the motor is visible in exhaust gases-the color becomes a silver-white and the oil consumption increases. When acceleration, the ringing of piston fingers appears. A large compression causes an increase in soot on plates of valves and guides, and a coke layer forms on the walls of the combustion chamber that reduces the volume of the chamber and, accordingly, changes the degree of compression of the cylinders.

High compression gradually causes the detonation knocks of the engine that destroy the connecting rod piston group.

The reason for overstated compression

Analysis of the engine audit shows that the reason is not one. The table contains the causes of increased compression in the motor:

The cause of low compression

Weak compression is detected when it launches, especially in cold weather, as well as signs are found in the loss of dynamics and an increase in fuel consumption.

Low compression increases the speed of engine wear, and if the defect is in one cylinder, then the idle stroke is unstable, the machine often stalls or underestimates idle speed.

If there is no compression in one or more cylinders, then the engine starts very poorly, and the leaders immediately begins to work with unbalanced, with strong vibrations and shaking.

If the compression disappears simultaneously in all cylinders. the engine will not start. One of the reasons may be a breakthrough of the timing belt on the started engine and a collision of a piston with valves. After the valve strikes, bend. The gas distribution system loses its tightness, and the compressed fuel mixture is directed at high speed to the intake and graduation collectors.

Compression also disappears in one of the cylinders due to strong burning of the valve plate. There are examples when from 40 to 50% of the valve plate area was melted and the compression is zero. This is easy to determine without a compressometer. It is enough to wrap the candle in this cylinder and when scrolling by the starter, the crankshaft will rotate easily and uniformly, without highlighting the compression tacts.

When measuring compression, it is advisable to observe the arrow of the pressure meter (manometer) and monitor the dynamics of its increase. By the rate of compression growth, you can indirectly determine which group of parts strong wear. If the manometer shows a low compression (3-5 atm) on the first tact, and with subsequent tacts the rate of pressure increases, then with a high probability it can be established that the piston rings are worn out. As a rechecking of indications, you can apply the method of artificial creation of an oil film on the cylinder wall, adding 5-10 ml of oil through a candle hole. If with added oil the compression increases sharply on the first tact and is established nominal, then you can already specifically say about the wear of the copression rings. In the case of measurement in two neighboring cylinders and obtaining a low result without oil and oil, you can conclude a defect in the laying of the cylinder head head.

Another option is also possible when it is achieved on the first tact of 6-9 atm and on subsequent strokes the arrow of the manometer freezes in the same position. In this situation, it is assumed that the valve or gasket of the GBC is absent. You can more accurately establish the cause by other diagnostic devices, such as pneumonzer or electronic oscilloscope.

To eliminate problems, you will need to use a tester to check the magnetic trimmer for the grass, namely its primary and secondary windings. The resistance on the primary winding 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 an open chain. The resistance on the secondary winding should be in the range from 6 to 8 kOhm.

On some coils it can reach 15 by.

Air filter

If your bureau is not started normally or immediately after starting dies, you should pay attention to the air filter, since it may clog, as a result of which the air does not fall into the combustion chamber and the fuel does not occur and does not occur. To check if the filter is in the case, remove it and try to start the engine. If he earned, then the reason was found. The filter must be replaced or thoroughly washed and dried before installation. If you find out the oil in an air filter, it must be washed with gasoline, squeezed well and dry at least 2 hours before installation.

If the device still does not start when removing the air filter, it is recommended to check the fuel filter.

Fuel filter

This filter cleans fuel of possible pollution. If it is clogged, gasoline does not enter the cylinder, and, accordingly, the unit does not work and does not delay after starting. The fuel filter is located at the end of the intake hose, which is located inside the fuel tank. To get to the filter, you need to remove the plug with the tubes emerging from it.

When removing the traffic jam, the intake hose can be disconnected and left in the tank. It is removed using tweezers.

Then remove the old fuel filter from the hose and install a new, previously purchased on it. It is also possible to clean the fuel filter if you do not have new. The filter should be attached to the hose using a spring clamp.

Install the intake pipe and insert it into the tank.

It should be noted that in some models of a trimmer for grass, the intake hose is not located on a traffic jam, but inside the tank. You can remove it with a tweezer or a hook bent from a wire.

breath

The respiratory valve is a check valve, which is designed to level pressure in the gas tank. If it is clogged and does not allow air to enter the tank, then a vacuum is created inside the fuel tank, and fuel ceases to enter the carburetor. To check the valve serviceability, remove the hose that comes from the tank to the carburetor. If the gas does not leave the tank, the air intake is clogged.

Trimmer users for grass are often asked: where is the fan? This valve is usually located in a gas hat and looks like in the next figure.

It is very easy to clean the fan: disassemble the valve and rinse all its components. In some forceps, this valve can be located directly. On the fuel tank. You cannot find it right away, because it is hidden from the eyes under the starter case. This respirator is cleaned using a regular needle.

Exhaust duct

The reason that the trimmer for the grass has lost a lot of power, and when you are trying to increase the engine speed, it gains them slowly, often is the blockage of the exhaust channel through which exhaust gases emerge from the combustion chamber.

The muffler must be removed so that the burner does not get inside the cylinder. Next, clean the exhaust channel from the car.

This should be done very carefully, avoiding carbon entering the combustion chamber.

After this procedure, the low power of the device and the low set speed of the braid will no longer upset you.

Insufficient compression

If the compression is insufficient, then the engine is not possible in most cases. To check the compression, you can use a car compressor.

What should be the compression? Usually compression should be at least 8 kg / cm 2. Although even at 8 kg / cm 2, some engines do not work at idle, since the fuel is not pumped enough. If your lawn mower does not pump above 8 kg / cm 2, you will have to check the cylinder, piston and rings.

Poor compression may also be the result of a free carburetor. Make sure he is swinging. If so, tighten the fasteners that holds it in place. Also, if the carburetor is poorly twisted, you will notice that gasoline is dripping during operation.

Electric trimmer for grass vibrates

Many mowing users noticed that some time after the device begins to work, it begins to vibrate very much. On some trimmers, mainly in more expensive models, an anti.vibration system was installed in the form of shock absorbers located between the engine and the bar. But in some cases, even this does not save from strong vibrations. The cause of strong vibration in the trimmer can be a small amount or complete absence of oil on a hard or flexible shaft located inside the rod of the device.

Replacing the hard lubrication of the shaft it looks like this:

Flexible lubrication of the shaft is as follows:

This is done as follows: first you need to lubricate the end of the cable, and then insert it into the rod, then, moving inside the pipe, grease the part and evenly distribute it on the surface. Then insert a shaft with a flexible shaft into the engine and fix it.

If the oil does not help and the vibration continues to appear, it is necessary to replace the flexible shaft.

Trimmer for the grass is very hot

Overheating of a trimmer for grass can occur for many reasons:

The latter will happen if you install the mower is not suitable for this device, or when the axis is shifted inside the arrow. These changes complicate rotation, increase the load on the engine, and it overheats.

Checking compression in the benzo tool

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at 5 atm can also be started. But it is definitely necessary to apply measures to increase compression.

And you know, the STIHL repair technology does not have a compression check at all. Only on four.stroke engines. That is, it is safe to say that this is not the most reliable engine state.

Olegych wrote: that this is not the most reliable engine state.

And I would say to the turnover. The most reliable engine state. example. When you work in the service, give a saw from 9 atm, and in a week the same client comes to you and claims that the saw works poorly. We measure the pressure.6 atm. who is guilty?Of course the owner. because he deigned to fill either the oil or too little.

UR5IMW wrote: in a week the same client comes to you and claims that the saw works poorly

According to the instrument management manual for repair, remove the muffler and visually show the client a damaged engine. If in a week. In general, I myself am a supporter of the compression verification. Some information it still gives and sometimes saves time for preliminary diagnostics.

Olegych wrote: Visually show the client a damaged engine

UR5IMW wrote: I see badly. Yes, he was so.

UR5IMW wrote:.but you can’t say against the numbers.

Olegych wrote: You indicate compression standards for certain engines? I will get acquainted with interest

Olegych wrote: Compression standards for certain engines

Olegych wrote: I meant officially declared by the manufacturer.

In the instructions for my file, the following is written. “. Compression degree (excess pressure), kgf \ cm2 at least 9 “.

Olegych wrote: This is contrary, because where is the norm?

You interested me. I, despite my objections to you, I still use a compressometer, although the technology does not provide. I’ll try to monitor several products from new to complete wear, maybe something will turn out interesting. In addition, it would be nice to remove the dependence of the compression on the degree of warming up the engine, since this is noticed. Well, on yours:

Check the carburetor, pipe, gaskets

Remove the carburetor, inspect the condition of the pipe and gaskets. The carburetor is unscrewed by the hexagon. Stages of verification:

Check the pipe. behind it is also a gasket. The Chinese forget to put it. The detail itself can give a crack from overheating or vibration. Torn gasket contributes to a parasitic air pump. All adjacent planes to the engine and carburetor should be even, without cracks and chips.

Check the piston, measure compression

Having removed the carburetor, we will see the piston through the window. Turning with a starter, observe the movement. Must move smoothly, without gnashing, not to have a burr, zabin, vertical crooks. It is convenient to inspect the piston and through the muffler mount window.

To determine the condition of the piston system, measure compression. To do this, use a special compressometer. It screws up instead of a candle. In the new technique, pressure 7-10 bar. In Bautnoye. more than 5.5 bar. We pump up with a starter. Normal pressure indicates the integrity of the piston, glass and rings.

How to check the engine compression?

The most common device of these goals is the compressometer mentioned above. Unlike uncomplicated domestic structures, foreign firms produce entire sets with a set of adapters (adapters), allowing measurements on cars of any grades and models.

Quickly and effectively measure compression modern motors tesers. These devices do not actually fix the pressure, but the amplitude of the pulsation of electric current consumed by the starter during scrolling. After all, the higher the pressure in the cylinder, the greater the cost of the starter power to rotate the crankshaft.

The deficiency of the tester motor. The results obtained are expressed in relative units, for example, as a percentage of a cylinder that works better. Only the most expensive motortakers are able to measure the absolute value of compression in each cylinder, but this is possible only on the basis of a large number of statistical data on a particular engine model and their comparison with real pressure in the cylinder.

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:

• unscrew the gearbox located at the bottom of the bar;

• After removing the gearbox, you will see the end of the shaft, for which you need to pull to extract the part;

• after extracting the shaft, it must be abundantly lubricated with a special lubricant “Shrus-4” or ordinary-“Litol-24”;

• 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.