the grass trimmer idles and runs intermittently. lawn mower does not develop full power. Repeat idle test
A grass trimmer that has a gasoline drive is a useful thing for owners of homesteads, lawns, and when the grass trimmer suddenly stops, the work of clearing the area of grass stops. The device itself is quite a complex mechanism, so there are many different causes of its failure. The most common malfunctions are contained in the instruction manual. Knowing the reasons why the grass trimmer stalls should be a good way to effectively repair the device yourself.
Malfunctions with the chain saw associated with the fact that this device does not start are classified in a certain way by service specialists. They highlight malfunctions with the following parts of the mechanism:
- The engine, in which pistons and bearings can wear out or fail, or the crankcase can crack;
- the fuel supply system, with the possibility of a clogged filter or carburetor problems;
- Mechanical damage to the wires, tubes, hoses;
- the ignition circuit.
To correctly identify the component where the failure occurred, you need to pay attention to the circumstances under which the grass trimmer stalls.
lawnmower stalls at high engine speeds
During operation, there is a situation where, when the fuel mixture supply key is pressed, the unit speed begins to decrease instead of increasing. Failure of this nature can be caused by:
- by etching atmospheric air into the combustion chamber;
- Problems with the circulation of the fuel mixture;
- the breather plug in the fuel tank cap is clogged (clean the hole with a thin sewing needle);
- improper carburetor adjustment.
At air drainage during the operation of the engine, it is necessary to check the tightness of connection pipes and the integrity of the gaskets in the cylinder head. The problem with the circulation of the fuel mixture can be solved by removing the clogs in the fuel pipes leading to the carburetor. If there is a vacuum in the tank and the fuel mixture does not flow to the carburetor, it is sufficient to clean the breather with a fine needle and blow air.
Gasoline grass trimmer stalls at idle
It is common to see a brushcutter engine that stops and will not idle on restart. The main causes of such a breakdown may include contamination or misadjustment of the carburetor, as well as clogging of the air filter.
Gasoline grass trimmer stalls when idling
If the carburetor settings are not optimal, you will need to clean and readjust it. Grass trimmer air filter clogging can be dealt with by placing it in a solution with an ordinary household detergent for a few hours. If you can’t clear the blockage yourself, it is best to buy a new filter element as specified in the instruction manual.
After implementing measures the user will not face the situation for a long time, when the grass trimmer stops idling and operates only when gas is fed.
The lawn trimmer stalls at high speeds on the gas
Perhaps the most common complaint about gasoline trimmers is “the lawnmower stops”.
Of course, the cause of this can be a fairly severe malfunction. Lawnmower does not develop speed. why the Chinese lawnmower does not pick up. lawnmower does not develop revolutions, why the Chinese mower does not develop revolutions. But in most cases the situation is even simpler than it seems at first sight.
To cope with such a malfunction, first try, without the help of others to deal with its causes, because, having found the cause, with a malfunction to fight even easier, and from time to time it even samolikitsya.
In fact, the circumstances are when the lawnmower stalls at high revs. 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. There is no tangible result. Why doesn’t the lawnmower revolve? Why doesn’t my lawnmower revolve? Why does the lawnmower revolutions. Can’t get it off the ground.and revs up from the floor. Dilemmas with the power system can lead to misadjustment or improper adjustment of the carburetor.
How to adjust the carburetor on a chain saw
Before adjusting, the filters should be thoroughly cleaned according to the technical service manual.
Further adjustment of the carburetor lawnmower with his own hands is performed by the adjusting screws. There are three of them in total:
Right (L). fuel mixture adjustment for low revs.
Need to find the maximum idle speed. To do this, slowly turn the screw (L) to the right and left.
To adjust the mixture turn the screw a quarter of a turn counterclockwise.
The lower one (T). is responsible for adjusting the engine at idle.
- steady operation of the cold engine;
- not excessive revolutions of the hot engine;
- for the trimmer head high RPM reserve;
- stable motor operation during position changes (sudden blade raising or lowering).
left (H). mix control at high rpm. (The screw is adjusted last).
The left screw (H) affects the overall adjustment of maximum rpm, engine power, temperature and gasoline consumption.
This article will solve the problem of chain saws when they stall at high revolutions on gas
There is a wide range of trimmers on the market from different manufacturers. they are characterized by common causes of revolutions drop. Each unit is also equipped with the operating manual. It has the right section with the right recommendations on this issue regarding the model used.
If in the process of independent troubleshooting a positive result could not be achieved, it is better to seek help from professionals. It is also necessary to involve professionals in solving the problem if you do not have minimal experience and skills in such a case, so as not to harm. The most complex component is the engine. Only experienced craftsmen are allowed to work with it. When the lawnmower is on the warranty service , The best option is to contact a service center, where they will diagnose and repair the equipment.
When buying a lawn mower, you should be prepared for the fact that, as in all other similar tools, it can also have failures that will require repair.
But you should not run straight to the service center and pay a lot of money to masters, convincing you of the presence of severe faults in the device.
Causes of engine stalling at idle
Usually, always when the engine does not hold revolutions at idle, the cause is contamination of parts or some malfunction. The main causes of engine stoppage can be:
- Contamination of the engine crankcase ventilation system.
- Malfunction of air sensor, throttle valve.
- Filters, gasoline pump dirty.
- Clogged injector, carburetor or throttle valve.
- Clogged idle speed nozzle.
- Breakage of an idle speed regulator.
Preventive measures and rules of thumb
To keep the lawnmower working properly and not to stall when starting it, it needs proper storage and use. If you keep to the following tips you can forget the troubles.
- Watch condition of cooling system when mowing grass. Also need frequent cleaning of body passages and starter ribs.
- Use kerosene, thinners or other cleaners to clean the tool.
- Do not clean tools when they are hot. they must cool down before washing.
- It is important to follow the recommended operating mode to avoid overheating of the engine.
- If you will not use the grasshopper within the next 30 days, the fuel must be drained, otherwise it will disintegrate into voluminous components, which could clog the carburetor channels.
- After the fuel is drained, the trimmer to the grass should run at idle for a while, until it turns off. This will allow one hundred percent get rid of the remaining working inside the consistency.
To store the tool in cooler temperatures:
- Drain the fuel 100%;
- Disassemble the lawnmower, wash and scrub all available components;
- Look over the condition of the parts, remove any imperfections that can be corrected;
- Pour the correct amount of oil into the gearbox;
- Clean the air filter;
- Perform a partial disassembly of the motor, wash, blow out and thoroughly lubricate all moving parts;
- To lubricate the piston to unscrew the plug, then lift the starter piston to the top dead center, pour a small amount of oil into the hole for the plug and a couple of times crankshaft.
READ How to Adjust the Carburetor on the grass trimmer Patriot 3055
Only by following these rules, you can be sure that your lawnmower will work properly and will not stall for a number of seasons.
As you can see, stopping the grass trimmer can be caused by a variety of circumstances. Most of them can be corrected without assistance of the user’s manual. In cases where there is no conviction in their own strength, the technique is recommended to take to the repair. It is worth keeping in mind that incorrect actions can cause even more damage to the trimmer. Most of the problems with the brushcutter can be corrected without any help from other users, most of them can be repaired with a skimmer and the machine is easy to operate.
Causes and solutions
In order to most accurately determine the cause of the malfunction of any brand grass trimmer (e.g., Echo) and find out the possibility of fixing it, it is necessary to establish, when performing what action the device stalls. The engine can shut down at idle or at high RPM, under load, or right after starting, etc.д.
If the trimmer stalls after you apply gas
Owners of gasoline-powered mowers quite often mention that the lawnmower cuts out when the throttle is pressed. This problem is usually caused by the carburettor malfunction. Failure in its operation can occur due to prolonged storage, use in difficult conditions, significant overloading of the motor. The symptom of such failure will be vibrating movements of the device when working.
As a side note! Users familiar with automotive carburetor repair can try to repair this important grass trimmer assembly on their own, using the operating instructions. Otherwise the right decision is to address for help to the service center representatives.
Sometimes the grass trimmer stalls when you apply gas because the fuel valve is clogged. This interferes with the flow of gasoline. To fix the problem, it is enough to loosen the valves. This will restore the normal fuel supply to the carburetor.
Another possible reason why the lawnmower stalls when the gas is on is a contaminated breather (check valve). This part prevents the appearance of vacuum in the gas tank. If it is clogged, air does not come in, which means. fuel does not go to the carburetor. To fix the problem you need to clean this element.
If it stalls at high revs
If the carburetor stalls at high engine speeds, it means that at idle and low speeds it has enough fuel, and to work at higher speeds is not enough. Then it is necessary to check the serviceability of the following grass trimmer assemblies.
- Fuel hose. its integrity may have been compromised by cracking. In this case you need to replace the part. Or maybe you just need to tighten the clamps.
- The filter screen between the carburetor and the gasoline mixture hose. it could be clogged. In this situation it is necessary to clean the part.
If it stalls while idling
If the lawnmower stops working when idling, the reasons may be several factors.
First you need to check the prepared fuel solution, if we are talking about a four-stroke trimmer running on a gasoline-oil mixture. There is a possibility that it is not made correctly. the proportions are not kept. It causes the gearbox to warm up and the drum speed to drop.
If there is not enough fuel, the machine works fine at high RPM or higher, but stops when idling. If the root of the problem is in the carburetor, the lawnmower will turn off both when starting cold and on hot.
If it stalls after starting
If the technique starts up and stalls immediately after starting, it indicates improper adjustment or razregulation of the device. As a result, the fuel enters the engine unevenly, which leads to significant vibration and shutdown of the grass trimmer. To fix the breakdown, you need to reconfigure the device according to the user manual.
Another possible problem is a clogged gasoline mixture valve. It should be cleaned.
Note! If the grass trimmer starts but immediately shuts down, it could also mean that the fuel to the carburetor is flowing with difficulty. The problem can be solved by loosening the valve. this will ensure an even and free circulation of fuel in the device.
Another possible cause is a damaged fuel intake hose. Cracks and holes can allow air to enter the system. To solve the problem you need to increase the engine speed to get rid of the air bubbles that have penetrated inside the device.
If stalled when opening the choke
If the machinery operates properly at idle speed, but shuts down when the air damper is opened, this reports air intrusion into the system through cracks in the fuel hose or damaged seals. To fix it and get your lawn mower working properly without sucking air from the atmosphere you will need to replace the broken parts.
Another possible cause of failure is the failure of the carburetor dosing system. To fix this problem it is best to call in professionals.
If it stalls on heat
Lawn mower often stalls when hot. It looks like this: the tool starts, runs “jerkily” (not smoothly) and quickly stops. This situation occurs due to the boiling of fuel in the carburetor or the wrong choke, which should not be a disc, but a rotary one. In the latter case, if an error is detected, the part should be replaced.
The cause of the heating of the grass trimmer can be a damaged ignition circuit wiring or a faulty coil. The broken unit will need to be replaced with a new one.
If it stalls on exertion
Sometimes the grass trimmer stops under load, because it cannot pick up revolutions. It means that the cable in the carburetor is loose and slack. If there is experience in repairing this assembly, the cable should be tightened.
Another reason is that the fuel intake hose is too tight. When loaded, it stretches even more, resulting in cracks and damage to the part. To fix the breakage you will need to replace this element.
If the grass trimmer stalls without picking up speed
If the grass trimmer does not pick up speed and shuts down, there may be several reasons. The most common culprit is a clogged air filter. It must be taken out and cleaned, if necessary. replaced.