Hitachi trimmer does not develop momentum cause

Hitachi Trimmer 7 Year Review CG22EAS(SLP)

The gasoline trimmer is not gaining momentum: the reasons and features of the repair

hitachi, trimmer, does, develop

To cut grass on a small lawn, it is not necessary to purchase an expensive and bulky lawn mower; it can be easily replaced by a gasoline / electric trimmer. The device of these machines is quite simple, they are easy to use and unpretentious in maintenance. But sometimes problems do occur. One of them. when the trimmer does not develop the maximum number of revolutions. will be discussed in this article.

Causes

Trimmers are reliable and durable (provided they are properly maintained, of course). Most often, malfunctions occur due to contamination of structural elements.

If the motor 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:

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  • low-quality fuel (fuel mixture), the case may be in long-term storage or in non-compliance with the recipe for preparing the mixture;
  • grass is wrapped around the shaft of the fishing line / knife;
  • clogged air filter / muffler;
  • unbalanced carburetor.

Troubleshooting methods

The first three reasons are fairly easy to eliminate. If the matter is in the mixture, you need to pour out the old fuel from the tank, prepare a new emulsion from high-quality gasoline and engine oil (if your engine requires a mixture) and pour it into the fuel tank. If the trimmer is running on clean gasoline, it’s 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 rinsing it. If this procedure does not work, replace it with a new one.

The last reason a lawn mower doesn’t work properly will require a little more knowledge and skill from you.

To properly adjust the carburetor for lawn mowers, a specific procedure must be followed. First, clean the air filter thoroughly. The easiest way is to rinse it (it is advisable to spray the filter with water regularly after 9-10 hours of operation).

After that, in the diagram of your trimmer, which is in the instruction manual of the device, find the adjustment screws. There are usually 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 speed.

Next, turn on the unit and wait for the engine to warm up.

Tighten the first (fuel mixture) adjusting screw slowly. Catch the moment when the motor starts to stall and turn the propeller back 45 degrees. If you do not have time and the motor stalled, the screw should be turned 90 degrees. Open the throttle and watch the revs increase. Next, slowly unscrew the screw (each turn is the same 45 degrees) until the moment when, at full throttle, the engine begins to firmly give out maximum revolutions.

The second screw, as mentioned above, controls the engine idle speed. By loosening it, you decrease the number of revolutions, while twisting it, you increase it. The screw needs to be adjusted so that the motor runs reliably at low revs. For better starting, speed up the engine slightly. At the same time, make sure that the motor makes several tens of revolutions before the start of the movement of the knives / line reel. If the engine starts poorly, tighten the screw a little.

After you have adjusted the first two screws, test the operation of the unit at maximum engine speed. If necessary, you can limit it (maximum). this will protect the motor from “boiling”. To do this, you need to tackle the third screw. Unscrew the locking nut until the adjusting screw can be safely turned. To increase the maximum number of revolutions, the screw must be loosened, to decrease. on the contrary, tighten. Fix the position of the screw with a nut. Test the motor again.

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Remember that carburetor adjustment is not a final procedure. During the operation of lawn mowers, you will most likely have to tinker with it more than once, because an unbalanced carburetor means both increased fuel consumption and a quick failure of the candles, not to mention a decrease in the power and performance of the device.

Little tricks

  • If you are unable to tighten / loosen the adjusting screws properly, it may be that the spring is too thick and stiff. Then you can choose instead of her a more suitable.
  • If your unit does not need pure gasoline, but its mixture with engine oil, strictly observe the proportions specified in the operating instructions. There is one trifle: the recommended ratio is 1: 25 (for all brands of oil) or 1: 50 (for “native” oils). Try the first ratio first. If, with this recipe, oil drips appear on the motor, and a strong carbon deposit forms on the candle, reduce the proportion of oil by half. This usually helps to fade traces and reduce the amount of carbon deposits.
  • To clean the spark plug electrodes from combustion products, you can use fine-grained “sandpaper”. Wipe them down with a dry cloth first and then gently sand them with sandpaper. If the space between the body of the device and the insulator is also clogged, a regular, unbent paper clip can help clean it. To do this, briefly soak the candle in diesel fuel, and then scrape off the dirt. If the blockage is small, one procedure is sufficient. In case of heavy dirt, it is sometimes necessary to repeat it several times. After complete cleaning, the candle must be wiped dry from the remaining diesel fuel, and then it can be used as directed.
  • Please note that foreign-made lawn mowers (gasoline, electric or battery) require a little more maintenance than domestic ones. In particular, many strongly recommend entrusting the adjustment of the carburetor of a two-stroke engine to professionals, especially if your purchase has not expired the warranty period.
  • And finally, one more tip: follow all the manufacturer’s recommendations for the operation and maintenance of the device. This will prolong its smooth operation.

You will learn more about what to do if the petrol trimmer is not picking up speed.

Filter check

The first thing to check is the fuel filter.

In some cases, a filter clogged with dirt is unable to pass a sufficient amount of the fuel mixture through itself. Accordingly, a lack of fuel appears in the system, which leads to the fact that when you press the gas of the chainsaw, the fuel burns out, and the new one does not have time to enter yet, as a result of which the Stihl chainsaw stalls. Also, with a clogged fuel filter, there may be a noticeable drop in the power of the chainsaw at the highest speeds, but this is with insignificant pollution.

Idle ones do not work

Vibrations that occur during the operation of the lawn mowers can lead to misalignment.

Incorrect adjustment of lawn mowers can be corrected simply by adjusting it in accordance with the requirements specified in the instruction manual.

In addition, sometimes gasoline trimmers can stall due to the fact that the valve located in the gas tank cap is simply clogged or stuck.

To find out, try using a scythe by loosening the gas cap.

If the device works properly in this mode, clean the valve.

over, the lawn mower can stall due to poor fuel flow to the carburetor.

Why, then, does the device start, you ask?

The reason for this is that at first the fuel gradually runs into the carburetor and it is enough to work at increased power.

However, then it is produced and at high speeds the engine starts to stall.

As for the carburetor, the problem here may also be that its body is too tight.

Air leaks can also be the reason why the lawn mower stalls at high RPM on gas.

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This refers to the possible presence of a place through which air can pass during the heating of the engine.

Be sure to check the fuel inlet hose, among other things. Engine idling unstable engine is not required on. The trimmer does not pick up speed, the lawn mower idles and stalls on. The problem may be that it does not hold well or is cracked altogether.

These are the main reasons why a lawn mower can stall.

Why Trimmer Stalls When Idling

Prerequisites why the machine does not idle

Idling adjustment on the injector

Idle ones do not work

  • failure of the idle sensor;
  • clogged throttle;
  • malfunction of the throttle position sensor;
  • dirty injector or carburetor

The grounds for a breakdown can be completely different, therefore, when eliminating them, you will have to operate with all sorts of actions and techniques. If you have a considerable driving experience behind you, and you know the features of the car like the back of your hand, regardless of the model, then troubleshooting this kind of problem will not give you any problems. And all because such breakdowns are not difficult or serious. Why the trimmer stalls on the adjusted carburetor for idling. It follows from this that you can get the car working without outside help. Well, if the level of awareness or lack of free time does not give you the opportunity to eliminate all defects on your own, it is better to seek help from knowledgeable people who can save you from unpleasant moments as soon as possible.

Video. fixing the problem on a car with a carburetor:

Why does a chainsaw stall when you press the gas

Let’s say the chainsaw works normally at idle, but when the gas is pressed sharply, it stalls. What could be the reason? It is immediately clear that it is not about the ignition (no spark), because if the ignition is faulty and there is no spark, the tool would simply not start. Means the fuel system remains.

There are quite a few defects in the fuel system, and in order to determine a clear premise according to which the Stihl 180 chainsaw stalls when you press the gas, you need to carry out its full diagnostics. We advise you to read about the common malfunctions of the Stihl 180 chainsaw and their elimination.

Why stalls at full speed

Very often you can hear the question why the chainsaw stalls at full speed. There may be several reasons. First, you need to consider how the saw stalled. Suppose the tool worked fine and suddenly, for no apparent reason, it suddenly stalled and the starter did not turn. In such a situation, you can be 100% sure that the chainsaw is jammed and you need to start its overhaul.

The second situation is when the Stihl 180 chainsaw worked normally, then gradually lost power in a short time and stalled, while the cylinder overheated. In this case, most likely the reason is air leaks under the rubber pipe connecting the carburetor to the cylinder or its rupture. only works on after cleaning, my trimmer was at idle. The mixture was depleted, resulting in overheating. You can eliminate the cause by changing the branch pipe.

What to do if the washing machine does not pick up the required speed in the spinning mode

Unfortunately, even reliable products from well-known manufacturers sometimes give serious malfunctions. Among them, there is often a case when the washing machine does not pick up speed during spinning. Before turning to specialists for help, you need to find out the cause of the problem and try to fix it on your own.

Problems without repair

If the electric motor does not reach the desired mode, then it will not be possible to squeeze out the laundry. But do not panic. try to find out the reason for the unstable operation of the “washing machine”.

First check to see if the RPM control button is pressed. Most cars have this feature. If you have selected a delicate program, then the spin mode will be the same.

In some cases, it is not possible to gain the required number of revolutions for the engine from the washing machine for the following reasons:

  • The washing machine is overloaded.
  • There is too little laundry in the drum. In some products, a sensor for the minimum weight of the laundry is installed, which does not start spinning when the amount of clothes in the tub is low. Add a large terrycloth towel and the process goes smoothly.
  • Sometimes an imbalance occurs. For example, when a lot of small things are packed into a duvet cover. In this case, distribute all the laundry evenly and repeat spinning again.
  • Undervoltage in the network. For the “spin” mode, the engine of the machine must pick up higher revolutions than during washing, therefore more energy is required.
  • The washing program is set incorrectly. Check if no spin mode or delicate mode can be selected.
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Many home craftsmen are interested in the question: how to regulate the engine speed from the washing machine, if this function is absent in the control, and how much the rotation speed can be reduced.

Attention! It is strictly forbidden to reduce, even slightly, the existing parameters of engine speed from the washing machine.

Specialists from the service center who have special equipment for repairing washing machines will be able to lower such parameters. If the speed is reduced on your own, then this can lead to serious problems during further operation.

Repair required

The most common reasons for the poor speed of the washing machine during spinning can be the following:.

If the device picks up speed poorly during spinning, and the engine starts to spark, then the problem may be due to wear of the motor brushes. When they are too abraded, contact with the collector becomes poor and sparks as a result. Because of this, the motor does not master the rotation of the drum in the spin mode. As a result, the machine cannot pick up normal speed. It is quite easy to fix the situation. just replace the brushes.

If the machine rattles during the spin cycle, and the drum rubs against the housing, then this may be due to a bearing malfunction. If the seals lose their tightness, then water can get into it. The more the bearing is destroyed, the more the equipment begins to thunder. In addition, it starts to gain momentum worse and worse in rotation mode until it completely breaks down. To fix the problem, it is necessary to replace the oil seals and the bearing.

In spin mode, the machine does not have enough power to spin the drum. At the same time, the smell of burnt rubber begins to be felt. This may be due to the fact that the drive belt stretched during operation and began to slip at high speeds. Because of this, the machine cannot spin the drum in spin mode. To fix the problem, you need to replace the belt.

The machine reached the spin mode during washing, but could not gain momentum for it. There may be several reasons for the malfunction. First, you should pay attention to the tachogenerator. If it is faulty, then the machine loses control over the speed of rotation of the drum. If this is the case, then you will have to replace the tachogenerator.

The second cause of a malfunction can be a level sensor. a pressure switch. He is responsible for monitoring the water level in the machine’s tank and determines when the drain or spin mode can be turned on. If the pressure switch is faulty, then the system thinks that the water is still in the tank, so the spin mode cannot start. In the worst case, the sensor will have to be replaced to correct the malfunction. In addition, you can try to purge the sensor tubes, replace the pressure switch hose or clean the pressure take-off chamber.

HITACHI TRIMMER

Thus, if the machine began to make noise during operation, first of all it is necessary to determine the cause of the malfunction, and only after that start repairing the equipment.