DIY mowing mower repair

Service center "Servy" performs post-warranty service and repair of trimmers "Makita" - the entire range of gasoline and electric, battery, portable Makita trimmers.

• Model range of Makita trimmers accepted for repair
• Makita trimmer repair cost

We repair the following trimmer models (petrol cutter, electric cutter) Makita:

• Models of petrol trimmers and petrol cutters Makita
  • repair of the Makita EBH253U Benzotrimmer
  • repair of the Makita EBH341U Benzotrimmer
  • repair of the Makita EM2600U Benzotrimmer
  • repair of the Makita EM2500U Benzotrimmer
  • repair of the Makita EM4351UH Benzotrimmer
  • repair of the Makita EM3400U Benzotrimmer
  • Makita RBC411U Benzotrimmer repair
  • Makita DBC4510 Benzotrimmer repair
  • Makita DBC340 Benzotrimmer repair
  • Makita DBC3310 Benzotrimmer repair
  • Makita DBC4010 Benzotrimmer repair
  • Makita DBC400 Benzotrimmer repair
  • repair of the Makita RBC2500 Benzotrimmer
  • Makita DBC4510D Benzotrimmer repair
  • Models of electric trimmers and electric trimmers Makita
    • repair of Electric trimmer Makita UR3502
    • repair of Electric trimmer Makita UR3501
    • repair of Electric trimmer Makita UR3500
    • repair of Electric trimmer Makita UR3000
    • repair of Electric trimmer Makita UR2300
    • repair of Electric trimmer Makita UM4030
    • repair of Electric trimmer Makita UM3830
    • Makita cordless trimmer and braid models
      • repair of the Battery trimmer Makita DUR182LZ
      • repair of Makita Cordless Trimmer DUR361URF2
      • repair of the Battery trimmer Makita DUR361UZ
      • repair of the Battery trimmer Makita DUR364LZ
      • repair of the Makita DUR365UZ Cordless Trimmer
      • repair of the Makita DUR181Z Cordless Trimmer
      • repair of the Battery trimmer Makita DUR184LZ
      • repair of the Battery trimmer Makita DUR188LZ
      • repair of the Battery trimmer Makita DUR187LZ
      • repair of the Battery trimmer Makita BUR181Z
      • repair of the Battery trimmer Makita DUR182LRF
      • repair of the Battery trimmer Makita BC231UDZ
      • repair of the Battery trimmer Makita BC300LDZ
      • repair of the Makita DUR365UPM2 Cordless Trimmer
      • repair of the Makita Cordless Trimmer DUR364LRM2
      • repair of the Battery trimmer Makita BUR141Z
      Video (click to play).

      * If you did not find your model in the above list, do not worry, we repair almost all Makita trimmers. Just leave a request for repair on the website or call us By phone - our Servi specialists will answer any of your questions.

      The final cost of the necessary repair of Makita trimmers largely depends on the prices of spare parts and is agreed with the customer by phone, after the diagnostics carried out by the wizard.

      In our service center you can order to purchase spare parts and accessories for Makita trimmers... We work on pre-ordering spare parts. The most common items are always in our warehouse! We order unique spare parts and accessories directly from manufacturers without extra charges, the delivery time varies from 5 to 30 working days.

      The availability, completeness and cost of the necessary spare parts can be clarified without any problems by calling us by phone or by leaving a request for spare parts on the website.

      According to Servy statistics, the main faults* when working with Makita trimmers are:

      1. The Makita petrol trimmer does not start, there is no spark formation of reasons: the spark plug is faulty, the ignition coil (magneto) is faulty, the parts of the manual starter are damaged, the fuel system is clogged, the cylinder-piston group is worn out;
      2. The Makita petrol trimmer stalls, possible reasons: blockage of the fuel system (no fuel supply), wear of the cylinder-piston group, misaligned carburetor, blockage of the air filter;
      3. The cutting attachment of the Makit petrol trimmer does not rotate, the main reasons: wear of the clutch parts (cams, springs, clutch cup), wear of the drive shaft, a defective gearbox.
      1. The Makita electric trimmer does not turn on: the power button is faulty, the power cable is faulty, the graphite brushes are worn out, the engine is burnt out (either the entire stator, or the rotor separately);
      2. The Makit electric trimmer does not spin the cutting attachment, possible reasons: wear of the shaft adapter (bushing connecting the engine shaft and the trimmer shaft), the gearbox is out of order, the trimmer shaft is out of order;
      3. The engine sparks at the Makit trimmer, the main reasons: the engine completely burned out, or the stator or rotor burned out separately.

      

      These defects are typical for Makita trimmers (petrol cutters and electric cutters): some are more common, others less common. And not infrequently, they occur due to the simplest reasons: improper operation (no maintenance is carried out), the use of poor-quality gasoline mixture (oil and gasoline) or power surges and surges, many hours of uninterrupted operation of the trimmer, mowing of the grass cover that is not appropriate technical capacities of the trimmer. However, with the correct and professional approach, all breakdowns can be easily repaired by the specialists of the Servy service center in Moscow.

      Just leave a request for Makita trimmer repair on the website or call us By phone - our Servi specialists will answer any of your questions.

      • The exact timing of the repair is always indicated only after diagnosis. • The cost of Servi's services are for informational purposes only and can be changed after diagnostics of your equipment. We work with each client individually and a detailed calculation of the repair price is made in accordance with the level of complexity of a particular type of equipment breakdown. • Spare parts that we use for repair are paid separately. • Calculation based on data from the Servy customer base.

      Modern technologies and equipment make it possible to produce the best and optimal technical solutions that become effective assistants in the arrangement of a summer cottage or a personal plot. The green lawn and other plantings can grow rapidly, a petrol cutter is used to tidy up the local area and mow the lawns, which is also called a brushcutter or trimmer, a petrol mower.

      Traditional braids are inconvenient and unsafe to use, require a significant investment of time and effort, which will help save gas mowers, combining functionality and practicality in their design. In the photo of the petrol brush, you can see various high-tech devices, which are inherent in a set of operational characteristics, including such parameters as increased productivity and a long service life.

      A convenient and reliable trimmer is a technical device consisting of individual mechanisms, parts and elements that can wear out, become unusable and damaged during intensive use.

      Even with regular technical inspection, maintenance procedures and careful storage, such devices and their individual parts require repair and even replacement, all repair procedures can be performed independently.

      Brief content of the article:

      The easiest way is to give the petrol cutter for repairs, having allocated a certain amount of funds from the family budget, prompt and high-quality repair with your own hands is no less simple and convenient if you want to understand the design of the petrol cutter and fix all the problems.

      

      

      The mass and piece production of trimmers is based on the use of generally accepted technology, a typical design scheme consists of certain elements and parts, it is important to know them when carrying out independent repair work:

      • top part. The basis of the entire structure, where all important elements are collected, such as a starter, a carburetor and a petrol cutter engine;
      • middle part. A hollow rod, inside it is a cable that connects the motor and the gearbox, which drives the cutting line.In this part there are fasteners for distributing the weight of the entire structure and a belt for fixing the trimmer on the belt of a person using the trimmer for its intended purpose;
      • Bottom part. It houses the gearbox and cutting elements, which are hidden under a practical cover to protect the user. The casing provides an increased level of safety, preventing large fractions of debris, stones and glass from entering a person while working with a petrol cutter.

      

      Knowing exactly the internal structure and the principle of operation of the trimmer, you can independently carry out repair measures for the structure or replace individual components that have become unusable, using the repair instructions.

      The most common and common failures of the unit that need to be corrected on their own include the following problems:

      • engine malfunction, due to which the brushcutter does not start and does not work;
      • increased vibration of the brushcutter bar, which complicates its intended use;
      • increased overheating of the gearbox, its accelerated heating during operation;
      • slow and weak functioning of the cutting line at insufficient speed;
      • clogging of the starter grille, causing overheating of the engine and its refusal to work;
      • fast and frequent clogging of the carburetor due to the use of low-quality fuel;
      • clogging of the air filter due to non-observance of the measures for the care of the device.

      

      

      All these problems can lead to the fact that the device will lose its working capacity. Before ordering the necessary spare parts for the mowing, a visual inspection and diagnostics of the device should be carried out.

      Particular attention should be paid to individual spare parts and units of the device, to check them you do not have to contact a professional master, a set of diagnostic measures will help you to identify the consequence of a loss of performance with your own hands.

      If the trimmer motor does not start or stalls immediately after starting, when the gearbox overheats or during the operation of the device, extraneous noises are heard and vibration is clearly felt, it is important to visually inspect and identify a non-working unit.

      To optimize the preparatory measures before repairs, you should carry out a simple diagnosis and check step by step:

      • the presence of fuel in the tank and lubrication in the main units;
      • serviceability of the spark plug and its performance;
      • the cleanliness of the fuel and air filter of the brushcutter;
      • clogging of the outlet channel and breather of the device;
      • the quality of the fuels and lubricants used.

      To determine the functional efficiency of the petrol-cutter's ignition, it is necessary to determine whether the spark plug is working by testing the appearance of a spark when it comes into contact with the body of the functional device.

      The spark plug itself can be replaced with a new one, having previously dried the candle channel, if necessary, the old element is also dried, cleaned with special devices and returned to its place.

      In the process of inspecting the carburetor, it is worth paying attention to the possible leakage of the fuel used; to identify problems with the carburetor, the following measures must be taken:

      • purging the fuel hose to eliminate possible blockage of the element;
      • checking and replacing the gasket between the engine and the carburetor;
      • determination of tightness and maintenance of constant pressure in the unit.

      

      

      If necessary, you can personally disassemble and thoroughly clean the unit using gasoline, the jet and channels are cleaned using compressed air.

      

      The gearbox transmits torque from the motor shaft to the cutting tool, its gears during operation must be absolutely clean and always lubricated with special grease.

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      Carrying out a technical inspection on your own once a season will allow you to get rid of the need to repair the gearbox or replace it, with the purchase of an expensive new unit.

      

      The starter is necessary to bring the trimmer into working condition, its diagnostics consists in checking the tension of the starter cord connected to the teeth of the starter coil, which are often destroyed during an abrupt start.

      

      An inoperative starter in a petrol cutter cannot be repaired; it must be replaced with a working unit as part of a mandatory technical inspection or a set of repair measures.

      

      Cutting elements require special attention and care, which must always be cleaned of dirt and cut grass after use. Regular inspection and thorough preparation of the device for operation will help to avoid costly and time-consuming repairs, and always be confident in the performance of the petrol brush.

      An indispensable tool for a modern summer resident or owner of a private house is a petrol cutter, which allows you to effectively and efficiently put the adjacent territory in order. The period of active use of brushcutters is in late spring until October. Modern units are equipped with powerful and durable internal combustion engines, reinforced transmission and main components. Despite this, physical wear, manufacturing defects or improper operation lead to failure of the trimmer. In order to repair the trimmer with your own hands, you must have at least basic knowledge in the field of technology and little experience in repairing it.

      The main unit of any gasoline tool is the internal combustion engine (ICE), which, through various methods, transmits torque to the actuator. In a modern petrol cutter, a duralumin rod (pipe) is used as a transmission element between the engine and the trimmer head, inside which the drive shaft is located.

      Thanks to the high-revving engine, the line speed can reach 13 thousand revolutions per minute, depending on the manufacturer of the scythe. In order to exclude mechanical and thermal damage to the gearbox, a special hole is provided in its housing for the introduction of grease in the form of ointments. To make the headset easier for the owner during long-term work, all brushcutter models are equipped with a durable shoulder strap.

      Regardless of the manufacturer, almost every model comes with a line and steel knives.

      The cross-section of PVC trimmer line can vary from 1.5mm to 3.0mm.

      Made of durable polymer, it is subject to intense wear and tear during mowing. Therefore, from time to time it is necessary to check the presence of a fishing line in the head and, if necessary, replace it. It is recommended that you purchase an extra bobbin to quickly replace it with a spool with no line.

      ICE trimmers on the market today are equipped with a D-shaped, U-shaped or T-shaped handle, where the main controls of the unit are located. For example, in a braid with a U-grip, the throttle key and stop / start toggle switch are located on the right grip. In the D-shaped version of the handle, the throttle control button is located directly on the rod.

      Due to the presence of many components and parts, repairing a trimmer with your own hands means eliminating breakdowns that prevent its normal operation. It should be noted the most basic malfunctions of gasoline streamers:

      1. The trimmer motor is not picking up speed;
      2. Breakdown of the cylinder-piston group (CPG);
      3. Ignition malfunctions;
      4. There is no connection between the internal combustion engine and the trimmer head;
      5. Mechanical knocking during unit operation.
      6. Repair of the central piston group petrol cutters

      The main unit of any internal combustion engine is a cylinder-piston group (CPG), which can fail due to wear of parts of parts or poor quality of the fuel mixture.

      Lubrication of rubbing units in a petrol cutter is carried out by adding a certain proportion of oil to gasoline. This process can be disrupted due to old oil precipitating out. In this situation, when the trimmer is started, the motor overheats and in a matter of minutes the most expensive breakdown occurs. To eliminate the malfunction that has arisen, a complete replacement of the CPG will be required, namely: the piston, oil seals, cylinder and piston rings. If you are not an ICE repair technician and do not have experience working with technicians, then you will hardly be able to fix the engine without the help of a specialist. Details on the stages of piston trimmer repair can be found here.

      If the ignition of the petrol mowers fails, the spark on the candle disappears and, as a result, the fuel mixture does not ignite.

      Spit spark plug design

      In this situation, it is quite important not to rush to replace the coil, since the cause of the breakdown may be the lack of contact in the switch on the control handle.

      An important point when troubleshooting the trimmer ignition will be the section diagnostics, where the distance between the side and center electrodes should be 0.5-0.7 mm. In addition, it is necessary to pay attention to the steel O-ring on the spark plug, the loss of integrity or deformation of which can lead to etching of air from the combustion chamber and, as a result, reduce the power of the streamer.

      Ignition flywheel with coil

      If the replacement of the check of the electrical circuit, the spark plug and its contacts did not give positive results, then you should pay attention to the trimmer ignition module, namely the clearance with the flywheel. Regardless of the design features and the manufacturer of the brushcutter, the distance between the ignition coil and the flywheel should be no more and no less than 0.2 mm. To restore the optimal value of the gap, you will need to loosen the coil mounting bolts and set the trimmer ignition with a special measuring probe.

      A clear sign of a malfunction of the engine power system is the absence of traces of the fuel mixture on the spark plug electrodes, which may be associated with the following defects:

      Trimmer Fuel System Components

      • due to a clogged hole in the gas tank, a vacuum is created, which prevents the normal flow of gasoline into the carburetor;
      • due to the poor quality of the fuel and the ingress of foreign particles, the fuel filter installed in the tank is clogged;
      • non-flow of the mixture into the combustion chamber as a result of a clogged carburetor.

      You can quickly determine the cause of the malfunction by dismantling the fuel hose leading to the carburetor. If the fuel mixture flows out in a thin stream, then you should pay attention to the carburetor. If there is no jet, it is necessary to clean the breather with a thin needle (a small hole in the gas tank cap) or replace the fuel filter.

      If fuel enters the carburetor, it must be cleaned or adjusted. Adjusting the carburetor trimmer means restoring optimal fuel mix.

      Trimmer carburetor with adjustment screws

      To do this, pay attention to three adjusting screws: maximum speed (H), minimum (L) and idle speed (LA). To start the adjustment, you need to fully tighten the screws H and L and loosen one turn each. Then we start the braid and let it warm up for 10 minutes to adjust the power system in operating mode. After warming up the internal combustion engine, press the gas supply button until it stops (12,000 rpm). We restore the idling mode by unscrewing the screw LA. As soon as the trimmer head starts rotating, tighten the screw until it stops.

      One of the frequent faults of the petrol mowers is the incorrect operation of the internal combustion engine, namely the drop in power when the speed increases (the scythe stalls).

      The reason for this is that the exhaust system is clogged with burnt oil particles.Often manufacturers make mufflers prefabricated and cleaning is quite simple. If the design of the spark arrester is non-separable, then it must be placed in water with detergents, and then dried with an ordinary or industrial hair dryer. Frequent clogging of the exhaust system indicates non-observance of the proportions of oil and gasoline.

      

      At first glance, a simple device for mowing grass with a two-stroke engine is fine-tuned. Repair of petrol cutters must be entrusted to a specialist or to study the technique yourself, using the operating instructions. The streamer maintenance is essential. Gearbox lubrication, line replacement, and teeth sharpening can be done on our own.

      

      Any type of petrol cutter has a hollow rod, in which a connecting cable is placed between the engine shaft and the lower gearbox, which transfers rotation to the working body with the cutting tool. In the upper part there is a carburetor and a motor, at the bottom - a gearbox and a working tool, covered with a casing. In the middle part there is a transverse handle in which the control buttons are located. To unload the arms, there is an unloading belt that holds the bar with the operator's torso.

      When choosing a petrol cutter, a two-stroke engine is preferable to a four-stroke one. The two-stroke engine is more maneuverable and easier to repair. With a four-stroke unit, the vibration level is lower.

      They follow this, repairing petrol cutters is to troubleshoot;

      • the engine does not start;
      • the cutting mechanism is not picking up speed;
      • the engine stalls;
      • the reducer is heated;
      • an extraneous knock is heard, strong vibration of the bar.

      Before eliminating the malfunction, you need to diagnose, determine the non-working unit.

      It is important to know the lubrication points of the tool. Constant care and cleaning of the device after work will extend its service life. Before work, it is necessary to tighten the fastening bolts, prepare fuel and fill the tank.

      

      If the mechanism does not start, it stalls immediately, check sequentially:
      • is there fuel in the tank;
      • serviceability of the spark plug;
      • cleanliness of the air and fuel filter;
      • the cleanliness of the breather and exhaust port.

      It is necessary to fill it with a freshly prepared mixture based on AI-92, the oil is injected for accurate dosage with a medical syringe. This will help avoid expensive chainsaw repairs.

      It is necessary to make sure that the candle is working, it gives a spark when it comes into contact with the body. In this case, it is necessary to dry the candle channel, clean and dry the part itself. You can change the candle, but the canal still needs to be dried for 40 minutes. Check the serviceability of the high-voltage wire, there may not always be a contact. A malfunction in the ignition unit when repairing a petrol cutter cannot be eliminated with your own hands.

      If, when the air filter is removed, the engine does not stall, the reason is in it - replacement or cleaning is required. Replacing the fuel filter is done with great care. Then check the cleanliness of the breather, remove the muffler mesh and clean the exhaust channel.

      

      The next step will be to repair the carburetor, where you have to find the malfunction and fix it, taking into account the tiny size of the parts. If the simplest operations have not yielded results, in order not to disrupt the fine tuning of the system, it is better to entrust the repair to a specialist. Where to start diagnostics and how to properly repair petrol cutters with your own hands, check out the video:

      

      

      The role of the reducer is to transfer torque from the motor shaft to the cutting tool through 2 gears with different numbers of teeth. The torque is transmitted at an angle of 30. The number of revolutions of the lower cutting disc is 1.4 times less than that of the engine. Gears must be clean and lubricated. To supply oil to the teeth, there is a hole under the screw on top.

      Lubrication of the petrol cutter gearbox is carried out at least once a season. If the work is intensive or there is abnormal noise in the lower unit, it is necessary to lubricate more often.

      First, the place where the plug closes the hole should be cleared of soil and grass. Unscrew the plug with a suitable tool, it is included with the saw. We use a grease tube. Either a native lubricant from the manufacturer is selected, or well-known high-quality compounds, such as Oleo-Mas, Litol-24, Azmol 158. We open the protective layer of the tube and lay the instrument on its side. Slowly rotating the knife, squeeze the grease into the gear housing. The gears, turning, carry the composition with their teeth over the entire surface. You can also pour grease with a special syringe.

      Insufficient or too much lubrication can lead to overheating of the gear unit. An audible knock and backlash indicates a bearing failure or dirt ingress due to a damaged boot. Bearings must be replaced with a puller, without using the heating method.

      

      If the gearbox staggers and runs on the rod, it is necessary to replace the housing, or temporarily tighten the knot with a clamp to secure it to the pipe. If the knife stops rotating, it means that the gears do not engage - the teeth are worn out or crumbled. A pair will need to be replaced with a complete disassembly of the assembly.

      Disassembly of the gearbox with disassembly of the shaft and bearing assemblies must not be carried out by heating. When heated, the metal loses its strength properties and in the future the knot becomes unreliable. A puller is used to remove the bearings.

      When replacing the gearbox, it is necessary to select a new unit, guided by:

      • pipe diameter;
      • the diameter of the drive shaft;
      • section of the drive shaft;
      • method of fastening protection

      

      The saw headset dulls or wears out over time. Working with the tool becomes strenuous, the load increases, and the swath quality deteriorates. Metal saw blades are sharpened, plastic ones are changed.

      If a line is used as a cutting tool, it gradually wears out, and new material is installed in the spool. The principle of operation of the cutter with a line is to gradually unwind the coil under the influence of centrifugal force. On contact with the grass, the fishing line is abraded; it is fed from the reel gradually. A special winding is needed so that the two cutting elements come out at the same time and do not get confused with each other.

      

      The figure shows how to properly wind the line on the reel of the petrol cutter. Before winding a new line, you must:
      • unscrewing the nozzle, carefully remove the cover, holding the spring with your hand;
      • remove scraps of old fishing line from the reel;
      • measure 5 meters of a new string and fold it in half;
      • guides in the reel for 2 ends, hook the middle part into the recess and wind in the direction of the arrows for each half of the string;
      • lead the remaining 20 cm through the special notches at the opposite ends of the coil;
      • install the spring and washers, bring the ends of the line out, close the drum with a lid.

      In order to better understand how to change the line on a petrol cutter, watch the video.