Hitachi lawn mower stalls when working. Diagnostic and repair procedure

Hitachi trimmer does not develop a moment

I want to share my experience to restore the necessary power of a trimmer for grass with a gasoline engine.

Once in early June, I began to notice that my trimmer for the grass of the GT22GES model (manufacturer “ECHO”) began to lose its former power.

In the process of working with the grass, even with a slight increase in the load (grass higher and thoroughly), the turnover fell and the efficiency of the work was not the same as it was previously.

Previously, a trimmer for the grass did not notice such obstacles at all. With a sharp press on the “gashter” without load, the turnover increased slowly, as if reluctantly.

I took the user guide for a trimmer for the grass, found in it the section “malfunctions and their elimination”. I chose a suitable malfunction in the table, which is described something like this: “The engine is poorly accelerated or fades”.

Among the possible causes are pollution of the air filter, fuel filter, clogging of the drainage opening of the fuel tank, the spark plug, carburetor, clogging of the cooling system, clogging of the exhaust channel or silencer.

As it turned out, the list of possible reasons is extensive. where to start?

First, the air filter, a drainage hole, an air radiator looked visually, all this was in normal condition.

Then I decided to look from the end of the list, that is, check the exhaust system. the exhaust channel and muffler.

To do this, he took off the candle tip, unscrewed 3 screws and removed the plastic protective lid of the muffler (in the drawing in the manual under 5)

Then unscrewing two long screws, he carefully removed the muffler, so as not to damage the two gaskets that are present there

The foreboding did not deceive me. The output channel of the engine cylinder (through which exhaust gases emerge from the cylinder) was 30. 40 percent by a pledged.

So this is the reason for the disorder of the work of my trimmer for the grass!

Caution, so as not to damage the piston surface and prevent foreign products from entering the cylinder (in other words, the same carrier), I completely cleaned the exhaust channel from the carrier, carefully blew the channel using the pump. I used a knife as a tool (but only with the edge of the channel), and in the depths of the channel a wooden and plastic spatula of a suitable size

I used a knife as a tool (but only with the edge of the channel), and in the depths of the channel a wooden and plastic spatula of a suitable size.

The muffler was quite pure and inside and outside.

After the assembly, he started a trimmer for the grass, warmed up a little and tried to mow-the engine earned like new, the power increased noticeably, the grass does not mow, but cuts (fishing line for 3 mm trimmer).

It’s nice that the device began to work excellent and is doubly pleased that he himself was able to find a malfunction and eliminate it.

It is likely that such a problem can arise in other models of trimmers, because their design is approximately similar and all trimmers for grass have a graduation channel and muffler.

The lineup

The Hitachi trimmers line are constantly replenished with new modifications that are popular in many countries of the world. Trimmer for grass gasoline Hitachi is highly performance and long.term operation.

CG22EAS-NB

Hitachi CG22EAS-NB is designed to mow grass in a small area. You can install different types of cutting tools (fishing line for a trimmer, knife), this makes it possible to download both young grass and dry shrub. The device is equipped with a New Purefire exhaust cleaning system, which increases the environmental friendliness of the model. Low fuel consumption makes it possible to work for a long time without adding fuel.

• Engine power. 0.86 liters.With.
• Engine volume. 21 cm³.
• The volume of the fuel tank is 0.44 liters.
• The drive shaft is hard.
• Carburetor. Walbro.

The handle has a convenient shape. The engine is located on top, which allows you to work even after rain, when the grass has increased humidity. The device is equipped with a S-START launch system, so that the start of work occurs smoothly, without jerking. The device has a small weight of 4.4 kg, which allows you to control the device even to the child. Reliable casing protects the driver from injuries. The model is equipped with a removable gearbox.

CG27EJ-S

Hitachi CG27EJ-S mower is characterized by compact dimensions, small weight. The device has a comfortable bicycle handle designed for cutting grass. This model is equipped with a 1.1 liter gasoline engine with a capacity of.With. The movement of the braid is not limited to the length of the wire, so the device can work on a large section. The lawn mower can overcome areas with an uneven surface.

• Engine power. 0.88 kW.
• Engine volume. 27 cm³.
• The engine is two.stroke gasoline.
• Cutting element: knife, fishing line for trimmer.
• Field diameter. 2.4 mm.
• Tank capacity. 0.67 l.
• Cycling peak type U-shaped.
• Hard drive shaft.
• The width of the grass mowing is 46 cm.
• Landing diameter. 25.4 mm.
• Dimensions of pigtails. 726x650x600 mm.

CG27EAS-NB

The Hitachi CG27EAS-NB gasoline trimmer is used in areas with a small area. The device is equipped with a disk and a trimmer head. The NEW Purefire Innovative system reduces toxic exhausts to 50% and saves fuel. The kit has a convenient belt.

• Field diameter. 2.4 mm.
• Engine power. 1.1 kW, engine volume. 27 cm³.
• The engine is two.stroke gasoline.
• Fuel tank capacity. 0.53 liters.
• The weight of the unit is 5.1 kg.

The kit has protective glasses, a knife and a cutting element with a cord. Spare parts for these mowers are available in all workshops, due to which units are popular with customers.

The lawn mower stalls at high engine speeds

During operation, a situation arises when, when pressing the fuel supply key, the aggregate turnover begin not to increase, but to decrease. A malfunction of this nature can be caused:

• etching of atmospheric air into the combustion chamber;
• problems with the circulation of a mixture of fuel;
• clogging the saapun in the lid of the fuel tank (cleaning the hole with a thin sewing needle);
• Incorrect carburetor adjustment.

When air sunses, when I operate ICE, it is necessary to check the tightness of the pipes and the integrity of the gaskets in the CPG. The problem with the circulation of the fuel mixture can be solved by the elimination of blockages in the fuel pipes leading to the carburetor. If a vacuum occurs in the tank and not receipt of the fuel mixture to the carburetor, it is enough to clean the soundtress with a thin needle and blow it with air.

The gasoline trimmer for grass stalls at idle

Often, when reducing the speed, the motor motorcycles stalls and does not support idle speed when re.starting. The main reasons for the occurrence of such a breakdown include pollution or the dumping of the carburetor, as well as clogging of the air filter.

Gasoline trimmer for grass stalls at idle

In case of violation of the optimal settings of the carburetor, it is necessary to clean it and repeated adjustment. You can cope with clogging the air filter of a trimmer for grass by placing it for several hours in a solution with a conventional domestic detergent. If independent cleaning has not helped to cope with the blockage, it is better to purchase a new filter element in accordance with the operating manual.

After the measures, the user will not encounter a situation for a long time when a trimmer for grass stalls in idle and functions only when gas supplies.

Trimmer malfunctions for grass

Trimmer for grass is a convenient and affordable replacement for the lawnical mower. Its cutting part is made in the form of fishing line, knives or disk installed on the drum, which is closed on top of the protective casing. The basis of the design is a bar, which is adjustable in height, at the end there is a comfortable handle and shoulder belt.

Like any other technique, a trimmer for grass may be unknown, and so that the breakdown does not lead to the final failure of the tool, we suggest you familiarize yourself with this article. Unit can break down for various reasons. Breakage occurs both in new trimmers and those that have long been operated.

A malfunction of electrical models

The reasons for the unexpected shutdown of an electric lawn mower are associated with a cliff of the cord or the absence of current. In the first case, it is recommended to check the cable for a cliff. To replace the power cord, you need to pull out the fork out of the outlet, open and dismantle the circuit lid.

Before unscrewing the squeezing of the cable? It is necessary to remember the diagram of its connection to the switch. To disconnect the cord, a hexagon is used (diameter 1 mm). The clip is released, the conductors are dismantled. To check the cable for a cliff, multimeter is used. If necessary, a new cord is installed. In this case, the reverse sequence is observed.

In the second case, it is recommended to connect another device to the mains. Electric devices may not work when the fuse is damaged in the fork. To carry out repair work, you will need to disassemble the fork. For this, a screwdriver and a tester are used.

Motor malfunctions occur when overheating of the lawn mower:

In the first case, it is recommended to wait a few minutes so that the motor cools. In the second case, you need to remove the stuck object. The effectiveness of the cooling system depends on the state of the air filter.

Dirty device poorly passes air, which helps to turn off the device. Experts advise cleaning and changing the filter once every 3 months (with constant operation of the lawn mower).

With a breakdown of the electric motor, the corresponding smell and noise appear. In this case, you need to replace the drive.

The vibration of the motor on idle, on a cold or warm engine: possible causes

Immediately note that there are many reasons for the emergence of vibration of the internal combustion engine, starting from the torn engine pillows (supports) and ending with ignition passes and the tag of power unit. For a more accurate definition, first of all, you should pay attention to one or other symptoms.

The fact is that vibration can be either constant (regardless of heating and loads on the unit), and manifest itself in a certain mode of operation (idle or high speeds, on cold or hot). Another engine vibration can manifest itself on a cold ICE, but as it warms up, it completely disappears. Let’s understand.

• For example, if the engine was recently versed for repair (possibly capital), then there is a high probability that the crankshaft was not properly covered after the reverse assembly. The result is a beating and increased vibrations.
• We also note that after repairing the motor to imbalance and vibrations, different weights can lead to the details of the cylinder-piston group. The more weight difference turns out, the stronger the vibrations will be. For this reason, experienced craftsmen weigh pistons, fingers, etc.D.
• Often the reason for vibrations is that the engine is troit, that is, one or more cylinders for any reason do not work or work with failures. As a rule, the elimination of the cause of the touch automatically eliminates the presence of vibrations of the power plant.
• Do not forget that the timing belt incorrectly set on the marks or the chain also causes vibrations.The reason is that the engine works unstable due to violation of the phases of gas distribution.
• Many engines have in their design special balancing shafts that are necessary in order to “extinguish” fluctuations. Quite obvious, problems with these shafts will lead to an increase in the vibrations of the motor.

The engine pillows are one of the most common reasons why the engine vibrates. In fact, this is a damper made on many cars from rubber to absorb vibrations. As you know, over time, the rubber daggers and cracks, loses its properties as a result of technical fluids and t.D. The main thing is that the engine with a damaged pillow cannot work softly.

• If you recently moved from one car to another, it should be borne in mind that different engines may differ in vibration loads. The number of cylinders, layout and a number of other features affect the level of vibrations. In simple words, the usual in-line engine for 6 cylinders can operate with less vibrations than a 4-cylinder and, especially, 3-cylinder engine. over, in this case, we are not talking about problems, since for a particular ICE a certain level of vibration can be considered the norm.
• We also add to reduce vibrations, on the crankshaft of many engines there is the so.called dignified damp. If problems arise with the element, the motor will begin to vibrate more strongly.

As you can see, at the initial stage it is important to accurately determine the cause of the strengthening of vibrations. For example, in most cases, it is enough to replace the engine support or solve the problem on which the engine is troit. However, it also happens that the power unit itself needs to be disassembled and repaired.

Repair of mechanical braids is carried out when the cutting elements are blown up or damaged. In this case, experts recommend to independently dismantle removable knives. Evadal is used to sharpen them. If necessary, the battery is replaced in battery.

Before repairing the lawn mower, the type of motor is determined:

The lawn mower stalls at high engine speeds

During operation, a situation arises when, when pressing the fuel supply key, the aggregate turnover begin not to increase, but to decrease. A malfunction of this nature can be caused:

Fuel hoses Motokos with filter

• etching of atmospheric air into the combustion chamber;
• problems with the circulation of a mixture of fuel;
• clogging the saapun in the lid of the fuel tank (cleaning the hole with a thin sewing needle);
• Incorrect carburetor adjustment.

When air sunses, when I operate ICE, it is necessary to check the tightness of the pipes and the integrity of the gaskets in the CPG. The problem with the circulation of the fuel mixture can be solved by the elimination of blockages in the fuel pipes leading to the carburetor. If a vacuum occurs in the tank and not receipt of the fuel mixture to the carburetor, it is enough to clean the soundtress with a thin needle and blow it with air.

Diagnostics and elimination of gasoline problems

Before proceeding with the repair of a particular node (parts), it is necessary to determine the nature of the malfunction. Step.by.step diagnosis and elimination of malfunctions. hereinafter.

Carburetor

This mechanism is an important node of the benzotrimmer. In order for the carburetor to work properly, several conditions must be met:

• at times to disassemble and clean it;
• regulate idle speed according to the instructions;
• Turn to the help of a master when adjusting.

In the case of a breakdown of this unit, it can be renovated by yourself, but only in the presence of certain knowledge.

One of the reasons for the poor operation of the carburetor is a relaxed cable. To eliminate the problem, first you need to disassemble the entire node, and then, thoroughly washing all the details, grease and tighten the cable, but not very much so as not to take care.

Important! Other malfunctions can negatively affect the operation of the carburetor: failure of the intake needle, deformation of the membrane, wear of the adjusting lever, pollution of the adjusting cavity, wear of the shutters.

Candle

For problems with a candle, it is sometimes enough to dry or clean it with sandpaper and return to its place, properly putting the gap. it should be 1 mm. If the candle is strongly covered with soot, it is better to replace it with a new. With the optimal operating mode of the trimmer for the grass, candles do not fail so often.

Filters

Blocking air filter ─ another reason for the unreliable operation of the device. To check the involvement of this element in the malfunction, you need to start the lawn mower without it. The contaminated filter can be washed in gasoline, dried or replaced with new.

The clogged fuel filter does not let the fuel into the cylinder, and the engine with full gas stalls due to elementary lack of gasoline. This element is located inside the tank on a fence hose. To eliminate the problem, instead of the old filter, put on the new hose or rinse carefully the one that was removed.

Advice! When trying to pull out a cork in the tank, the hose along with the filter can fall into the tank. You can get them with tweezers.

Motor

Engine ─ this is the most important part of any unit. There are several reasons for the breakdowns of the ICE:

• incorrect oil proportions with fuel (for two.stroke);
• old fuel mixture;
• wear and destruction of the piston ring;
• traces of scratches on the cylinder and piston;
• Operation of the apparatus for wear.

All this leads to the fact that the engine either does not start or stalls.

Important! If all other details and nodes of a trimmer for grass are repaired with your own hands, then you need to be extremely careful with the motor. This work is best entrusted to a specialist. The repair can be subject to the piston, seals, cylinder, rings.

Fuel system

For non.precise operation of the benzotrimer, the functioning of the fuel system is of great importance. Gasoline passes through all its nodes and details, so they should be regularly cleaned. In addition, it is necessary to use only high.quality fuel. To prepare a combustible mixture, motor oil can not be used on a two.stroke engine, as it has insufficient qualities.

Frequent malfunction: the engine is not gaining momentum and what to do to the driver

revolutions, then the 1st step. analyze when and how it manifested itself. In other words, the device finished spin suddenly, or the inconsistent with a set of revolutions evenly progressed. You should also direct attention to the presence or absence of other symptoms.

The fact is that the motor failure that previously worked did not gain speed after at least any repair or other manipulations, it may simply be the result of the assembly errors, unconnected by the sensor and that is similar. In such cases, the malfunction can be found more frequent and more precisely after an ignorant review or immediate return of the vehicle to the service, where the car was previously repaired.

Immediately after the injury

The block may stop immediately after starting, if the carburetor is incorrectly adjusted or adjusted incorrectly. This causes uneven fuel supply. As a result, the device begins to vibrate clearly. The carburetor is adjusted in accordance with the instructions of the mechanism to eliminate malfunctions.

The engine also stops when it clogs the valve, the supply of fuel. In such cases, it is quite easy to clean it. If the brush worked first at first, but then immediately died out, then the fuel can hardly get into the carburetor knot. The weakening of the valve helps to solve the problem, ensuring free circulation of the mixture in the system.

You can also call it a stop. Air absorption in the presence of mechanical damage to the hose (holes, cracks) from which fuel is produced. In this case, add the drive rotation to quickly remove air bubbles from the system.

When heated

Motocosis often stops when heated. At the same time, it starts, the “jerk” works and gradually stops. This process occurs when the gas in the carburetor boils or the shutter is installed on a rotary, and not on a disk type. In the latter case, the element changes.

It happens that a trimmer for grass heats up if the ignition wire or coil is damaged. For the proper operation of the device, replace the parts.

Hitachi lawn mower is not developing a moment

A braid braid with a gasoline drive is a necessary thing to owners of personal plots, lawns, and when a trimmer for grass stalls at one moment, the work on cleaning the area from the grass stops. The device itself is essentially a rather difficult mechanism, therefore there are many different circumstances of its breakdowns. Most often, the emerging problems contain an annotation for operation. Know the prerequisites for why the trimmer stalls for the grass, it should be that without the help of others to perfectly perform the repair of the device.

Problems with a benzocosa associated with the purpose that this device is not started, specially classified by specialists of service services. They stand out malfunctions with such nodes of the mechanism:

• The engine where the piston and bearings can be worn out or out of order, crack the crankcase;
• A fuel supply system, at the same time, clogging a filter or a task with a carburetor;
• Mechanical damage to wires, tubes, hoses;
• The ignition chain.

In order to correctly find the knot where the breakdown occurred, it is necessary to control the circumstances of the trimmer stalls for the grass.

If the lawn mower stops when pressing the gas, then the prerequisites are usually subsequent.

• The more increased option is a carburetor adjustment failure that appears with significant load loads after a long.term inaction of the mechanism or when using it in languid criteria.
• The clogging of the fuel valve, which eliminate it with a message, under the influence of which gasoline according to the system begins to flow normally.
• The weakening and hanging of the cable in the carburetor. There is also a tensile of the fuel hose directly to its gap, caused by the action of a significant load.
• The clogging of the soundtress (revolutionary valve), for this reason, does not enter the fuel in the tank.

The trimmer for the grass does not develop, what to do?

If the inconsistent is associated with the carburetor node, then recognize it of course when the vibrations of the lawn mower appear. When a hose bursts or a cable stretches, a change of data data is made.

Trimmer for Hitachi CG25EUS grass

Hitachi grass braid is most often used by the owners of small personal plots. Due to its form, a cutting tool can easily get to the most remote and inaccessible places.

The handle is equipped with patronage handles that relieve the negative impact of vibration during operation. Design features contribute to a decrease in noise level and the ability to work even without headphones.

A durable casing reliably protects the operator from flying away grass. All parts are made of high.quality materials that are not amenable to the influence of moisture, and the basic structural elements are securely hidden.

Why does the lawn mower stall after starting?

After starting, the motor may stall if the carburetor is incorrectly configured or it has been resolved. On what signs can be understood that the reason really lies in this? Very simple, by vibrations that will be clearly felt during the work of a gas station. You can adjust the fuel supply with your own hands by completing everything that is written in the instrument operation instructions.

The motor can stall due to clogged fuel valve. The reason is eliminated by cleaning it. If the lawn mower started up, and then stalled sharply, then it is difficult to supply fuel to the carburetor. Weaken the valves of the carburetor to ensure the free approach of the fuel to it in the right amount.

With excessive air leaks, the engine may also stall. Add the engine speed so that air bubbles come out faster from the fuel system of the unit. Be sure to check the integrity of the fuel hose. In case of mechanical damage (cracks, punctures, etc.P.), replace the part.

How to replace the spark plug correctly?

As you can see, there is nothing superplousing in this procedure.

A new spark plug for a two.stroke internal combustion engine of a gasoline braid for grass is installed in return for the old detail that failed

Characteristics of the CG27EAS NB model

Hitachi lawn mower is equipped with a two.stroke engine. The trimmer for the grass of the lineup CG27EAS NB is characterized by improved characteristics:

• Engine power. 1.2 horsepower. Volume. 26.9 cm³.
• The capacity of the fuel tank is 520 grams.
• Speasing width. 430 millimeters.
• Direct indifferent bar.
• Two bicycle handles.
• The shoulder belt is put on two shoulders.
• Mass. 5 kg.
• A knife equipped with three blades and a protective casing.
• The head with a fishing line.
• A unique belt system. They are put on two shoulders.
• Tools for assembling products.
• Protective glasses.

The reasons for the weak.speed trimmer for grass

If users complain to the trimmer for grass, which does not gain momentum, this means that it works normally on idle, and when pressing gas does not develop the necessary power. This can happen as a result of a long downtime of the apparatus without activity. These problems are typical for gasoline devices, including the Husqvarna 128R, STIHL FS 38 and Hitachi different modifications.

Working with a trimmer, you need to monitor its behavior all the time. a drop in revolutions and unusual noises signal the malfunctions in the aggregate. Sometimes you give gas, and the trimmer for the grass swims. In such cases, the work should immediately be suspended, let the mechanism cool and start searching for possible problems. They can be of a different nature of both the technological plan and external factors related to the conditions and features of the operation of the device.

The main problems and malfunctions of the carburetor.

Mesh filter. With this element, only two obstacles are more often:

In order to find out the cause of the breakdown, the fuel filter lid is unscrewed to extract the mesh filter. The trimmer for the grass does not gain momentum, the lawn mower is idling at idle. If the mud just accumulated on it, then flushing in gasoline or purge will help.

With visible damage on the mesh filter, it is necessary to put a new. There may also be damage to the fuel supply pipe (during the repair they practice checking this element).

The starting device of the carburetor almost always does not work due to blockages. Should be used for flushing acetone or the same gasoline.

Purging parts of a carburetor with click of compressed air. permissible and comfortable repair practice.

The hull of throttles, places of ligaments of the parts of the carburetor, intake or graduation pipeline. all of the listed parts are subject to depressurization. You can probably check the simple method. spread the problem area with soap foam.

Reasons and repair

I wish to share my experience to restore the desired power of a trimmer power for grass with an internal combustion engine.

Once, first June, I began to notice that my trimmer for the grass of the GT22GES model (manufacturer Echo) began to lose its former power.

In the process of working with grass, even with a small increase in the load (grass higher and thoroughly), the turnover fell and the efficiency of the work was not the same as it was previously.

Previously, a trimmer for grass did not generally notice such obstacles. With a sharp press on the trigger without load, the turnover increased slowly, it seems to be reluctant to.

He took the management of the user on a trimmer for the grass, found in it a section of the malfunction and their elimination. I chose a suitable malfunction in the table, which is described approximately like this: the engine is poorly accelerated or fades.

In the midst of probable circumstances, pollution of the air filter, fuel filter, clogging of the drainage opening of the fuel tank, the spark plug, carburetor, clogging of the cooling system, clogging of the exhaust channel or muffler.

As it turns out, a list of probable circumstances is wide where to start?

At first, the air filter, a drainage hole, an air radiator looked at the visually, all this was in the usual state.

Later I decided to look from the end of the list, in other words, check the exhaust system of the exhaust channel and muffler.

To do this, he took off the candle tip, unscrewed three screws and removed the plastic protective lid of the muffler (in the drawing in the manual under 5)

Then unscrewing the two long screws, he carefully removed the muffler, so as not to destroy the two gaskets that are there

The foreboding did not bother me. The output channel of the motor cylinder (through which exhaust gases emerge from the cylinder) was packed with a gun by 30 40.

So this is the reason for the disorder of the work of my trimmer for the grass!

Caution, so as not to destroy the surface of the piston and prevent third.party goods (in other words, that Nagar) Immediately cleaned the exhaust channel from the carrier, carefully purged the channel using the pump. I used a knife as a tool (but only with the edge of the channel), and in the depths of the channel a woody and plastic spatula of a suitable size

I used a knife as a tool (but only with the edge of the channel), and in the depths of the channel a woody and plastic spatula of a suitable size.

The muffler was quite unsuccessful and snus.

After the assembly, he started a trimmer for the grass, warmed up a bit and tried to mow the engine earned like a new one, the power increased noticeably, the grass does not mow, but cuts (a fishing line for a trimmer three mm).

Read Lawn Mushroom mowing stalls at high speeds

It’s nice that the device began to work excellent and it is doubly nice that he managed to find a malfunction and remove it.

It is possible that such an inconsistent can appear in other models of trimmers, because their design is approximately similar and all trimmers for grass have a graduation channel and a muffler.