Assembly of the gas mushroom handle of Husqvarna gas mushrooms. Benzotrimmer loves cleanliness. We must follow…

Husqvarna 128r. Repair of the primer. Carburetor.

Almost all tools and foreign tools are organized in the same way (Husqvarna, Makita, Shtil, Partner 350) and Chinese chainsaws, as well as domestic (friendship, Ural). Therefore, finding the reason why the device does not start and does not stop is not very difficult.

There are four elements in which problems may arise:

  • Fuel for which the carburetor is responsible;
  • Lubrication;
  • The air that enters the air filter;
  • Spark, the quality of which depends on the ignition unit.

All of them depend on each other and interact with each other. If any element works incorrectly, the saw stops working.

To begin with, all the tools are configured in different ways. Hot and cold. Two frequently used mechanisms are responsible for this process.

Do not forget to see what is written in the user guide. It says that when you turn on, you need to make sure that the emergency stop brake is recorded. But starting a saw with a brake is much more difficult, so sometimes it is better not to turn on the brake.

As you can see from the leadership, there is a fuel tank and engine inside the case, and outside. saw section (tire with a chain), handle and starter.

First we need to find out exactly how the tool does not start. For example, the saw begins, but immediately catches the eye or loses the power of work, the quality cuts.

The main problems and malfunctions of the carburetor.

Mesh filter. There are only two tasks with this element more often:

In order to find out the cause of the breakdown, the fuel filter lid is unscrewed to extract the mesh filter. 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. The setting of the gas mowing carburetor is reduced to Husqvarna and others are tuned to. You can probably check the simple method. spread the problem area with soap foam.

Clutch device, principle of operation

In order to successfully disassemble this node, you will need a clutch pulp by a chainsaw. But before we consider how to use it, we will study the features of the device of this functional part of the power unit.

Please note that when developing modern chainsaws, manufacturers most often resort to the use of a centrifugal clutch clutch. And this suggests that the tool and its work depend on the stock of the spinning moment that the equipment issues here and now. The main constructive details of this node include:

The main constructive details of this node include:

As for the principle of work, then everything is simple here.

  • As soon as the chainsaws are transferred to the operating mode, the clutch springs are delayed all freely moving elements (move in the radial direction) towards the axis.
  • At this moment, the torque will not be transferred to the guide with an asterisk.
  • As soon as the centrifugal force becomes higher than the power potential of the spring, all the freely moving attracted elements are weakened and squeezed inside the drum, which will run it (it will begin to spin).
  • Rotation will go to the guide tire and the main star.

It is on this principle that centrifugal clutch works, which has several advantages in comparison with its other varieties. Among them, the lack of engine stop during the sharp braking of the cutting element (that is, the clutch slips). Due to this feature of the mechanism, the main node of the chainsaw remains unharmed.

Pay attention to the fact that this type of clutch coupling will work automatically. Its functioning depends on the number of engine speeds. The movable elements inside the drum will be attracted to the shaft (its center) even at minimal speeds

This plays an important role in preventing serious causing tools. When this mechanism fails, then there is a need to understand how to remove the clutch on a chainsaw

The movable elements inside the drum will be attracted to the shaft (its center) even at minimal speeds. This plays an important role in preventing serious causing tools. When this mechanism fails, then there is a need to understand how to remove the clutch on a chainsaw.

How to remove clutch on a chainsaw.

With the task of unscrewing the clutch clutch on a gasoline saw, when you need to replace the leading star, get to the oil pump or with a complete disassembly of the chainsaw.

There is nothing complicated if you know how. To get started, naturally you need to remove the cover of the brake of the quapi, which fixes the tire. To do this, you first need to pull the brake handle on yourself, making sure that the brake tape does not apply to the clutch cup. Then loosen the two nuts holding the lid, loosen the mechanical tensioner of the chain. After that, finally unscrew the two nuts and remove the brake brake lid.

Remove the tire and chain, we see the centrifugal clutch of the chainsaw.

After that, it is necessary to lock the piston in the cylinder. This requires such a device.

Cord with nodes, to stall the piston with a crankshaft.

Next, twist the candle, take the flashlight and shine into the candle hole. Turning the crankshaft using the starter cord-we look that he was moving up, blocked the output window of the cylinder.

This is necessary for the piston not to cut the cord, which will serve as a stop. Pour the cord into the candle hole, something longer, the better and slightly rest the piston using the starter.

Now you can unscrew the clutch clutch. The thread on it is left, so you need to unscrew clockwise. Often there is a hint with an arrow on the three.beam nut, in which direction you need to twist. The difficulty also lies in the fact that the clutch clutch is planted on a threaded sealant, therefore it happens that unscrew it no. If there is a construction hairdryer, you can first warm up the center of the coupling. We put an instruction on one of the rays of the clutch nut, and several times, we sharply hit the mentor with a hammer. The infusion must be set as much closer to the clutch center, if you put it on the edge, you can break off the beam of the nut.

After several beats of the hammer, the clutch of the chainsaw, how-right is unscrewed, and then it can be unscrewed even with your hands. If it goes tight, you can take a regular key to corner grinder, and twist it.

After removing the clutch basket, it becomes possible to replace the leading star (it can be either whole together with the drum and separate, floating), evaluate the condition of the needle bearing, or gain access to the oil pump.

Assembly is carried out in the reverse order. Be sure, you need to apply a little threaded latch on the thread, it is better to red, for stiff connections, so that the clutch does not unscrew spontaneously.

Before winding the clutch, it is better to stretch the rope from the cylinder, turn the crankshaft again, but already in the opposite direction until the final window is overlapped, and pushing the cord in a new way. Although, as it was right when twisting, the crankshaft rests itself with the help of Magneto hooks on the starter. Twist the clutch of the chainsaw, you need to. It is desirable to launch a chainsaw after the thread lock is grasped, and always with the brake lid installed. If this is not done, then the clutch clutch can spontaneously turn off on the move, fly away and lead to injuries. This can happen if you disperse the engine to high speeds and then drown out. In such a situation, parts of the flying couplings can fly out within a radius of 15 or more meters, so observe safety precautions!

How to tighten the starter spring chainsaw

A chain starter. Learn to repair yourself

For the quick launch of any chainsaw, a starter is required. Когда коленчатый вал инструмента ускоряется, топливно-воздушная смесь, подаваемая в двигатель, сжимается, а не его дальнейшее воспламенение. How to replace the spring. Details of replacement of a chainsaw with a dog starter, how to tighten. Therefore, the normal work of the starter for the chainsaw determines the effectiveness of the entire mechanism.

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The device of the chainsaw starter

The principle of operation of the starter for the chainsaw is as follows. The handle is inserted into the groove of the case through which the cable passes. The principle of the starter for the chainsaw is how to put the spring on the starter. If the handle is sharply raised, the cable stretches and combs the rattle drum, which transfers movement to the drum with slots provided for the shaft. At the same time, the crankshaft makes several revolutions, and the working mixture in the space between the pistons does not compress the cylinder head. Accordingly, when the handle is lowered, the contact between the ratchet is not lost by hairpins, the shaft does not stop.

As the engine volume increases, the amount of unnecessary fuel mixture necessary for its subsequent ignition increases, so the number of jerks of the starting cable for saws of high power increases. Therefore, in order to speed up the return of the drum, the springs of a forced return made of steels with high elastic properties are used.

Simplification of the launch of the chainsaw is carried out in the following ways:

  • By preliminary enrichment of the working mixture, for which a special damper is installed in the design of the carburetor.
  • Installation of an automatic decompression valve, which lowers the operating pressure in the chainsaw cylinder.
  • Installation of an additional spring that, when the cable moves, facilitates the unwinding of the crankshaft.
  • The presence of some chainsaws (nettles, series Partner S, Maxcut, etc.) In the design of the primer. a pump that provides preliminary fuel pumping.

Chainsaw repair, starter

With frequent launches, the chainsaws are constantly subjected to dynamic loads from the chainsaw. As a result, the cable may burst, several rattles of the ratchet will crumble, and the shaft will return with a much lower speed. Therefore, checking and even starter repair. These are operations that are sometimes performed several times during the season.

Replacement of the cord

When stretching, there is a constant friction of the cable around the starter case

To replace the assembly, the assembly is disassembled and the rattling drum carefully rises so that the spring does not jump out of the nests. It is best to do this work together: the assistant blocks the spring, and the cable is replaced

How to pull a spring starter spring on a chainsaw, repairing a chainsaw starter. After attaching the cable, the cable is wound on the roller to the handle and grooves of the drum and the case is assembled.

Spring repair

If the spring material is bad, the spring bursts (usually at the place of fastening to the drum where the loop is formed). In this case, there is no need to replace the spring. It is enough to carefully clean the surface of dirt and traces of lubrication, thoroughly polish the destruction place, and then release the spring at a temperature of 600. 650 ° C (spring steel should become raspberry). You need to slowly cool the spring, but at 100

150 ° C can already carefully turn its end in the form of a limiting protrusion on the inner surface of the drum (steel acquires the necessary plasticity) and put it in place. Easy repair of the chainsaw, repair of the starter chainsaw, how to tighten the valve correctly

The elastic properties of the spring will not change.

How to put a spring on a starter chainsaw?

Inserting the starter spring into the desired groove is not easy even for an experienced user. First, the spring should be twisted to the previous diameter and inserted into the drum hub. The outer end of the spring is fixed with a restrictive protrusion, and the outer end should be located opposite the hole in the lock using a screwdriver. The hinge on the inner end of the spring is combined with a screwdriver and the disk is lowered. Disc rotation checks whether the ratchet mechanism has been installed. Next comes the rattle itself.

After installing the spring, adjust the spring. How to tighten the starter spring, tighten the spring. Starter handle how. To do this, a cable is inserted into the groove in a circle, and a return spring is spinning around it. After removing the cone, it is better to wind the spring at a few more revolutions to ensure the required tightness of the workpiece.

Husqvarna 125r carburetor tuning without a tachometer (bypass)

How to adjust the carburetor if you need to work while the tachometer service is far away.

Read how to breed gasoline for a trimmer for STIHL grass

Table with technical characteristics of mowers

For an uninterrupted and long service life, experts recommend using Husqvarna oil for two.stroke engines.

Related messages

128r. Problems with ignition or fuel supply. In the first case, the gas trimmer for the grass either stops after a few tens of seconds, or does not start at all. Husqvarna settings for this check the state of the spark plug. If it is wet, then most likely you will need to properly adjust the carburetor. Or the problem arises due to improper launch, then you should carefully study the instructions.

If the light of the ignition is dry, the fuel mixture does not arrive. Most often this is due to clogging the fuel filter or hose. The filter must be replaced (it is better to do it every 3 months), and the hose only needs to be cleaned.

The gas trimmer for the grass of this model can last for many years, the main thing. Comply with the rules of operation and conduct timely checks and replacement of the necessary details. over, the price of the Husqvarna 128R brush is fully consistent with its quality and performance.

The Husqvarna Model 128R gas trimmer is designed to process small and medium areas and is suitable for cutting grass near hard.to.reach places (flower beds, borders). The tool is equipped with a two.stroke engine with a capacity of 0.8 kW or 1.1 liters.FROM. Husqvarna 128R gas pump rotation speed reaches 11,000 rpm.

To quickly turn on the device, even after prolonged downtime, it has a built.in primer for pumping fuel and Smart Start system. The maximum possible width of processing is 45 cm. Husqvarna 128r. Gas trimmer for grass with straight rod and professional handles made in the form of bicycles.

  • A knife with 4 knives for strong and high grass or shrubs;
  • Trimmer head for grass (semi.automatic);
  • Fasteners for 2 hands;
  • A set of keys;
  • Pen for a bicycle;
  • Operating and maintenance manual;
  • Corrugated board;
  • Not assembled rod.

Related messages

The trimmer fishing line is used to remove only small grass.

The Husqvarna launch button automatically returns to its original position, which facilitates and accelerates the inclusion of the trimmer for the grass. A special knife for cutting grass does not wave it, but puts it in rolls. The case for protecting the disk and a trimmer for grass is identical, but it is not necessary to remove it when replacing the rigging.

Setting up a carburetor of a lawn mower with three adjusting screws

Before starting work, you need to place the lawn mower on a flat stable surface. Remove the chain in the opposite direction. There are motorcycles with two and three adjusting screws. Two screws most often equip the tools produced in China. Consider the adjustment of the carburetor Motokos with three screws.

Setting up a carburetor of a lawn mower with three adjusting screws

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Before proceeding with the adjustment of the carburetor of the lawn mower, you need to rinse the air filter. Cleaning is carried out with water with a detergent or soap, and if necessary, a new. Often in the poor work of the carburetor, scibberries are guilty. In order to prevent the filter, it is recommended to clean the filter after every 10 hours of operation of the tool. Do not forget to check the condition of the candle, if there is a dozen, you need to clean it. Candles are consumables and have their own resource. To ensure good operation of the engine of the lawn mower, candles periodically need to be changed. Next, we evaluate how well the carburetor is fixed to the cylinder-piston group. After the preparatory manipulations are completed, you need to start the motor. Let the engine work for 5-10 minutes. Then you need to identify how many adjusting screws on your tool.

There are the following adjusting screws on the gasoline trimmer:

Fuel supply adjustment

At first you need to slowly tighten the screw adjustment screw for the fuel mixture. You need to do this until the engine starts to stall or stalls. Following this, if the engine did not stop working, you need to turn the screw for a quarter of turnover, and if it stalled, then by half the turnover. Next, you should have a stalled engine. Then you need to open the throttle and see how the speed is gaining. Turn the screw for a quarter of turnover again. You need to scroll until the engine begins to confidently gain increased speeds during cuffing. This is the right time when the engine works most economically. There are times when adjusting this screw does not give anything. Often the reason is in the factory spring that is located on this screw. This does not happen to all the tools. And if the spring turned out to be defective, then replacing it will not be difficult. A suitable spring can be purchased at any construction store.

Cooper adjustment

Following the adjustment of the fuel supply, we are accepting for the adjustment of the idle. To do this, you need to adjust the corresponding screw so that the engine works slightly accelerated at small speeds. But it is necessary to trace, for the immobility of the reel with fishing line and knives. Before the start of their movement, several revolutions should remain in stock. The movement of the coil and knives can subsequently lead to the rapid wear of the clutch. Having noticed that the engine starts poorly, you need to increase the number of revolutions at idle. With an increase in revolutions, the fuel mixture is saturated with air, which leads to power loss.

The main signs of the proper idle work:

  • Revolutions for a trimmer head;
  • Uninterrupted operation of the engine even when the position changes (sharp rise or descent of the knife);
  • Calm operation of the engine at a cold move;
  • Lack of increased speed of hot engine.

Maximum speed adjustment

Further, for the full tuning of the carburetor of the lawn mower, it is necessary to adjust the maximum speed. It will not be superfluous to look into the instrument operating manual and see the maximum speed value. This amount will help to determine the tachometer most accurately. If such a device was not at hand, we set up by ear. Barely determining the maximum speed of revolutions by ear, we begin adjustment. A screw for limiting maximum revolutions will help in this matter. Control the engine operation at maximum speed. If necessary, reduce speed, weaken the fixing nut and unscrew the screw. If the turnover is too large, then you will need to screw the screw. These actions must be done in order to protect the engine from overheating. Scroll the screw until the clear even operation of the engine is established.

After the work done, if everything is done correctly, the stable work of the tool is provided.

Understand this by the following signs:

Description and characteristics of gas stations 128r

The gasoline trimmer for grass 128R from Husqvarna is designed to process small and medium areas and is suitable for cutting grass near hard.to.reach places (flower beds, borders). The tool is equipped with a two.stroke engine, the power of which is 0.8 kW or 1.1 liters.With. The speed of rotation of the gasoline pump Husqvarna 128R reaches 11,000 rpm. The engine is designed using E-Tech 2 technology, which significantly reduces the amount of exhaust gases produced by the trimmer. Its volume is 28 cm 3.

To quickly turn on the device even after a long period of inaction, a primer for pumping fuel and the Smart Start system are built into it. The maximum width of the possible processing is 45 cm. Husqvarna 128R. gasoline trimmer for grass with a straight bar and professional handles made in the form of bicycles. This allows you to significantly control the workflow and direction of the tool. The design with a rectilinear rod is considered the most reliable than curved. To facilitate the transportation of gasoline pumps, bicycle handles can be folded.

The weight of the device without fuel, installed cutting parts and protective casing is 4.8 kg. Thanks to this, the Husqvarna gasoline pump 128R can be used for a long time without interruptions. The fuel tank of a gasoline trimmer for grass is made of white plastic so that it is easier to control the amount of fuel remaining in it. Basin for gasoline is 400 ml. To launch a fuel pump, it is enough to pull the cord smoothly, since the necessary starting force was reduced by 40%.

  • a knife with 4 blades for hard and high grass or shrubs;
  • Trimmer head for grass (semi.automatic);
  • mounting belts for 2 hands;
  • a set of keys;
  • bicycle pen;
  • Operating and maintenance manual;
  • protective covering;
  • not assembled rod.

The trimmer fishing line is used to remove only small grass.

The Husqvarna launch button automatically returns to the starting position, so it is more convenient and faster to turn on the trimmer for the grass. A special knife for cutting grass does not crush it, but puts it in rolls. The case for protecting the disk and a trimmer for grass with fishing lines is the same, but there is no need to remove it during the replacement of the rigging.

How to disassemble and assemble a gas handle of Chinese motorcosa trimmer for grass

If desired, the crankshaft is stopped with, for example, ropes.

Problems with the engine are caused by disadvantages with the piston system, oil seals, rings. To remove them, you need to remove the drive motor.

Find what exactly became a prerequisite for the breakdown, hard. In the presence of a guarantee, the mechanism should be attributed to the service center for diagnosis and repair. If you turn to the specialists for help, there is no ability, then it should be noted that a change of piston rings is often required. For this purpose, you will be useful to disassemble the engine, get the piston. Do this in this order:

  • Remove the lid of the plastic case, unscrewing the screws with another squeezing clamps;
  • disconnect the bar with the crankshaft;
  • Remove the cylinder head;
  • take out the piston and rings;
  • as needed, make them a change;
  • make assembly in a revolutionary sequence.

The rings should be installed neatly, since they are quite fragile.

How the piston is placed and the seals are changing during the repair of the motor, it is clearly shown in the video clips further:

With constant use of the lawn mower, a gearbox may break. Gears, bearings wear out here (they are also certainly broken). So that this happens infrequently, this node should often be lubricated. Frequency is often indicated in the operational annotation to the model used (not more often than once per season). How the repairs annotations will serve as a video below.

To grease the gearbox, unscrew the cork and just squeeze the suitable lubricant inside, scrolling the shaft.

Without the help of others, the carburetor can only be removed and cleaned, and additionally replace the gasket between it and the engine. The density of the node at home is quite problematic to find. The main thing is to correctly assemble the equipment after repair, so that the trimmer for the grass works freely.

How to assemble a control handle on a Carver trimmer

Electronic trimmers for grass differ from gasoline devices with a more lightweight design. Conditionally electronic braid is divided into mechanical and electronic part. Accordingly, the same groups of problems are distinguished that arise with these equipment.

Most of the breakdowns can not be visually identified. For this purpose, it is useful to use different devices. The subsequent:

  • the integrity of the power cable is violated (insulation is broken from it, or it is obviously interrupted);
  • sank by different jamming of the trigger button;
  • mechanical external damage to motorcycles;
  • obstacles with the cutting part;
  • stopping braids for grass when clogging with grass;
  • Damage to the fork.

To find out which part has broken in other cases, it will be necessary to disassemble the electric costs and alternately check more possible options. Simultaneously evaluate external manifestations of deviations from the usual operation of the device. They contribute to the establishment of the premise.

Repair of an electronic trimmer for grass will demand the presence of subsequent devices and tools:

Electronic braids for grass often do not work because of circumstances that are not specifically related to it, but caused by a decrease in the supply voltage in the network or the non.working state of the used outlet.

Ahead of time before disassemble and repair an electronic braid, you should check the condition of the outlet and the voltage in the network. If its value deviates from the norms indicated in the operating annotation, then it does not even make sense to try to work with a device without a stabilizer designed for appropriate power. Another electric motor may fail. Only after determining the fact that the reason for the trimmer for the grass is specifically connected with the child, of course, begin to analyze the mechanism with the repair purpose.

Description and characteristics of gas stations 128r

The gasoline trimmer for grass 128R from Husqvarna is designed to process small and medium areas and is suitable for cutting grass near hard.to.reach places (flower beds, borders). The tool is equipped with a two.stroke engine, the power of which is 0.8 kW or 1.1 liters.With. The speed of rotation of the gasoline pump Husqvarna 128R reaches 11,000 rpm. The engine is designed using E-Tech 2 technology, which significantly reduces the amount of exhaust gases produced by the trimmer. Its volume is 28 cm 3.

To quickly turn on the device even after a long period of inaction, a primer for pumping fuel and the Smart Start system are built into it. The maximum width of the possible processing is 45 cm. Husqvarna 128R. a gasoline trimmer for grass with a straight bar and professional handles made in the form of bicycles. This allows you to significantly control the workflow and direction of the tool. The design with a rectilinear rod is considered the most reliable than curved. To facilitate the transportation of gasoline pumps, bicycle handles can be folded.

The weight of the device without fuel, installed cutting parts and protective casing is 4.8 kg. Thanks to this, the Husqvarna gasoline pump 128R can be used for a long time without interruptions. The fuel tank of a gasoline trimmer for grass is made of white plastic so that it is easier to control the amount of fuel remaining in it. Basin for gasoline is 400 ml. To launch a fuel pump, it is enough to pull the cord smoothly, since the necessary starting force was reduced by 40%.

  • a knife with 4 blades for hard and high grass or shrubs;
  • Trimmer head for grass (semi.automatic);
  • mounting belts for 2 hands;
  • a set of keys;
  • bicycle pen;
  • Operating and maintenance manual;
  • protective covering;
  • not assembled rod.

The trimmer fishing line is used to remove only small grass.

The Husqvarna launch button automatically returns to the starting position, so it is more convenient and faster to turn on the trimmer for the grass. A special knife for cutting grass does not crush it, but puts it in rolls. The case for protecting the disk and a trimmer for grass with fishing lines is the same, but there is no need to remove it during the replacement of the rigging.

Husqvarna carburetor adjustment

Before adjusting Husqvarna, make maintenance of the trimmer for the grass (rinse the lawn mower and engine, change the spark plug, lick small flaws).

Be sure to wash the foam element of the air filter. Wash the element in warm water with soap, then squeeze and dry (or change if it is old or damaged).

Note: If you adjust the Husqvarna carburetor with a commas with an air filter, then after cleaning the air filter, the fuel mixture will become much poorer (which can lead to bad operation or even a breakdown of the motor).

Install a trimmer head with a cord of a very acceptable diameter and standard length (to a cutting knife in additional protection) to make a load on the engine while adjusting the screw of large speeds of the Husqvarna carburetor.

Get the lawn mower according to the Husqvarna management and warm for 10 minutes (if with all this the trimmer head is spinning at idle speed, then the idle screw, t.e. Lower, you need to turn counterclockwise until the rotation of the trimmer head ends).

Carefully turn both needles (right and left) in the middle position between one hundred percent twisted and one hundred percent screwed (do not cure the stopper!, This can lead to breakdown of the Husqvarna motor). Husqvarna carburetor adjusting screws for adjusting the carburetor: right, left and lower

Husqvarna carburetor adjusting screws for adjusting the carburetor: right, left and lower.

1) The right screw l. regulates the enrichment of the consistency of low revolutions (regulated by the first):

Carburetor adjustment Motokosa Husqvarna 125, 128

How to adjust the carburetor Motokos Husqvarna 125, 128 (without a tachometer) Article of the Spare parts: 5450818-48. Carburetor…

Husqvarna 125R Setting a carburetor without a tachometer (temporary solution)

How to adjust the carburetor if you need to work, and the service with a tachometer is far away.

Find maximum idle speed, slowly turning the right screw to the right and left.

Then turn this screw on ¼ turn counterclockwise.

Note: from the Husqvarna plant, the right screw was completely unscrewed (at 0.5 turnover). Now he is looking at “11 hours”.

2.

The adjustment of revolutions is considered correct idle move, when:

  • The cold engine is stable at idle.
  • The hot engine has not highly high speed speeds.
  • Before the rotation of the trimmer head, a sufficient supply of revolutions remains.
  • The engine works steadily in any position (for example, with a sharp lowering knife).

Note: from the manufacturer (Husqvarna), the idle screw from the fully twisted, was twisted at 8 full revolutions and “2 hours” (now it remains). Husqvarna.2.recommended idle gas mowing engine. 2.900 rpm.

3) Left screw h. regulates the enrichment of a mixture of high revolutions (is regulated last).

It regulates maximum speed, engine power, temperature and fuel consumption.

Note: the Husqvarna engine should not operate at full speed for more than 10 seconds!

  • Open completely the throttle (give full gas) and slowly turn the left screw clockwise until the speed of the Husqvarna engine is reduced (by ear).
  • Then turn the left screw very slowly counterclockwise until the engine starts to work uneven.
  • After that, turn the screw slowly back to a slight distance clockwise until the Husqvarna engine starts to work smoothly.

This is where the HUSQVARNA adjustment is completed.

Note: recommended by the highest possible speed of the Husqvarna engine. 11.500 rpm.

The maximum output capacity of the Husqvarna 333R lawners engine is 1.6 kW (2.1 l.With.) at 8.400 rpm.

Note: on the new trimmer Husqvarna from the manufacturer (Husqvarna), the left screw was completely unscrewed (by 0.5 turnover) and blocked (bay) with solid plastic, which I drilled after the guarantee period. Now the left screw (like the right one) looks at 11 hours approximately.

We check the correct setting Husqvarna carburetor

The engine is quickly, evenly and confidently gaining momentum, and a little four at maximum speed, the T-35 trimmer head should not rotate at idle.

How to independently disassemble and repair an electric braid

Before disassemble and repair the electronic braid, you should check the condition of the outlet and the voltage in the network. If its value deviates from the norms indicated in the operating annotation, then you should not even try to work as a device without a stabilizer designed for appropriate power. Another electric motor may fail. Only after determining the fact that the cause of the trimmer refusal is specifically associated with it, we can begin to analyze the mechanism with the repair goal.

Repair of a gasoline engine, carburetor and gearbox

Problems with the engine can be caused by disadvantages with the piston system, oil seals, rings. To remove them, you need to remove the drive motor.

Find what exactly became a prerequisite for the breakdown, hard. In the presence of a guarantee, the mechanism should be attributed to the service center for diagnosis and repair. If you turn to the specialists for help, there is no ability, then it should be noted that the substitution of piston rings is often required. To do this, it will be useful to disassemble the engine, get the piston. Do this in the subsequent sequence:

  • Remove the lid of the plastic case, unscrewing the screws or pressing the clamps;
  • disconnect the bar with the crankshaft;
  • Remove the cylinder head;
  • take out the piston and rings;
  • As needed, they make their substitution;
  • make assembly in a revolutionary sequence.

How the piston is placed and the seals are replaced during the repair of the motor, it is clearly shown in the rollers further:

With constant use of the lawn mower, a gearbox may break. Histers, bearings wear out in it (they can also break). So that this happens infrequently, this node should often be lubricated. Frequency is actually always indicated in the operational annotation to the model used (not more often than once per season). The video below can serve as an annotation for repair.

Read adjusting the ignition coil on the trimmer video

To grease the gearbox, unscrew the cork and just squeeze the suitable lubricant inside, scrolling the shaft.

Without the help of others, the carburetor can only be removed and cleaned, also change the gasket between it and the engine. The density of the node in home criteria is quite problematic to find. The main thing is to correctly assemble the equipment after repair, so that the trimmer for the grass works without troubles.

Dismantling and repair of the electric part

Dismantling of electrocos for the repair of its electronic part is carried out in such a sequence.

  • Put a trimmer for grass on a flat surface (for example, a table) that does not contain excessive objects.
  • Spin the screws of the lids located on one side.
  • Remove the unscrewed half of the case, getting access to the start button, the electric motor, the brush unit, bearings, electronic connections (these elements are shown in the photo below).

Brush and bearing nodes are presented in the photo below.

The braid for the grass will work without a thermallara, it will only come in handy for the time without the help of others to inspect the temperature of the electric motor, sometimes letting it cool. You can also install a new similar sensor.

The starter start button can be checked by the jumper with a jumper of its contacts. If the trimmer for the grass earns, then the inconsistent is understandable. But such an option is dangerous. Everything should be done neatly so as not to get an electronic shock. To change the button, you should use a screwdriver to remove it from the place of landing and attach wiring with an old one to the latest. After the substitution is necessary Collect

electrocos, and then check its performance.

The substitution of brushes is required if they collapsed. With all this, it is quite old to remove from the grooves, and the new ones are installed in their place.

The substitution of the bearing is a rather complicated operation, as it can grab and not be removed from the shaft of the motor

Tighten or knock it down carefully so as not to destroy the rotor or landing site

When a trimmer electric motor for the grass fails, and you need to change it with a new one, you should carefully remove the fan and bearings, and then install them in the same place. In terms of substitution, the substitution is actually comparable to the acquisition of a new mechanism. Its conduct in the absence of experience with electric motors is better to entrust to the specialists.

Ordinary breakdowns of trimmers, how to remove them with your own hands

Like any technically not simple device operating in difficult conditions, trimmers for grass can fail. Very often the causes of malfunctions are the violation established by the manufacturer, the operational rules of a mechanized braid for grass. For example, non.compliance with the modes of alternating work and technological break, or irregular lubrication of the gearbox and other parts, which leads to overheating of parts and mechanisms.

Distinctive breakdowns of trimmers, very often manifested in a variety of types of this device, are considered:

  • The failure of the work head of the tool, which in most cases is loosened in violation of the supply of fishing line due to the reason for its confusion or sticking, and also damage from the mechanical factors of the bottom of the coil;
  • breakdown of carburetor motorcosa;
  • A break in the intermediate shaft of the tool, the basis of this breakdown can be cutting the slots with which it connects to the motor shaft;
  • Damage to the connecting bushings of the root bearing installed between the cable and the head of the trimmer for the grass.
  • fuel and air filters pollution.

In most cases, gluing and confusing the fishing line in most cases occurs with its unfavorable quality and violation of working modes, which leads to overheating of the head of the trimmer for grass and fishing line. To remove this breakdown, you need:

  • Remove the lid from the trimmer head, for which press the latches with your fingers, and carefully unfasten the lid.
  • Remove a reel with a fishing line from the head. It must be removed carefully so that it does not jump out and does not fly into the grass placed under it, the spring.
  • Dissolve a confused or sticky fishing line for a trimmer, and charge it by a new. Fold the fishing line for the trimmer in two, and fix the middle into a specialized groove on the middle disk of the coil, which divides the bobbin into 2 compartments.

To wind the fishing line for a trimmer to the coil of a trimmer for grass, first of all, it is necessary to fold it in two, and the middle is fixed in the suitable groove

Having wiped a fishing line for a trimmer to the heel of the head of a trimmer for grass, its free ends must be fixed in grooves on the bobbin

For a trimmer for grass, it is better to use a fishing line for a trimmer of the diameter that is recommended for using the manufacturer of the tool. When purchasing, it is necessary to buy a cord of more popular brands, and not take the first fishing line for a trimmer of lower price and an unfamiliar brand.

If the gasoline trimmer for the grass does not start or stalls its motor after starting, the basis may be a breakdown of the carburetor or pollution of the fuel filter. Damage in the operation of the carburetor can occur when clogging, and sticking on the oil valve film of this device. This can happen if you do not develop a fuel mixture to the end, and leave it in the tank for a long time.

To clean the carburetor, you should remove it from the motor and disassemble, disconnecting the primer (manual pump for pumping fuel), all gaskets and needle. Any detail individually should be washed by the carburetor cleaner, blowing the liquid from the cylinder into all its holes. After washing, when the details are dried out, you should assemble the carburetor and install it in place.

The engine on gasoline can also stall when clogging the fuel filter with the remains of grass and dust. It, like an air filter, must be removed from motorcycles and washed with gasoline. After drying, the filters should be installed in place.

Often in trimmers with a curved bar overheat or the shaft of a mowing head ceases to rotate. This happens when the indigenous bearing is not lubricated or damaged. It is two bushings placed in one another. This part must be smeared or replaced with a new one, if the bushings are broken and the shaft is jammed. To do this, you need to:

To replace the radical bearing, the trimmer head should be removed

To replace or lubricate the root bearing of a trimmer for grass with a flexible shaft (cable), it is necessary to remove the mowing head and casing to protect

To extract the indigenous bearing from the hole of the bar, it is necessary to unscrew the lock screw in advance

To eliminate other breakdowns of a trimmer for grass, including a shaft break or failure of a motor, you will need the help of a professional master who may present a special repair service.

How to independently disassemble and repair an electric braid

Before disassemble and repair the electronic braid, you should check the condition of the outlet and the voltage in the network. If its value deviates from the norms indicated in the operating annotation, then you should not even try to work as a device without a stabilizer designed for appropriate power. Another electric motor may fail. Only after determining the fact that the cause of the trimmer refusal is specifically associated with it, we can begin to analyze the mechanism with the repair goal.

Repair of a gasoline engine, carburetor and gearbox

Problems with the engine can be caused by disadvantages with the piston system, oil seals, rings. To remove them, you need to remove the drive motor.

Find what exactly became a prerequisite for the breakdown, hard. In the presence of a guarantee, the mechanism should be attributed to the service center for diagnosis and repair. If you turn to the specialists for help, there is no ability, then it should be noted that the substitution of piston rings is often required. To do this, it will be useful to disassemble the engine, get the piston. Do this in the subsequent sequence:

  • Remove the lid of the plastic case, unscrewing the screws or pressing the clamps;
  • disconnect the bar with the crankshaft;
  • Remove the cylinder head;
  • take out the piston and rings;
  • As needed, they make their substitution;
  • make assembly in a revolutionary sequence.

How the piston is placed and the seals are replaced during the repair of the motor, it is clearly shown in the rollers further:

With constant use of the lawn mower, a gearbox may break. Histers, bearings wear out in it (they can also break). So that this happens infrequently, this node should often be lubricated. Frequency is actually always indicated in the operational annotation to the model used (not more often than once per season). The video below can serve as an annotation for repair.

Read adjusting the ignition coil on the trimmer video

To grease the gearbox, unscrew the cork and just squeeze the suitable lubricant inside, scrolling the shaft.

Without the help of others, the carburetor can only be removed and cleaned, also change the gasket between it and the engine. The density of the node in home criteria is quite problematic to find. The main thing is to correctly assemble the equipment after repair, so that the trimmer for the grass works without troubles.

Dismantling and repair of the electric part

Dismantling of electrocos for the repair of its electronic part is carried out in such a sequence.

  • Put a trimmer for grass on a flat surface (for example, a table) that does not contain excessive objects.
  • Spin the screws of the lids located on one side.
  • Remove the unscrewed half of the case, getting access to the start button, the electric motor, the brush unit, bearings, electronic connections (these elements are shown in the photo below).

Brush and bearing nodes are presented in the photo below.

The braid for the grass will work without a thermallara, it will only come in handy for the time without the help of others to inspect the temperature of the electric motor, sometimes letting it cool. You can also install a new similar sensor.

The starter start button can be checked by the jumper with a jumper of its contacts. If the trimmer for the grass earns, then the inconsistent is understandable. But such an option is dangerous. Everything should be done neatly so as not to get an electronic shock. To change the button, you should use a screwdriver to remove it from the place of landing and attach wiring with an old one to the latest. After the substitution is necessary Collect

electrocos, and then check its performance.

The substitution of brushes is required if they collapsed. With all this, it is quite old to remove from the grooves, and the new ones are installed in their place.

The substitution of the bearing is a rather complicated operation, as it can grab and not be removed from the shaft of the motor

Tighten or knock it down carefully so as not to destroy the rotor or landing site

When a trimmer electric motor for the grass fails, and you need to change it with a new one, you should carefully remove the fan and bearings, and then install them in the same place. In terms of substitution, the substitution is actually comparable to the acquisition of a new mechanism. Its conduct in the absence of experience with electric motors is better to entrust to the specialists.

The main malfunctions of gasoline trimmers

The most frequent are the breakdowns of the benzos associated with the following structural elements:

  • engine (in particular with a piston system);
  • carburetor;
  • bar;
  • starter (cliff of rope, breakdown or exit from the gearing of the spring);
  • with the ignition system or fuel supply;
  • transmission mechanism (gear);
  • filters and muffler.
  • the appearance during work of motorcycles of uncharacteristic sounds;
  • The lawn mower does not turn on, does not gain the required revolutions or stalls;
  • When operating the engine, the working part does not rotate or slip;
  • leakage of gasoline;
  • excessive heating of individual nodes.

Small breakdowns can also occur, which are found without any special diagnosis:

It is easy to fix minor malfunctions. Repair of a gasoline trimmer for grass in more complex cases will require preliminary diagnostics to clarify the exact reasons. If there are appropriate knowledge and skills of locksmith work, then problems can be eliminated independently, replacing the failed parts.

Device and principle of operation of the starter of the chainsaw

All types of chainsaws, both Chinese and European production, are equipped with starters of the identical design and the principle of action. The universal design of starters allows you to use these devices on both brand chainsaws and on semi.official tools supplied from the Celestial Empire. It is only important to note that some distinguishing features are have instruments of domestic production.

A starter for a chainsaw is a simple mechanism consisting of:

The principle of operation of such a device is also quite simple. When stretching the handle, which is connected by means of a cable with the drum of the ratchet, its movement occurs. The drum when moving is included in the hook with slots of another drum, which is located on the shaft. Thus, manually moves the cut of the saw, which makes several revolutions. As soon as the handle returns to its original position, which is facilitated by the return spring, the slotted connection is lost, which leads to the stop of the shaft. With each movement of the crankshaft in the cylinder, the amount of fuel-air mixture increases, which ultimately contributes to its ignition.

The greater the power of the tool, the more jerks should be made by the starter to start the motor. The return spring is responsible for accelerating the return of the drum to its original position, the manufacture of which is carried out using steel with a high degree of elasticity.

Over time, with the constant operation of the tool, problems are observed with the launch of the engine, or rather, with the functioning of the starter. If such problems arise, then the starter can always be repaired. If the principle and device of the starter is known, then it will not be difficult to repair it with your own hands.

Typical breakdowns and repair of the chainsaw starter

Before carrying out repairs, it is necessary to find out the reasons for the breakdown. Since the product is constantly subjected to dynamic and other types of loads, its failure is not excluded. Frequent causes of starter breakdowns are: rupture of the cable, abrasion or painting several shits of the rattle drum, damage to the spring, a crack of the pulley and others. To determine why the saw does not start, you will need to conduct an appropriate revision of the starting mechanism. Consider the main types of malfunctions, and also find out how to properly repair the product.

Replacement of the cord

The starter cord is a strong rope, which is strong enough to wear, but even its technical properties do not save it from damage. The rope, at each start of the tool, rubs against the starter cover case, which leads to gradual overwhelming and wear.

If the cord is grinding, then to replace it, you need to disassemble the case of this node. After removing the cover, it is necessary to raise the drum, but only so that it does not jump out of his seats. It is recommended to carry out such work together with a partner who will fix the spring, and you will do the replacement of the cable. The remnants of the old cable should be removed, then fixed the new product in the handle and in the frame of the drum. After that, the cable should be wound on the roller, and at the end, assemble the case.

It’s important to know! Before fixing the cable in the handle, you should pass it through the corresponding hole in the starter cover.

How to replace the chainsaw starter spring

If damage to the spring is observed, which is often on Chinese instruments, then the mechanism can only be repaired by replacing it. But if its damage occurred at the place of connection, that is, the ear burst, then it can be repaired.

The repair of the spring is a heating of the destruction site up to 600 degrees, after which it is slow to cool it up to 100 degrees, in which the end is wrapped in the shape of a fragment. Thus, it will be possible to avoid loss of elasticity of the product, which will extend its service life. Although most experts simply carry out the replacement of the product with a new.

The process of replacing the spring is carried out in the following sequence:

  • The clip or drum of the mechanism is originally extracted.
  • A spring is located inside the drum. To dismantle it, you will need to fix its upper part, and then pull the starter handle aside.
  • When the old spring is extracted, you need to install a new. In this case, it is imperative to clean the body.
  • When installing a new spring, you should insert it into the starter, and then get into the groove to the groove.
  • At the end of the work, you can put on the drum and install the starter cover in place.

The detailed process of replacing the spring is considered at

Replacing dogs of a flywheel

If you need to replace the dogs or the answer of the flywheel, then it is also not difficult to do it. This will need to dismantle the flywheel, and then remove the dogs. You should install new dogs exclusively those that were initially (plastic or metal). This is very important, since replacing plastic dogs with metal ones will lead to an accelerated wear of the flywheel. Details of replacing the dogs of the starter of the chainsaw are considered in the video below.

It is important to note that to repair the starter of the chainsaw, you do not need to have special skills or experience. All work can be performed independently if you treat the repair process with all responsibility. Timely conduct of the prophylactic work of the chainsaws will avoid the occurrence of breakdowns when performing work in the field.

Repair of the Husqvarna lawn mower, capacity drop.

Husqvarna 125r- 12 years of operation! Detailed video about finding a malfunction that led to power loss.

The technical characteristics of this model are as follows:

  • A gasoline two.stroke engine with a cylinder of 24.5 cm3;
  • power 0.9 kW or 1.2 liters;
  • fuel tank with a volume of 0.5 liters with a fuel consumption of 0.495 liters per hour;
  • a straight rod with a T-shaped handle with a length of 1483 mm and a thickness of 24 mm;
  • the presence of an anti.vibration system;
  • The cutting system consists of a blade with a thickness of 2.4 mm and a metal knife;
  • Dimensional dimensions: 1844 × 270 × 285 × 132 mm;
  • Weight 4.5 kg.

In this machine, it is also easy and quickly replaced by a cutting element. A universal protective casing allows you to safely replace the cutting part on the rod and the mowing process itself.

The model is equipped with a Smart Start light launch system, the primer pumps air into the carburetor. The fuel pump pumps gasoline into a carburetor after a long period of inaction and provides a quick start.

Layer switch with a return spring. The fuel tank is transparent, which allows you to control the amount of fuel.

The conical gearbox has a high torque of up to 9,000 rpm with a cutting edge located parallel to the ground. This provides the quality of the grass.