Lawn Mower Does Not Start After Winter

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The petrol lawn mower will not start. Why?

The lawn mower won’t start

If at the first start, your new lawn mower refuses to start, try the following: based on the air temperature outside, set the appropriate position of the air damper (at temperatures less than 30 ° C. “damper closed”, over 30 ° C. half-closed position), then pump into the carburetor fuel and gently, but rather sharply, pull the starter handle until you feel some resistance. Repeat these steps in the same sequence several times. A brand new instrument must start. If this finally happened, you can safely get to work, having previously fully opened the damper.

If the lawn mower is no longer new, then it is necessary to start its inspection from the gas tank. If the device has not been put into action for a long time, then it is necessary to drain the old gasoline, which has the feature of “running out”, ie. Lose its octane properties and refill with fresh fuel mixture. The gasoline / fuel ratio, as well as the required grades, are usually indicated in the operating instructions for the tool.

Now you need to check the spark plug. either the problem is in it itself or in the fuel system. The candle must be carefully unscrewed and its condition assessed. If the candle is heavily flooded or there is black carbon on it, then it must be removed, cleaned and dried. Drain the excess fuel, if any, from the spark plug holes, drain the cylinder itself, then screw in the dried, or, even more desirable, a completely new plug. If the plug was initially completely dry, you need to look for a problem in the fuel supply system. Check the fuel filter first. To do this, disconnect the suction hose and remove the dirty filter from it, clean it and reinstall it, or replace it with a new one. If this does not help, you should contact the service center specialists.

Will not start after winter

In this case, you just need to drain the old and, possibly, even frozen fuel and fill in the freshly prepared mixture. Then you need to make the same manipulations as during the first start of the lawn mower.

Starts up and stalls

If the mower stalls after starting, check the air filter. When this filter is heavily clogged with dust, it stops passing the required amount of air into the carburetor and allows dust to enter the fuel mixture. It is necessary to carefully remove the dirty filter, clean and rinse in gasoline. If the air filter is clean, and the tool still stalls, then it is better to contact a professional to determine the cause of the malfunction and eliminate it.

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The lawn mower stopped working after winter

If, after the winter period, the lawn mower stops starting, then most likely it will be necessary to conduct a full inspection of the inside of the tool. The most important components that could deteriorate after cold weather are the fuel system (air filter, fuel filter, carburetor). In order to try to fix a not working lawn mower, you need to purge all filters, as they often get clogged. In addition, it is the filters that suffer primarily when the tool is idle for a long time.

In the event that this is not the first time you have a problem with your lawn mower after a long period of inactivity, there is a possibility that this could be the result of using the wrong or poor quality fuel. The user manual will definitely indicate the type of gasoline that is most suitable for the operation of your lawn mower. Buy fuel only at proven gas stations, as small businesses often sin with the quality of their product. And the use of low-quality gas station will significantly reduce the duration of the work and life of your lawn mower.

Even if you use only high-octane high-quality gasoline, but prepare the fuel mixture in advance, this is one hundred percent the cause of the problem, since the ready-made solution of gasoline and oil cannot maintain the necessary qualities for a long time. The mixture should be made clearly in the amount that will be used at one time. If fuel remains after work, it must be removed, but it is better to calculate more accurately in order to use it completely.

If the lawn mower stalls immediately after

With such symptoms, several options for the development of events are possible.

First, you need to check whether the valve that supplies air to the fuel tank has deteriorated. Quite often, this element becomes clogged, and this leads to the fact that a vacuum is created in the fuel tank. And this, in turn, entails another problem. the fuel ceases to flow into the carburetor and it simply does not have anything to work on. Because of this, what happens is that the lawn mower has the energy to start, but then stalls.

This problem can be corrected quite simply. you need to clean the air inlet valve to the tank. After that, the lawn mower starts with a slightly unscrewed fuel tank cap. If all is well, then the problem is solved. But if the tool still does not work, then move on to the next possible reason.

The second problem in which the lawn mower starts and stalls is a malfunction or clogging of the fuel filter. First clean this filter, and then revise the parts in the carburetor so that there are no breakages.

If the lawnmower starts working even after cleaning the air filter, you must take it out and try to turn it on without it. If it starts, then you just need to change the filter for fuel.

How to start a lawn mower that doesn’t work?

On the farm, we need a lot of different tools. Anyone who has his own plot and house knows how much is required to maintain it in good and tidy condition. a lawn mower is one of those tools that owners quite often want to purchase, since it performs very important and necessary functions on a home site.

But, as with many things, various problems can happen with the lawn mower. One of the most common problems is the lawn mower won’t start. This can happen for various reasons, and in order to deal with this problem, you need to understand what is the vulnerable part in your case. An important aspect is also whether the lawn mower has started up before, or whether problems started to occur immediately after purchase. In any case, you need to consider the common causes of problems, because it is very likely that you can even fix it yourself.

If the lawnmower does not start in a cold

This problem is quite common and can be temporarily resolved with a small action plan. There is a possibility that you incorrectly start a cold engine. And here’s how to do it:

  • When starting a lawn mower on a cold one, you do not need to immediately press the gas;
  • Tilt the tool so that the air filter is at the top;
  • Press on the fuel suction about five or six times;
  • After that, you can move the gear lever and set it to the “start” position;
  • Only then should you try to start the mower by pulling the starter a couple of times. It is necessary to pull quickly enough, without making too long a time interval between approaches;
  • After the motor has started to run, wait about ten seconds for it to warm up. Next, you can and should disable the launch.

After performing these manipulations, the lawnmower should work normally.

If your newly purchased lawn mower won’t start

Not only tools that have already seen life can suddenly stop working. Sometimes we find problems even with the things we just bought. Of course, if no one has ever used the lawn mower, then you can easily give it back under warranty or change it to another, serviceable.

First, make sure that you did everything correctly, reread the instructions carefully and analyze your actions. Pay special attention to the section on turning on the lawn mower for the first time, how to interact with it, what to do with a new purchase. Very often the very first launch of a new tool differs from the subsequent ones, because of this it is better to first read how to do it correctly.

Also, a very important section is the one that says about refueling lawn mowers. It is very important to carry out these operations correctly and on time, to use high-quality and suitable fuel. The first pumping of gas may also differ slightly from the subsequent ones, so read this information too.

READ  Chainsaw Does Not Start Causes And Remedies

After you study as much information as possible from the instructions, you will be able to understand the principle of operation of this product, and it will be much easier to work with it. Never neglect to read the important text that manufacturers attach.

The most common reasons that prevent a lawn mower from starting are as follows:

  • Unsuitable brand of gasoline or its poor quality;
  • Inappropriate proportion of gasoline and oil. This is one of the important parameters for lawn mowers, so make sure that everything is carried out according to the instructions;
  • The filter is clogged. Because of this, the fuel will not be additionally cleaned, and getting into small debris is not so uncommon;
  • There is no spark. It can disappear for various reasons, below we will consider whether you can do something yourself at home.

In any case, you will need to analyze your early actions and see what you can do before handing over for repair or replacing the tool.

No spark when trying to start a lawn mower

The spark may disappear due to a malfunction of the spark plug, due to faulty contacts or wires, due to the displacement of the gap between the spark plug and the wire.

First you need to check the candle. To do this, you need to get it out of the lawn mower and attach a wire to it. This design is applied sideways to the motor casing and try to “start” the tool by pulling the starter. Watch carefully to see if a spark appears during these steps. If there is no sparking, then the fresh ignition is inoperative and must be replaced.

Checking the health of the wires is done in the same way, but with a new plug. While pulling on the starter, watch for a spark. If even with a new spark plug does not occur, then the fault is in the wiring or in the contacts. You need to buy new ones and make replacements.

the lawn mower will not start on a cold

When starting a cold engine, it is not recommended to press the gas. Tilting the mower so that the air filter is on top, press the fuel suction button 5-6 times, set the function switch lever to the “start” position, pull the starter cord several times until the engine starts. After a few seconds of running the motor, turn off the starting system.

the lawnmower will not start, the spark is gone

The loss of a spark entails checking the contacts and the correctness of the gap between them, the conducting wires to the candle and the candle itself.
The way to check the spark is to unscrew the candle, connect a wire to it, put the candle sideways to the motor casing and pull the starter several times as if starting the lawn mower, while you need to look at the coal and the contact of the candle, a spark should run between them.
If there is no spark, take a new candle, do the same procedure, if the spark cannot be traced, then there is a problem in the wire or contacts, it is better to replace them.

the lawn mower starts and stalls. What to do?

There is a spark, and everything seems to be normal, but the mower will not start, in such cases you should check the air inlet valve to the fuel tank. A clogged valve leads to the creation of a vacuum in the tank, in which the carburetor does not receive enough gasoline, so the lawn mower will start, but then stall. To exclude this reason, you need to clean the valve and try to start the lawn mower with a tank cap that is not completely twisted.
2. If this does not start the mower, remove and clean the fuel filter, and check all carburetor parts and then try to start. The lawn mower does not start again, the air filter is disconnected, try to start without it, if the mower starts up, the reason is in the air filter, replace it.

the lawn mower won’t start after winter

In such cases, the unit must be serviced. Remove the fuel system, including filters (air, fuel), disassemble the carburetor, clean and rinse each unit. Blow out the filters with air. Pay attention to fuel quality and octane number.

It should be borne in mind that products of such well-known companies as STIHL, Husgvarna and other brands will not run on cheap, low-octane gasoline.
Suitable fuel for them is from the AI ​​brand. 92 and higher from car gas stations and then from well-recommended ones, since there is also bad gasoline at gas stations. The use of high-octane and high-quality gasoline will determine how long the lawn mower will be used and how long it will last.

It is necessary to take into account one more fact that when the diluted fuel mixture is stored for a long time, its working qualities drop, which also leads to consequences in which the lawn mower does not start. Therefore, it should be diluted in portions, that is, the amount of the mixture that is produced at a time.
The operating instructions clearly describe and explain the mixing ratio of gasoline and oil. Strict observance of the correct proportions will at least save you from several questions, why the lawn mower does not start and what to do in such cases.

The lawn mower will not start, or will start but stalls. What is the reason?

To understand this, you need to know the principle of operation of the unit as a whole. It also happens that, just bought, the new saw does not start, and the running around the service centers begins, in such cases it is recommended:

Read the instruction manual carefully;
study in detail the method of first starting and running in lawn mowers;
try to understand how the product works;
how gasoline is pumped up and so on.

Causes of malfunctioning lawn mowers:

The quality of the gasoline is poor;
incorrect proportion of gasoline and oil;
clogging of the fine filter;
the spark was gone.

the lawn mower will not start when hot

If the lawn mower was recently in operation and has not yet had time to cool down but does not want to start. press the gas trigger, pull the starter cord sharply several times until the engine starts and only then the gas trigger is released. If enough time has passed and the lawn mower has cooled down, then it should be started as if it was cold.
If the above methods did not help, the lawn mower did not start, then you should contact the service center.

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Checking the condition of the fuel and air filters.

If everything is in order with the fuel quality, the chainsaw engine may not start due to clogged fuel and air filters. To diagnose these elements, it will be necessary to perform a number of manipulations associated with their dismantling.

For the fuel filter:

  • Disconnect the gasoline supply channel from the carburetor;
  • Pump up fuel.

If there is little or no pressure in the pipe, disconnect the filter. Before this, free the tank from the mixture and remove the filter element itself. Dismantling is done with a wire hook. A clogged replacement cartridge that causes a poor starting of the chainsaw engine can be cleaned, but it is best to replace it with a new one. When using the tool in dusty conditions, it should be cleaned on a regular basis.

A clogged air filter can cause the chainsaw engine to run erratically, making it stalling or difficult to start. Dust and dirt deposited on the adsorbent material impede the flow of air into the system, make the fuel mixture so rich that starting the tool will sometimes be difficult.

Checking the air filter is one of the first steps in finding the cause of a poor start.

Care should be taken when removing the air filter, as dust accumulated on the surface of the saw during operation can enter the carburetor. And this is fraught with more expensive repairs. After detaching the cartridge, thoroughly clean it from accumulated dirt and rinse it with the addition of detergent. Dry the element and put it back in place just as carefully.

Identification and elimination of obvious faults of the chainsaw.

To determine the reason why the chainsaw does not start or stalls when starting, it is necessary to troubleshoot the tool. The essence of the procedure is to consistently inspect the condition and operation of the main working elements of the saw motor. At this stage, we check:

  • Spark plug present;
  • Fuel supply;
  • Filter status;
  • The operation of the breather of the stalling unit built into the fuel cap;
  • Discharge duct function.

Checking the spark on the spark plug and troubleshooting.

The first step in looking for reasons why your gasoline saw won’t start is to check the spark on the spark plug. There are many factors that affect the performance of this element. However, the main ones at the initial stage of instrument troubleshooting are:

  • Incorrect carburetor adjustment;
  • The presence of more than it should be, the amount of oil in gasoline;
  • Clogged air filter.

All of them contribute to the formation of carbon deposits on the spark plug electrodes. In 50 cases out of 100, the saws do not start on a cold one due to the absence of a spark due to carbon deposits on the electrodes and their corrosion. As a result, the gap either decreases or increases.

Checking the spark plug with an idle chainsaw

Checking for a spark is fairly easy. This will require:

  • Remove the tip of the high-voltage wire;
  • Unscrew the candle;
  • Put the tip back on;
  • Lean the candle with a skirt against the cylinder;
  • Start with a starter.

If a good spark is observed between the electrodes at the time the chainsaw engine starts, then everything is in order with the ignition unit. If it is not there, then it is worth cleaning the element itself and checking the gap of the electrodes. If necessary, using a special probe, adjust the distance between the contacts.

There may be no spark on the spark plug for other reasons. Of the main faults affecting the poor start of the chainsaw and the unstable operation of the internal combustion engine at idle, from which the tool can stall, include the following:

  • Overflow of the spark plug channel with fuel;
  • Lack of contact between the high-voltage cradle and the tip of the candle;
  • Failure of the ignition unit.
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How to start a cold chainsaw if the candle channel is constantly flooding with gasoline? To eliminate the problem while starting the tool, use the following algorithm:

  • Unscrew the candle with a special key;
  • Wipe it with a clean and dry cloth;
  • Dry for 20. 30 minutes;
  • Remove carbon deposits with a file and adjust the gap between the electrodes;
  • Drain the remaining fuel from the spark plug channel and dry it;
  • Collect everything and try to start the mechanism.

If there is no spark and poor contact of the high-voltage cradle with the spark plug tip, check the connection. The check can be done using a conventional tester. If a defect is found and it is eliminated, the chainsaw should start without any problems.

If the check showed that the contact is reliable, and the saw does not start further, look for the cause in the ignition unit. As a rule, a faulty unit cannot be repaired or restored. A complete replacement is required here.

Searching for reasons why the chainsaw won’t start

Amateur and professional chainsaws are complex devices. The service life of their two-stroke engines, components and assemblies has its own limitations. For this reason, quite reliable and expensive tools, along with cheap Chinese units, periodically fail and refuse to start. The situation when the chainsaw does not start or stalls is not very pleasant and sometimes confuses the user. How to identify and correct a malfunction by returning the instrument to work.

  • Identification and elimination of obvious faults of the chainsaw.
  • Checking the spark on the spark plug and troubleshooting.
  • Determine the availability of fuel and its supply.
  • Checking the condition of the fuel and air filters.
  • Checking the breather and cleaning it.
  • Chainsaw outlet check.
  • What to do if the chainsaw won’t start further?

Determine the availability of fuel and its supply.

First you need to make sure that there is a fuel mixture in the tank of a chainsaw that does not want to start, and it regularly enters the carburetor. With a full tank, we check how the mixture is fed through the gas line. Disconnect the fuel system pipe from the carburetor and try to pump it up. In the case of a complete order, when pumping, gasoline will be supplied in jerks in accordance with the standards set by the manufacturer. Poor or no fuel supply can result from:

  • The fuel supply channel is clogged;
  • Debris-clogged fuel filter.

Often the reason for a poor start of the chainsaw can be a tank that is too full. In this case, you should pay attention to the presence of smudges under the saw case cover. If present, see the connection of the gasoline feed pipe to the carburetor. Most often, it is squeezed out by pressure when the tank cap is screwed on, which is filled under the very neck, which prevents the engine from starting.

The quality of the fuel mixture can also be one of the reasons why the chainsaw does not start. If, after completing the work, the remaining gasoline is not drained, and the tool is left for long-term storage (more than 2 weeks), then the processes of resinification and polymerization of components will begin to occur inside the tank. What can cause carbon deposits on the piston, rings and cylinder liner. Therefore, always prepare the mixture only in the required amount before work.

Chainsaw outlet check.

One of the reasons that a chainsaw does not start well may be a clogged exhaust channel or its muffler. At the same time, a drop in power is noted in the process of sawing sawn timber and logs. This is most often due to resinous deposits on the spark arrestor or muffler channel, which are formed during the combustion of a poor-quality mixture of gasoline and oil, which impede the removal of exhaust gases.

Resonator clogged with carbon deposits can cause poor starting of the gasoline saw.

Eliminate the cause of the poor start of the chainsaw, in this case, you can remove the accumulated combustion products. To do this, perform a number of manipulations:

  • Remove the muffler by unscrewing the screws;
  • Remove the cooling panel and gasket;
  • Remove the spark arrester;
  • Disassemble the resonator housing;
  • Wash all elements from carbon deposits with detergent;
  • Let them dry completely;
  • Collect everything in reverse order;

Checking the breather and cleaning it.

The breather is another element, from the improper operation of which the chainsaw may not start or stall during the sawing process. This element is located on the fuel tank cap in the area of ​​the air hole. This is a kind of valve that does not allow gasoline to flow out and equalizes the air pressure required for the free flow of fuel into the carburetor.

If the breather is dirty, the working chainsaw stalls, and when started it refuses to start. The thing is that air stops flowing through the hole. As a result, a negative pressure (vacuum) is created inside the fuel tank, preventing the flow of gasoline to the carburetor.

Defining the problem is pretty simple. Disconnect the fuel hose from the carburetor and see what happens to the gasoline. If it flows out freely in a good trickle, then everything is in order with the breather. If it is absent or it flows weakly and intermittently, then the reason is identified. the breather is clogged with dirt. You can solve the problem by cleaning the air hole with a regular needle or a powerful jet of compressed air.

What to do if the chainsaw won’t start further?

If the initial inspection did not give anything or the defects were eliminated during the search, and the chainsaw does not start further, then you need to look for more serious reasons. It is best to identify and eliminate such breakdowns in a service center. However, with experience, you can find and eliminate them yourself. What to diagnose and check?

  • Compression in the cylinder;
  • Compression in the crankcase;
  • Carburetor operation.

In the first case, checking the compression in the cylinder will allow you to find out the state of the cylinder-piston group (CPG) of a chainsaw that does not want to start cold. For this you need a compressometer. The device is screwed into place of the spark plug and the engine is idle. Measurement of readings allows you to judge the state of the CPG. In the absence of a compressor, the compression in the cylinder can be determined offhand as follows:

  • Place your finger on the candle hole;
  • Try starting your chainsaw engine.

By placing your finger on the spark plug hole and pulling the starter, you can check the compression in the cylinder

If you feel that your finger is pulling strongly into the candle channel, then the compression is all right. The absence of vacuum in the chamber indicates a malfunction. The cylinder-piston group needs a more detailed inspection, which will give an idea of ​​the condition of the piston and cylinder, piston rings and bearings.

The chainsaw may not start on a cold one due to the lack of compression in the engine crankcase. The main reason for this is damage to the gasket placed between the cylinder and the crankcase. It is quite easy to detect the lack of compression:

  • Disconnect the upper tube from the carburetor;
  • Pour gasoline into a regular cork;
  • We immerse the removed tube in the fuel;
  • We pull the starter several times.

If the fuel from the cap is sucked in when starting the chainsaw starter, then everything is in order with the compression. If not, see the gasket.

If the fuel is drawn in, then everything is in order. the gasket is intact. Otherwise, you will have to purchase a repair kit and replace it. See how to do it. Why the Chinese chainsaw won’t start:

Starting the tool can be complicated by improper operation of the carburetor or its breakdown. It often happens that during the sawing process the fastening screws loosen and air is sucked into the cylinder. Check that the carburetor is securely attached. Inspect it for fuel leaks. There can be a lot of reasons for the malfunction. It is possible to pinpoint the malfunction, eliminate it and fine-tune the carburetor only in a service center.

After going through the step-by-step troubleshooting of the chainsaw engine, you can find the malfunction, fix it yourself and successfully start your working tool. Do not take on jobs that you are not sure about. Entrust the troubleshooting to specialists from the service center.

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 fall, 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 petrol trimmer may not start due to wear of the piston group. If chips, scratches or scuffs are found, the piston or cylinder 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.

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.

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, preventing the supply of fuel. You can eliminate the malfunction by cleaning the breather. You can use a regular needle for cleaning.

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Normal operation of streamers with internal combustion engines may be impaired due to dirt entering 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.

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 possible, 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 due to a dirty fuel filter. 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.

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

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 (do not ignite);
  • 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.

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, a reason such as the absence of a spark due to poor contact between the spark plugs and the high-voltage wire should be ruled out. If the connection is of good quality, but 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.

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.

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, because Over time it breaks down into heavy fractions, which will definitely clog the carburetor channels;
  • After draining the fuel, let the trimmer run at idle speed 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 parts you can;
  • Inspect the parts for damage, if necessary, eliminate distortions, tears, bends and any other malfunctions;
  • Fill the gearbox with sufficient oil 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, lift 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.

The lawn mower will not start, or will start but stalls. What is the reason?

To understand this, you need to know the principle of operation of the unit as a whole. It also happens that, just bought, the new saw does not start, and the running around the service centers begins, in such cases it is recommended:

Read the instruction manual carefully;
study in detail the method of first starting and running in lawn mowers;
try to understand how the product works;
how gasoline is pumped up and so on.

Causes of malfunctioning lawn mowers:

The quality of the gasoline is poor;
incorrect proportion of gasoline and oil;
clogging of the fine filter;
the spark was gone.

the lawnmower will not start, the spark is gone

The loss of a spark entails checking the contacts and the correctness of the gap between them, the conducting wires to the candle and the candle itself.
The way to check the spark is to unscrew the candle, connect a wire to it, put the candle sideways to the motor casing and pull the starter several times as if starting the lawn mower, while you need to look at the coal and the contact of the candle, a spark should run between them.
If there is no spark, take a new candle, do the same procedure, if the spark cannot be traced, then there is a problem in the wire or contacts, it is better to replace them.

Diagnostics of the candle channel

Reasons why the petrol trimmer won’t start

There are various reasons why the petrol trimmer won’t start:

Lawn Mower Does Not Start After Winter
  • The most common reason for a breakdown lies in the wrong choice of fuel. Often, overly economical users of the device fill the tank with something dubious, but not fuel with a normal octane number. Low-quality fuel that has been kept in a plastic canister for a long time has a terrifying effect. The device, which has lost its functionality for this reason, is sent to a complete bulkhead of the mechanism.
  • There is another common situation where the petrol trimmer starts and stalls. The problem could be the spark plug or air filter. In the first case, after inspection, it will be found that the candle is “thrown”. This happens even if it has been recently wiped and dried. If everything is in order with the candle, then it is worth inspecting the air filter. Most often it turns out to be oiled and needs to be replaced. If the device still refuses to start, then the problem lies either in a faulty ignition coil or in a clogged muffler.
  • The device can deteriorate not only due to low-quality fuel, but also due to improper handling. For example, the fuel is checked, there is a spark, but the device will not start. The cause may be a candle filled with gasoline. To correct the situation, you just need to unscrew the candle, wipe it, dry it and check for operability.
  • Sometimes there is such a situation. the gasoline trimmer does not start when the candle is dry. Then it is necessary to lubricate the threaded connection with gasoline. It should be slightly damp, otherwise nothing will catch fire.
  • Often, the owners of the device find themselves in a situation where the gasoline trimmer does not start well when hot. Some technicians claim that the problem lies in the ignition coil. Therefore, it must be changed and the device will work. But the problem may also be overheating of the engine, especially if a reinforced circular saw-type knife was attached to the device. To avoid such situations, you should carefully study the instructions, which specifically describe what types of discs can be installed.

The reasons when a new gasoline trimmer won’t start can be the most commonplace, for example, inability to use the device. If the user stores it correctly, uses high-quality fuel and does not leave gasoline in the trimmer, then the unit will serve faithfully for a long time.

the lawn mower won’t start after winter

In such cases, the unit must be serviced. Remove the fuel system, including filters (air, fuel), disassemble the carburetor, clean and rinse each unit. Blow out the filters with air. Pay attention to fuel quality and octane number.

It should be borne in mind that products of such well-known companies as STIHL, Husgvarna and other brands will not run on cheap, low-octane gasoline.
Suitable fuel for them is from the AI ​​brand. 92 and higher from car gas stations and then from well-recommended ones, since there is also bad gasoline at gas stations. The use of high-octane and high-quality gasoline will determine how long the lawn mower will be used and how long it will last.

It is necessary to take into account one more fact that when the diluted fuel mixture is stored for a long time, its working qualities drop, which also leads to consequences in which the lawn mower does not start. Therefore, it should be diluted in portions, that is, the amount of the mixture that is produced at a time.
The operating instructions clearly describe and explain the mixing ratio of gasoline and oil. Strict observance of the correct proportions will at least save you from several questions, why the lawn mower does not start and what to do in such cases.