A gas-powered scythe is a useful thing for owners of garden plots and lawns, and when the trimmer suddenly stalls, the work of clearing the area from grass stops. The device itself is a rather complex mechanism, so there are many different reasons for its breakdown. The most frequently encountered problems are contained in the operating instructions. You should know the reasons why the trimmer stalls in order to effectively repair the device yourself.
Problems with a lawn mower, related to the fact that this device does not start, are classified in a certain way by service specialists. They highlight faults with the following mechanism components:
- an engine in which the piston and bearings may wear out or fail, or the crankcase may crack;
- fuel supply system, in which case the filter may become clogged or there may be problems with the carburetor;
- mechanical damage to wires, tubes, hoses;
- ignition circuit.
To correctly determine the unit where the breakdown occurred, you need to pay attention to the circumstances under which the trimmer stalls.
When you press the gas
If the lawn mower stops when you press the gas, the reasons may be the following.
- The most common option is carburetor adjustment failure
, which occurs when there is significant load on the drive, after prolonged inactivity of the mechanism, or when it is used under difficult conditions. - Fuel valve clogged
, which can be eliminated by loosening it, as a result of which gasoline begins to flow normally through the system. - Loosening and hanging of the cable located in the carburetor. The fuel hose
may also to the point of breaking due to significant load. - The breather
(check valve) is clogged, resulting in no fuel flowing into the tank.
If the problem is related to the carburetor unit, then it can be recognized by the appearance of vibrations from the lawn mower.
. When a hose bursts or a cable stretches, these components are replaced.
Carburetor trimmer
At high speeds
When the scythe stalls at high speeds, this is due to the following problems:
- clogged or stuck valve located on the gas tank cap;
- the carburetor has become misregulated due to vibrations that occur during operation of the mechanism;
- problems with the circulation of the fuel mixture;
- atmospheric air suction;
- the fuel intake hose is cracked or loosely connected.
The carburetor is adjusted
, relying on the operating instructions for the trimmer. To adjust it, it is often enough to loosen the tightening of its housing. If there are problems with the circulation of the fuel mixture, then it can gradually enter the carburetor. After it is exhausted, the engine stalls at high speeds.
At idle
At idle, common reasons for the trimmer stopping are the following:
- contamination, misadjustment or incorrectly adjusted carburetor adjustment;
- air filter clogged;
Replacing the air filter of a brush cutter
Trimmer air filter
- reduction in gearbox speed when it heats up, which is a consequence of using an unsuitable fuel mixture;
- throttle valve clogged;
- air entering the system;
- There is not enough fuel to operate the trimmer.
If the problem area is the carburetor, then the equipment will stop both during a “cold” and “hot” start.
Causes
Trimmers are reliable and durable (with proper care, of course). Most often, malfunctions occur due to contamination of structural elements.
If the engine of your lawn mower does not start, does not pick up speed, does not reach the power you need, or suddenly stalls, the reason may be:
- low-quality fuel (fuel mixture), this may be due to long-term storage or non-compliance with the recipe for preparing the mixture;
- grass is wound around the shaft of the fishing line/knife head;
- clogged air filter/muffler;
- carburetor imbalance.
Immediately after starting
The unit may stall immediately after starting if the carburetor is misaligned or incorrectly configured - this causes uneven fuel supply
. The result of this is that the device begins to vibrate distinctly. To troubleshoot problems, the carburetor is reconfigured following the instructions for the mechanism.
Also, the engine stops when the valve becomes clogged.
supplying fuel. In such cases, simply cleaning it is enough. If the lawn mower started working at first, but then immediately stalled, then fuel may be supplied to the carburetor unit with some difficulty. Loosening the valve helps solve the issue, which ensures free circulation of the mixture in the system.
Stopping can also be caused by air leaks
if there is mechanical damage to the hose (holes, cracks) that collects fuel. In this case, you should increase the drive speed to quickly expel air bubbles from the system.
When opening the air damper
It happens that the unit stalls when the air damper is opened, idling normally. This is due to air leaks from the system caused by cracks in the fuel hose.
or problems with seals. The carburetor metering system may also malfunction, and the lawn mower will stop after opening the damper.
Fuel hose in carburetor
All possible reasons why the lawn mower stalls and how to eliminate them are contained in the following video
There are many reasons why a lawn mower stops, but the most common are malfunctions associated with its carburetor. They can arise in any case. The most problematic option is when a serious breakdown occurs and you will need to purchase new parts or replace the lawn mower.
In order for the trimmer to work properly for a long time, you must strictly follow the operating instructions. It is necessary to refuel the unit with a fuel mixture suitable for its composition; the device must operate under moderate load.
Troubleshooting Methods
The first three reasons are quite easy to eliminate. If the problem is a mixture, you need to empty the old fuel from the tank, prepare a new emulsion from high-quality gasoline and motor oil (if your engine requires a mixture) and pour it into the fuel tank. If the trimmer runs on pure gasoline, everything is even easier.
In the second case, it is necessary to carefully free the trimmer parts from the wound grass.
If the filter is clogged, you can try washing it. If this procedure does not bring any effect, replace it with a new one.
The last reason why your lawn mower is not working properly will require a little more knowledge and skill on your part.
To properly adjust the carburetor of a lawn mower, you must follow a certain procedure. First of all, thoroughly clean the air filter. The easiest way is to wash it (it is advisable to spray the filter with water regularly after 9–10 hours of use).
After this, in the diagram of your trimmer, which is in the operating instructions for the device, find the adjustment screws. Usually there are three of them: the first is responsible for fuel supply, the second is for idling, and the third is designed to limit the number of maximum engine speeds.
Next, turn on the unit and wait for the engine to warm up.
Slowly tighten the first adjustment screw (fuel mixture supply). Catch the moment when the engine begins to stall and turn the screw in the opposite direction by 45 degrees. If you don’t have time and the engine stalls, the screw should be turned 90 degrees. Open the throttle and watch the revs increase. Next, you should slowly unscrew the screw (each turn is the same 45 degrees) until the moment when, at full throttle, the engine begins to firmly produce maximum revolutions.
The second screw, as mentioned above, controls the engine speed at idle. By loosening it, you reduce the number of revolutions, and by tightening it, you increase it. The screw must be adjusted so as to ensure reliable operation of the motor at low speeds. For better starting, speed up the engine a little. At the same time, make sure that the motor makes several dozen revolutions before the knives/reel with fishing line starts moving. If the engine starts poorly, tighten the screw a little.
After you have adjusted the first two screws, test the operation of the device at maximum engine speed. If necessary, you can limit it (maximum) - this will protect the motor from “boiling.” To do this you need to take care of the third screw. Unscrew the fixing nut until the adjusting screw can be easily turned. To increase the maximum number of revolutions, you need to loosen the screw; to decrease it, on the contrary, tighten it. Secure the position of the screw with a nut. Test the operation of the motor again.
Check the position of the screws regularly - the high level of vibration inherent in lawn mowers can cause them to move unintentionally.
Remember that carburetor adjustment is not a final procedure. During the operation of the lawn mower, you will most likely have to tinker with it more than once, because an unbalanced carburetor means increased fuel consumption and rapid failure of spark plugs, not to mention a decrease in the power and performance of the device.
The best trimmer models according to buyers in 2018
Trimmer SOYUZ BTS-9252L
Trimmer Hammer MTK33LE
Trimmer PATRIOT PT 3555 ES
Trimmer Huter GGT-800S
Trimmer Interskol KB-25/33V
What to do if the gas trimmer does not gain momentum
?
If you have ever purchased a trimmer that works with gasoline, then you probably had to deal with the problem of turning on the trimmer, as well as with such a problem as the gas trimmer does not gain momentum
.
That is why this article was created.
So, what should you do if the trimmer that has been working for you for many years suddenly just stops gaining momentum
, and the engine simply stalls? In this case, you and I should consider a number of problems associated with the engine stopping.
The engine may stall under various circumstances. The petrol mower does not develop speed, that's the reason. | Funnycat.tv. Sometimes the cause of incorrect operation of a trimmer powered by gasoline is a clogged air filter.
The filter is one of the most important reasons why a gasoline trimmer
.
Very often various debris gets into it, 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 how much power the gasoline trimmer has, as well as how much often you use this device.
How to start a STIHL brush cutter
The main steps on how to start a STIHL :
- Before operating a gasoline trimmer, you should read the instructions and check the STIHL for the availability of each spare part. Then you can collect it.
- An important step is fuel preparation and refueling. Prepare the mixture in a measuring container. Gasoline and oil are poured into it in the specified ratio. Using a funnel, the mixture is poured into the fuel tank.
- When starting for the first time, turn on the ignition without opening the choke. The device should be placed on a flat and smooth surface for stability. Now you need to sharply pull the cord 3 to 5 times. The air damper can be opened in any case: the engine has started or not.
READ Brushcutter Doesn't Develop Power
The first launch may require up to 15 pulls. After starting the engine, it is worth idling to warm up. After some time it is stopped with the Stop button.
Note! This instruction is universal, since to start the STIHL , you need to follow similar steps.
In the case of starting an electric trimmer, everything is much simpler: you need to read the instructions and act in accordance with them. Instead of fuel there is electricity. The device operates from the mains, so it is important to provide sufficient power so that the trimmer can gain momentum.
After each use, both gasoline and electric trimmers require a thorough inspection.
By following the instructions, you can quickly fix any minor damage yourself. But sometimes you cannot start the unit with your own hands. In this case, it is better to seek professional help, especially if it relates to a problem with the engine and the development of speed in the trimmer or lawn mower.
The STIHL chainsaw does not develop speed and stalls.
In order to carry out a true high-quality restoration of the working condition of the STIHL yourself, you need to accurately determine the reasons for the breakdown. Since this chainsaw is a mechanism driven by an internal combustion engine, the main malfunctions are associated with this unit.
The most common malfunctions encountered in the operation of STIHL are the following:
- no engine start;
- unbalanced operation of the internal combustion engine immediately after startup, under the influence of which, after short-term operation, the unit spontaneously turns off;
- the running engine does not reach full power;
- oil is leaking.
STIHL chainsaw carburetor design
The brush cutter does not gain momentum, the cause of the malfunction and its elimination
Description.
If you have completed the operations with the filter, but the operation of the trimmer powered by gasoline remains the same, the gas trimmer does not gain momentum, what should you do?
Then you should try to remove the filter from the device in order to provide the so-called “lightening” of the trimmer. The petrol mower does not develop speed, that's the reason. | Doovi. It should help.
The next and quite common problem when working with a gasoline trimmer is that it simply stalls and does not show any signs of life.
In this case, the problem may be as follows:
The last and most common reason for a gasoline trimmer to break down is that the cable, which is located in the carburetor section, simply slept.
Therefore, make sure in advance that it is well tensioned, but not to the limit, otherwise if there is too much load on the gasoline trimmer, this small cable may crack and then you will definitely have to contact a service center, and then also throw a lot of money down the drain.
Causes
Trimmers are reliable and durable (with proper care, of course). Most often, malfunctions occur due to contamination of structural elements.
If the engine of your lawn mower does not start, does not pick up speed, does not reach the power , or suddenly stalls, the reason may be:
- low-quality fuel (fuel mixture), this may be due to long-term storage or non-compliance with the recipe for preparing the mixture;
- grass is wound around the shaft of the fishing line/knife head;
- clogged air filter/muffler;
- carburetor imbalance.
READ How to Change Line on Stihl Trimmer Video
Engine problems
Problems with the engine are more serious. There are several possible problems:
- carburetor damaged;
- problems with the drive.
In the case of a carburetor problem, you should first pay attention to the condition of the cable. It may be weakened, which led to the problem. A simple cable adjustment is required here.
If this does not help, then you need to check the usage settings. The specified operating standards can be found in the technical data sheet of the device. Sometimes it is enough to disassemble the device: wash, clean and reassemble.
Note! The solution to the problem with the carburetor may be to purchase a new element or contact the service for professional services.
The trimmer drive is subjected to a full check only if manipulations with the carburetor do not produce the desired result.
The lawn mower stalls at high speeds on gas
Perhaps the most common complaint related to gas trimmers is: “The trimmer stalls.”
Naturally, the prerequisite for this may be a fairly severe malfunction. The petrol mower does not develop speed, the reason is back. But in most cases the situation is even simpler than it seems at first glance.
To cope with such a problem, first try to figure out its causes on your own, because once you find out the reason, it’s even easier to deal with the problem, and from time to time it even self-destructs.
In essence, the circumstances are when the lawn mower stalls at high speeds
, there are quite a lot of these circumstances.
Another one is the presence of defects in the power system.
Some tricks for working with a gas trimmer.
Summer time has arrived, and lawn mowers are making their usual noise in the garden plots. Great tool, powerful and mobile. Using a gasoline trimmer, you can mow the grass and get rid of dried weeds. However, there are times when the lawn mower does not start, operates intermittently, or does not develop full power. There is certainly no time for work here! And as they say, you pull the starter handle more than you mow.
Difficulties with starting arise not only for seasoned lawn mowers, but also for new ones. What to do in this situation? There is only one way out - listen to the advice of experts and take advantage of their practical experience!
Gasoline trimmer (motor mower) carburetor repair does not work does not develop speed, loss of power
Description.
In this case, the lawn mower will stall at idle speed. The petrol mower does not develop speed, the reason | funnydog.tv. Misadjustment or incorrect adjustment of the carburetor can lead to dilemmas with the power system.
Misadjustment can be caused by vibrations that occur during the operation of the lawn mower.
Incorrect adjustment of the lawn mower can be corrected by simply adjusting it in accordance with the requirements indicated in the instruction manual.
In addition, from time to time gasoline trimmers may stall due to the fact that the valve located in the gas tank cap is simply clogged or stuck.
To find out, try using the scythe while loosening the gas cap.
If the device operates properly in this mode, clean the valve.
Moreover, the lawn mower may stall due to the disgusting flow of fuel into the carburetor
Why then does the device start, you ask?
Cause
This consists in the fact that at first the fuel gradually flows into the carburetor and there is enough of it to operate at increased power.
But then it runs out and at high speeds the engine begins to stall.
As for the carburetor, the problem here may also be that its body is very overtightened.
The reason why the lawn mower stalls at high speeds
on gas, there may also be an air leak.
We are talking about the likely presence of a place through which air can pass during the heating process of the motor.
Besides everything else, don't forget to check the fuel pickup hose. The trimmer does not develop speed. One of the reasons. The problem may be that it holds poorly or is generally cracked.
These are the main reasons why a lawn mower may stall.
What to do if the lawn mower starts and stalls?
Now let's look at all the problems described above in more detail.
- The lawn mower stalls when you press the gas.
- The brush cutter stalls when it gets hot.
- The brushcutter starts and stalls.
- The brush cutter stalls at idle speed.
In principle, there can be a huge number of reasons why the engine of a brush cutter stops working when you press the gas. Here we will consider only the most common ones.
Perhaps the air damper is simply clogged. And to eliminate the problem, it will be enough to simply clean the air damper. Also, the engine stalls due to a clogged air filter. To clean it, the filter should first be washed in a solvent and then blown with a stream of compressed air.
A similar procedure should be carried out with a clogged fuel filter, which prevents the flow of fuel in the required volume when the engine speed increases.
The engine may stall for other reasons. Firstly, the spacer located between the cylinder and the carburetor wore out, and secondly, the crankshaft seals began to suck in air.
We have already indicated that in this case the problem is in the carburetor. Due to increased temperatures, gasoline begins to boil in it, which is why the air-fuel mixture ceases to form or its quality critically decreases.
In addition, this problem may arise due to the fact that the carburetor is equipped with a rotary valve rather than a disc valve. If the problem has become chronic, then it should be solved radically - by purchasing a new carburetor with a disc valve.
Most likely, access to the fuel tank is difficult or completely absent, which is why a zone of low pressure is formed in it, due to which the engine stops receiving fuel in the required quantity and because of this you stop working.
The engine may stall at idle for the following reasons:
- Gearbox overheats
News oneNews oneNews oneNews oneNews onegot ready and began to prepare a not quite normal gasoline solution, which is why the speed on the drum began to drop;
- The carburetor is clogged;
- The carburetor is not adjusted correctly;
- The throttle valve is dirty;
- The choke is open, causing too much air to enter the carburetor, making the air-fuel mixture lean;
- The air filter is clogged.
To fix most problems you will need spare parts, and Well Part is ready to provide them to you at the best price.
Troubleshooting Methods
The first three reasons are quite easy to eliminate. If the problem is a mixture, you need to empty the old fuel from the tank, prepare a new emulsion from high-quality gasoline and motor oil (if your engine requires a mixture) and pour it into the fuel tank. If the trimmer runs on pure gasoline, everything is even easier.
In the second case, it is necessary to carefully free the trimmer parts from the wound grass.
If the filter is clogged, you can try washing it. If this procedure does not bring any effect, replace it with a new one.
The last reason why your lawn mower is not working properly will require a little more knowledge and skill on your part.
To properly adjust the carburetor of a lawn mower, you must follow a certain procedure. First of all, thoroughly clean the air filter. The easiest way is to wash it (it is advisable to spray the filter with water regularly after 9–10 hours of use).
After this, in the diagram of your trimmer, which is in the operating instructions for the device, find the adjustment screws. Usually there are three of them: the first is responsible for fuel supply, the second is for idling, and the third is designed to limit the number of maximum engine speeds.
Next, turn on the unit and wait for the engine to warm up.
Slowly tighten the first adjustment screw (fuel mixture supply). Catch the moment when the engine begins to stall and turn the screw in the opposite direction by 45 degrees. If you don’t have time and the engine stalls, the screw should be turned 90 degrees. Open the throttle and watch the revs increase. Next, you should slowly unscrew the screw (each turn is the same 45 degrees) until the moment when, at full throttle, the engine begins to firmly produce maximum revolutions.
The second screw, as mentioned above, controls the engine speed at idle. By loosening it, you reduce the number of revolutions, and by tightening it, you increase it. The screw must be adjusted so as to ensure reliable operation of the motor at low speeds. For better starting, speed up the engine a little. At the same time, make sure that the motor makes several dozen revolutions before the knives/reel with fishing line starts moving. If the engine starts poorly, tighten the screw a little.
After you have adjusted the first two screws, test the operation of the device at maximum engine speed. If necessary, you can limit it (maximum) - this will protect the motor from “boiling.” To do this you need to take care of the third screw. Unscrew the fixing nut until the adjusting screw can be easily turned. To increase the maximum number of revolutions, you need to loosen the screw; to decrease it, on the contrary, tighten it. Secure the position of the screw with a nut. Test the operation of the motor again.
Check the position of the screws regularly - the high level of vibration inherent in lawn mowers can cause them to move unintentionally.
Remember that carburetor adjustment is not a final procedure. During the operation of the lawn mower, you will most likely have to tinker with it more than once, because an unbalanced carburetor means increased fuel consumption and rapid failure of spark plugs, not to mention a decrease in the power and performance of the device.
What should I do if the trimmer stalls when I press the gas?
So, why does the trimmer stall when you press the gas? There may be several reasons for this problem.
- The carburetor has become out of adjustment after an unsuccessful winter or after using the lawn mower too intensively. A gasoline trimmer operates on an air-fuel mixture prepared by a carburetor. If adjusted incorrectly, this mechanism prepares a lean mixture, which is not capable of providing the engine with sufficiently high speeds. You can tell about a problem with the carburetor by the characteristic vibrations of the lawn mower.
- You will know that the fuel filter is clogged by the fact that the trimmer starts and stalls. In other words, the flow of fuel is enough to start the lawn mower, but not enough to keep the engine running. It may be possible to solve the problem by loosening the valves on the filter. If not, you should wash the filter in solvents and blow it with compressed air. If after this the problem is not solved, then you should purchase a new fuel filter.
- If the engine stalls at speeds close to maximum, then there may be a problem with the breather, which regulates the flow of air into the gas tank. When fuel is consumed too quickly, which is typical when you step on the gas, a rarefied pressure forms in the gas tank, which reduces the flow of fuel to the engine.
- The engine stalls when the throttle is opened. The problem, again, is related to the carburetor, which, due to excess air, prepares a lean air-fuel mixture, which is not capable of ensuring engine operation.
Features of the trimmer
All trimmers are classified according to the type of power supply: gasoline or electricity (from the mains or battery). It should be noted that gasoline mowers are superior to their electric and battery-powered counterparts in many ways. Although they all perform similar functions, the differences in performance, maneuverability and efficiency are very noticeable. However, the general principle of operation of all types of manual mowers is almost the same - the devices are equipped with engines (two- or four-stroke internal combustion engines or electric motors) that drive the cutting unit (a reel with fishing line or a metal disk). All elements are mounted on a straight or curved rod, including a handle for controlling the trimmer, on which the main buttons are located .
Since the problem of low speed is more typical for gasoline versions of trimmers, more attention will be paid to them. Thus, the brush cutter is very comfortable to use and unpretentious in maintenance. Moreover, most of its malfunctions are caused by the user’s ignorance of the basic things described in the instructions. Therefore, before starting to operate the unit, you must carefully study the manufacturer’s manual. In particular, to start the engine, you must perform the following sequential steps:
- turn on the ignition button;
- press the silicone button several times to pump gasoline;
- close the air damper;
- set the throttle lever to the high speed position;
- First make gentle jerks with the starter handle to feel the resistance of the engine, then pull sharply.
If the lawn mower starts but stalls, you need to put the air damper in the middle position and try again. When the engine starts, you need to slow down the gas and open the air damper, since the trimmer functions only on suction.
Important! The trimmer's operating mode depends on various environmental influences. In hot weather, the unit needs to be given more time to cool down. When operating in dense thickets or high vegetation, the engine also overheats greatly. It is necessary to take five-minute breaks every 15-20 minutes.
Does your lawn mower stall when it's hot? There is a solution!
The lawn mower stalls when it is hot - this means that there is already a certain amount of fuel in the engine to start the engine, but after 5-10 minutes of operation, it stops working. This behavior of the engine indicates problems with the fuel filter.
This article will solve the problem of lawn mowers when they stall at high speeds on gas
When purchasing a lawn mower, you need to be prepared for the fact that, like all other similar tools, it may also develop breakdowns that will require repair.
But you shouldn’t immediately run to the service center and pay a lot of money to the technicians who convince you that there is a serious malfunction in the device.
The lawn mower stalls at high speeds on gas
Perhaps the most common complaint related to gas trimmers is: “ Gasoline trimmers
stalls."
Naturally, the prerequisite for this may be a fairly severe malfunction. The two-stroke trimmer engine does not develop speed and stalls. The petrol mower fs 130 stalls when you give it gas. But in most cases the situation is even simpler than it seems at first glance.
To cope with such a problem, first try to figure out its causes on your own, because once you find out the reason, it’s even easier to deal with the problem, and from time to time it even self-destructs.
In fact, there are quite a lot of circumstances when a lawn mower stalls at high speeds.
Why doesn't the Chinese lawn mower develop speed?
The trimmer is not
is gaining
momentum
, a very common problem and of course
does not
always have a common solution. In this case.
Little tricks
about what to do if the gasoline trimmer does not gain momentum.
The trimmer does not gain momentum, what should I do?
Candle
If there are problems with the spark plug, sometimes it is enough to dry it or clean it with sandpaper and return it to its place, setting the gap correctly - it should be 1 mm. If the spark plug is heavily covered with soot, it is better to replace it with a new one. When the trimmer operates optimally, the spark plugs do not fail so often.
External factors
The reduction in the speed of a lawn mower is influenced by several factors not related to its breakdown:
- filter contamination due to dirt and dust particles entering it;
- use of low-quality fuel;
- incorrectly prepared mixture (relevant for trimmers with two-stroke gasoline engines);
- contamination of the muffler mesh with particles of vegetation, soil elements and other objects.
In this case, in the second and third cases, carbon deposits form in the combustion chamber and the carburetor elements become clogged.
