With 4 stroke gasoline engine- reliable, unpretentious equipment in operation. On flat areas, the advantages of such lawn mowers over lawn mowers and trimmers are immediately visible. Productivity is higher, the lawn is cut more evenly. Knowing some of the nuances in the operation and maintenance of lawn mower engines will allow you to get real pleasure from the trouble-free start and operation of this equipment. Consider the example of a Viking MB 448 lawn mower with a Briggs & Stratton 500E OHV engine (see Figure 1). A similar device and Husquaran mowers (r53sv, r152sv, lc56, lc 56b), oleo-mac. You can read more about choosing lawn mowers.

Sometimes, after checking the condition of the mower blade or cleaning the case around the blade, muffler exhaust suddenly turns black, the lawnmower starts sneeze" And stall. Check the condition of the air filter. An oily filter indicates that the mower was tilted towards the carburetor and oil from the engine crankcase got into the carburetor and onto air filter. Therefore, always when cleaning or replacing the blade, tilt the mower away from the carburetor, or towards rear wheels lawn mowers (see video).

How to properly clean a lawn mower?

For proper cleaning of branded mowers, we recommend watching the video below.

To eliminate the consequences of improperly tilting the lawnmower, first change the air filter, remove the spark plug and clean the spark plug electrodes. Intensively pump fuel into the carburetor with a primer. Try to start the engine and let it run for 5-7 minutes until the black smoke from the muffler disappears. If the engine fails to start after several attempts, go to service center for cleaning the carburetor.

A reliable and simple tool for cutting grass on a garden plot - a lawn mower, is extremely in demand. However, it may break. Repair required. As a rule, the repair of electric lawn mowers is carried out in service centers.

( ArticleToC: enabled=yes )

In order not to transport a sufficiently voluminous apparatus to the workshop, a number of malfunctions can be eliminated with your own hands.

Why won't lawn mowers start?

To answer the question, you need to understand that all breakdowns are divided into mechanical and electrical. The first ones include faults:

• knives;
• wheels;
• handles;
• corps.

To the second - everything related to the engine, whether it is electric or gasoline.

It is not difficult to repair blunt knives on your own, since they are removable and you can sharpen them with ordinary emery, maintaining a sharpening angle of 30 degrees. In case of malfunctions of other parts, i.e. body, wheels, handles, they will also need repair or replacement.

In battery devices, battery failure is added to this problem. It is more difficult to cope with the repair of a lawn mower equipped with a motor, i.e. petrol and electric lawn mowers.

In the first case to possible breakdowns the problem of overheating and overload is added, as well as malfunctions in the oil and fuel supply circuit. At electrical breakdown can also be caused by overheating or overloading, since not all models are equipped with protection.

Overheating is caused by running the unit for a long time with the air filter in poor condition, making it difficult for sufficient air to pass through.

Have to chill Electrical engine disconnect it from the power supply and replace the filter. In the future, to avoid repairs electrical apparatus, it should be cleaned at least once every three months.

Appearances extraneous noise or smell indicates that the electric lawn mower needs repair. Not everyone will do it with their own hands, because the drive will need to be replaced.

Electric lawn mower does not start or stalls

Sooner or later, many are faced with the failure of the lawn mower. This happens, as a rule, after 3-4 years of active operation or after the device has been stored in winter period in an unheated room.

The lawn mower is out of order if:

• does not start;
• lawn mower stalls shortly after starting;
• engine is not running full power or intermittently

Engine problems arise over time for all devices, regardless of whether a simple “Chinese” or an expensive “Japanese” is on it. The moment is unpleasant, but you should not be upset, just as you do not need to rush to the service center. You can try to repair it yourself.

How to identify the cause of the breakdown?

It is necessary to start repairs, guided by the principle “from simple to complex”, i.e. it is recommended to start the repair by checking the presence of gasoline in the tank. If the gasoline machine stopped starting after wintering, the fuel should be replaced.

After all, fuel, unfortunately, is not always decent quality. Therefore, during prolonged inactivity of the device, it may delaminate or form a precipitate. And engines are sometimes very sensitive to the quality of fuel.

If there is no doubt as to the latter, but the mower does not start, it is necessary to check the spark by removing the wire with the cap from the candle, unscrewing it using the key supplied in the kit.

Attach a candle to a clean metal surface (without paint) of the engine, having previously put a cap on it, and asking someone to pull the starter.

If spark of blue color did not appear, the candle needs to be replaced.

If an unstable and weak spark, the candle will need to be cleaned with a needle file or sandpaper.

They also change it if black soot is found on the surface, regardless of whether it was formed due to Low quality fuel or an incorrectly tuned carburetor.

Another problem that is easy to fix is ​​a clogged fuel hose. Check this by disconnecting it: if the fuel does not flow, then the filter or saloon is clogged. The filter will have to be replaced, the saloon can be cleaned with a needle.

Well, if after that the mower will work. However, the cause of the malfunction in 90% of cases lies elsewhere - the failure of the carburetor, which will require repair. It is possible to cope with the repair, having enough experience. In its absence, the help of a service center will be required.

How to clean a carburetor?

Start by checking for the absence open sources fire nearby. Repairs must not be carried out indoors. This is fraught with leakage of gasoline.

Use a flat screwdriver to unscrew the screws to remove from the motor plastic casing air filter. The removed filter is checked for clogging, cleaned with a vacuum cleaner or replaced with a new one (if the condition is unsatisfactory).

You also need to remove the inner filter cover, which is located under the casing. This, by unscrewing the bolts, is easier to do with a spanner wrench. On her inside an air hose is attached, which will also have to be removed.

Finally, we got to the carburetor of a device that can be dismantled. Having disconnected the fuel hose going to it from the tank, i.e. removing the clamp, turn the hose, trying to remove it from the nozzle. You need to do the job carefully. After all, if there is fuel in the tank, it will definitely spill.

The carburetor is attached to the engine with two bolts, which require a socket head to unscrew. When unscrewing the second bolt, try not to drop the carburetor so as not to damage the spring suspension.

The next step is to remove the return spring. It is more convenient to carry out the operation from the side where it is attached to the motor. Now you can remove the throttle cable by gently turning the carburetor counterclockwise.

After removing the carburetor, unscrew the bolt securing the fuel chamber cover.

Cleaning is done special liquid or WD-40 and stripped copper wire.

Finally, you can remove the plastic float under the chamber cover that regulates the level of gasoline, for which the pin is first removed.

The camera must be cleaned of plaque. The insides of the carburetor are abundantly moistened with WD-40 (or equivalent), wiped dry. After repeating the operations several times, they clean the copper core fuel channels, purge them, since their contamination is main reason on which the engine stalls or does not start.

After completing all the steps described, assemble the carburetor in the reverse order.

After installing it in place, connecting the hose, air is expelled from the fuel chamber. This completes the repair.

After the described manipulations, the equipment will start easily and work stably.

Malfunctions of electric lawn mowers

If the electric mower is silent, the cause may be a power outage and a broken cord. To check if there is current in the network, use another electrical appliance plugged in. The cord must be inspected and replaced if a break is detected. Disconnect it with a hexagon, and check for an open with a multimeter.

As is the case with petrol lawnmowers, overheating and overloading (blocking the element with a foreign object) can cause an inoperative electric motor. The troubleshooting procedure is the same as described above.

Electric Mower Fault Repair

Jamming of the knives can be caused by long grass wrapped around them. To repair, you need to disconnect the device from the network and twist the cylinder in the opposite direction.

If the electrical device is silent, it needs to be repaired drive belt breaking as a result of wear: it can be stretched or broken. This means that you can not do without replacement, for which you need to remove the protective cover.

The new belt is first installed on the small gear of the electric apparatus, then put on the large pulley, and turning it.

To replace the power cable of this electrical device, it is necessary to de-energize the device and unscrew the cover.

To disconnect the cord, insert a hex wrench into the hole with the wires, releasing the clamp.

Install the new power cord in reverse order.

The reason may also be in a faulty power switch, which is simply replaced with a new one.

Repairing an unexpectedly stopped electric motor

If the engine was running, but suddenly stalled, you need to check the crankshaft and piston - perhaps they are stuck. This happens due to the lack of oil in the crankcase. With this breakdown, it is better to contact specialists, as in the case when the lawn mower electric motor needs repair.

Video: Lawn mower repair

Preventive work

For trouble-free operation of the lawn mower, the owner must carry out its regular maintenance after the end of the working season, i.e. prior to winter storage. It will cost less than repairing or buying a new electrical device.

Among the main activities providing reliable performance electric mower, is to keep it clean. Grass that has accumulated under the deck causes erosion of the metal parts. A compressor or blower will help remove the remains of mowed weeds.

The mower's electric motor has air cooling, therefore also requires keeping clean, which is the key to efficient functioning. Suitable for cleaning the cooling fins with a soft brush and compressed air.

Timely oil changes, as indicated in the user manual, will be the key to long trouble-free operation, as well as periodic cleaning of the air filter.

With some experience, it is easy to repair lawn mowers with your own hands. The video below will help you with this.

Video: How to repair a lawn mower engine

Where can I get my lawn mower repaired?

If the owner of the electric mower does not have sufficient knowledge, service centers will help to repair your favorite equipment, which allows you to keep the area around the house in proper shape, You can find out more about them on the websites:

1. http://remontbenzogeneratora.com.ua/services/remont-kos/Remont-gazonokosilok/ (Kyiv). Repairs are carried out by highly qualified specialists, both at the location of the center and at the customer's home. Departure of the master in the city is free. They work with equipment of all manufacturers, use high-quality spare parts. And get the full range of services offered by affordable prices;
2. Even high-quality and expensive models. In order not to spend money on buying a new lawn mower, it needs periodic service maintenance, which will be carried out qualitatively by the company "Repair of Everything" ( http://remontvsego.com/teh/sad/gazon/ ). The cost of repair depends on the breakdown and ranges from 150 UAH. Departure of the master in the city is free, in the region (for a distance of up to 50 km one way) - 8 UAH per km. Replacing the motor will cost 250 UAH. ;
3. "Master Engineering" is another service center in Kyiv, where lawn mowers are repaired efficiently and quickly ( http://www.masterengine.com.ua/ru/remont.html/ ;
4. From 100 UAH prompt repairs in Kyiv in the company will cost, you can learn more about it on the website http://kiev.prom.ua/p82660097-remont-dvigatelej-briggs.html?utm_campaign=%2528portal%2529%2520%25D0%25A0%25D0%25B5%25D0%25BC%25D0%25BE%25D0%25BD%25D1 %2582%2520;
5. From 50 UAH — http://kiev.prom.ua/p239905849-remont-gazonokosilok.html ;
6. From 130 UAH. - (Kharkiv);
7. Any problem will be eliminated in Minsk by specialists of companies big list which are listed on the site http://allservice.by/companies/dacha/Remont_gazonokosilok/ .
8. They will provide qualified assistance at the address http://allservice.by/companies/service_avtomobilei/1151.html/ ;
9. Repairs can be done at affordable prices here. http://allservice.by/companies/remont_oborudovanie_intsrumenta/275.html/ ;
10. Repair in Moscow garden equipment engaged in Workshop "South-East" 9 http://remont4tehniki.ru/ ), where lawn mowers from brands such as Gardeha-Gardena, Husqvarna-Husqvarna, Viking and many others will be brought back to life. Repair times are minimal, and the cost is determined upon inspection.
11. Employees of the company "Abris" () after an accurate diagnosis will perform work of any complexity - from changing the oil to repairing the engine. Share for repair work required: for diagnostics - 1200 rubles, adjustment and cleaning of the carburetor - 770, replacement of the candle and air filter - 120 and 240 rubles, respectively; replacement of the gas and stroke cable, flywheel keys and itself - 400 rubles each. etc. http://www.remsad.ru/remont-gazonokosilok-i-benzokos/ );
12. Moscow ( http://technoded.ru/servis/remont-gazonokosilok/ );
13. More than 100 companies whose addresses can be found on this site offer their services for the repair of lawn mowers. http://prom.ua/Remont-gazonokosilok.html?no_redirect=1/ .

Video: Lawn mower repair

by the most important point when using any equipment, it is necessary to comply with the basic rules of operation and its timely service. It is this approach that will provide you with a serviceable and long-lasting. But still, sometimes unforeseen situations happen, and for some reason the device does not want to start. In our article, we will talk about possible reasons and how to fix this problem.

Faults that you can fix yourself

When your petrol lawn mower does not start First of all, you need to check the presence of fuel in the tank. If it is missing, add it to right level. Often, when the device is not used for a long time, the gasoline “runs out”, so it needs to be completely drained and filled with new one. Such a procedure must be done carefully so that fuel does not get on the engine, as this can lead to further ignition (when the engine heats up). Which gasoline is better to use, you can find out from technical passport apparatus.

In order for the unit to start, you need to pump fuel with a primer (if available in this model) into the carburetor and set maximum speed. You need to start the equipment carefully. The starter cord must be smoothly pulled out to the stop, after which one even sudden movement pull on yourself.

A malfunction may occur if the air damper is not positioned correctly during the first start. Depending on the air temperature, it closes completely or is set to the middle position (above +30 C). Then it must be fully opened.

Check the air filter if it is dirty. To do this, turn off the machine and disconnect the wire from the spark plug. Unscrew the cap and take out the filter. Rinse it with gasoline and dry it thoroughly, or simply put in a new one. Remember that it is recommended to change the air filter after every 25 hours of operation.

Another reason why a petrol lawnmower won't start could be faulty spark plug ignition. Maybe it was just filled with fuel. In this case, unscrew it, clean it and check for a spark. It may be absent when the candle is filled with fuel. Install the control handle air damper(if equipped) to the CLOSED position and start the engine. If this does not help, it is better to seek help from a specialist.

When caring for a 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 unit useful in the country needs to know the device and the principle of operation of its individual parts.

Since the gas trimmer is a complex device, you must carefully study the instruction manual before starting work. Very often it is simply ignored, or gets acquainted with it superficially. As a result, when the tool stalls or refuses to start, the question arises - “Why doesn’t the lawn mower start?” A long seasonal break in work, improper storage and untimely maintenance of the trimmer will cause a lot of trouble for the summer resident to eliminate the causes.

Where to start diagnosing motokosa

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

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

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

Checking the fuel mixture

Before starting the gasoline scythe engine, 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 piston group will cost you too much (sometimes up to 70% of the cost of a new tool). Prepare oil- fuel mixture need strictly according to the instructions. Calculate its quantity from real needs. Excess gasoline left after work loses its quality over time.

We carry out diagnostics of a candle and a candle channel

If the quality of the fuel mixture is beyond doubt, and the lawn mower stalls at start-up, then a flooded candle may be the cause. here for repairs normal fit candle key(every motorist must have) and a spare candle.

• We unscrew the candle and wipe it;
• Dry it thoroughly (do not ignite);
• Excess fuel in the chamber is drained through candle hole and dry it;
• We clean the old candle from soot with the help of a file or lady's file;
• We set the gap with a distance of 1 mm (you can check with any coin);
• We return everything to its place and try to start the trimmer.

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

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

If the trimmer engine still does not start, such a reason as the absence of a spark due to poor contact between the candles and high voltage wire. If the connection is of high quality, but there is still no spark, most likely your ignition unit has “flew”. Here it will not be possible to do without a master, because the part is not repaired, but is sold as a whole assembly.

Diagnostics of filters of lawn mowers

Another reason why a gasoline spit stalls can be an 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 and thoroughly clean the old one.

The gasoline trimmer may not start due to contamination fuel filter. This is the next step in our algorithm. Here we check the condition of the filter element and, if necessary, change it with a new one. When replacing, try not to leave the suction pipe completely without a filter, this is prohibited by any instruction manual. The rush can result in the repair of the engine piston group.

Breather and outlet

Often, “gentle” 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 assembly is clogged, a vacuum is created in the tank, preventing the supply of fuel. You can fix the problem by cleaning the breather. You can use a regular needle for cleaning.

Normal operation of braids with engines internal combustion may be impaired due to dirt entering the exhaust port or clogging of the muffler screen. There is such a problem on older models. The issue can be resolved by traditional cleaning and removal of the anti-spark grid.

More complex causes of lawn mowing failure

If step by step algorithm no troubleshooting, 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 the unstable operation of the tool. There are three main problems here:

• Clogged channels or jets. All this is cleaned with special washes or blown with a powerful jet compressed air from the compressor. Do not use needles and wire, as the flow sections 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 the pressure gauge on it with a suitable one. Follow the readings: if they do not change, everything is fine, but if the pressure starts to drop, then some part of the carburetor is faulty. We'll have to find it and replace it with a new one.

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

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 conditions storage and operation:

• during operation, carefully monitor the cooling system, carefully and timely clean the channels in the housing, as well as the starter fins;
• if necessary, use solvents, kerosene and other detergents for cleaning;
• do not clean the tool "hot" - let it cool down;
• strictly follow the requirements of the instructions regarding the mode of operation, 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 up into heavy fractions that will definitely clog the carburetor channels;
• after draining the fuel, let the trimmer run for idling, until it stalls, this will help to completely remove the remnants of the working mixture.

Before winter storage do the following steps:

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

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