Trimmer Repair: Do It Yourself, Do Not Start Causes
Why the trimmer stalls when you press the gas, at high and idle, when heating or opening the air damper
A spit with a gasoline drive is a useful thing for owners of personal plots, lawns, and when the trimmer suddenly stalls, the work to clean the area from grass stops.
The device itself is a rather complex mechanism, so there are many different reasons for its breakdowns. The most common problems are contained in the instruction manual.
To know the reasons why the trimmer stalls, you should be able to effectively repair the device yourself.
What could break
Problems with the brushcutter due to the fact that this device does not start are classified in a certain way by service technicians. They highlight malfunctions with the following nodes of the mechanism:
- an engine in which the piston and bearings may wear out or fail, crack the crankcase;
- fuel supply system, while it is possible clogging the filter or problems with the carburetor;
- mechanical damage to wires, tubes, hoses;
- ignition circuit.
When you press the gas
If the brushcutter stops when you press the gas, then the reasons may be as follows.
- The most common option is a carburetor adjustment failure, which occurs when the drive is subjected to significant loads, after prolonged inactivity of the mechanism, or when it is used in harsh conditions.
- Clogging of the fuel valve, which is eliminated by loosening it, as a result of which gasoline flows normally through the system.
- Loosening and drooping of the cable in the carburetor. Stretching of the fuel hose up to its rupture may also occur, caused by the action of a significant load.
- Clogged breather (check valve), as a result of which fuel does not enter the tank.
If the problem is related to the carburetor assembly, then it can be recognized by the appearance of vibrations of the brushcutter. When the hose bursts or the cable is stretched, these components are replaced.
At high speeds
When the braid stalls at high speeds, this is due to the following problems:
- clogging or sticking of the valve located on the gas tank cover;
- the carburetor is out of alignment under the influence of vibrations arising from the operation of the mechanism;
- problems with the circulation of the fuel mixture;
- air leaks;
- fuel intake hose is cracked or loose.
The carburetor is adjusted based on the operating instructions for the trimmer. To adjust, it is often enough to loosen the tightening of its body. If there are problematic moments with the circulation of the fuel mixture, then it can gradually enter the carburetor. After its development, the engine stalls at high speeds.
At idle, common causes of trimmer stopping are the following:
- contamination, misregistration or improperly adjusted carburetor adjustment;
- clogged air filter;
Replacing the brush cutter air filter
Trimmer air filter
- reducing the speed of the gearbox when it is heated, which is a consequence of the use of an unsuitable fuel mixture;
- throttle clogging;
- air entering the system;
- not enough fuel to operate the brushcutter.
Right after wound up
The unit may stall immediately after start-up, if the carburetor is misregulated or has been incorrectly configured, this causes an uneven supply of fuel. The result of this is that the device begins to vibrate distinctly. To troubleshoot, the carburetor is reconfigured according to the instructions for the mechanism.
The engine also stops when a clogging of the fuel supply valve occurs. In such cases, just clean it. If the brushcutter first worked, but then immediately died out, then perhaps the fuel enters the carburetor assembly with some difficulty. The easing of the valve helps to solve the problem, which ensures free circulation of the mixture in the system.
The stop can also be caused by air leakage in the presence of mechanical damage to the hose (holes, cracks), which takes fuel. In this case, add revolutions to the drive in order to quickly expel air bubbles from the system.
Lawn Mower often stops when heated. At the same time, it starts, works “jerkily” and gradually stops. This process occurs when gasoline in the carburetor begins to boil or the damper is installed in it with a rotary rather than a disk type. In the latter case, the item is changed.
It is found that the trimmer is heated if the ignition wire or coil is damaged. In order for the device to start working normally, replace parts.
When opening the choke
It happens that the unit stalls when the air damper is opened, normally idling. This is due to air leaks in the system caused by cracks in the fuel hose or problems with the seals. The carburetor dosing system may also malfunction, while the brushcutter will stop after opening the shutter.
Carburetor fuel hose
All possible reasons that the brushcutter stalls, and how to eliminate them are contained in the next video
There are many reasons for stopping the brushcutter, but the most common problems in operation are related to its carburetor. They can occur in any cases. The most problematic option is when a serious breakdown occurs, and you will need to purchase new parts or change the brushcutter.
The best trimmer models according to buyers in 2018
UNION BTS-9252L trimmer
Hammer MTK33LE trimmer
Trimmer PATRIOT PT 3555 ES
Trimmer Huter GGT-800S
Trimmer Interskol KB-25 / 33V
Do-it-yourself carburetor trimmer repair
An indispensable tool for a modern summer resident or the owner of a private house is a brushcutter, which allows you to effectively and efficiently bring the surrounding area in order. The period of active use of motokos falls in late spring until the month of October.
Modern units are equipped with powerful and durable ICE, enhanced transmission and main components. Despite this, physical wear and tear, manufacturing defects or improper operation lead to failure of the trimmer.
In order to repair the trimmer with your own hands, you must have at least basic knowledge in the field of technology and little experience in repairing it.
Gas trimmer device
The main unit of any gasoline tool is an internal combustion engine (ICE), which through various methods transmits torque to the actuator. In a modern brush cutter, a duralumin rod (pipe), inside which a drive shaft is located, is used as a transmission element between the motor and the trimmer head.
Thanks to a high-revving engine, the line speed can reach 13 thousand rpm, depending on the manufacturer of the scythe.
In order to eliminate mechanical and temperature damage to the gearbox, a special hole is provided in its housing for introducing lubricant in the form of ointments.
As a headset that facilitates for the owner during long-term operation, all models of motokos are equipped with a durable shoulder strap.
Motocosa cutting part
Regardless of the manufacturer, almost every model comes with fishing line and steel knives.
Trimmer Cutting Part
The cross section of the PVC fishing line for the trimmer can vary from 1.5 to 3.0 mm.
Made of durable polymer, it is subjected to intense wear and tear during mowing and, as a result, breakage. Therefore, from time to time it is necessary to check the presence of fishing line in the head and, if necessary, replace it. It is recommended that you purchase an additional bobbin to quickly replace it with a reel with a finished fishing line.
Types of handles
ICE trimmers on the market today are equipped with a D-shaped, U-shaped or T-shaped handle, where the main controls of the unit are located. For example, in a braid with a U-shaped handle, the throttle key and the stop / start toggle switch are located on the right handle. In the D-shaped version of the handle, the gas adjustment key is located directly on the bar.
Trimmer malfunctions and solutions
Due to the presence of many nodes and parts, repairing the trimmer with your own hands involves the elimination of breakdowns that impede its normal operation. It should be noted the most basic malfunctions of gasoline braids:
- The trimmer motor is not gaining momentum;
- Failure of the cylinder-piston group (CPG);
- Ignition malfunctions;
- There is no connection between the internal combustion engine and the trimmer head;
- Mechanical knocks during the operation of the unit.
- CPG repair
The main unit of any internal combustion engine is a cylinder-piston group (CPG), which can fail due to wear of parts or low quality fuel mixture.
The lubrication of the rubbing units in the brushcutter is carried out by adding a certain proportion of oil to gasoline. This process may be disrupted due to old oil that precipitates. In this situation, when the trimmer starts, the motor overheats and in a few minutes the most expensive breakdown occurs.
To eliminate the malfunction that has arisen, a complete replacement of the CPG will be required, namely: the piston, oil seals, cylinder and piston rings. If you are not an ICE repair master and have no experience working with technicians, then it is unlikely that you can fix the engine without the help of a specialist.
Details on the stages of piston trimmer repair can be found here.
Troubleshooting Trimmer Ignition
If the ignition of the brushcutter fails, the spark disappears on the candle and, as a result, the fuel mixture does not ignite.
Spit spark plug design
It is important enough in this situation not to rush to replace the coil, since the cause of the breakdown may be the lack of contact in the switch on the control handle.
An important point in troubleshooting the trimmer ignition will be diagnostics of the section, where the distance between the side and central electrode should be 0.5-0.7 mm.
In addition, it is necessary to pay attention to the o-ring made of steel on the candle, the loss of integrity or deformation of which can lead to etching of the air from the combustion chamber and, as a result, a decrease in the power of the braid.
Ignition flywheel with coil
If the replacement check of the electric circuit, spark plug and its contacts did not give positive results, then it is worth paying attention to the trimmer ignition module, namely the clearance with the flywheel.
Regardless of the design features and the manufacturer of the brushcutter, the distance between the ignition coil and the flywheel should be no more and no less than 0.2 mm.
To restore the optimal value of the gap, you will need to loosen the bolts of the coil mounting and set the trimmer ignition with a special measuring probe.
Petrol trimmer fuel system
A clear sign of a malfunction in the engine’s power system is the absence of traces of the fuel mixture on the spark plug electrodes, which may be due to the following defects:
Trimmer fuel system components
- due to a clogged hole in the gas tank, a vacuum is created that prevents the normal flow of gasoline into the carburetor;
- due to the low quality of the fuel and the ingress of foreign particles, the fuel filter installed in the tank is clogged;
- the mixture does not enter the combustion chamber as a result of the clogged carburetor.
You can quickly determine the cause of the malfunction by dismantling the fuel hose leading to the carburetor. If the fuel mixture flows out in a thin stream, then you should pay attention to the carburetor. In the absence of a jet, it is necessary to clean the breather with a thin needle (a small hole in the gas tank cover) or replace the fuel filter.
If fuel enters the carburetor, it is necessary to clean it or adjust it. Adjusting the trimmer carburetor implies restoring optimal mixing of the fuel mixture.
Trimmer carburetor with tuning screws
Gas Spit Exhaust System
Trimmer exhaust system
One of the most common mowing malfunctions is the incorrect operation of the internal combustion engine, namely the power drop with increasing speed (the braid stalls).
The reason for this work is the clogging of the exhaust system by particles of burnt oil. Often manufacturers make silencers prefabricated and cleaning is quite simple.
If the design of the spark arrester is not separable, then it must be placed in water with detergents, and then dried with an ordinary or industrial hair dryer.
Frequent clogging of the exhaust system indicates non-compliance with the proportions of oil and gasoline.
Do-it-yourself typical malfunction and repair of a lawn mower
Active use of garden equipment leads to the early failure of individual units or parts. There is no need to dispose of the equipment, as it can still be useful in the future. After all, sometimes having done a little repair of the lawn mower with your own hands, you can return it to its previous working condition.
When the mower doesn’t start
Depending on the area of the lawn and the growth of grass on it, the owners choose the best technique for the characteristics. It is of several types:
- gasoline appliances;
- units with an electric motor;
- battery powered equipment.
The mower, average in price, withstands the climatic conditions of St. Petersburg, Moscow or similar regions for about four seasons. expensive or less exploited garden assistants can withstand 5-6 seasons in the field.
Do-it-yourself lawnmower restoration is also required if winter storage conditions are inappropriate. For example, after use, work surfaces were not cleaned or there was no off-season preventative maintenance. As a result, various problems appear:
- frequent sharpening of the knives of the lawn mower is required;
- the mower just doesn’t start;
- the engine starts, but after a short period the mower stalls;
- malfunctions appear in the carburetor, which requires not only disassembly, but also cleaning and repair;
- do-it-yourself lawnmower repair is required with a significant reduction in power during operation.
Going to an expensive service center is not worth it. Many problems can be solved with minimal cost and carry out repairs on their own.
After each use of the tool, the cutting elements must be cleaned. Change the oil regularly and carry out maintenance to minimize the risk of breakage.
VIDEO: How to lubricate the brush cutter or trimmer gearbox
Recovery of electrical equipment
Mowers, inside of which electric motors are located, most often begin to be capricious due to oxidation of contacts. The terminals are covered with a layer of scale from excess moisture in the room or in another storage place. It is also worth checking the absence of wire breakage in problem areas. A multimeter or some other type of tester is used for this operation.
Dismantling an electric lawn mower
Faults await asynchronous motors. In them, phase-shifting capacitors fail. A similar situation is diagnosed at home is problematic. It can be identified by indirect symptoms:
- a buzzing sound is heard;
- at start, the body twitches slightly;
- significant motor heating occurs even under light load;
- speed decreases.
It is necessary to diagnose the state of the toggle switch / button and the supply voltage to the electric motor. When the described nodes are tested, and there are no abnormalities detected, it is unlikely that they will be able to fix the malfunction of the lawn mower with their own hands. Then you have to use the services of a branded service.
VIDEO: Electric lawn mower does not start well, wedges motor, brake clutch repair
The main problems with gasoline cars
Initial diagnosis is carried out from the stage of eliminating the most obvious failures. When the engine does not start, it is worth checking the presence of fuel in the tank.
If there are leftovers from last season, then it is worth replacing it. After wintering, low-quality gasoline can lose its characteristics, give an unwanted precipitate, or even separate into fractions by density.
In this form, it is not able to start the engine, but only clog the system.
General layout of a gas mower
In the second stage, we find out why the spark does not appear. Its loss will not give the opportunity to ignite the fuel. We remove the cap from the candle and unscrew it from the seat socket with a special key that came with the mower. Next, we put the cap on the candle, bring it closer to the threaded part or the metal element of the motor, and at this time the partner pulls the starter.
Spark plug test
With such manipulations, a blue powerful spark must appear in the work node. She will be able to notice even in daylight. It is important to test this next to the unpainted metal part of the motor that can conduct current.
During operation, rattling in the structure may occur. At first, it does not affect the operability of the mechanism as a whole. However, it can lead to unbalancing and increased noise during operation. It is timely to tighten the mounting bolts on the frame.
Tightening the mounting bolts to the frame
An uneven cut of grass is evidence that you need to sharpen the knife of the lawn mower. To get to them is not so difficult, but it is important to completely disconnect the equipment from the power supply.
You can independently carry out the work with the help of a yew and file or on a grinding emery. It is important to ensure a cut angle that is uniform over the entire line of 30 degrees.
If there are chipped areas in the surface, this is evidence of contact with a hard surface. Replacing them will be quite expensive.
gas trimmer Malfunctions And Solutions
gas trimmer. malfunctions and their elimination.
gas trimmer. malfunctions and their elimination.
The gas trimmer is widely used due to its low price and ease of operation. It is needed to care for the plots and the summer residents and the owners of private houses. Because this tool is used exclusively in the warm season, it is necessary to check and prepare the tool before use. grease rubbing parts, fill in the fuel mixture, put a cutting headset.
In the work of any kind of equipment, crashes and malfunctions occur, in order to eliminate them without the help of others, you need to understand the device of your unit and the principle of its operation. To do this, first, you need to study the operating annotation, which the trader in an irrevocable order applies to the equipment during the sale.
Video: Trimmer Repair: Do It Yourself, Do Not Start Causes
Briefly about the gas trimmer device
An iron tubular rod is attached to the gearbox of a two-stroke gasoline engine. Inside the rod passes the shaft, which transmits torque from the gasoline engine to the cutting mechanism. The cutting headset can rotate at a speed of 10,000 to 13,000 rpm.
The most common trimmer repairs and malfunction of the brushcutter, the causes of their occurrence and methods of elimination (in the form of questions and answers) are described. There must be holes in the gear housing through which lubrication is made. For ease of use, trimmers are equipped with a belt and shoulder strap.
Mowing occurs specifically with a cutting headset, which is located in the trimmer head, it is then most exposed to wear. To change the line, you need to either rewind the newest on the bobbin, or install another reel with the line already wound. A handle is attached to the rod, on which the control levers are located. The cutting mechanism is protected by a special casing.
Two-stroke gas mowers are filled with a consistency of gasoline and oil, which is poured into the fuel tank. In four-stroke. gasoline is poured into the tank, and the oil is crankcase.
The engine does not start. If your petrol trimmer does not want to start in any way, first check the availability of fuel and its quality. Poor quality gasoline can lead to failure of the piston group. Then you are guaranteed an expensive repair.
The main malfunctions of the microwave and how to solve them. Fundamentally the same true to prepare the fuel mixture. The proportions of gasoline and oil are always indicated in the manual.
The mixture should be fresh, because during storage it loses its characteristics.
A common prerequisite that the braid does not start is the contamination of the fuel filter. In this case, you need to check the status of the filter and, if necessary, change it. Do not operate the tool without a fuel filter. If the engine is junk, you should also check air filter.
When contaminated, the part is removed, washed in gasoline and put in place. If this is not possible, it can also be washed in water with a detergent, dried, moistened with oil, squeezed and put in place.
If all of the above has already been tried, and the engine still does not start, then try to adjust its idle speed by tightening the carburetor screw.
Repair of brushcutters do it yourself: analysis of faults and methods of their independent eliminate
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The main malfunctions car clutch and ways their elimination
Good afternoon, today we find out what is called a car clutch, which malfunctions most often.
Quick start. Put the tool so that air filter was at the top. With this arrangement of the trimmer, the fuel mixture gets exactly into the bottom of the carburetor.
If before starting, remove the air filter and pour a few drops of the fuel mixture directly into the carburetor, then install the filter and the cover in place, then most likely the engine will start on the first try. If this does not help, the problem may be in the spark plug. Possible mowing malfunctions and methods for their elimination and much more is possible.
Then you need to unscrew it, check its performance and dry the combustion chamber. A non-working candle can be easily replaced with a new one. But, if the candle is in order, the filters are clean, the fuel is fresh, and the scythe does not start anyway, then you can try closing the air damper, pull the starter once, then open and pull the starter handle several more times.
This procedure is repeated three to five times. If not handled with care and excessive zeal, the starter can be disabled. If the cable broke or the handle breaks, then the repair can be done independently, in other cases it is necessary to replace the entire starter.
Spark plug replacement. Replace when the engine has cooled down. To do this, disconnect the wire from the candle and unscrew it. A candle needs to be replaced if it is heavily soiled or has cracks in the body. Please note that the gap between the electrodes should be 0.6 mm. A new spark plug is inserted into the engine and tightened with a key, then a high-voltage wire is connected.
The engine stalls after starting. Most likely the carburetor is incorrectly adjusted, or it has been misaligned. That the reason for this can be understood by vibration during operation. You can adjust the carburetor yourself, following the operating instructions.
The trimmer may also stall when the fuel valve is clogged. Faulty trimmers and their elimination | page 27. Then it is simply cleared. If the engine stalls abruptly, it may be difficult to supply fuel to the carburetor. We need to loosen the carburetor valves.
Or in the carburetor excess air, here you need to add engine speed so that excess air quickly leaves the fuel system. It is also necessary to check the integrity of the fuel intake hose. In case of detection of mechanical damage (cracks, punctures, etc.
), it must be replaced.
Cleaning and storage. The ribs of the cylinder and the channels in the gas trimmer housing must be clean, otherwise this is fraught with overheating of the engine. Allow the engine to cool before cleaning. The external surface is cleaned with a brush.
Plastic parts can be cleaned with kerosene and other solvents or special means. For long-term storage, the entire mixture is drained from the fuel tank, then the engine is started to generate fuel residues in the carburetor.
Keep the tool only in its pure form.
If do it yourself failed to make repairs, it is worth evaluating what is more appropriate, contact a service or purchase a new trimmer.
Why does a chainsaw stall when I press on gas: reasons and solution
There are frequent cases when owners of chainsaws encounter their breakdown and it does not matter what model of this kind of equipment, since the nature of breakdowns is almost the same for everyone.
Well, here’s the chainsaw stalled and what’s next? Undoubtedly, you can attribute the equipment to specialized services that will repair your “iron friend” for a fee.
But as they say: why pay more?
After all, you can personally disassemble the tool and repair it, since the breakdown can be insignificant, and in the service you will pay a lot.
But naturally, in order to bring the tool back to life, you need to be able to understand the causes of its breakdown and troubleshooting methods.
So let’s learn! In this article you can find answers to questions regarding situations when the tool simply stalls after directly pressing the gas. So let’s get started.
Before you begin to delve into the issues of breakdowns and repair of the tool, let’s first figure out what the chainsaw itself consists of. First of all, I would like to note that this tool belongs to the category of technology, the operation of which directly depends on the internal combustion engine.
Single cylinder engine
It is also important that chainsaws are equipped with a single cylinder engine, and whose work is carried out on such kind of fuel as gasoline.
It is worth noting that, despite the similarity with other tools, it does not have a gearbox.
And it is replaced by a kind of single-stage chain transmission, through which the chain itself (saw) is moved.
In fact, a chainsaw is a fairly simple design, but this does not prevent it from being reliable, practical and able to fully provide direct uninterrupted and cyclic operation even in fairly difficult conditions.
This tool consists of a huge range of certain “vital” elements for its correct and productive work.
This is a carburetor, a direct chain tensioner, a tire equipped with a chain and other elements.
Chainsaws are quite reliable and uncomplicated designs.
Therefore, if you properly care for them and handle them based on the manufacturer’s recommendations, then they fail well, very rarely, various kinds of breakdowns are quickly eliminated.
But if you are faced with this situation and want to repair your tool yourself without resorting to the help of professionals, then delve into the information below.
In fact, it is impossible to determine the reason why the tool does not start or stalls when you press the gas, as there are a lot of factors influencing this. But do not forget that starting from the fact that the chainsaw is equipped with a simple two-stroke engine, conditions such as lubrication, fuel, spark and air are important for its effective performance.
Chainsaw Fuel Tank
Consequently, the carburetor is directly involved in the preparation of the fuel-air mixture, the filter purifies the air from dust, the ignition unit and the spark create a spark, and gasoline contains grease.
That is why it is necessary to search for the causes of this kind of breakdown in a sequential order, starting directly from simple and gradually moving to complex.
And this is an important factor in proper repair, since the person who, without thinking, begins to parse the carburetor, puts her at risk.
Since this kind the unit must be repaired or adjusted directly in special workshops (read about carb adjustment).
- Important is the fact that for trouble-free operation of the tool, it is necessary to be quite careful about fuel directly. Since if this kind of mixture is not prepared correctly, then most chainsaws will simply not start. Therefore, not every owner will guess the reason for the breakdown in the fuel. That is why in order for your tool to always work correctly, you need to use exclusively high-quality gasoline for the mixture.
Since in another case, overexposure of the mixture directly in the canister will lead to the fact that it will lose all its octane properties and this will lead to significant problems with the tool.
Do not forget that by inspecting the candles you can get significant information regarding the breakdown of the chainsaw.
Since if its surface is dry, the reason for this is the cylinder, which does not directly supply fuel. That is why you will have to step by step check the entire spectrum of its submission.
If the candle is all in black soot, then this means that the carburetor is not working properly, that is, it either supplies a lot of fuel or pours oil directly into gasoline.
In order to solve this kind of problem, all you have to do is disconnect the hose (fuel) from the carburetor and pay attention to whether fuel is leaking from it. Since if the mixture flows in a full stream, this means that the breather is not contaminated, but if on the contrary, then the cause of the breakdown was found.
But if after inspection you find that there is no damage to either the piston or the cylinder, in this case the cause may lie directly in the rings (piston). For this kind of check, it is necessary to insert a piston into the cylinder and gently begin to swing it by means of a connecting rod. If suddenly you feel a backlash then the rings need to be replaced, as they have already worn out.
First of all, what you should remember when acquiring this kind of tool is that certain parts of the saw must be replaced with new ones after their useful life has ended (passport). It is for this reason that the instruction should always be at your fingertips, since everything is described in detail there.
These details include: asterisk (leading), bus, part of the system (anti-vibration), as well as a chain.
Since we should not forget that if this “stuffing” is not replaced with a new one at the right time, then these worn out spare parts will negatively affect the rest of the chainsaw.
For this reason, often enough do a check of the depth of the direct tooth extraction. Remember that it should not be higher than a week of 0.5 mm.
Definitely, every thing we buy has its own expiration date and sooner or later it breaks down and how insulting it is when the degree of breakdown is so great that it cannot be repaired.
But you must admit that quite often we simply neglect the technique (see
about proper operation and how to cut down a tree correctly in order to fall in the right direction), and when it stops working, then we try to find ways to fix the breakdowns, turning to a huge number of services.
But remember that even though the equipment breaks, we can extend its “life”.
All that is needed is to simply look after her, run in after replacing parts (see how chains are run in read here) and keep her spare parts clean and tidy. And then, undoubtedly, it will serve for many more years.
It is also important to use exclusively high-quality spare parts and “additives” (see nozzles for chainsaws). Then your equipment will run smoothly, and you simply forget what repair is.
We also recommend that you familiarize yourself with the Calm ms 180 chainsaw.
Why does a chainsaw stall: reasons and solutions
If the chainsaw starts up badly and stalls, there can be no question of the productivity of the simplest sawing operations. Not only budget class tools, but also quite prestigious models of leading manufacturers are subject to spontaneous failures.
The reason for stopping the chainsaw in the midst of work may be:
- poor quality of components and entire assemblies;
- unskilled care;
- the use of low-quality fuel and oil substitutes;
- illiterate exploitation.
Remoteness from service and the high cost of the repair services provided, forcing owners of failed tools to restore their performance on their own.
This option is only possible after the expiration of the warranty. The difficulty lies in the fact that the traces of the dismantling of individual components and assemblies noticed by service specialists can be the fault of refusing to repair more complex and expensive parts for free.
Self Repair Benefits
Experts offer several search options. the reasons for a poor start of the engine or if the power unit stalls during operation. The recommendations are equally valid for household and professional chainsaws.
Owners with experience in operating chainsaw equipment use simple, time-tested intuitive troubleshooting algorithms, which allows you to quickly fix many failures and breakdowns directly in the process.
The success of the work is facilitated by knowledge of the design of the tool and the interaction of all its components, the presence of locksmith and repair skills and operational experience. These same capabilities allow owners to use their chainsaw equipment with high efficiency.
Self-repair provides an opportunity to significantly save material resources and reduce the time of forced downtime.
Determining the nature of the malfunction
The main part of chainsaw failures of any class is fuel equipment. For the ignition system, this figure is an order of magnitude less. Chainsaw stop due to mechanical malfunctions in the practice of domestic and professional sawing is even less common.
Malfunctions of the ignition system are determined quite simply by checking the spark plug and adjusting the clearance in the contacts. After checking the integrity of the wiring, the reasons for the failure should be sought in the operation of the electronic unit.
The absence of a spark at the contacts may be due to the breakdown of the suppression resistor located in the casing of the cuff. To check its integrity, just connect the high-voltage wire to the candle directly.
Sudden stopping of the chainsaw can be caused by a stuck piston in the cylinder or destruction of the crankshaft bearing due to oil starvation or poor quality engine oil.
In the first case, the operability of the tool can restore a few drops of engine oil into the spark plug hole. Repairing damage to the crank mechanism provides for complete disassembly in a well-equipped workshop.
Fuel Equipment Failure
A simple analysis of failures and malfunctions shows that most of them account for unskilled tuning of the fuel system. Upon closer examination, it turns out that the causes of the situation when the engine does not start, does not gain momentum and stalls almost the same.
In most cases, this is:
- air leakage due to loosening of screw fasteners or destruction of the crankshaft oil seal;
- nozzle contamination;
- leakage of the float valve;
- wear on the booster pump seal.
Signs of characteristic failures
If the saw engine does not gain momentum and stalls, does not develop power and stalls under load, most likely there is a lack of fuel or incorrect carburetor adjustment.
The list of possible causes includes pollution of the fuel filter or air intake filter element, too rich or poor gas-air mixture.
Signs of engine operation on a rich mixture:
- slow set of revolutions;
- smoke from a silencer;
- decrease in traction characteristics and an excessive consumption of fuel.
The chainsaw stalls when you press the gas. most likely the mixture is too lean.
A simple way to determine the quality of a mixture
The easiest and most affordable way to check the quality of the mixture is the central spark plug insulator. Brown color of any intensity indicates the correct carburetor adjustment.
The result of working on a rich mixture is the formation of black soot at the insulator, the poor mixture manifests itself as a clean insulator of white or light gray color.
If after a normal start-up and warm-up, the fuel-filled saw periodically stalls during operation, it is recommended to eliminate the vacuum in the gas tank by cleaning the breather. The cause of unstable engine operation may be condensate water that has got into the carburetor’s float chamber.
Engine shutdown in operating mode
In another embodiment, if the chainsaw heats up and stalls, the troubleshooting should be sought in the carburetor settings or in the high-voltage circuit of the ignition system unit.
When it overheats, the spark disappears or becomes so weak that its power is not enough to fully ignite the fuel-air mixture.
The engine also stalls hot when a malfunctioning suppression resistance, which is located in the tip of the spark plug.
Engine stalls when idle
The malfunction is manifested by unstable operation in the operating mode and stalls at idle. The reason for this phenomenon is most likely due to air leakage between the carburetor and the cylinder suction pipe. Failure is eliminated by tightening the screw fasteners.
Chainsaw engine shuts down after reaching maximum speed
The power unit stalls at high speeds due to a mismatch with the stated requirements of the electronic unit’s performance. Failure is more characteristic of budget-made chainsaws made in China.
The reason for the refusal may be:
- lack of fuel mixture in the float chamber due to valve sticking;
- clogged fuel filter or breather located in the fuel tank cap.
The power unit also stalls at high speeds due to a dirty air intake filter. The same symptoms are typical for a situation when the chainsaw in the standard mode started up and died out during the warm-up phase.
Fuel system setup
Qualified carburetor adjustment allows you to bring the power unit to a combination of maximum traction parameters and economical fuel consumption.
The success of the work is facilitated by preliminary cleaning of the air intake filter, warming up the engine to operating temperature, and performing the adjustment in the sequence specified by the instruction.
The result of proper carburetor tuning is:
- a quick set of revolutions without the “failure” characteristic of a poor mixture with a sharp gas supply;
- lack of increased smoke from the muffler;
- stable idle speed.
If a normally working chainsaw engine stalls when the tool is tilted to one side, open the gas tank cover and eliminate the freezing of the flexible fuel receiver.
Almost the entire range of Chinese chainsaws is more or less copied from popular models of European origin, so the structural differences are insignificant. The above recommendations can be used if the Chinese chainsaw fails.
The maintainability of Chinese chainsaw equipment has been enhanced through the unification of the repair stock and the interchangeability of many components and parts with similar models.
When purchasing a brushcutter, you need to be prepared for the fact that, like in all other similar tools, it can also cause breakdowns that require repair.
However, you should not immediately run to the service center and pay a lot of money to the masters who convince you of a serious malfunction in the device.
Benzokosa stalls at high speeds on gas
Perhaps the most common complaint related to gas trimmers is: “Benzokosa stalls.”
Of course, this can be caused by a rather serious malfunction. However, most often the situation is much simpler than it seems at first glance.
To cope with such a problem, first of all, try to figure out its causes on your own, because after finding out the cause, it is much easier to deal with the problem, and sometimes it will even self-destruct.
In fact, the reasons are that when the brushcutter stalls at high speeds, there are quite a few of these reasons.
Another is the presence of malfunctions in the power system.
In this case, the brushcutter will stall at idle. Out of alignment or improper carburetor adjustment can lead to problems with the power system.
Vibrations that occur during the operation of the brushcutter can lead to misalignment.
Incorrect adjustment of the brushcutter can be corrected by simply adjusting it in accordance with the requirements specified in the operating instructions.
In addition, sometimes gasoline trimmers can stall due to the valve located in the gas tank cap simply clogging or sticking.
To find out, try using a scythe by loosening the gas tank cap.
If the device works properly in this mode, clean the valve.
over, the brushcutter may stall due to poor fuel intake in the carburetor.
Why, then, the device starts up, you ask?
The reason for this is that at first the fuel gradually runs into the carburetor and is enough to work at high power.
However, then it is developed and at high speeds the engine begins to stall.
As for the carburetor, the problem here may also be that its body is too tight.
The reason that the brushcutter stalls at high speeds on gas may also be air leaks.
We are talking about the possible presence of space through which air can pass during the heating of the engine.
In addition, be sure to check the fuel intake hose. The problem may be that it is weakly held or cracked at all.
These are the main reasons why the brushcutter can stall.
And also you can look video trimmer selection video tutorial
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What to do if the gas trimmer is not gaining momentum? | Country affairs
If you once purchased a trimmer that works with gasoline, then you probably had to deal with the problem of turning on the trimmer, as well as with such a problem as the petrol trimmer is not gaining momentum.
That is why this article was created.
So what to do if the trimmer that has been working for you for several years now suddenly just stops gaining momentum and the motor simply stalls? In this case, you and I should consider a number of problems associated with stopping the motor.
The motor may stall under various circumstances. Sometimes the cause of incorrect operation of the trimmer running on gas is the clogging of the air filter.
This filter is one of the main reasons why the gas trimmer may stop working.
Different rubbish very often gets into it, dust particles get there, which also clog the filter, so it needs to be cleaned and washed every month, and maybe more often, it all depends on how much power the gas trimmer has, and also how much Often you use this device.
If you have done the filter operations, but the operation of the gas trimmer has remained the same, the gas trimmer is not gaining momentum, what should I do?
Then you should try to remove the filter from the device in order to provide the so-called “relief” of the trimmer. Should help.
The next and quite common problem when working with a gas trimmer is that it simply stalls and does not give any signs of life.
In this case, the problem may be as follows:
The last and most common reason for the breakdown of the gas trimmer is that the cable, which is located in the carburetor section, simply slept.
Interesting! Electric garden drill, here!
Therefore, make sure in advance that it is well tensioned, but not to the limit, otherwise if the load on the gas trimmer is too heavy, this small cable may crack and then you will definitely have to contact the service center, and then also throw a lot of money down the drain.