Oleo-Mac lawnmower does not rev up

Reasons of power loss in brushcutter. The lawnmower does not develop its full power

Anyone who owns a garden or a plot of land, is well aware of the problem of dealing with excess vegetation. Now the grass trimmer has come to the rescue, which has successfully replaced the usual scythe in this field. This unit is very convenient in operation, but it, as well as any mechanism, because of the harsh working conditions or incorrect operation is inherent in failure. Quite common are situations when the grass trimmer does not pick up speed. To understand this problem, it is necessary to understand some aspects related to the functioning of the machine.

All grass trimmers are classified according to the type of power: gasoline or electricity (from the network or battery). It should be noted that gasoline mowers are superior to their electric and battery-powered counterparts in many respects. Despite the fact that they all perform similar functions, the difference in performance, maneuverability and efficiency is very noticeable. However, the general principle of operation of all types of manual mowers almost the same. the devices are equipped with engines (two- or four-stroke combustion engines or electric motors), which set in motion the cutting unit (spool with a fishing line or a metal disc). All elements are mounted on a straight or curved boom, including the handle to control the trimmer, which houses the main buttons.

Since the problem of weak revolutions is more characteristic of gasoline versions of trimmers, they will receive more attention. So, the lawnmower is very comfortable in operation and unpretentious in maintenance. In this case, most of its faults are caused by the user’s ignorance of the elementary things that are written about in the manual. Therefore, before starting the machine, you must carefully study the manufacturer’s manual. In particular, to start the engine, you need to do the following sequential steps:

  • switch on the ignition button;
  • Press several times on the silicone button to pump the gasoline;
  • close the air flap;
  • set the throttle lever in the high rpm position;
  • First, make a slight jerk with the starter grip to feel the resistance of the engine, then yank sharply.

If the lawnmower starts but stops, move the choke shutter to the middle position and try again. When the engine starts, you need to turn off the gas and open the air valve, as the weed trimmer works only on a breather.

Important! The operation of your trimmer depends on different environmental influences. In hot weather, the machine needs to be given more time to cool down. When working in conditions of dense thickets or high vegetation, the engine also overheats strongly. Take a five-minute break every 15 to 20 minutes.

Causes of weak grass trimmer revolutions

If users complain about the grass trimmer that does not pick up speed, it means that it works fine at idle, but does not develop the necessary power when you press the gas. This can occur as a result of long downtime of the machine without activity. These problems are typical for gasoline machines, including Husqvarna 128r, STIHL FS 38 and Hitachi of different modifications.

When working with a trimmer, you need to monitor its behavior all the time. a drop in rpm and unusual noises signal malfunctions in the machine. Sometimes you give the gas, and the grass trimmer floats. In such cases, work must immediately be suspended, let the mechanism cool down and begin to search for possible problems. They can be of various nature, both technological plan, and external factors related to the conditions and characteristics of use of the machine.

External factors

Several factors, not related to its breakdown, influence the decrease in the lawnmower’s speed:

  • contamination of the filter due to dirt and dust particles entering the filter;
  • use of low-quality fuel;
  • Incorrectly prepared mixture (relevant for trimmers with two-stroke gasoline engines);
  • contamination of the muffler’s screen with particles of vegetation, soil and other objects.

in the second and third cases, formation of soot in the combustion chamber and clogging of carburetor elements.

Technical failures

Technical problems with the lawnmower mostly have to do with the fuel supply and ignition system. You can solve them yourself.

  • When the hand-held mower won’t start or stops, the problem may be related to the spark plug. Dark soot indicates poor carburetor adjustment and poor quality gasoline.
  • The cause of incorrect operation of the grass trimmer can be a clogged fuel hose. Filters also tend to get clogged.
  • Another internal problem. the muffler is covered with soot. This causes the grass trimmer’s rpm to drop drastically. The way out. clean the muffler.

Important! If the machine doesn’t run because of an engine breakdown, there can be serious problems. In this case, the faults that can be eliminated with your own hands include only the destruction of piston rings. For more serious engine problems, if there is no warranty, you should be prepared to visit a workshop.

The lawnmower stops when you press the gas, how to fix the breakdown

There can be a huge number of reasons why your lawnmower stops, we offer the most common ones, and we hope that you will find yours, and, of course, eliminate it. So, one of the situations is clogging of the air valve, the hole behind which the fuel is atomized. If you get something in it, most of the time it can be removed quickly and easily. This is the simplest cause, as well as a clogged filter. It should be washed in solvent, and then well blown out with compressed air. If it cannot be repaired. then order a new one from the KosiKosa parts store.

Similarly, the tool stalls when the throttle is depressed because the actuator is clogged. Another possibility: the fuel is not supplied in full, so you need to check or replace the fuel filter. Other possible causes of the brushcutter stalling when you give the gas are:

To all of these reasons for the mechanism stalling when you add gas, we’ll add some helpful tips on how to handle your brushcutter. First of all, you should read the manual before you start working with any technique. In this case, the consistency of gasoline and oil, competently prepared by you, as well as not to overheat the unit, and do not leave the gasoline for the winter, when you simply will not use the machine, plays an important role.

In the full operation of any tool plays an important role coordinated work of all its components. And if in one it’s the other is the piston or the carburetor. Owners of brushcutters, who want to use their tools at full power, need to understand that under the load, for which the machine is not designed, the whole mechanism or its individual parts can simply break. That’s why only competent and moderate use implies long productive work of any power tool.

Grass trimmer stalls at idle speed. causes and their solutions

To common situations, why the grass trimmer or lawnmower stalls, it is worth referring to its work at idle speed. Let’s get straight to the causes:

  • The heating of the gearbox and the fall of the drum speed due to the fact that the gasoline solution is not prepared correctly. The necessary proportion of 1:4;
  • Contamination of the carburetor;
  • The throttle plate is clogged;
  • when opening the choke (if you have done such an experiment) the air flow makes the mixture “poor”;
  • carburetor malfunction;
  • clogging of the air filter;

Insufficient amount of fuel, which is necessary for the work of the gasoline tool will entail a situation where at high revolutions, when increasing. the trimmer for grass works, and at idle stops. In the situation with the carburetor. the device will stall on cold start and “on hot”. For any user of a brushcutter. the professional and the amateur, it is important to understand that any malfunction of the tool can depend on a petty flight of a part, a loose mount or a blockage, as well as from a global breakdown of an important part of the mechanism.

Read more:  lawnmower does not run at idle speed

What to do if the gasoline trimmer does not pick up speed ?

If you have ever purchased a grass trimmer, working with gasoline, then you probably had to deal with the problem of turning on the grass trimmer, as well as with such a problem, as a gasoline trimmer does not gain momentum.

That is why this article is created.

So, what to do if the grass trimmer, which has been working for you for several years, suddenly just stops picking up speed. The engine just stops? In this case, you and I should consider a number of problems associated with stopping the work of the motor.

There are a variety of conditions that can cause a motor to stall. I’ve got a STIHL fs38 what’s the reason it won’t rev. Sometimes the cause of incorrect operation of the grass trimmer running on gasoline is a clogged air filter.

Exactly the filter is one of the main reasons why gasoline grass trimmer can stop working.

It often gets a variety of debris, dust particles get there, which also clog the filter, so it needs to be cleaned and washed every month, and maybe more often, it all depends on what power has a gasoline trimmer for the grass, and how often you use this device.

Gasoline trimmer (moto mower) carburetor repair does not work does not develop revolutions, loss of power

Chinese analogue Husqvarna lawnmower does not develop revolutions cause was very simple (see video)

If the performed operations with the filter you have done, but the work of trimmer for grass, working on gasoline, remained the same, gasoline trimmer does not pick up speed what to do?

Then you should try to remove the filter from the device in order to provide the so-called “relief” of the grass trimmer. Why the Chinese lawnmower does not develop revolutions, the reason Husqvarna. This should help.

The next and pretty common problem with gasoline trimmer is that it just stops, and does not give any sign of life.

In this case, the problem may be as follows:

The last and most common cause of gasoline grass trimmer breakdown is that the cable, which is located in the carburetor department, just fell asleep.

So make sure in advance that it is well stretched, but not to the limit, otherwise, when too much load on the gasoline trimmer for grass, this little rope may crack and then you’ll definitely have to go to the service center, and then even throw a lot of money down the drain.

STIHL 180 chain saw does not rev up or if you let go of the throttle trigger it continues to run without dropping the throttle. These problems are quite common. We’re trying to find out why this kind of fault is causing these kinds of problems. Also further consider how to diagnose if the chainsaw doesn‘t pull. Obst.

Oleo-Mac SpeedGo head tutorialMower oleo-mac 753 t details on the company website oleo-mac-755-master/ ! lawnmower oleo-mac 753 tCylinder capacity (cm. cc) 40.2 Power (kW/l).с.) 1.6 / 2.2 Weight (kg) 7.9 Tube diameter (mm) 28 Gas tank capacity (l) 0.75.

There are a number of different causes for this common problem. In working with the device, you may encounter both obvious malfunctions, with clearly traceable signs, and asymptomatic cases. The first option is the easiest to find the problem. If the grass trimmer does not pick up speed, and there are no clear signs of failure, you will need to consistently check the most typical cases of failure, and if you find the cause. to eliminate it.

The problem when the lawnmower does not pick up speed, occurs mainly with gasoline units. Equipment of different models, such as Husqvarna, Champion, STIHL, suffers from this.

With quality products such malfunctions are less common than with cheap ones from unknown manufacturers.

Some of the structural elements with which problems may be associated are accessible to visual inspection, but to check the functioning of the remaining components you will need to disassemble the brushcutter.

Using low quality fuel

Grass trimmer does not move when filled with low-quality fuel. For this reason, the engine can not start at all or work “jerkily The spark plug may not start at all or may work “jerkily” by varying the speed of the blade or line.

To determine the quality of the gasoline used by yourself, do the following steps.

  • Use a special wrench to remove the spark plugs.
  • Examine their working contacts for the presence of a red brick color: if it is there, then used fuel contains significant inclusions of additives.

The spark plugs often serve as indicators to identify problems with the combustion chamber of a gasoline engine, because they can be quickly removed and inspected.

If there is a deposit it is necessary to drain the fuel in the tank and replace it with high-quality fuel. the lawnmower in use should only be filled with petrol of the type recommended by the manufacturer in the instruction manual. Also it is necessary to clean deposit from spark plugs The hedge trimmer has not been properly oxygenated before it is installed.

Air or fuel filter is dirty

The next common reason for a lower rpm on a trimmer is that its air or fuel filter is dirty. In the first case, the problem is that the fuel-air mixture entering the combustion chamber Not enough oxygen in the hedge trimmer. as a result not all the gasoline is burned. That prevents the brushcutter from producing its maximum power.

In order to check whether the air filter is really to blame, you need to remove it (previously unscrewing the cover for this purpose) and turn on the lawnmower. If it works properly, then instead of a clogged filter element, you need to insert a new one.

oleo-mac, lawnmower, does

if the situation has not changed after all these operations the fuel filter should be checked. The essence of the problem is similar to the previous case, only instead of a lack of oxygen Not enough gasoline coming in for normal operation of the device. Fixing this problem is also done by simply replacing the filter element. Air and fuel filters are inexpensive. It is not difficult to change them yourself, and all the work does not take much time.

Keep in mind that without a fuel filter to operate the trimmer for grass is forbidden by the instructions, otherwise you will need a short time to repair the piston unit.

Problems with spark plugs

With constant use of the lawnmower the spark plugs get dirty and wear out over time. To check this, they are removed and inspected for fouling. The problem can be solved in two ways: if possible, restore the old spark plug, or simply install a new one in its place.

  • unscrew and wipe off the fuel from the candle;
  • dry it out without burning;
  • using a nail file or fine sandpaper, remove the soot from the plug and check the gap between the electrodes (should be 1 mm);
  • Collect the grass trimmer;
  • Start the lawnmower.

If the spark plug does not produce a spark after restorative manipulation at the right electrode spacing, you will need to check quality of connections elements of the electrical circuit of the device. When the wires are fine, you will definitely need to install a new part.

What to do if the lawnmower stalls when you press the gas

Most often, in the periods when the lawnmower stalls when adding gas, the cause will be the air damper, or rather its condition: it is clogged. Structurally, the part is located in the place where behind it the received fuel is atomized, and, accordingly, the product collects all the inclusions in the low-quality gasoline. To eliminate the problem, you just need to clean it. The same situation can occur with a clogged filter, but it is eliminated similarly. To summarize, let’s specify the reasons that lead the tool to stall when the gas is pressed:

  • Clogged air damper;
  • a clogged fuel filter, and when you give the gas, it is especially noticeable;
  • there is air leakage by the crankshaft oil seals;
  • the gasket between the cylinder and carburetor is damaged.

When you have cleaned, flushed and blown out the elements, but again, the lawnmower stalls when you press the gas. replace them with new ones, check the quality of fuel, as well as the literacy of the proportions of the mixture prepared. The tool will stall when the air damper is opened for the following reasons:

  • Malfunction of carburetor metering system.
  • Cracks in the fuel hose caused an air leak.
  • Problems with the oil seals.

During operation, situations occur when the lawnmower is subjected to a similar sudden stop at high revolutions. It occurs due to the following reasons:

  • due to problems with the circulation of the fuel mixture;
  • Air leakage;
  • The fuel intake hose is badly connected or cracked and unusable;
  • the valve in the gas tank lid is blocked or clogged;
  • carburetor malfunctions.

In most cases, though, the cause will be the carburetor and related filters, hoses. If you need cutting gear or trimmer heads, then buy them also gladly offer our website gasoline tools and accessories for them.

Why does the lawnmower stall at idle speed

Users often ask about stopping the lawnmower “while it is hot”, i.e. when the machine is running, works for a while, but then stops, and stops to cut the lawnmower. The reasons for this situation are as follows:

  • problems with the carburetor choke;
  • gasoline in the carb can even boil;
  • If the ignition is damaged, the grass trimmer will also become hot and stall.
Read more:  Lawn Mower Won'T Start Reasons

In each situation, check the parts for durability, and if they have already worn out, order new ones from specialists. One of the most popular situations: The lawnmower stops mowing at idle speed. This happens for reasons:

  • the carburetor is out of tune or has been improperly adjusted;
  • the carburetor is dirty;
  • the air filter is heavily contaminated;
  • Use of unsuitable fuel may cause a reduction in gearbox RPM;
  • Your grass trimmer may be stalling at idle if the throttle is clogged;
  • Air has entered the carburetor system;
  • the lawnmower gets a lack of gasoline to work fully, so it stops.

We’re sure you’ve gotten the most useful information and found a solution to your individual situation through our technical advice. All parts, like brushcutter starters, its components and accessories are available at the lowest price in the country. Hurry up!

the lawn mower stops at high revolutions on gas

Perhaps the most common complaint about gasoline trimmers is “the lawnmower stops working”.

Naturally, the precondition for this can be a fairly severe malfunction. lawnmower does not develop speed.Why else would a Chinese lawnmower not pick up. Lawnmower does not develop speed, why the Chinese mower does not develop speed. But in most cases, the situation is even simpler than it seems at first glance.

To cope with such a malfunction, first try, without assistance of others to understand its causes, because, having found the cause, with a malfunction to fight even easier, and sometimes it even self-liquidated.

In fact, circumstances, this is when the lawnmower stalls at high revolutions. There are many of these circumstances.

Another is the presence of defects in the power system.

In this case, the lawnmower will stall at idle speed. No tangible results did not give. Why the Chinese mower does not develop speed. Why does my lawnmower idle? Why the lawnmower revs. Can not get it off the ground.and revs from the floor. Misalignment or improperly adjusted carburetor can lead to power system dilemmas.

Why the Chinese lawnmower does not develop speed ?

Chinese lawnmower analog Husqvarna does not develop speed the reason was very simple (see video)

To razregulirovaniya can lead to vibrations that occur during the operation of the lawnmower.

Incorrect adjustment of the lawnmower, however, can be corrected by simply adjusting it according to the requirements specified in the instruction manual.

In addition, sometimes gasoline grass trimmers can stall because the valve located in the gas tank lid is simply clogged or stuck.

To find out, try using the mower by loosening the gas tank cap.

If it operates properly in this mode, clean the valve.

In this article, we will look at the problem of why the lawn mower stops and how to deal with the problem.

Even a very good brushcutter can have problems starting. For example, it starts and stops. This most likely indicates a problem with the filters. air or fuel filter. If it stalls at idle rpm, it is likely that the brushcutter has a problem with the carburetor, which overheats too quickly and can no longer cope with the formation of a quality air-fuel mixture.

If the grass trimmer stalls when you step on the gas, t.е., when the engine starts to run at high revs, it indicates a problem with the carburetor or fuel filter.

Problems with the brushcutter’s air filter will be indicated by the fact that it stops working when the air damper is opened.

Note that the online store “Well Part” offers you for the widest range and the best prices.

How to adjust the carburetor on the gasoline mower

Before adjusting, the filters should be thoroughly cleaned according to the maintenance in the manual.

Further adjustment of the lawnmower carburetor with your own hands is performed by the adjusting screws. There are three in total:

right (L). fuel mixture adjustment for low revs.

You need to find the maximum rpm at idle. to do this, turn the screw (L) slowly to the right and to the left.

To adjust, turn the screw a quarter of a turn necessarily counterclockwise.

Lower filter (T). adjusts engine when idling.

  • stable operation of the cold engine;
  • Not over revs on a hot engine;
  • for the trimmer head a large speed margin;
  • stable operation of the engine when changing its position (sudden raising or lowering of the blade).

left (L). fuel mixture adjustment at high revs. (The screw is the last one to be adjusted).

From the left screw (H) depends on the overall adjustment of maximum speed, engine power, temperature and gasoline consumption.

Adjusting the carburetor of the lawnmower with the last screw is done as follows:

  • Open the throttle all the way to full throttle. Turn the screw clockwise until the revolutions are low (in this case, orient by ear).
  • Turn the screw as slowly counter-clockwise as possible until the engine runs irregular.
  • Then turn back just a little bit, barely hearing a steady, even operation.
  • For a more obvious application of skills, it’s more convenient to review the work of an experienced user:

What to do if the gasoline trimmer does not pick up speed ?

If you’ve ever purchased a gasoline-powered grass trimmer, you’ve probably had to deal with the problem of the grass trimmer turning on, as well as such a problem as the gasoline trimmer won’t pick up.

That’s why this article was created.

So, what to do if the grass trimmer, working for you for more than the first year, suddenly just stops picking up speed. and the motor simply stops? In this case, you and I should consider a number of problems associated with stopping the motor.

The engine can stall under different circumstances. I have a problem STIHL fs38 problemmatrimmer what is the reason does not develop speed. Sometimes the cause of the malfunction of a gasoline-powered grass trimmer is a clogged air filter.

It is the filter is one of the most important reasons why the gasoline grass trimmer can stop working.

It often gets a variety of debris, dust particles get there, which also clog the filter, so it needs to be cleaned and washed every month, and maybe more often, it all depends on what power has a gasoline trimmer for the grass, and how often you use this device.

oleo-mac, lawnmower, does

Gasoline grass trimmer (moto mower) carburetor repair does not work does not develop revolutions, loss of power

Chinese lawnmower analog Husqvarna does not develop speed the reason was very simple (see video)

oleo-mac, lawnmower, does

If you have done the operations with the filter, but the work of the gasoline-powered grass trimmer remains the same, the gasoline trimmer does not pick up revolutions what to do?

Then you should try to remove the filter from the device in order to provide the so-called “relief” of the grass trimmer. Why the Chinese lawnmower does not develop speed, the reason Husqvarna. Should help.

The next and fairly common problem when working with a gasoline trimmer is that it just stops, and does not give any signs of life.

In this case, the problem may lie in the following:

The last and most common cause of gasoline grass trimmer failure is that the cable, which is located in the carburetor department, just fell off.

So make sure beforehand that it is well stretched, but not to the limit, otherwise if too much load is put on the petrol grass trimmer, this small rope can crack and then you will definitely have to go to a service center and then throw a lot of money down the drain.

STIHL 180 does not provide an RPM or if you let go of the throttle trigger it continues to run but does not release the throttle. These problems are quite common. What are the causes of these problems? Also below we’ll look at how to diagnose if the chainsaw won’t pull. About.

Oleo-Mac SpeedGo head trimmer oleo-mac 753 t more on the oleo-mac-755-master/ website ! Lawn trimmer oleo-mac 753 t Cylinder capacity (cm. Cube) 40.2 Power (kW/ltr).с.) 1.6 / 2.2 Weight (kg) 7.9 Tube diameter (mm) 28 Gas tank capacity (l) 0.75.

What do I do if my ride-on lawn trimmer stops cutting when the throttle is depressed??

So, why does the grass trimmer stall when you step on the gas ? There may be several reasons for this malfunction.

  • Carburetor malfunctions after a bad winter or too much use of the brushcutter. Gasoline grass trimmer works on the air-fuel mixture, which he prepares the carburetor. If not properly adjusted, this mechanism prepares a lean mixture, which is not able to provide the engine with high enough revolutions. You can tell a problem with the carburetor by the characteristic vibrations of the lawnmower.
  • You will know that the fuel filter is clogged by the fact that the grass trimmer starts and stops. In other words, the fuel flow is enough to start the brushcutter but not enough to keep the engine running. You may be able to solve the problem by loosening the valves on the filter. If not, you should wash the filter in solvents and blow it out with compressed air. If this does not solve the problem, then you should buy a new fuel filter.
  • If the engine stalls at speeds close to maximum, there may be a problem with the breather, which regulates air access to the gas tank. When fuel is consumed too quickly, typical when you give gas, a rarefied pressure builds up in the gas tank, which reduces the flow of fuel to the engine.
  • Engine stalls when the choke is open. The problem is again related to the carburetor, which prepares a lean air-fuel mixture due to an excess of air that is not able to provide engine operation.
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The lawnmower shuts off when it is hot? There is a solution!

lawnmower stops when hot. this means that there is already some fuel in the engine to start the engine, but after 5-10 minutes of operation, it stops working. This behavior indicates a problem with the fuel filter.

There are two solutions. preventive and radical. Preventive is to try to clean it, which will consist of cleaning the contamination with a solvent, and then blowing the filter with a jet of compressed air.

But if it is heavily contaminated, you can only eliminate the breakdown by applying a radical solution. the purchase of a new fuel filter.

And this is where the Well Part online store will help you. We have all necessary spare parts for brushcutter repair of all popular manufacturers. So, in particular, you can buy a trimmer head at a very favorable and attractive price.

Where to Start to Diagnose a Trimmer

If the lawnmower does not start or immediately stops after starting, you must consistently check all major components and units. The check algorithm is as follows:

  • Fuel tank (fuel quality);
  • The spark plug and the spark plug conduit;
  • Air filter;
  • Fuel filter;
  • Breather;
  • Exhaust port.

These units are most often the source of major problems, which can be eliminated after a thorough inspection.

Check the fuel mix

Before starting the engine of a gasoline grass mower, check the presence, and quality of the fuel mixture. Don’t save, don’t be greedy, and don’t be “smart” about it. Repair or replacement of the piston group will cost you too much (sometimes up to 70% of the cost of a new tool). I bought it for home. But it is better to use oil-fuel mixture only according to the manual. Calculate its quantity from actual needs. Excess gasoline left over from work loses its qualities over time.

Carry out the diagnostics of a spark plug and the spark plug channel

If the quality of the fuel mixture is not in doubt, but the lawnmower stops when starting, the cause may be a primed spark plug. A simple spark plug wrench (every motorist should have one) and a spare spark plug will do for repair.

  • The candle is unscrewed and wiped clean;
  • Thoroughly dry it (do not ignite it);
  • Excess fuel in the chamber is drained through the spark plug hole and dry it;
  • Clean old plug from soot with a file or a lady’s file;
  • We expose a gap with a distance of 1 mm (it is possible to check it with any coin);
  • Put everything back in place and try to start the grass trimmer.

Dry the channel at least 30-40 minutes. Otherwise there is a risk of re-fueling and a new spark plug.

In case the spark plug is working, the socket where it is located is completely dry, and the lawnmower does not want to start, lubricate the threaded connection with gasoline. It should be slightly dampened. No matter how good the spark is, there is nothing to ignite in the dry chamber.

If the grass trimmer engine still does not start, you should rule out such a cause as a lack of spark due to poor contact between the spark plugs and the high-voltage wire. If the connection is good, but still no spark, you probably “flew” the ignition unit. You can’t do without a master here, because. к. The part is not repairable, but is sold as a complete unit.

Lawn mower filter diagnosis

Another reason for a gasoline grass trimmer to stall could be the air filter. To rule it out, try removing the filter and starting the grass trimmer without it. If it succeeds, then you’ll have to replace the air filter with a new one, or at least blow out and thoroughly clean the old one.

Do not start the gasoline trimmer for grass can be due to pollution of the fuel filter. This is the next step in our algorithm. Here we check the condition of the filter element and, if necessary, replace it with a new one. When changing the suction pipe do not leave the suction pipe without filter at all, it is forbidden by any manual. Haste may result in the repair of the engine piston group.

Breather and exhaust port

Often, “delicate” brand models of chain saws do not start and choke due to a clogged breather. The main function of this element is to equalize the pressure in the gas tank. When this unit is clogged, a vacuum is created in the tank, preventing the flow of fuel. The problem can be corrected by cleaning the breather plug. You can use an ordinary needle for cleaning.

Normal work of a combustion engine can be broken because of dirt in the exhaust channel or clogging of the silencer mesh. This problem is more common on older models. The problem can be solved by traditional cleaning and removal of the anti-sparking grid.

complex causes of mower failure

If a step-by-step troubleshooting procedure does not work and your lawn mower still won’t start or stops, it’s worth examining the carburetor and the engine itself. A clogged carburetor can be one of the causes, unstable operation of the tool. There are three main problems that can be identified here:

  • Clogged ducts or nozzles. All this is cleaned with special washes or blown with a powerful jet of compressed air from a compressor. Do not use needles and wire, as the passage sections can be damaged;
  • Wear of the carburetor gasket. The way out is to replace the failed gasket;
  • Leakage leakage. To check this figure, you can use an ordinary household tonometer, replacing the pressure gauge on it with a suitable. Watch the readings: if they do not change. everything is fine, and if the pressure starts to fall, then some part of the carburetor is defective. You must find it and replace it with a new one.

If everything is okay with the carburetor, the gasoline grass trimmer may not start because the piston group is worn. If you find chips, scratches or scrapes, on the piston or cylinder, they should be replaced. The piston rings must be checked. A slight play of the piston when rocking the connecting rod is an indication that it is time to change the rings. This procedure is best entrusted to the specialists of the service center.

When to call for repair

If the machine is under warranty, at the first sign of malfunction you can safely take it to a specialized repair shop. Repair will be made free of charge, regardless of the nature of the damage, if it was not the fault of the owner. In case of a breakdown in the engine it is better for a non-technical person to immediately contact a specialist. In any case, the degree of seriousness of problems with the unit is determined by the user himself.

To recap. Both gasoline and electric grass trimmers are built for years of reliable service. Most of the problems described above occur due to the owner’s lack of attention to his helper. With strict adherence to the requirements from the manufacturer and regular maintenance, the hand-held mower will work rhythmically and without interruption.

Reasons for STIHL electric brushcutters not working at full throttle

RPM problems can also occur with an electric ride-on grass trimmer. The causes here are completely different from those of fuel mowers.

You can fix it yourself

STIHL electric weed trimmers do not develop the power they need because:

  • The voltage in the network is below the required minimum for the device more than 10%;
  • The smooth start (if such a system is available) has failed;
  • a defect in the brush unit has occurred;
  • The motor winding has caught fire;
  • Rotating parts can sometimes get jammed.

To adjust the voltage, you should first check its power. If it is not up to standard, the power has to be increased with a regulator.

Only have the softstarter repaired by a service center.

If the brushes are worn out simply replace them. If new parts are fitted, it is advisable to clean all surfaces with which they come into contact.

To adjust the voltage it is worth checking the power first.

If motor windings are burning out, the motor needs to be changed.

Jamming of rotating parts can be caused by many things. To get rid of them, the whole drive unit should be reconsidered.

The last problem is also common with other STIHL pruning shears and can be solved by sharpening the blade.