Trimmer for grass is started only on full gas. At high speeds

Why stalls a lawn mower or a lawn mower when pressing for gas, opening an air damper or at high speeds

The maximum and minimum engine speeds, even idle is regulated by the carburetor. The stable operation of the lawn mower depends on the amount of fuel mixture and air. The lawn mower is not started with disturbed adjustment of the carburetor. The procedure for setting up the device for supplying fuel at low speeds (L), high speeds (H) and idle (T) is regulated by the same vints:

  • The chainsaw should work for at least 10 minutes, since the adjustment is carried out in hot.
  • The screw n is flooded smoothly to maximum speed, then turning on ¼, counterclockwise, reducing the speed of rotation of the engine shaft.
  • The idle stroke is regulated by the screw T, ensuring that the braid for the grass does not rotate.
  • The screw l is regulated, first opening the throttle as much as possible, and then smoothly reducing the speed to stable minimum.

After adjustment, a proper carburetor with cleaned filters should ensure the operation of the engine. In the event of a malfunction of the carburetor, after its repair, it will again need to configure the supply system before starting the lawn mower.

Rare breakdowns that prevent the operation of the lawn mower can be:

Well, even if after such bullying your trimmer does not start for the grass, you can’t do without disassembling the carburetor. It may very well be that everything is to blame for the gathering of the needle in it. It stalls in idle. Когда нагреется ее триммер для травы сразу глохнет почему глохнет. Why is hot stalling ? Actually, if you take a hot one for a hot trimmer for grass? Hitachi. In any case, the disassembly and washing of this capricious mechanism certainly will not hurt.

In general, when a trimmer for the grass began to be capricious and stall, it is advisable to carry out complete prevention: to completely change the fuel mixture, try another oil, and also mandatory change the candle. Practice shows that in many cases, it is precisely cheap low.quality candles that are to blame.

We examined the most typical reasons why a trimmer is not started for grass. If the matter is something more “exotic”, do not pass the campaign in the service center. You will probably find smaller and obvious breakdowns yourself.

Not starting a chainsaw on hot

There are no unnecessary phrases in the operating instructions, everything that is proposed is aimed at the operation of the lawn mower. Cleaning all parts after each cycle of work contributes to the light removal of not hardened residues and dirt. You need to clean only cooled nodes. This technique contributes to the quality of the air cooling of the engine and the gearbox.

For refueling, it is necessary to use fuel with oil recommended in the instructions. If you leave the combustible mixture in the fuel tank, the oil will float and dies on the damper when starting, worsening its adjustment. The mixture can give a sediment and score fuel supply in the carburetor.

When preserving equipment for the winter, make an audit, grease the gearbox and the piston system, wrap the entire saw in the oiled rags and store in a dry place.

It is impossible, dangerous for the instrument and health of the mowing, use a metal cable instead of fishing line. It cuts more efficiently, but the load on the gearbox and the engine increases. A demolished piece of wire when separating flies at the speed of a bullet. Effective mowing can lead to a speedy wear of the piston group of the engine. For greater efficiency of the mowing, it is proposed to use the profile of the “Star” fishing line.

It is impossible, dangerous for the instrument and health of the mowing, use a metal cable instead of fishing line. It cuts more efficiently, but the load on the gearbox and the engine increases. A demolished piece of wire when separating flies at the speed of a bullet. Why is it hot bad if the motor is poorly started on why a trimmer does not start for grass.

What could break

Malfunctions with a benzocosa associated with the fact that this device is not started, in a certain way are classified by specialists of service services. They stand out malfunctions with the following nodes of the mechanism:

trimmer, grass, started, only
  • the engine in which the piston and bearings can be worn out or fail to crack the crankcase;
  • the fuel supply system, while it is possible to clog the filter or problems with the carburetor;
  • mechanical damage to wires, tubes, hoses;
  • The ignition chain.

Stihl won’t throttle up or stay running? First thing to check!

To correctly determine the knot where the breakdown occurred, it is necessary to pay attention to the circumstances of the trimmer stalls for the grass.

Ways to eliminate breakdowns

Subsequent work is likely on the carburetor:

  • cleaning and adjustment of the fuel supply valve;
  • similar work with a valve producing redesigned gases and pairs (after burning fuel);
  • replacement of the spring more weak on the entrance valve;
  • restoration of the tension of the carburetor cable;
  • replacement of the fuel leaks hose, verification and strengthening of a weakened connection;
  • changing the rotor damper disk;.
  • Change of faulty wire or ignition coil.

Immediately after the start

Smelting Motokos or a trimmer for the grass after starting is justified by subsequent reasons:

  • impressive of previously adjusted valves;
  • first the wrong settings of the valve mechanism;
  • clogging with deposits of the fuel supply valve;
  • the hose is worn or poorly annexed.

Due to the violated method of injection of a fuel, a lawn mower or a trimmer for grass is very vibrated in work.

Ways to eliminate breakdowns

The following works are possible by carburetor:

  • cleaning and adjustment of the fuel supply valve;
  • similar work with a valve producing spent gases and pairs (after fuel burning);
  • replacement of the spring weaker on the entrance valve;
  • restoration of the tension of the carburetor cable;
  • replacement of the fuel leaks hose, verification and strengthening of a weakened connection;
  • changing the rotor damper disk;.
  • Change of faulty wire or ignition coil.

The list of work on the work may also include the cleaning of the nozzles (in a 4-stroke engine), replacement of the valve washer, gaskets in tanks and so on.

Operating advice

It is worth paying attention to several recommendations for working with a benzoca or a trimmer, extending the service life of the device to several times.

  • As soon as you notice that the lawn mower or trimmer vibrates for the grass. immediately stop working and check the serviceability, performance of specific parts.
  • Valves adjustment and checking the work of pistons and cylinders, cleaning and changing the nozzles perform, starting from the requirements set forth in the user guide and the recommendations of the masters of service centers.
  • When air bubbles enter the system due to impaired fuel hose-give in to gas. With the combustion of gasoline with higher speeds of the gas bubbles motor will be less. But this is a temporary measure. As soon as possible, disassemble the unit and eliminate the cause of the suction of excess air.
  • Do not work as a unit in cold weather, not heating the engine. under load it can often stall. The effect here is the same as in the case when the driver in.40 started the car and immediately drove off, without waiting for the engine heating.
  • Do not leave the unit on the roadway. During the accident, the hit will immediately break, and this will make the purchase of a new unit for a forced measure. A car that has crashed into it at best will receive damage to the body and bumper.
  • Avoid working with a motorcycle or a trimmer in a downpour. Water getting along with air in the worst case can lead to engine explosion. Similar situations arose with cars.
  • Do not use unverified vehicles and lubricants. The mower warms up the engine more than it would do the car itself. when overheating, it will automatically lose its lubricants. It will turn into a burned out reagent. sticky, too viscous and viscous, like fuel oil. He will immediately stall (and drown out) the motor.
  • If the oil is old, previously merged from the tank of the machine or other (or the same) lawn mower (on a 4-stroke engine)-defend it, filter to clean from dirt and metal. But at the first opportunity, purchase fresh motor oil.
  • If the engine is two.stroke. observe the ratio of gasoline and oil. For compositions with mineral oils, this is approximately 34: 1, for semi.synthetics. 42: 1, for purely synthetic. 50: 1. Do not violate these proportions: “rewinded” gasoline will not burn out and quickly clog the engine, “under.appropriate”. will accelerate the wear of its mobile parts.
  • In terms of viscosity to winter classes, they include marking oils: SAE-0W/5W/10W/15W/20W/25W. To the summer-SAE-20/30/40/50/60. For example, SAE 10W-40 is already all-season oil (when working mowers from spring to autumn inclusive). Be sure to check with the manufacturer exactly what oil is needed.
  • Always use high.quality gasoline that has passed the manufacturer all stages of cleaning.
  • Recommended octane number of gasoline-AI-92/95/98. The use of the 76th can lead to a non-power of the engine by frequent stalling if you are poured, for example, the 76th or 80th gasoline.
  • If you are not sure of the independent solution of problems with a gas station (which does not gain move and often stalls)- call the master or contact the service center for repairing motor and garden equipment. Specialists do not get used to doing this work for you.

Observing all these precautions, you will give your mower for many years of fruitful work, and yourself. the luxury of well.groomed lawns, comfort and convenience when mowing unnecessary vegetation in your site.

Cycle: why the piston may not move inside the cylinder

The flywheel of a trimmer for grass, aka Magneto’s rotor with magnets, is fixed on the shaft with a key.

This is usually a reliable connection. Under the flywheel there is a sealing oil seal that does not pass the oil from the crankcase out. But when he wears out, the craftsmen have to remove the flywheel and change the oil seal with a new.

Otherwise, the oil flies everything, including the air filter.

trimmer, grass, started, only

At the same time, it is not so easy to remove the key: people make special pullers.

When looking for information on trimmers, I came across a video of one master, who was brought into the repair of the lawn mower, where the flywheel gap was absent. Perhaps a factory marriage. Naturally, such a motor will not start.

A similar reason should also be borne in mind.

Cycle: malfunctions of the sparkling spark

Когда поршень достиг верхней мертвой точки и сжал правильно подготовленную рабочую смесь вместе с воздухом, то ее поджигает электрическая искра, проскакивающая между контактами свечи.

Iskra is a category of electric current among gases. He must have a certain force and power. Weak spark of candles is not able to ignite the fuel mixture.

The causes of a bad spark should be sought in the electrical and kinematic scheme of its formation. magneto. This is the name of a device that transforms the mechanical energy of rotation of the shaft into a spark: current discharge.

Trimmers for grass and chainsaws are now supplied with a contactless electrical circuit of Magneto: it creates less problems in operation than a system with an interrupt. With her, the gas outlet starts more reliable,

  • flywheel or rotor magneto with constant magnets;
  • high.voltage coil with wires and electronic circuit;
  • spark plug.

During the repair, it must be borne in mind that the electrical electronics and candle design details can differ in various parts of the electronics, although manufacturers try to unify and standardize them.

The following picture will help to understand the principle of their work.

trimmer, grass, started, only

The constant magnetic field of the rotor rotates next to the high.voltage coil having control windings, power and charger. Each of them introduces its own electromotive force, which is the source of energy of electricity.

The output winding of the high.voltage transformer, running electronics, gives out the pulses of the discharge current to the spark plug, between the contacts of which the spark rides.

Trimmer power loss at full throttle

I used to see an old specialized device for checking the spark plugs in a sealed transparent case. Inside the unit, a pressure was created, a screwed candle was connected to an electrical circuit and checked on a spark.

However, each owner can check the power of a spark and the operation of a candle with a sparkling coil right on the trimmer:

  • The candle is twisted with a candle key from the cylinder block;
  • A high.voltage wire with a dielectric tip needs to be connected to the candle head. we restore the contact contact of the output winding of the transformer;
  • The metal part of the candle body is laid on the cylinder block. You can use a conductive conductor. the same candle key. Only it cannot be inserted into the cylinder: you can damage the piston head;
  • with a free hand it is necessary to pull evenly, but not pull, the starter cord. Visually observe the state of the spark on the contacts of the candle.
  • contacts of the spark plug and the state of its insulation;
  • the integrity of the high.voltage wire;
  • serviceability of a high.voltage coil;
  • the degree of wear of the permanent magnets of the flywheel;
  • air gap between the flywheel and the ignition coil.

If the spark is weak or absent, then most often the causes of the malfunction lie in contaminated contacts or violation of the factory clearance of the candle. Other factors appear less.

When purchasing a trimmer for the grass, you need to take care of the reserve candle of the same brand. She, like spare parts, is needed when the motor does not start.

I recorded the brand my factory candle: l7t. You can use counterparts in case of breakdowns or damage when repair is required.

The candle gap of the non-contact ignition of the trimmer for the grass should be maintained in the interval of 0.7-0.8 mm. When examining and diagnostics, I recommend cleaning the contact electrodes from the carbon. Voronilo will help. a type of fine.grained file.

It is necessary to take into account the causes of malfunctions of the high.voltage coil and insulation of the wire. But they happen less often than that of a candle. If you noticed cracks, cuts, damage to the insulating layer, then wrap it with electrical signs, put on a heat shrink, or preferably replace it completely.

Magneto’s most overstated air gap can also be greatly affected by the lawn mowed. When it does not start, it should be reduced on its own to 0.2 mm.

This question clearly explains the owner of the video repair Nick TV in his video “A lawn mower or chainsaw, first prevention” is poorly started “. I recommend to see.

If you look at the lower part of the ignition coil, then a rectangular metal plate is visible in the middle.

It should be located on the central line of Magneto. Displacement forward or backward: it will be early or later ignition. The best performance is in the center. Seek minimal deviations. The settings are simple.

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

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

Necessary tools:

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

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

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

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

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

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

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

When heated

The lawn mower often stops when heated. In this case, it starts, works “with jerks” and gradually stops. This process occurs when gasoline in a carburetor boils or a damper in it is installed by a rotary rather than a disc. In the latter case, the part is changed.

It is found that the trimmer for the grass is heated if the ignition circuit or the coil is damaged. To start working normally, the device is replaced by details.

When opening an air damper

It happens that the unit stalls when opening an air damper, working normally at idle. This is due to the air leaks of the system caused by the presence of fuel hose cracks or problems with the oil seals. The carburetor dosing system can also work malfunctioning, while the lawn mower will stop after the opening of the damper.

All possible reasons that the lawn mower stalls, and the methods of eliminating them are contained in the next video

There are many reasons for stopping Motokos, but the most commonly occur in work related to its carburetor. They can arise in any case. The most problematic option is when there is a serious breakdown, and you will need to purchase new parts or change the lawn mower.

So that the trimmer for the grass works normally for a long time, you should strictly comply with the requirements of the operating instructions. It is necessary to refuel the unit suitable for it in the composition with a fuel mixture, the device should work with a moderate load.

When it is poorly started on a hot diesel engine

To chagrin, diesel engines also from time to time may not start on a hot. In most cases, the causes of this phenomenon are malfunctions of subsequent nodes:

  • Cooling water sensor. Here the situation is similar to the one that was described in the last section. The sensor may fail and, accordingly, transmit incorrect information to the ECU.
  • The crankshaft position sensor. Situation similar to an injector engine.
  • Air mass flow sensor. Similarly.
  • Fuel pump of the highest pressure. Namely, this can happen due to a significant wear of bushings and a pumping shaft of the pump. Air enters the pump from under the omentum, which is why it becomes impossible to collect working pressure in the prelunate chamber.
  • Diesel engine.
  • Fuel pressure regulator.
  • Ignition module.

Now we will try to summarize the information given so that it is easier for you to find the cause of the breakdown if it happens to your car.

Checking the ignition by oscilloscope

What to do if the used fuel mixture is in perfect order, but as before it does not start Trimmer for grass

petrol? The prerequisites for the refusal of the mechanism can lie in excess moisturizing the candle channel. To diagnose and eliminate the task, you need to make the next:

  • Turn the candle. Wipe it painstakingly, and then dry it.
  • Drain the excess combustible in the chamber through the corresponding candle hole.
  • Clean an old candle if there is a dozen on its surface. The use of an ordinary ladies’ nail file or a file will allow you to cope with the task.
  • When installing the element in place, set a gap of 1 mm. To check the parameter, it is enough to place any coin in the lumen.
  • Collect a multifunctional block back.
  • Try to start a trimmer for grass.

The lawn mower is not started on hot

If the lawn mower was not so long ago in work and has not yet managed to cool but did not want to start. press the gas trigger, sharply pull the starter’s cord a couple of times until the engine is started and the gas trigger is released later. If quite a lot of time has passed and the lawn mower managed to cool, then you need start

As with cool. If the above methods did not help, the lawn mower did not start, then you should contact the service center.

How to prevent sudden breakdowns during the operation of a trimmer for grass?

In order for the unit to be always in working condition, it is worth observing several ordinary rules:

  • In time, conduct a constant technical inspection of the main mechanical components of the device.
  • Refuel a trimmer for grass with only the latest fuel, the quality and origin of which does not cause fluctuations.
  • After each use of the tool, inspect whether oxides and soot on the surface of the ignition system have formed.
  • Fear huge loads on the trimmer for grass during operation.

So that the unit remains in working condition, you need to correctly prepare it for storage in winter. First, you should make the tool absolutely disassemble, and then wash and clean the constituent elements. It is also fundamentally examined by multifunctional blocks for damage, as needed to exclude deformation of parts, various distortions, gusts of materials.

How to avoid most problems?

The work of this seasonal equipment is very affected by its proper storage. over, this applies not only to a long “rest” in the winter, but also of short intervals of inaction. To protect yourself and the technique from problems, you need to adhere to a few simple recommendations.

  • Before sending on a well.deserved rest, a tank trimmer for grass is freed from fuel remnants. To remove the entire mixture, the lawn mower is launched and allowed to work until the engine is stalled.
  • The first operation after “winter hibernation”. pouring a small amount of oil into the candle hole. Before that, the piston is moved to the extreme position. Such a lubricant will facilitate the launch and prevent premature wear of the details.

Before starting working with a motorcycle, they must check the candle and all the main equipment components.

Reasons why the trimmer for grass does not start is quite a lot. But most of them can be detected and fixed independently. The main thing is the correct diagnosis, attentiveness and sequence of actions. And about how you can cope with problems, the master from the next will tell in detail

Immediately after you started

The unit may stall immediately after starting, if the carburetor is shifted or incorrectly adjusted. This causes an uneven supply of fuel. As a result, the device vibrates clearly. To eliminate defects, the carburetor is reconfigured, following the annotations to the mechanism.

Apart from that, the engine stops when clogging the fuel supply valve. In such cases, it is quite easy to clean it. If the bureau at first earned, but later stalled immediately, then maybe the fuel with some difficulty falls into the carburetor knot. Weakening of the valve helps to solve the issue, which ensures free circulation of the consistency in the system.

The stop can also be caused by air leaks in the presence of mechanical damage to the hose (holes, cracks), taking fuel. In this case, increase the speed of the drive in order to resign more air from the system from the system.

Where to look for a reason or where to start checking

All chainsaws have the same design, and work according to one principle. The device of the chainsaw can be found in this material. It does not play much meaning which brand of the tool. Stihl, Husqvarna, Echo, Champion, Partner, Sturm and others. A malfunction manifested in the form when a chainsaw is stalling when pressed on gas can arise the same both on expensive and high.quality tools and on budget Chinese devices. If the problem has arisen, then it needs to be solved.

A chainsaw is a system of mechanisms consisting of details. Any detail in the mechanism can fail, which will lead to a partial or complete failure of the tool. If the tool engine starts, then this does not mean that the chainsaw is completely serviceable. Когда при повышении оборотов происходит прекращение работы двигателя, значит на то имеются соответствующие причины. With this malfunction, you need to pay attention initially to a number of the following tool mechanisms:

  • Gas tank. make sure of the presence of fuel. If fuel is in sufficient quantity, you should also check the serviceability of the fuel filter, the presence of a connection of the supply hose with the carburetor, and also make sure that the operability

These are the main details and mechanisms that should be checked first if there is a malfunction when the chainsaw stalls when the accelerator is pressed. There are other reasons why the chainsaw engine stall when the gas trigger presses. What else can contribute to this malfunction, as well as features of elimination of breakdowns, we will find out later.