Husqvarna 128r Lawn Mower Does Not Develop

Description and characteristics of lawn mowers 128R

To make the tool turn on quickly even after a long period of inactivity, it has a built-in primer for priming fuel and the Smart Start system. The maximum working width is 45 cm. The Husqvarna 128R lawn mower is a petrol trimmer with a straight bar and professional handles, made in a bicycle style. This allows for much better control over the work process and the direction of the tool. Straight boom designs are considered more reliable than curved ones. The bike handles can be folded to make it easier to transport lawn mowers.

The weight of the tool is 4.8 kg without filled with fuel, installed cutting parts and protective cover. This ensures that the 128R version of the Husqvarna lawnmower can be used for a long time without interruption. The fuel tank of the petrol trimmer is made of white plastic to make it easier to control the amount of fuel remaining in it. The container for gasoline has a volume of 400 ml. To start the lawn mower, it is enough to gently tug on the cord, as the required starting force has been reduced by 40%.

The tool kit includes:

  • knife with 4 blades for hard and tall grass or bushes;
  • trimmer head (semi-automatic);
  • harness for 2 shoulders;
  • a set of keys;
  • bicycle handle;
  • operation and maintenance manual;
  • protective cover;
  • non-separable rod.

The line is used to remove only small grass.

The Husqvarna lawn mower start button automatically returns to the starting position for easier and faster re-engagement of the trimmer. A special blade for cutting the grass does not crush it, but puts it into swaths. The blade guard and the line trimmer are the same cover and do not need to be removed when changing the rig.

Technical data sheet for Husqvarna 128R lawn mowers:

Description of characteristics Model 128R
power, kWt 0.8
Maximum recommended speed, rpm 11000
Working volume of the cylinder, cm 3 28
Gasoline tank capacity, ml 400
Fuel consumption, g / kWh 507
Muffler with catalyst
The presence of a speed limiter in the ignition system
Weight (without installed casing, blades and filled fuel), kg 4.8
Noise power level, dB 109-114
Rod length, cm 145
Knife diameter with 4 blades, cm 25.5

For a smooth and long service life, experts recommend using Husqvarna 2-stroke engine oil.

Husqvarna lawn mowers can also be repaired by hand, such as replacing a clogged air filter. over, it is located in a convenient and easily accessible place under the cover. No tools are needed to replace it. In the event of a breakdown, it is better to take the equipment to a service center, since ignorance of the principles of operation of individual parts can only aggravate the situation.

The most common malfunctions on Husqvarna 128R lawn mowers are ignition or fuel supply problems. In the first case, the petrol trimmer either stalls after a few tens of seconds, or does not start at all. To do this, inspect the condition of the spark plug. If it is wet, you will most likely need to adjust the carburetor correctly. Or the problem arises due to improper start, then you should carefully study the instructions.

If the spark plug is dry, it means that the fuel mixture does not flow. This is most often due to a clogged fuel filter or hose. The filter should be replaced (it is better to do this every 3 months), and the hose just needs to be cleaned.

A gasoline trimmer of this model can last for many years, the main thing is to follow the operating rules and timely inspect and replace the necessary parts. over, the price of the Husqvarna 128R lawn mowers fully corresponds to its quality and performance.

The Husqvarna 128R lawn mower is worthy of your attention

Husqvarna 128R lawn mowers review. video

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I have been working with Husgwarna 128R for seven seasons on hay making. The volume of work is approximately 2-3 hectares per year. The positive aspects of this lawn mower: it is a chainsaw-like clutch design. it allows rebasing when mowing (gas release when pulling back). For seven years, the circular spring has stretched a little and the inclusion occurs at lower speeds, but this does not affect work and safety. The most important thing is never to burst or jam the clutch (unlike the Chinese ones). Unmatched efficiency per hectare does not exceed 10 liters of AI92 and depends only on the density of the grass and a properly selected disc. Reliability speaks for itself. 7 seasons without repairs. even the candle with which it was sold. The shape of the casing and its location to the disc ensures that the grass is laid in the swath with the correct adjustment of the handle and attachment to the knapsack suspension. Ergonomics and lightness make work a pleasure. Carburetor adjustment is simple and straightforward. When mowing lawns, three-blade discs with pointed blades with a diameter of 255 to 360 mm (the size is taken depending on the evenness of the lawn surface) are excellent. while the quality and performance are not comparable to the work of fishing line. Disadvantages: Attaching the handle bar to the bar will force it to be redone right away. it does not hold, the thread breaks when tightened. I drilled holes through and bolted them, but this season I replaced them with a calm one. The supplied Gross 255-4 disc should not be used on all herbs. Exclusively only on heavy ones. thick, dense and tall grass. On light grasses, he begins, like a flywheel, to spin the scythe to unnecessary turns. But there is not a word about this in the instructions. Well, there is one more thing this is the growth of the mower, its maximum height is 180-182 cm. With a greater height and with correct adjustment, you will “warm” your back with the engine, or you will not be able to adjust the correct angle of the knives at all. The line cut on this braid is not impressive. When working with a knife on a lawn, the effect is several times better, but to reduce the cutting height on flat lawns, instead of the native support cup, I put a smaller one from the Chinese lawn mowers. Well, actually, all the disadvantages.

Excellent machine. Once started to stall, but cleaning the flame carrier fixed everything.

a lawn mower is the best summer and agricultural assistant. The garden tool is designed for cleaning a medium to large area. Basically, it is intended for mowing grass, but no less effectively copes with cutting thickets and even bushes. For this reason, it is successfully used not only in everyday life, but also by utilities. Work on the basis of a gasoline engine determines not only the autonomy of work, but also increased power and endurance.

Features and benefits of gasoline lawn mowers

There are a lot of techniques for mowing grass. It is varied, but in most cases it is designed to perform a specific type of task. Any model of lawn mower is designed exclusively for mowing the lawn. Electric mowers are more mobile, but they also cut only young grass. Both types of gardening equipment cannot help in solving agricultural problems, and therefore are not universal. You can use a special mower for hay harvesting, but the machine is not suitable for yard care.

The main advantage of professional and domestic lawn mowers is that they are versatile. Thanks to the engine power and multifunctional cutting system, they are ideal for mowing grass carpet, clearing weeds in the field, and harvesting large amounts of hay.

a lawn mower is capable of a lot thanks not only to its reliable motor, but also to the cutting system. Most manufacturers offer the standard equipment, which includes a line cutter head and a metal blade. Sometimes the kit also includes a circular knife, which just copes with the most difficult tasks. cutting bushes.

The line is effective for young tall grass. The reels are ideal for easy mowing in tight spaces. near foundations, buildings, fences, around trees or flower beds. In this case, there is no risk of damaging the surrounding plants. The spool with line is easy to use and even if the core is damaged, it can always be lengthened manually or automatically.

It is difficult to mow a tree close with knives and discs so as not to cut its trunk. In this case, the metal can also be seriously damaged without the possibility of recovery. They are designed for outdoor use, making it ideal for making hay. Tough grass and shrubs for the knife cutting system are no problem.

But the advantages of gasoline braids do not end there.

  • Autonomy. This is the first thing that attracts the attention of a potential user and distinguishes the device from an electric trimmer. the lawn mower is independent of the mains power supply and the power supply unit charge. Thanks to this, the range of activities is not limited by anything. The main thing. top up fuel on time.
  • High performance. Since the radius of action is not limited by anything, and the power reserve of the gas engine is sufficient, a large area can be processed with a mower.
  • Convenience while working. The advantages of lawn mowers are not only in technical characteristics, but also in ergonomics. It is necessarily equipped with a shoulder strap or a backpack vest, which provides additional support and an even distribution of the weight of the unit.
  • Maneuverability. Compact size of the cutting tool, lightness of design and ergonomic handles are responsible for comfortable control, both in the open field and in confined spaces.

What is important when choosing a lawn mower?

the lawn mower is selected taking into account the expected scope of work. The larger it is, the more powerful and heavier gasoline devices will be. But it is wrong to rely solely on the area of ​​the site, because there are very diverse models of gasoline mowers on the market with distinctive operating parameters.

The choice is better based on a combination of technical, design and other characteristics:

  • Tact. This indicator directly affects the productivity and service life of garden equipment. a lawn mower with a four-stroke engine is considered to be more productive. It vibrates less, and the noise level is lower. Refueling does not require a mixture of gasoline and oil, which reduces harmful emissions.

The more common type of engine is 2-stroke. It is much lighter and simpler, which makes the motorized braid less expensive. The two-stroke engine is filled with a mixture of gasoline and oil, which cannot be stored for a long time, therefore it is recommended to drain it every time.

  • Engine speed varies from model to model. The higher the rotation speed of the cutting element, the better and more accurately it cuts vegetation. Some lawn mowers are equipped with a special mechanism that automatically adjusts to the desired speed. Remember that revs are dependent on engine power and displacement.
  • The location of the engine can be top or bottom. This does not affect the operating parameters in any way, but it is responsible for comfort. The overhead motor is easier to hold by shifting the load onto the shoulders. In the case of the bottom position, the weight is on the hands, which leads to quick fatigue.
  • Gasoline engine power. For work on a site from 5 to 10 acres, 1 hp will be enough. For processing a larger area, a 3 hp engine may be required Such devices are equipped with an easy start system, which simplifies starting even after a long period of inactivity.
  • Line for fresh and soft grass;
  • Knife for tough vegetation;
  • Thicket cutting disc.
3. Shaft. collapsible or solid. The first option is convenient for transportation and storage, and the second is considered more reliable and durable, since the ingress of foreign particles is excluded.
4. The shape of the bar. Curved makes it easy to trim areas under a bench, near a flower garden, etc. The straight line is not as functional.
5. The manufacturer is a guarantee of reliability. Give preference to proven and well-known brands. They produce high quality products and comply with warranty obligations.

The site Storgom.ua is the official representative of world and domestic brands in Ukraine, which sells trimmers, lawn mowers and other garden equipment along with accessories and personal protective equipment.

We are trusted because:

Dirty air or fuel filter

Another common cause of reduced trimmer RPM is dirty air or fuel filters. In the first case, the problem is that the fuel-air mixture entering the combustion chamber is not sufficiently saturated with oxygen, as a result, not all gasoline is burned out. This prevents the mower from developing its maximum power.

In order to check whether the air filter is really to blame, you need to remove it (after unscrewing the cover for this) and turn on the lawn mower. If it works normally, then instead of the clogged filter element, insert a new one.

If the situation has not changed after the actions taken, then you need to pay attention to the fuel filter. The essence of the problem is similar to the previous case, only instead of a lack of oxygen, little gasoline is supplied for the normal operation of the device. This problem can also be eliminated by simply replacing the filter element. Air and fuel filters are inexpensive. It is easy to change them yourself, and the whole work does not take much time.

It should be borne in mind that operating the trimmer without a fuel filter is prohibited by the instructions, otherwise it will be necessary to repair the piston unit after a short time.

Low quality fuels

The trimmer does not develop revs if fueled with low quality fuel. For this reason, the engine may not start at all or work “jerky”, changing the speed of rotation of the knife or fishing line.

To independently determine the quality of the gasoline used, perform the following steps.

  • The candles are removed with a special key.
  • Examine their working contacts for the presence of a red brick plaque: if there is one, then the fuel used contains significant inclusions of additives.

Candles in general often act as indicators to identify problems with the combustion chamber of a gasoline engine, because they can be quickly removed and inspected.

If a deposit is found, it is necessary to drain the fuel poured into the tank and replace it with a quality one. The lawn mower used must be filled only with the brands of gasoline specified by the manufacturers in the operating instructions. It is also imperative to clean the candles from plaque before reinstalling.

Engine problems

If everything is in order with the fuel, filters and spark plug, then the next source could be a gasoline engine. He may have the following mechanical failures:

  • carburetor problems;
  • problems with the drive mechanism of the engine.

There is a small cable in the carburetor section. It can subside and lead to the problem in question. Therefore, when dealing with the carburetor, you should first check the condition of the cable, and, if necessary, tighten (but not to the limit). The main thing is not to overdo it with a stretch, so that it does not crack under load.

Carburetor cables

Then you need to check the operational settings of the carburetor, which must correspond to the parameters given in the instructions. If they are installed correctly, but there is no desired effect, then the part should be disassembled, rinsed, cleaned, pumped through all its strokes and assembled back. The carburetor itself must be free of mechanical damage.

If it is impossible to independently restore the performance of the carburetor, it is better to replace it with a new part or resort to the services of professionals.

In the event that adjusting or replacing the carburetor does not give the desired result, it is necessary to clean the drive mechanism and lubricate the cable inside it with oil.

Problems related to the engine can be eliminated with your own hands if you have the required skills, but it is better to use the services of a service center for this. Its specialists will carry out a comprehensive diagnostics of the trimmer and establish the exact cause of the drop in speed.

Failure in the fuel circulation system

Failure to properly circulate fuel on the trimmer will also result in the mower not picking up speed. This can be due to the following main reasons:

  • air leaks, which are caused by cracks in the hoses;
  • clogging of the gasoline pump, which occurred due to the use of low-quality fuel or due to the formation of sediment at the bottom of the tank and getting it into the system;
  • dirty muffler or catalyst.

To troubleshoot the considered problems yourself, you need to do the following:

  • go over the gas pump, removing dirt;
  • replace pipes and hoses through which fuel circulates;
  • clean the muffler and the mesh on it;
  • put in a new catalyst, which is expensive due to the precious metal content.

All work on troubleshooting the fuel circulation system can be done independently. But it should be done carefully so as not to lose details, or after assembling the braid there are no “extra”.

Why is the rpm drop on the trimmer?

This common problem has a variety of different causes. While working with the device, you can encounter both obvious malfunctions, the signs of which are clearly visible, and asymptomatic cases. The first option is the simplest from the point of view of finding a problem. If the trimmer does not pick up speed, and there are no clear signs of breakdowns, then you will need to consistently check the most typical cases of malfunctions, and if the cause is found, eliminate it.

Common Causes of Low Speed ​​Lawn Mowers

The problem, when the lawn mower does not pick up speed, occurs mainly with gasoline units. This affects the equipment of various models, for example, Husqvarna, Champion, Stihl.

Such problems are less common with high-quality products than with cheap ones from unknown manufacturers.

Some of the structural elements with which problems may be associated are available for visual inspection, and to check the functioning of the remaining units, the lawn mower will need to be disassembled.

Possible causes of a problem with electric streamers

When using the trimmer, on which the electric motor is installed, problems with a set of revolutions also occur. But they are caused by completely different malfunctions in comparison with fuel streamers. The electric motor does not develop the required rotation speed in such cases:

  • if the voltage in the supply network is lower than the rated value for the electric motor by more than 10%;
  • in case of malfunctions in the soft start system (if this unit is installed);
  • when there are problems with the brush assembly;

Electric scythe brush unit

  • in the event of a burn out of the engine windings;
  • if wedging of rotating parts occurs.

To eliminate the problem with the voltage, you need to check its value with a multimeter or tester in the outlet from which the electric power is taken. If it is less than the minimum permissible value, then to increase it, you will need to turn off all electrical appliances or install a stabilizer.

A prerequisite for the normal operation of the trimmer is the use of an extension cord with a cross-section of conductors corresponding to the power of the streamer motor.

To repair the soft starter, you will need to have the appropriate knowledge in electronics, so it is better to contact a service center. There they will decide on its maintainability or the need for replacement. You can check the button yourself or find the block diagram and try to figure it out.

Soft starter block

The brushes may wear out and contact will be lost as a result, causing the motor to stall. The brushes are easy to replace. The features of the process are determined by the lawn mower model used. Along the way, you will also need to clean all contacting surfaces.

If the windings are burnt, if you continue to mow grass or bushes, the electric motor will quickly burn out. This will be accompanied by the appearance of a burning smell, up to the melting of individual parts. You will need to replace the electric motor.

Wedging of rotating parts occurs for various reasons. To identify and eliminate them, you will need to sort out the drive unit. There are models in which the number of revolutions is automatically adjusted depending on the load, increasing as it increases. at idle, the rotation speed drops.

The video shows an algorithm of actions to identify the most common reasons why the trimmer does not pick up the required speed:

Filter diagnostics for lawn mowers

Another reason why the gasoline scythe stalls is the air filter. To eliminate it, try removing the filter and starting the trimmer without it. If it works out, then you will have to change the air filter to a new one, or at least blow through and thoroughly clean the old one.

The petrol trimmer may not start if the fuel filter is dirty. This is the next step in our algorithm. Here we check the condition of the filter element and, if necessary, replace it with a new one. When replacing, try not to leave the suction inlet without a filter at all, this is prohibited by any operating instructions. Haste can turn into repair of the engine piston group.

Checking the fuel mixture

Before starting the engine of the gasoline streamer, check the presence and quality of the fuel mixture. Do not save, do not be greedy and do not be clever in this matter. Repair or replacement of the piston group will cost you too much (sometimes up to 70% of the cost of a new tool). Prepare the oil-fuel mixture strictly according to the instructions. Calculate its amount based on real needs. Excess gasoline left over after work loses its quality over time.

How to start diagnosing lawn mowers

If the lawn mower does not start or immediately stalls after starting, it is necessary to sequentially check all the main components and assemblies. The verification algorithm is as follows:

  • Fuel tank (fuel quality);
  • Candle and candle channel;
  • Air filter;
  • Fuel filter;
  • Breather;
  • Exhaust channel.

These nodes are most often the source of major problems that can be eliminated after a thorough inspection.

We carry out diagnostics of a candle and a candle channel

If the quality of the fuel mixture is not in doubt, and the lawn mower stalls when started, then a flooded spark plug may be the cause. Here, for repairs, an ordinary candle wrench is suitable (every motorist probably has) and a spare candle.

  • We unscrew the candle and wipe it;
  • Dry it thoroughly (it is not necessary to ignite it);
  • We drain the excess fuel in the chamber through the spark plug hole and dry it;
  • We clean the old candle from carbon deposits using a file or a lady’s file;
  • We set a gap with a distance of 1 mm (you can check with any coin);
  • We put everything back in place and try to start the trimmer.

It is necessary to dry the canal for at least 30–40 minutes. Otherwise, there is a risk of re-filling and a new candle.

If the candle is working, the socket where it is located is completely dry, and the lawn mower does not want to start, lubricate the threaded connection with gasoline. It should be slightly damp. No matter how wonderful a spark the candle gives out, there is simply nothing to light up in a dry chamber.

If the trimmer motor still does not start, you should exclude such a reason as the absence of a spark due to poor contact between the spark plugs and the high-voltage wire. If the connection is of good quality, and there is still no spark, most likely, your ignition unit has “flown”. Here it will not be possible to do without a master, since the part is not repaired, but is sold as a single unit.

Why the lawn mower won’t start. troubleshooting

Caring for the personal plot, summer residents periodically encounter the fact that the lawn mower does not start. There are many reasons for tool failure. To correctly diagnose the problem, the owner of a useful unit in the country needs to know the device and the principle of operation of its individual parts.

  • How to start diagnosing lawn mowers
  • Checking the fuel mixture
  • We carry out diagnostics of a candle and a candle channel
  • Filter diagnostics for lawn mowers
  • Breather and exhaust port
  • complex reasons for lawn mowers failure
  • Rules for the operation and storage of lawn mowers

Breather and exhaust port

Often, “gentle” branded lawn mowers will not start and stall due to a dirty breather. The main function of this element is to equalize the pressure in the gas tank. When this unit becomes clogged, a vacuum is created in the tank, which prevents the supply of fuel. You can eliminate the malfunction by cleaning the breather. You can use a regular needle for cleaning.

Normal operation of streamers with internal combustion engines can be disrupted due to the ingress of dirt into the exhaust duct or clogging of the muffler mesh. There is such a problem on older generation models. The issue can be resolved by traditional cleaning and removal of the anti-spark grid.

complex reasons for lawn mowers failure

If the step-by-step troubleshooting algorithm does not work, and your scythe still does not start or stalls, it is worth inspecting the carburetor and the engine itself. A clogged carburetor can be one of the reasons for erratic tool performance. There are three main problems here:

  • Clogged ducts or nozzles. All this is cleaned by special washes or blown by a powerful jet of compressed air from the compressor. Do not use needles and wires, as the bore may be damaged;
  • Worn carburetor gasket. Exit. replacement of a failed gasket;
  • Violation of tightness. To check this indicator, you can use an ordinary household tonometer, replacing it with a suitable pressure gauge. Watch the readings: if they do not change, everything is fine, but if the pressure starts to drop, then some part of the carburetor is faulty. We’ll have to find it and replace it with a new one.

If everything is in order with the carburetor, then the gasoline trimmer may not start due to wear of the piston group. If chips, scratches or scuffs are found on the piston or cylinder, they should be replaced. Piston rings are subject to mandatory checks. A small backlash of the piston when rocking the connecting rod indicates that it is time to change the rings. This procedure is best entrusted to the specialists of the service center.

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Rules for the operation and storage of lawn mowers

In order for the lawn mower to start well in the future, you need to provide it with good storage and operation conditions:

  • during operation, carefully monitor the cooling system, carefully and in time clean the channels in the housing, as well as the ribs of the starter;
  • if necessary, use solvents, kerosene and other detergents for cleaning;
  • do not clean the tool “hot”. let it cool;
  • strictly follow the instructions for the operating mode, otherwise you may overheat the engine;
  • if you do not plan to use the lawn mower in the next month, the fuel mixture must be drained from it, since over time it decomposes into heavy fractions, which will definitely clog the carburetor channels;
  • after draining the fuel, let the trimmer idle until it stalls, this will help completely remove the remaining working mixture.

Before winter storage, follow these steps:

  • disassemble the braid completely, rinse and clean all the details you can;
  • inspect the parts for damage, if necessary, eliminate distortions, tears, bends and any other malfunctions;
  • fill in a sufficient amount of oil into the gearbox and clean the air filter;
  • you can partially disassemble the motor, rinse, blow out and grease all moving parts;
  • in order to lubricate the piston, you need to unscrew the spark plug, raise the piston to the dead center with the starter, pour a little oil into the spark plug hole and turn the crankshaft a couple of times;
  • if you are storing the lawn mower outside the house, wrap the engine with oiled rags.

Remember, careful observance of the rules will allow you to forget that it is bad to start the lawn mower for several seasons.

Husqvarna 125R carburetor tuning without tachometer (workaround)

the lawn mower is not able to work for a long time. The gearbox and engine will overheat. Mows have an option of less than 15 = 20 minutes, taking a five-minute break. On a hot afternoon, working hours are cut in half. When mowing weeds, sedges, the working time must be reduced.

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If the launch fails, we begin to find the reason for the failure:

  • check the quality of fuel;
  • make sure that the candle is working and the candle channel is clean;
  • check the cleanliness of the air filter;
  • make sure the fuel filter is not clogged;
  • check the cleanliness of the breather;
  • clean the outlet.

complex causes will be found during the diagnosis of a malfunction, leading to a serious repair of the carburetor. Such reasons include clogging of the internal channels of the carburetor, wear of the gasket here and a violation of the density of the internal halls with a loss of vacuum. Repairing lawn mowers at home, if it won’t start, will take patience.

The fuel mixture is suitable prepared with strict observance of the proportions of gasoline and oil. With all this, you cannot use another brand of fuel. To exclude the ingress of dirt, gasoline must settle in glass or iron containers for 4.5 days. Do not use plastic utensils for storing fuel. Accurately measure the oil with a syringe without a needle. Use only freshly prepared consistency, without leaving unused fuel in the tank. If the engine is picky, the lawn mower stalls, when you press the gas, you are guilty of fuel.

the lawnmower will not start on a hot one. press the gas trigger and pull the cord abruptly a couple of times until the engine starts, then pull the trigger later. Will not start. special repair required.

Checking the ignition that allows accounting (software), if it does not start. is carried out in turn:

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  • clean the removed candle from carbon deposits and dirt, dry it, set a gap of 1 mm;
  • connect to a high-voltage wire and check for a spark by pulling the starter a couple of times;
  • if the passage of the absence of a spark, check the high-voltage wire for integrity;
  • change the candle;
  • dry the candle channel;
  • the operation of the ignition coil is checked immediately, it is faulty if the working plug does not spark.

Specifically, if the passage of the malfunction of the ignition coil of the lawn mower does not start on a hot one, it stalls, it works intermittently.

Cleaning, in other words, changing the air and fuel filter will ensure the required consumption of ingredients entering the carburetor. There is an option to wash the air filter in soapy water or change it differently. If nylon fabric is used, it is washed, the porous felt filler is replaced. Change the fuel filter carefully without leaving the intake manifold open. Whether it is necessary to change the air filter is determined if the engine starts with the air cleaner removed. Is it necessary to change the grid on the fuel supply, if the lawn mower does not start, a dry candle will give a hint.

Breather, gas tank air inlet. If it becomes clogged, a vacuum is created in the tank and the mixture does not enter the carburetor. Of course, blow out the hole with air or clean it with a needle. Clean the exhaust duct, remove the anti-spark screen of the muffler.

The highest and low engine speeds, smooth idle speed are controlled by the carburetor. The stable operation of the lawn mower depends on the amount of the supplied combustible consistency and air, their ratio. the lawn mower will not start if the carburetor is not properly adjusted. The order of the option of the device for supplying fuel at low speeds (L), high speeds (H) and idle (T) is regulated by the screws of the same name:

  • The chainsaw should run for at least 10 minutes, because the adjustment is carried out on a hot.
  • Screw H is turned smoothly to the highest speed, then turned by ¼, counterclockwise, reducing the speed of rotation of the motor shaft.
  • Idling is adjusted with the T screw, making sure that the braid does not twist.
  • The screw L is adjusted, at first opening the throttle very much, and at the end it smoothly lowering the speed to stable low.

After adjustment, a serviceable one with cleaned filters, a tested ignition must ensure the operation of the engine. If the passage of a carburetor malfunction, after its repair and again, it will be necessary to configure the supply that allows accounting (software) before starting the lawn mower.

The rarest breakdowns that prevent lawn mowers from working are:

  • malfunction of the rewind spring;
  • broken or stuck starter pulley;
  • faulty starter assembly.

The most important malfunction, the elimination of which is required, is associated with a change in the motor, and possibly a breakdown of the piston group of the motor. The repair cost will cost approximately 70% of the product price. Understanding the reasons why the lawn mower won’t start will help

There are no unnecessary phrases in the operating annotation, everything that is offered is focused on the trouble-free operation of lawn mowers. Cleaning all parts after each work cycle facilitates the easy removal of uncured residues and dirt. It is necessary to clean only the cooled nodes. This technique contributes to the quality of the air cooling of the motor and gearbox.

For refueling, you need to use fuel with the oil recommended in the annotation. If the combustible mixture is left in the fuel tank, the oil will float up and, when started, will land on the damper, impairing its adjustment. The mixture sediment and clog the fuel supply in the carburetor.

When storing the equipment for the winter, conduct an audit, lubricate the gearbox and piston system, Wrap the entire saw in oiled rags and store in a dry place.

It is impossible, unsafe for the tool and the health of the mower, to use an iron cable instead of fishing line. It cuts more efficiently, but the load on the gearbox and engine increases. A worn-out piece of wire, when it comes off, flies with the movement of a bullet. Effective mowing leads to early wear of the piston group of the motor. For more efficient mowing, it is suggested to use the “star” line profile.

Adjusting the carburetor Husqvarna 128r lawn mowers photo

Testimonial: Husqvarna 128 R petrol trimmer. Mow grass without undue body movements? Just!

Hello, honored readers of the Otzovik!

In our polar regions there is a widespread joke “with a beard”: “Our northern summer is short and with little snow”. That, nevertheless, there is a grain of truth in this: summer begins much later in our country, and ends much earlier than in the middle zone of Russia. Well, frosts with snowfall, say, in August, are not uncommon. Therefore, as the temperature becomes stably positive, the vegetation begins to grow violently, trying to have time to spread the seeds as quickly as possible.

For us, the time for “haymaking” is coming: since the yard is almost overgrown with dandelion, timothy, wheatgrass and other weeds in almost a certain number of days, we have to pick up a scythe and try to do something similar to a lawn. Carburettor adjustment Husqvarna 137, carburetor is like Husqvarna 240 or 260. That was until last year.

Last summer I decided to keep up with the times and get a trimmer. I dismissed the electronic options outright. the prospect of lugging a 30-meter extension cord did not smile at me in any way. From gasoline trimmers, he braked at Husqvarna, known for the quality and reliability of its own products.

Little about properties. 2-stroke engine, volume 28 cm3, power 0.8 kW (1.1 l / s).
Engine speed. up to 10,000 rpm.

The gas tank (more precisely, the gas tank) has a volume of 400 ml.

The trimmer engine is equipped with a Zama carburetor. Smart Start system provides an easy and high-spirited engine start.

There is a plate on the carburetor cover with the sequence of actions when starting a cool engine. for the very forgetful.

The muffler is covered with a casing, which prevents accidental contact with heated parts.

The trimmer handle is asymmetrical, it can be moved along the bar to fit a specific person.

Trimmer control is placed on the right handle. I, right-handed, feel comfortable. Adjusting the carburetor of the Husqvarna 142 chainsaw…. But, there is no ability to shift control to the left, which may create some inconvenience for left-handers.

The button for stopping the motor (Stop), after moving upward, returns to its original position, which excludes attempts to start the motor with the electrics turned off

Adjustment of engine speed is carried out by the trigger button located in front of the right handle.

Adjusting the carburetor Husqvarna lawn mowers 125, 128

How to adjust the carburetor for Husqvarna lawn mowers 125, 128 (without tachometer) Part number: 5450818-48.

Husqvarna 125R carburetor tuning without tachometer (workaround)

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

We run over to the main working part of the tool.

The working part is covered with a protective cover.

Despite the fact that an iron disc for grass is included with the trimmer, in addition to the trimmer head, I prefer to mow specifically with the trimmer head, fishing line.

To extend the line to the desired length, you need to press the blue button and pull the line.

Changing the line is easy. To do this, you need to press on the 2 latches on the sides of the disk and drown them a little.

remove the head body.

and change the line. The back case is simply put on until it clicks.

If you accidentally stretched the fishing line to a great length, it’s okay: there is a knife on the body of the protective casing, which, at the first revolutions of the engine, will cut off the excess fishing line.

Let’s continue. To hang the trimmer on the harness, a loop is attached to the bar in a comfortable place. Adjustment of its position can be carried out in place, after putting on the ammunition.

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