No spark on petrol trimmer

Owners of summer cottages and owners of country houses cannot do without the help of various equipment. In summer and autumn, the surrounding area is saved by a trimmer - a simple technique that allows you to quickly trim the lawn, remove weeds, and get rid of small bushes. However, it often presents surprises to owners: at the most crucial moments, the lawn mower cannot gain momentum, or does not start working at all. To fix the problem as quickly as possible, owners need to find out why the trimmer does not start. First you need to figure out what can lead to such a malfunction, pinpoint its culprit, and then eliminate the obstacle that has arisen on your own.

How to check the serviceability of the magneto

The magneto is the main component in the engine ignition system and is a coil with primary and secondary windings located around a core. Often, due to a malfunction of the magneto the spark at the spark plug disappears and the fuel does not ignite. To check the coil, you will need to use a tester and follow these steps.

On the tester, having switched to resistance measurement mode, you need to set it to 200 Ohms. This method will test the primary winding.
Connect one electrode of the tester to the ground of the coil, and the second to the contact coming out of the magneto. Normally, the resistance should be from 0.4 to 2 ohms.
To check the secondary winding, you will need to set the device switch to 20 com. Next, one probe of the device is inserted into the spark plug cap, and the second is connected to ground. Normally, resistance values should be in the range of 4-6 kohms and higher (depending on the model).

If the circuit is open, the device will show infinity, and if it is closed, it will show 0 (zero).

If you do not have a tester, then you can use the following method, being very careful so that the electrode does not touch the cylinder, otherwise the coil will burn out.

Remove the cap from the candle. There is no need to remove the spark plug to maintain compression.
A nail without a head must be inserted into the cap. The nail should be of such a diameter that it fits well in the cap.
Tie the cap with a nail to the cylinder using a dielectric, so that the gap between the electrode and the cylinder body is in the range of 5.5 to 7 mm (but in no case touches ground).
Using the starter, simulate starting the engine several times. The ignition button must be turned on.
Observe whether a spark and what color it is.

Normally, the spark should be strong, white or have a bluish tint. If the spark is weak and its color is orange or yellow, this indicates a faulty magneto.

You should also take into account the fact that sometimes a magneto can produce a good spark when cold. But after heating, due to internal faults, it stops producing current. As soon as the coil cools down, the trimmer starts again and runs for a while until the magneto heats up again. This coil needs to be replaced.

Sometimes the spark plug can cause a similar heating problem even if the coil is good, so you need to check both parts.

We are trying to start the engine

So, we figured out why the spark plug on the scooter floods. The repair methods and starting methods below apply to scooters with 2T and 4T engines.

The method is suitable if there is no tool. If you flooded the spark plug while trying to start the scooter, then give it time to stand for about 5 minutes. Then turn the gas handle all the way and turn the engine with the starter for about 10 seconds. You can use the foot several times if the starter is faulty. Release the throttle and try to start the engine again - it should work.
If you have a spark plug wrench, you should unscrew the spark plug and warm it up over a fire, after cleaning it from carbon deposits. With the spark plug removed, you should “blow out” the cylinder by rotating the engine with the starter or foot. Screw in the spark plug and try to start. If unsuccessful, the spark plugs should be replaced.

Advice! Although the first method is faster, it is still recommended to use the second. This cleaning of the ignition system will help avoid such problems for some time.

After reading this article, the described problem will no longer be scary for you. Monitor the condition of the components and assemblies of your vehicle, carry out repairs on time, refuel with high-quality fuel, and your scooter will definitely be your reliable travel companion!

How does the ignition system on a trimmer work?

The ignition system of a two-stroke internal combustion engine consists of 2 elements: a flywheel and a coil (magneto). The picture below shows what they look like.

The flywheel contains an impeller that acts as a fan to cool the engine. Also on one side of the flywheel there are permanent magnets, shown with an arrow in the figure.

When the flywheel rotates, an electric current is generated in the coil, which serves to produce a spark at the spark plug. The spark appears when the magnets are directly under the magneto.

Reasons why the spark plugs on the injector or carburetor fill up

In principle, the culprit for flooding the injector spark plugs is elementary. And it lies in the specifics of the operation of the “electronic brain” of your scooter.

At subzero temperatures, mixing the air-fuel mixture requires some effort: more oxygen in cool air urgently requires more fuel. Therefore, the ECU instructs the injector nozzle to increase the fuel supply, which they do, okay.

And the following happens in the motor, especially if your scooter no longer has a new battery. The injectors supply gasoline to the combustion chamber, the starter tries to create sufficient compression in the cylinder, while at the same time trying to produce a spark to generate a flash. Do not forget about the quality of gasoline, which does not have perfect parameters.

As a result, with exemplary compression, the injector spark plugs have every chance of starting even with the smallest impulse, but only a new scooter has perfect compression. In practice, this is why, as a rule, the injector spark plugs of a new scooter do not flood.

The spark is weak, compression in cold weather does not meet the specifications, and the injectors continue to deliver fuel to the combustion chamber. Which, in turn, floods the candles and they simply stop giving symptoms of fiery life.

Why do you need ignition adjustment?

In some cases, when the engine does not start, ignition adjustment will be required. Of course, first you need to check the serviceability of the spark plug and the high-voltage cable with a cap.

It is necessary to regulate the ignition on a two-stroke engine in order to ensure timely ignition of the fuel in the combustion chamber of the engine. Below is a diagram from which you can understand the principle of operation of the internal combustion engine.

A spark in the spark plug should appear at the moment the fuel is compressed by the piston, when it just barely reaches top dead center (TDC). When the piston passes TDC, the fuel mixture ignites, causing the piston to move downward under the influence of the explosion energy.

READ Replacing Line in Champion Trimmer

Therefore, if for some reason (mostly this occurs due to the displacement of the flywheel on the shaft relative to its original position) fuel ignition occurs before the piston passes TDC, then it returns back, and the crankshaft rotates in the opposite direction. This movement may damage the starter assembly, break the starter cord, etc. In this case, early ignition of the fuel occurs.

There may also be late ignition on the trimmer : the piston, after compressing the fuel that has not ignited, goes down, and at this moment a spark . In this case, the engine either will not start or will significantly lose power and will have difficulty gaining speed.

But such problems with early or late ignition on two-stroke internal combustion engines are quite rare, since the flywheel with magnets is already installed in the correct position, which is perfectly synchronized with the movement of the piston. In addition, the flywheel is fixed to the shaft using a key and a nut. Therefore, incorrect installation of the part is excluded.

Basically, ignition adjustment consists of setting the correct gap between the magneto and the flywheel.

DIY troubleshooting

In order to repair a magneto with your own hands without involving specialists, you need to know how to disassemble it and how to change the breaker contacts with new ones.

Magneto disassembly

Disassembling the magneto is very simple. First you need to remove this device from the engine and clean it, removing oil particles and dirt. Next, since the ignition timing device is securely fastened, you need to unscrew the nut, and then remove the part and pull the key out of the groove. The cover is secured with four screws; to remove it, you need to unscrew and remove the fasteners. Then you need to pull the magneto rotor out of the housing, unscrew the pins holding the transformer, and remove it. And to assemble the magneto, you need to perform the steps described above in reverse order.

Replacing breaker contacts

After disassembling the magneto, it is necessary to remove the old breaker contacts and install new ones correctly. To do this you need:

move the latch, remove the cover from the breaker;
Unscrew the screw holding the connecting conductor;
remove the screw securing the breaker plate to the magneto cover and remove it;
remove the screw securing the breaker spring;
remove the lock washer from the axle, and then the lever with the cushion assembly that it holds;
Unscrew the screw securing the contact post and remove the part from the axle.

You need to assemble the assembly with new contacts in the reverse order.

On a note! Despite the simplicity of the operation, most often trimmer owners prefer to simply replace the magneto with a new one.

Ignition control algorithm

The ignition on the trimmer is adjusted quite simply.

Remove the casing from the engine by unscrewing all the bolts holding it in place. For example, on the Patriot PT 2540 lawn mower, to remove the casing, you will need to unscrew the air filter housing and use a flat screwdriver to remove it from the latches. After this, the plastic case can be easily removed.

Using a screwdriver, unscrew the 2 bolts (no need to completely unscrew) holding the magneto.
Turn the flywheel so that the magnets are at the top.
Next, in order to correctly set the best gap between the flywheel and the coil, you can use a regular business card or pocket calendar. If you don’t have either one or the other on hand, then to set the ignition, you can use a sheet of A4 paper, folding it 2 times (in the end, you will get 4 sheets thick). This thickness will be enough to obtain the optimal clearance and adjust the ignition. Insert a business card or paper between the spool and the magnets.
The magnetic field will attract the coil to the flywheel. Hold the magneto in this position with your fingers and tighten the bolts holding it in place.
Remove the business card. After this, the ignition on the trimmer will be adjusted.

What to do if the candles are flooded with gasoline

There are 2 options to solve the problem. As a rule, a “reasonable” operating manual says: if the injector spark plugs are filled with fuel, you need to unscrew them and dry them. With the spark plugs removed, crank the starter for 10-15 seconds. Put the spark plugs back in and start the engine.

Reliable folk method. If you have filled your spark plugs with gasoline, before unscrewing and drying them, try starting the engine using the following method: purge mode.

The gas handle is turned all the way to the floor. Use the starter to turn the engine for 10-12 seconds, then release the gas handle. The engine should start. The fact is that in this way, when you close the fuel supply, you blow air through the spark plug.

If the engine does not start, then try to dry the spark plugs. Spark plugs for an injector are no different from an engine with a carburetor. Therefore, we again use the “old” method: we unscrew the candles, clean them of carbon deposits with a brush, dry them with a hairdryer, or on a gas stove or in the oven. We control the gap and screw the spark plugs into place. The motor should start.

For used scooters, professional advice is to clean the spark plugs more often, or, more correctly, change them.

If the spark plugs continue to be constantly filled with gasoline, it is necessary to carry out diagnostics of the spark plugs for quality of spark supply, cleanliness of injectors, spark output from the ignition coil, Hall sensor.

Why does the lawn mower stall after starting?

After starting, the engine may stall if the carburetor is incorrectly configured or misadjusted. By what signs can we understand that the reason really lies in this? It’s very simple, based on the vibrations that will be clearly felt when the mower is operating. You can adjust the fuel supply yourself by following everything that is written in the operating instructions for the tool.

The engine may stall due to a clogged fuel valve. The cause can be eliminated by cleaning it. If the lawn mower starts up and then suddenly stalls, it means that the supply of fuel to the carburetor is obstructed. Loosen the carburetor valves to ensure free flow of fuel in the required quantity.

Excessive air leaks may also cause the engine to stall. Increase engine speed so that air bubbles leave the unit's fuel system faster. Also be sure to check the integrity of the fuel intake hose. If mechanical damage is detected (cracks, punctures, etc.), replace the part.

Breather and exhaust channel

Often, “delicate” branded models of lawn mowers do not start and stall due to contamination of the 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. The problem can be resolved by cleaning the breather. You can use a regular needle for cleaning.

The normal operation of scythes with internal combustion engines may be disrupted due to dirt getting into the exhaust channel or clogging of the muffler mesh. This problem occurs on older generation models. The issue can be resolved by traditional cleaning and removal of the anti-spark mesh.

Carbon accumulation in the muffler

Before resorting to more serious repair actions, you need to make sure that the exhaust channel is working properly. This section does not apply to previously unused trimmers, since they have practically no output. If the lawn mower has been in use for many years and during this time the unit has not been subjected to serious diagnostic measures, then it is imperative to check whether the muffler is clogged.

The accumulation of carbon deposits prevents exhaust gases from escaping, making it simply impossible to start the engine. Of course, the outlet channel cannot become clogged overnight, which is why such a situation must be preceded by certain signs. The release of black smoke from the muffler is a kind of soot that gradually accumulates on the walls of the exhaust system. There may be a significant increase in the sound of the installed engine, which is associated with overcoming the enormous resistance of the exhaust gases to release them. When idling, the device spontaneously stalls. In critical situations, engine performance deteriorates significantly.

If there is serious contamination on the anti-spark mesh, then the reason for the inability to start the trimmer engine may lie precisely in the exhaust channel. You need to clean the mesh as carefully as possible, since black soot is a very dangerous carcinogen for humans, which can cause damage to the respiratory tract. For cleaning, you should use specialized products that can cope with carbon deposits.

Proper care of a chainsaw

There are no unnecessary phrases in the operating instructions; everything that is offered is aimed at the smooth operation of the gasoline pump. Cleaning all parts after each work cycle makes it easier to remove unhardened residues and dirt. Clean only cooled parts. This method contributes to the quality of air cooling of the engine and gearbox.

For refueling, you must use fuel with the recommended oil in the instructions. If the fuel mixture remains in the fuel tank, the oil will float and, upon startup, land on the damper, impairing its adjustment. The mixture may settle and clog the fuel in the carburetor.

READ Is it necessary to add oil to the trimmer?

When storing equipment for the winter, inspect and lubricate the gearbox and piston system, wrap the entire saw in an oiled rag and store it in a dry place.

It is impossible, and dangerous for the tool and the health of the mower, to use a metal cable instead of a fishing line. It cuts more efficiently, but the load on the gear and motor increases. The frayed piece of wire flies at the speed of a bullet while being disconnected. Effective mowing can cause rapid wear on the engine piston. For greater mowing efficiency, it is suggested to use the “star” profile of the mowing line.

When caring for their garden, sometimes people have to deal with the fact that their lawn mower will not start. There are several reasons for the failure of this tool.

Diagnostics of lawn mower filters

Another reason why a gas scythe stalls may be the air filter. To eliminate this, 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 out and thoroughly clean the old one.

A gasoline not start due to contamination of the fuel filter. This is the next stage of 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 pipe completely without a filter; this is prohibited by any operating instructions. Haste can result in repair of the engine piston group.

Checking the fuel mixture

Let's say your trimmer won't start. In this case, the first thing you need to do is check whether there is enough fuel in the tank, and also evaluate the quality of the fuel mixture. It is necessary to refuel a motorized unit exclusively with high-quality gasoline. It is recommended to use fuel of a grade not lower than AI-95. Refilling the trimmer with fuel of unknown origin, purchased not at a gas station, is fraught with frequent malfunctions of the tool. This may cause damage to the cylinder-piston system. Repairs in this case often exceed the cost of the device itself.

Why won't my petrol trimmer start? This can also be caused by improper preparation of the fuel mixture, which consists of oil and gasoline. The proportions in which these components are combined are indicated by the manufacturers in the trimmer's instruction manual. It is highly not recommended to prepare the fuel mixture in large volumes, that is, for the future. After all, with long-term conservation, a loss of the defining properties of the substance occurs. Therefore, if the trimmer does not start, you should drain the old fuel and use a freshly prepared fuel mixture.

Where to start diagnosing a lawn mower

If the lawn mower does not start or stalls immediately 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.

There is no spark in the STIHL trimmer. The trimmer will not start. There is no spark in the trimmer. Solving the problem

These nodes are most often the source of the main problems, which can be eliminated after a thorough inspection.

Reliability of built-in filters

It is these devices that often become an obstacle that prevents the classic trimmer from starting. The filter provided by the manufacturers is responsible for high-quality cleaning of the air entering the carburetor. A clogged cleaning unit can lead to the fact that oxygen enters the internal compartment of the unit in smaller quantities or its supply stops altogether. You can determine if the air filter is faulty in a fairly simple and accessible way:

Dismantle the device and carefully inspect it.
If no blockages are detected with the naked eye, then try starting the lawn mower without a filter. This part needs to be replaced only if the trimmer starts up successfully.
You can use a stream of compressed air to clean the air filter. But if the cleaning device has been in use for a long time, then it is more advisable to replace it.

It is worth noting that trimmers do not start due to a clogged air filter in the rarest cases. Most often, this device affects the stability of the engine. A more real reason lies in a clogged fuel filter. This unit is located in the unit tank. If the trimmer has been used for more than two years, then it is imperative to check the filter, which may impede the flow of fuel to the carburetor.

If the user is sure that the main problem lies in the fuel cleaning element, then the following steps must be performed:

Carefully remove the filter.
Try to start the lawn mower.

If the device starts up quickly enough, then the problem lies in the fuel filter.

The service life of this unit can be significantly reduced by long-term storage of fuel in the tool’s engaged tank, as well as by accidental entry of small debris and dust into the trimmer’s tank. But if the filter is working properly and the lawn mower still won’t start, then you need to check the fuel hose. Situations often occur when the hose together with the filter are disconnected from the main pipe, which inevitably leads to the inability to start the engine.

Ignition system

First, you need to unscrew the spark plug and look for a spark. The spark plug is inserted into the cap and placed with its skirt against the metal of the motor. If there is no spark when cranking, then first you need to try changing the spark plug.

If replacing the spark plug does not help, then you should inspect the wire and switch. Breakdowns, short circuits, jammed buttons - the whole spectrum leads to loss of spark. If all this does not give anything away, then you need to look at the sparking system itself.

Practical advice for eliminating defects. From personal experience. Recommended viewing:.

The spark in the ignition system of the lawn mower comes out in the most ordinary and moronic way. No relays, distributors, electrical units for you. An ordinary magneto with a high-voltage wire. The unit is completely changed; in the process of choosing a coil on Chinese lawn mowers, there is an option to borrow a unit from chainsaws, mixers, haymowers and other generators. However, do not forget that some products are true to size; unfortunately, not all of them are defective.

We diagnose the spark plug and spark plug channel

If the quality of the fuel mixture is not in doubt, and the lawn mower stalls when starting, then the cause may be a flooded spark plug. Here, a regular spark plug wrench (surely every motorist has one) and a spare spark plug are suitable for repairs.

We unscrew the candle and wipe it;
Dry it thoroughly (do not heat 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 nail file;
We set the gap with a distance of 1 mm (you can check it with any coin);
We return everything to its place and try to start the trimmer.

You need to dry the canal for at least 30–40 minutes. Otherwise, there is a risk of re-filling a new spark plug.

If the spark plug 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 moist. No matter how wonderful a spark a candle produces, there is simply nothing to light up in a dry chamber.

If the trimmer engine still does not start, a reason such as lack of spark due to poor contact between the spark plugs and the high-voltage wire should be excluded. If the connection is good, but there is still no spark, most likely your ignition unit has failed. Here you won’t be able to do without a specialist, since the part is not repaired, but sold as a single unit.

Prevention of the problem

Often, breakdowns of ignition coils are associated with a short circuit or break in the windings and mechanical damage to the magneto housing. This occurs due to severe impacts, liquid ingress and oxidation, and overheating. If you avoid such incidents, you don’t have to worry about the integrity of the ignition coil.

Important! To prevent regular failure of spark plugs - one of the most important components of the ignition system - you need to refuel with high-quality fuel. Bad fuel ruins these parts.

One of the magneto components that regularly suffers during use is the high-voltage wires through which current from the ignition module is supplied to the spark plugs. They have a long service life, but damage is caused to them by users themselves through careless handling when replacing spark plugs, carelessly pulling on the wire itself and not on the tip. Another problem that can happen to them is moisture ingress and oxidation or damage to the insulation. If you carefully remove the spark plug and avoid liquid entering the device, these problems can be avoided.

So, repairing the ignition coil is not very difficult and can be carried out by the user independently, but subject to the above procedure for disassembling and replacing the magneto or breaker contacts.

The owner of a summer cottage cannot do without a lawn mower or a trimmer. However, during its operation, there are variations in situations where this unit for some reason stops starting. And you will like the circumstances of this a lot more. Let's find out why a gasoline trimmer won't start.

To find out why a gasoline trimmer starts up poorly or constantly stalls, you need to check the operation of all the main components of the unit one by one. It is especially important to do this after storing the lawn mower for a long time. What is needed, the main prerequisites for such behavior of the trimmer are as follows:

The culprit that the lawn mower does not start may be a bad oil-gasoline fuel mixture. It must be prepared strictly according to the instructions. Saving here is completely inappropriate, as it leads to wear and tear of the entire piston group of the trimmer. You should not prepare a lot of fuel mixture, because excess gasoline will lose its properties over time.
You need to know that gasoline trimmers of brands such as Stihl, Husgvarna and some others will not start if cheap gasoline with a low octane number is filled in. For such units, only high-quality high-octane fuel should be used.
If the trimmer stalls immediately upon startup, then, you know, its spark plug is flooded. In this case, you need to turn it out and dry it well for half an hour. Then drain the excess fuel that is in the chamber, clean the spark plug from carbon deposits, place it at its destination and try to start the lawn mower.
If your new gas trimmer won't start, you may be more concerned with the lack of spark. And this happens because the socket where the candle is located is dry and combustible does not ignite. You should slightly moisten the threaded connection of the spark plug with a few drops of gasoline.
A gasoline trimmer may stall due to clogged air or fuel filters. It is much better to replace such elements with new ones.
The exhaust channel and breather can also become clogged. By cleaning these trimmer elements, you can start the unit without any special problems.
Another reason why the gasoline trimmer does not start, even when there is a spark, and the carburetor may be clogged. To clean the channels and jets, you need to blow them with compressed air using a compressor.

Weak spark!? The engine won't start. Question for ELECTRICIANS. (Discussion)

Use a special wash to clean the carburetor.

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Immediately after purchasing a weed trimmer, we are faced with a lot of questions - how to use it correctly, how to refuel it (if we are talking about a gasoline tool), it is clear which fishing line is much better to choose. You can find the answer to the last question in the text of the article.

How to quickly remove a stump without uprooting it?

Probably at some point gardeners are faced with the need to cut down trees growing in this area. Then the stumps remain; if the trees were of significant size, uprooting them is very problematic. The text of the article tells about other methods of getting rid of stumps.

Treatment of currants in the fall from pests and diseases

Every summer resident grows currants, which are loved because of their own taste properties and required parameters. She asks for appropriate care, which includes treating plants from pests and diseases. The features of these autumn events are described in the text of the article.

How to choose a gasoline weed trimmer?

A beautiful well-groomed lawn is a decoration for any area. And constant haircut helps maintain its attractiveness. You can't do this without a lawn mower or trimmer. Based on the text of the article, we will talk about the intricacies of choosing a gasoline trimmer.

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Some gardening tools are useful and effective, but there are times when the equipment refuses to work. Among them was a trimmer, which can be used to mow both a small clearing and large lawns.

There are various reasons why a gasoline trimmer does not start:

The most common cause of breakdown lies in the wrong choice of fuel. Often, very economical users of the device fill the tank with something incomprehensible, but in no way flammable with a regular octane rating. Bad fuel, kept in a plastic canister for a long time, has a terrifying effect. The device, which has therefore lost its functionality, is sent for a complete overhaul of the mechanism.

Why does the gasoline trimmer not start?

The reasons why a gasoline trimmer stopped starting may be different, so it is necessary to carry out a step-by-step diagnosis of the device.

Insufficient compression

If the compression is insufficient, then in most cases it will not be possible to start the engine. To check the compression, you can use a car compression gauge.

Unscrew the spark plug from the internal combustion engine cylinder.
Screw the compression gauge in its place.
Start pulling the starter cord as you would when starting a lawn mower. Do this until the needle on the measuring device stops moving upward. This value will show the compression strength of this engine.

What compression should it be? Normally, compression should be no lower than 8 kg/cm 2. Although even at 8 kg/cm 2 some engines do not idle and stall because fuel is not pumped sufficiently. If your lawn mower does not pump above 8 kg/cm2, then you will have to check the cylinder, piston and rings.

Also, poor compression may be due to a loose carburetor. Check if it is wobbly. If so, tighten the fasteners holding it in place well. Also, if the carburetor is not screwed on properly, you may notice that gasoline drips during operation.

Breather

The breather is a check valve that is designed to equalize the pressure in the gas tank. If it is clogged and does not allow air to pass towards the tank, then a vacuum forms inside the fuel container and fuel stops flowing into the carburetor. To check the serviceability of the valve, remove the hose that goes from the reservoir to the carburetor. If gasoline does not flow out of the tank, it means the breather is clogged.

Trimmer users often wonder: where is the breather? This valve is usually located in the gas tank cap and looks like the following figure.

Cleaning the breather is very simple: disassemble the valve and wash all its components. In some lawn mowers, this valve may be located directly on the fuel tank. It will not be possible to find it right away, since it is hidden from view under the starter housing. This breather can be cleaned using a regular needle.

Fuel filter

This filter cleans the fuel from possible contaminants. If it is clogged, then gasoline does not enter the cylinder, and, accordingly, the unit does not work or stalls after starting. The fuel filter is located at the end of the intake hose that is located inside the fuel tank. To get to the filter, you need to remove the plug with the tubes coming out of it.

When removing the plug, the intake hose may become detached and remain in the tank. It is removed using tweezers.

Next, remove the old fuel filter from the hose and put a new one, purchased in advance, on it. You can also clean the fuel filter if you don't have a new one. The filter must be secured to the hose using a spring clamp.

Install the intake tube onto the plug and insert the latter into the tank.

It should be noted that in some trimmer models the intake hose is not located on the plug, but inside the tank. You can remove it using tweezers or a hook bent from wire.

Malfunctions of electric trimmers

Since the design of an electric mower is much simpler than a motor trimmer, there are few reasons for its failure.

It should be noted that it is better to entrust the elimination of some of them to a specialist.

Basically, the trimmer stops working normally in the following cases:

electrical cable fault;
control button is faulty;
burnt out motor stator winding;
broken contact connections on the engine.

Large range of petrol tools and accessories at affordable prices

The Kosi Kosa store's assortment includes a huge selection of specialized products designed to perform work or support important functions of work tools. So, depending on the buyer’s requests, the online catalog offers a choice of:

Tools:
gasoline saws with a choice of power and cutting parameters.
Spare parts:
high-quality spare parts for lawn mowers;
spare parts for electric saws and other assortment.
Accessories:
original candles;
guide bar for a chainsaw of the required length;
knives for lawn mowers;
chain files;
lubricants for brush cutters and saw oil of the required consistency, depending on the units of use.

If you need to buy gas-powered tools online, each spare part is provided with a link to the consumer basket, which greatly simplifies the ordering process. Phone numbers of a manager are also available, who can answer questions, tell you what spare parts are in stock now, how quickly collection and delivery to the buyer is carried out, and will also help you select the necessary elements and order them in the right quantity. “Mow Scythe” is a modern online store where any buyer can buy spare parts for a chainsaw or lawn mower at an affordable price.

Causes of breakdowns of gasoline and electric trimmers

A trimmer, both electric and with an internal combustion engine (ICE), is an indispensable tool in the summer and autumn for owners of dachas and private houses. With its help, weeds, small bushes are easily removed and the lawn is trimmed. But, like any equipment, trimmers fail at the most inopportune moment. To troubleshoot problems with your own hands, the user of this equipment first needs to determine the cause of their occurrence.

No spark, ignition setting on trimmer

Sources:

https://armatool.ru/trimmer-benzinovyj-ne-zavoditsa-vsevozmoznye-priciny/ https://tehnika.expert/dlya-sada/trimmer/neispravnosti-ustranenie.html

Chinese gas scythes, test drive, repair and operation

Guys, good day everyone, I have a problem, I hope you can help. In general, the Chinese scythe mowed, mowed, after 3 days I tried to start it wouldn’t start, I put some gas in the spark plug hole, it seemed to start, then it stalled. After that it won't start. I disassembled the carburetor, cleaned it, thought about it with a compressor, removed the plug, unscrewed the needle, it still won’t start. The spark plug is fine, there is a spark, I change the gap and it still won’t start. I changed the rings last year, I think I applied sealant, there shouldn’t be any air leaks anywhere. In the carb, the needle is turned here and there with no effect. Never gave it 100% gas. I tried it with a filter without a filter. Opened the shutter, closed the effect 0. For some reason the spark plug is flooded, I dry the spark plug, start it for half a second and it stalls. Regarding the mixture, the question is, if you unscrew it, it will be richer, and if you tighten the bolt, it will be leaner? Will this affect engine starting? I did not pour oil into the cylinders, I did not check the compression in this way. In short, I don’t know what to do. I hope for your advice, thank you.

Little tricks

If you cannot tighten/loosen the adjusting screws properly, the problem may be that the spring is too thick and stiff. Then you can choose a more suitable one instead. If your unit does not require pure gasoline, but a mixture of it with engine oil, strictly follow the proportions specified in the operating instructions. There is one little thing: the recommended ratio is 1:25 (for all brands of oil) or 1:50 (for “native” oils). Try the first ratio first. If with this recipe oil streaks appear on the engine and heavy carbon deposits form on the spark plug, reduce the oil content by half. This usually helps the marks disappear and reduces the amount of carbon deposits. To clean the spark plug electrodes from combustion products, you can use fine-grained sandpaper.

First wipe them with a dry cloth and then carefully sand them with sandpaper. If the space between the device body and the insulator is also clogged, a regular straightened paper clip will help clear it. To do this, soak the candle in diesel fuel for a short time, and then scrape off the dirt.

If the blockage is small, one procedure is enough. In case of severe contamination, it is sometimes necessary to repeat it several times. After complete cleaning, the candle must be wiped dry to remove any remaining diesel fuel, and then can be used for its intended purpose. Please note that a foreign-made brush cutter (gasoline, electric or battery) requires a little more care than domestic ones. In particular, many strongly recommend entrusting the adjustment of the carburetor of a two-stroke engine to professionals, especially if your purchase has not expired under the warranty period. And finally, one more piece of advice: follow all manufacturer’s recommendations for operating and maintaining the device. This way you will prolong its trouble-free operation.

To do this, soak the candle in diesel fuel for a short time, and then scrape off the dirt. If the blockage is small, one procedure is enough. In case of severe contamination, it is sometimes necessary to repeat it several times. After complete cleaning, the candle must be wiped dry to remove any remaining diesel fuel, and then can be used for its intended purpose. Please note that a foreign-made brush cutter (gasoline, electric or battery) requires a little more care than domestic ones. In particular, many strongly recommend entrusting the adjustment of the carburetor of a two-stroke engine to professionals, especially if your purchase has not expired under the warranty period. And finally, one more piece of advice: follow all manufacturer’s recommendations for operating and maintaining the device. This way you will prolong its trouble-free operation.

You will learn further about what to do if the gasoline trimmer does not gain momentum.

Cleaning the elements correctly

Every owner of motorcycle and automobile equipment should know how to properly clean spark plugs from carbon deposits. Most beginners try to restore parts themselves and then wonder why they don't work.

A better effect can be achieved if you use a sandblaster. If there is none, you can try cleaning with just sand. To do this, you should purchase an electric drill and sand in a bucket. Next, take the candle and clamp it in the drill chuck by the thread on the top. Large threads are wrapped with tape. The part is then lowered into the bucket and the tool is started. After some time, the electrodes and insulator will be cleaned. If the spark is lost for this reason, the scooter spark plug will work properly again.