How to disassemble the chain power saw Makita. Makita electrical electric screwdriver device

CHAMPION electric saws. Lineup, maintenance, malfunctions and ways to eliminate them

An electric saw is a tool that allows you to carry out a quick and high.quality cut of various materials. Unlike chainsaws, electric saws do not need refueling fuel, but work from a standard electric network. Electric saws during operation do not form exhaust gases, which makes the tool absolutely safe for the user, revealing wide opportunities for use of indoors.

Another serious advantage of the electric saw, in comparison with the gasoline analogue, is stable operation at low (negative) temperatures. This advantage is fundamental for many regions with a harsh climate. The disadvantage of the electric saw is dependent on the power source.

Depending on the specifics of the tasks to be solved, you can choose the saw:

• disk;
• tape;
• mounting;
• desktop;
• cutting;
• saber;
• end;
• chain electric;
• Circular.

Each of these types of saws has its own capabilities and restrictions, no less choice is determined by the material and mode of using the electric saw (professional or household). Disk (circular saws) is high performance, the ability to adjust the speeds, the presence of an anti.vibration device, dust gathering, overheating protection systems, a laser cutting function, etc. Structurally, the disk saw consists of a case with an electric motor and a cutting element. a saw disk. By the method of sawing the model of disk electric saws, you can divide into those that move into the drain plane and those that remain motionless during sawing. In the latter case, the processed material itself moves.

Regardless of the type of electric saw, the most important criteria for choice remain unchanged. These include:

• engine power;
• the presence of a smooth launch regime;
• the level of thermal protection;
• the presence of a chain brake;
• Battery capacity;
• The price of the model.

When choosing a model of a modern electric saw, pay special attention to the presence of a function of protection against a “reverse” blow that allows you to instantly block a chain, thereby significantly increasing the safety of work.

Signs of a malfunction of electric saws

But, like any technique, electric saws are not eternal and it occurs fail. Despite the large assortment of varieties of electric saws, the types of malfunctions are the same.

The main signs of sawing saw from the working condition:

• A complete refusal of a saw from work;
• When working, the smell of burning or smoke from the saw case appears;
• Not quite high speeds of saw for work;
• Too long noise when working, similar to plentiful cracking;
• The saw will not turn off the toggle switch.

When such malfunctions appear, the tool must be repaired.

How to install a circuit on a power plant correctly

The procedure for installing a new chain has some features, depending on the type of tension on a particular tool.

On the tools with lateral tension, you need to act in this way:

• Let go of the brake. This is achieved by pulling the protective bar to the click on itself.
• Weaken the stretch. To do this, the screwdriver needs to turn the tension screw, after which the clamping nut begins to rotate freely.
• Raise the lid under which the saw elements are located. To remove the chain, it needs to be removed from the guide stars (at the same time the guide tire is dismantled). If this fails, you need to relax the tension screw even more.
• It is more convenient to start installing a new component from the top of the tire. It is worn over the asterisk, after which the tire can be inserted back, focusing on the guides.
• A tension screw is used to tighten the chain: it should sag slightly.
• The final clamping of the nuts is carried out after installation in place of the protective cover.

Important!This type of adjustment is equipped with inexpensive models as the Elitech chain 2000 C40 or Stihl MSE 220 C. Despite some complexity of the replacement, these systems are famous for more reliability, compared to fast.packed cartridges.The sequence of installation of a new circuit on tools with “quick tension”:

• First of all, you need to remove the saw from the brake.
• Open the handle of the nut until it is stalled.
• The purpose of the lamb nut in such structures is not only fixation of the shield, but also the clamping of the guide tire. You need to rotate the nut counterclockwise.
• Having removed the protective case from the asterisk, you need to shift the tire in the opposite direction. This will allow dismantling the old chain. The driven star is released from her first.
• When refueling a new product, they also start with a star. At this stage, it is important to deal with the direction of installation: in the lower part of the tire of its cutting edge should “look” into the tool body.
• The tension is set by adjusting the guide.
• After installing the sprocket cover, the mounting nut must be twisted, but do not pinch.
• The lamb nuts are screwed manually at the very end of the procedure, following the stretch wheel.

Diagnostic and repair algorithm

When starting the repair of a chain electric saw, it is necessary to conduct a sequential diagnosis of all unit nodes to clarify the cause of the breakdown. Repair of the unit is carried out based on signs of malfunctions that were listed above. Below is a power supply circuit, which depicts the internal device of the unit in detail.

Electric saw does not turn on

If when the start button is pressed, the unit does not turn on, then the diagnosis is carried out in the following order.

• Check the voltage in the outlet. It may not be due to the general shutdown or malfunction of the outlet. Try to include the unit in another place.
• If there is a voltage in the outlet, then it is worth checking the network cable. Remove the engine cover cover and call each wire with a tester, touching one probe to contact inside the unit, and the other to one of the rods of an electric fork.
• If everything is in order with the wire, then continue to check on. Call the wire tester going to the launch button for a cliff.
• Next, you should call the contacts of the buttons at the input and on its output when the key is pressed.
• After that, check the conductors going to the unit engine. If a smooth start module is in their way, then check the chain at the entrance and exit from it.

If the previous actions did not allow to identify the cause of the engine failure, then the brushes should be removed and checked. There are cases that the engine does not start due to the complete wear of one or both brushes, as well as due to a break in the conductors in them. If the brushes are serviceable, then most likely, the engine failed, namely, the pavers of the stator or rotor are burned out. In this case, in order to call the coils, you must have some skills and knowledge in this area. It is better to attribute the engine of the electric saw to a specialist who will find a malfunction and rewind the coils.

Brushes and collector burn

The appearance of severe sparking under the brushes can be caused by poor contact between the anchor lamels and electrodes due to the wear of the latter. To check this, it is necessary to extract details from the brush holders.

It is believed that the normal wear of the brushes should be no more than 2/3 of their initial length.

If the brushes are worn out, they must be replaced. Brushes can also spark due to clogging the gap between the lamellas of the anchor of graphite dust. Since graphite is a conductor, it causes a closure and appearance of sparks.

To eliminate pollution, it is necessary to clean the lamellas with alcohol, cotton and toothbrush well. It is also recommended to polish them with the smallest sandpaper (zero).

No lubrication on the chain and tire

The lack of lubrication on the tire or its complete absence can be caused by clogging of the hole or tube through which the oil is supplied to the tire. Often the chain is not lubricated if the supply of lubrication from the tank is disturbed. This can happen when clogging the filter installed at the end of the hose. The latter is always inside the container. To eliminate the malfunction, it is necessary to pull the hose from the oil tank and rinse the filter with gasoline.

The breakdown of the oil pump can also cause the oil does not enter the electric saw chain. After cleaning the filter, hose and holes for supplying lubrication, turn on the electric saw and observe whether the lubricant comes to the tire, provided that there is enough oil in the tank. If the lubricant does not arrive, it is necessary to remove and disassemble the oil pump, check the serviceability of the spring or its other parts (depends on the model of the unit) and, if necessary, replace it with a new.

Read also: How to store a pear conference

The engine gets very hot

The reason for overheating of the engine may be the jamming of the gear of the gearbox if it is highly contaminated with small wood sawdust, or extraneous objects, for example, fragments of spring or plastic parts, have fallen on it. Try to scroll the gear shaft manually when the brake is turned off. If the rotation is difficult, then you will need to disassemble the gearbox and eliminate the malfunction.

Causing an overheating of the motor can also break off the engine windings. In this case, it will not work to repair the motor with your own hands. You will need to contact a specialist for help.

Also, the engine can overheat if the oil is not supplied to the saw chain. This leads to poor gluing equipment on the tire, and as a result, to an increased load on the electric motor. How to diagnose and eliminate this malfunction, it was described above.

The engine does not develop full power

First of all, it is necessary to check the voltage in the network. It can sometimes decrease and lead to a fall in the power of the unit. Also, the drop in power is caused by jaming the gearbox or wear of the brushes. How to eliminate these problems, it was considered above.

Causes similar symptoms and faulty start button. If a fault is detected when checking this part, then it will not work to repair it. The button must be replaced with a new. But if the audit of the above reasons did not give results, then it remains to suspect that the anchor was blocked or an interval circuit occurred in them.

The unit stops during operation

If the unit stops when working, then perhaps there was a complete wear of one or both brushes. This is checked quite simply: remove the brushes from the holders and check their length.

Sometimes brushes with a short conductor, located inside the clamping spring, come across. In appearance, such a brush will have a sufficient length of the electrode, but if you look closely at the spring, it will not be unclenched completely due to the short conductor.

Also, the unit can stop in the process of work if there are malfunctions in the gearbox. In this case, you will hear the buzz of the engine, which will not be able to rotate. Often the stop of the unit causes jamming of the end star located at the end of the tire, due to its clogging. The main task of the star is the movement of the chain around the top of the tire. As in the case of a breakdown of the gearbox, you will hear the engine buzz. You can check the jamming of the asterisk if, if the unit is turned off and the brake is squeezed out, try to hand out the chain manually: if it does not move, it means that it was jammed in the tire.

How to pull the circuit on the electric saw Makita

Installation of the tire on the electric saw on one end of the tire canvas there is a slot and two holes on the sides of it. When installing the tire with a slot, it is put on a special stud on the housing of the electric saw, and one of the holes on the pin of the tension mechanism.

The second hole on the canvas serves to transfer lubrication from the oil channel to the groove of the tire.

Installation of the chain circuit is pulled onto the leading star located on the saw case, and on the star at the end of the tire. When installing the chain, it is necessary to take into account the correct direction of its rotation, which is usually indicated on the product itself.

After installing the chain, the leading sprocket of the saw is covered with a casing, the clamping nut of which at the same time is twisted not to stop so that the tire is not fully clamped.

The circuit tension of the chain tension on Chinese electric saws is carried out using a special stretch screw, the head of which has a slalit under the screwdriver. It is located from the end of the device case. For a stronger tension of the chain, it is rotated clockwise.

The tension screw is rotated until the sagging of the chain disappears. After that, it is manually scrolling on the tire towards the housing of the electric saw. This is necessary in order to “straighten out” the teeth of the chain in the groove of the tire.

If the chain weakened after scrolling, then it is pulled again.After that, the tire is taken for its free end, lift it up to the stop and in this position is again eliminated by sagging chains.

At the last stage, the clamping nut is completely twisted on the casing closing the leading star of the saw. The tire is kept in a “raised” position.A properly stretched circuit should be freely removed with the hands of the tire grooves from two sides by about 3-4 mm, and when lowering, go back to the grooves.

Checking the tension after work. To this end, it is made by several trial cuts.

Often, after trial cuts, the circuit on the busbar tire weakens. This happens when its links were polluted, and during operation, these contaminants dissolved the grease.

If this happens, then the chain must be tightened again, after a little weakening a little pressure on the casing and raising the free end of the tire up. Electric saw, of course, before that you need to turn off the network.

At the end of adjustment of the tension of the chain, they always check whether it goes in the right direction without tension, whether it is pulled. To this end, it will be unlocked by pressing the start button and pushed the teeth forward with a screwdriver. If it moves a little by inertia, then everything is fine.

And the last. It is strictly impossible to adjust the tension of the saw chain heated or unexpected, otherwise there is a risk of its gap in subsequent work.

A complete video version of recommendations for pulling the saw chain on benzo and electric saw.

Mobile device for cutting wood is an indispensable attribute of almost any summer cottage or private house. Electric saws that make it possible to work both on the street and indoors are particularly popular in this regard. In order for the tool to work efficiently and properly, from time to time it will need to be pulled out or changing its chain.

Complete check

Usually the saw chain is changed in case of its extreme wear, when sharpening or repair is already useless.

Going to the store for a new component part, it is necessary to arm yourself with the following recommendations:

• Changing any part of the electric saw, it is advisable to buy a product of the same manufacturer as the tool itself. This guarantees the greatest compliance.
• It is important to take into account the type of tasks to solve. For significant loads, chains with 3/8 inch steps are designed. If the saw is rarely used, 0.325 inches will be enough.
• The angle of sharpening of the teeth is of great importance: the cut of large volumes of dry wood is more convenient to carry out cutting edges with a sharpening angle of 30 degrees. To work with raw or freezing material, sharpening of 10 degrees is more suitable. The same applies to longitudinal sawing. a small angle of sharpening in such cases significantly reduces the degree of wear of the cutting device.
• When choosing a chain length, you need to focus on the dimensions of the tire.

How to install a circuit on a power plant correctly

The procedure for installing a new chain has some features, depending on the type of tension on a particular tool.

On the tools with lateral tension, you need to act in this way:

• Let go of the brake. This is achieved by pulling the protective bar to the click on itself.
• Weaken the stretch. To do this, the screwdriver needs to turn the tension screw, after which the clamping nut begins to rotate freely.
• Raise the lid under which the saw elements are located. To remove the chain, it needs to be removed from the guide stars (at the same time the guide tire is dismantled). If this fails, you need to relax the tension screw even more.
• It is more convenient to start installing a new component from the top of the tire. It is worn over the asterisk, after which the tire can be inserted back, focusing on the guides.
• A tension screw is used to tighten the chain: it should sag slightly.
• The final clamping of the nuts is carried out after installation in place of the protective cover.

Repair of chain electric saws with your own hands

Universal saw Electric Makita UC 3530 A is useful on a personal, garden or construction site. This model is characterized by high performance, reliability and durability, and in addition to everything is very comfortable in work. Electric saw is equipped with a high.speed circuit tensioning device and removing the tire without the use of keys, which not only allows you to increase productivity in operation, but also eliminates the need to constantly worn with additional keys.

Makita UC 3530 A electric saw control is carried out through convenient and understandable buttons and levers. Thanks to constructive features, this model is easy to maintain. The use of sealed ball bearings and a special reducer lubrication system provide prolonged operation of the electric saw without specialized maintenance.

In order to increase the safety of the saw, the developers provided in this model the inertial brake of the chain that protects the user from random injuries as a result of the “reverse blow”. This system provides a stop in a split second. even before the “discarded” tool can “overtake” the user and cause injury. To protect the network from overloads and to prevent premature wear of the mechanism in the makita UC3530A saw, there is a built.in electronic system of restriction of the starting current.

Dawed electric Makita UC 3530 A is equipped with a powerful engine with a longitudinal location, providing a high sawing speed of 13.3m/s. Due to the longitudinal location of the motor, the tool is compact and perfectly balanced. Convenient rubberized handles provide maximum control over the saw during operation. The saw is equipped with an automatic lubrication system of the chain (the container of the built.in tank for oil is 0.14 liters.) extending the life of the saw headset and the tool in general. Visual control above the level of lubricant is carried out through a transparent observation window.

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The design of the chainsaw

All chainsaws have the same design, regardless of which device, domestic (Urals, cedar, Patriot 3816, Carver. production with Chinese partners) or foreign (Stihl, Husqvarna), for example, repair of the Patriot 3816 benzoPy will be the same, with your own hands. Like the repair of a foreign device. The main components of the tool:

The general principle of operation of the chainsaw is simple. the master abruptly pulls by the cord, which starts the engine, and he, in turn, is the saw canvas. Sometimes, in the operation of the device, failures arise to eliminate them, you will have to dismantle the saw. Problems that may arise with a chainsaw:

The main problems that arise are associated with engine malfunctions (fuel supply, exhaust system, cylinder-piston system and ignition), or smaller problems (problems with a chain, lubricant, tire, seal)

It is important to consider each problem in more detail

If the chain simply ended, then it should be replaced with a new. Problems with the solution of this problem should not arise. Repair of other parts of the saw can occupy up to several hours.

No matter how trite it sounds, if the chainsaw is not started, then you need to check the tank for gasoline. If there is fuel in the system, then perhaps a saopun is clogged, leveling pressure when fuel supply. Sapun can be cleaned with acute awl or needle. Candles turn out with candle key and cleaned with sandpaper. You can also damage the combustion chamber. After these procedures, the saw should start.

If the saw turns off automatically, then, most likely, the trigger mechanism is faulty. But sometimes it happens that it is not about it. In this case, you need to turn out the candles and carefully inspect them. If traces of fuel are visible to them, then it means that the carburetor is incorrectly adjusted. The candle must be cleaned and placed back, after blocking the fuel supply.

If black soot is visible on the candles, then the case may be in low.quality oil, a poorly established carburetor and an incorrectly calculated ratio of oil and gasoline. In this case, you also need to clean the candle and place it back.

It is also important to check the device for a spark. This is easy to check: you need to connect the candle to the ignition cable, using the pliers, connect the cylinder and a candle nut and then observe the presence of a spark

If it is not, the candle needs to be changed. If when changing the candle it turned out that the other does not give out sparks, then the problem may consist in non.working contact with a candle or high.voltage wire.

What is required for repairing non.handing with your own hands

For successful and long.term operation of any equipment, it is necessary to understand the device of the main nodes and mechanisms. And also know the rules of operation.

It is not recommended to start repairs without getting acquainted with the technical side of the case, since this can only aggravate the problems and lead, in the future, to even greater problems.

If the reader is familiar with the device of the chainsaw, he can safely skip this section and proceed immediately to the next, which describes the main types of breakdowns and ways to eliminate them.

For those who hold a non.working saw in their hands for the first time. we present a short, summary presentation of a chainsaw device.

The power unit setting the cutting circuit is a single.cylinder two.stroke gasoline internal combustion engine with air cooling. The engine is controlled by adjusting the amount of gasoline supply to the combustion chamber, as well as its quality composition. Control organ. throttle shells associated with the button on the handle.

Location of chainsaw controls

Its work is provided by the fuel supply system consisting of:

Gas tank, the capacity of which is 500 ml. (with a saw capacity of 2 kW and medium loads, enough for 30–35 minutes. work).

Carburetor, in which an airborne mixture with gasoline vapor is formed and injected into the engine combustion chamber.

Electric saw Makita UC4003A. Problem with oil

I have a chain saw electric makita UC4003A. Worked properly 1.5 years. And now something incomprehensible with her. 3 months ago, the oil stopped supplied to the chain. Disassembled. There is not so much experience in repairing electric saws. Basically, the drills, but the jigsaws were repaired, but still found out that the problem in the oil pump is cut off the drive slots. Went to the authorized Bosch service at large. I ordered a company oil pump. After a week and a half, I took. I put a new oil pump. I work fine for half an hour, and then again the old trouble. I dismantled again. the new oil pump is whole, but the oil is not supplied. I gave the saw to the service where I ordered the spare part. A month patiently expected a call from them. I come to pick up, they turn on. it seems to work. Come home. Not a damn. The next day I gave them back. In general, so 3 times already. In the end, I left the saw before illumination.

Tell me what may be wrong? What place to look at?

Master Joe. One acquaintance scored on this automatic market and thoroughly waters himself

And yet the banal question is. the butter is thoroughly washed?

I washed it, I also forced to rinse it in the service, but it did not help (

Well Makita for sure. but definitely the model to call

Yes, it cannot be that it cannot be fixed. And often Makit has such a problem, or this is all chain saws such a problem?

Master Joe wrote: and often Makit has such a problem, or this is all chain saws such a problem?

The same makita and the same problem was a year later, straightened the plastic tube of oil supply (it was closed) and now I fill the transformer oil, everything is shaking normally now

Alteration of charging devices and not only

Anat78 right now I looked. everything is fine with the pipe. Not pushed.(I’m thinking: I don’t remember how my original pump looks. He did not work, but at least his relatives were. Maybe they put me non.native right now? And it is useless to bother with him, especially since after the last time the saw did not even try to work normally.

Found a detail for this saw, there is the article of the oil pump 21245003. In that Boshevsky service they gave a bag with the same article. And here, for example, it is said that this is the article of the oil pump of another saw. UC4010A

The article is true, these pumps are used on different models, and sometimes on chainsaws. The design of the pump is simple, but it requires purity, both external and internal. At the beginning of rotation, the oil enters the beard of the plunger, with further thorage, it is pushed out. But with the mounting of the pump, problems often arise, it is slightly pressed by a bracket and should be clearly lying in its place, in order to provide the desired hook with the gear. Whether the water-spring gear is intact? If everything is assembled correctly, without piercing, the oilshole is not stupefied, there is no air leaks, the density of the tank oil is sealed, everything should work. And how did they check if the oil is coming? Without a saw set?

By the way, you can just check it with your hand pushing it, and the cleaning is mandatory, it was at first that I poured there))

Alteration of charging devices and not only

CL1761 wrote: The article is true, these pumps are used on different models, and sometimes on chainsaws. The design of the pump is simple, but it requires purity, both external and internal. At the beginning of rotation, the oil enters the beard of the plunger, with further thorage, it is pushed out. But with the mounting of the pump, problems often arise, it is slightly pressed by a bracket and should be clearly lying in its place, in order to provide the desired hook with the gear. Whether the water-spring gear is intact? If everything is assembled correctly, without piercing, the oilshole is not stupefied, there is no air leaks, the density of the tank oil is sealed, everything should work. And how did they check if the oil is coming? Without a saw set?

I got it! It was precisely that the oil pump was moving from its place. Because of this, the oil did not fall, then it did not pour out. I fixed the oil pump with a small wire in its place and everything works.

The main malfunctions of electric saw

Breakdown of an electric chain saw do not occur from scratch. Most often, they can appear due to voltage jumps in the network, improper operation of the unit, poor quality assembly quality of the device. The main malfunctions of chain electric saws can be attributed to the following.

• When pressing the button for starting the unit, the saw is not started. Perhaps the network cable or electric fork of the device has failed. If everything is in order with the cable, then the reason for the failure of the unit may be a faulty start button, burning out the engine windings or complete wear of the brushes.
• During operation, brushes on the electric saw are burning, and there is a circular fire on the engine manifold. The malfunction can be caused by worn.out brushes or closing the anchor winding.
• The chain does not enter the lubricant. This happens if the oil ended in the tank, the tube or hole responsible for the supply of lubrication was closed, or the oil pump was out of order.
• The unit cannot develop full power. The possible reasons are as follows: brushes have worn out; Interpreter closure or breakage of the anchor winding; low voltage in the network; The start button failed; jamming in the gearbox occurred; Brake system malfunction.
• The engine engine stops during operation. This behavior of the unit can be caused by jamming the gearbox or wear of the brushes.
• The electric motor of the device quickly overheats. The reasons that the saw heats up can be several: high ambient temperature; poor engine ventilation when working at low speeds; holes intended for ventilation are blocked or clogged; prolonged operation of the unit under a large load; increased pace of work by the device without breaks to rest; gearal malfunction; lubrication failure; Damage to the motor windings.
• The unit makes an uneven drink. The reason for this may be the dull cuts of the chain or uneven wear of the tire.
• When operating the motor, the chain remains motionless. Most often breakdown occurs due to the failure of the clutch. Also, this malfunction can occur during a breakdown of the gear of the gearbox and a drive asterisk.

Clutch replacement with an asterisk

All modern chainships are equipped with a chain brake device and in most models its work is carried out by means of a tape located on the cover of the bus and chain, enveloping the clutch drum.

When the chain brake is turned on and clutching the gas trigger, the clutch disk continues to rotate, and the drum is clamped by the brake tape. If the brake does not turn off in time, but will continue to press the gas trigger, the tire cover and chains will begin to melt, and the clutch drum may burst.

To replace the clutch drum is necessary:

• Remove the air filter lid;
• Stall the engine and unscrew the nuts;
• Pull the clutch disc;
• Stall the engine;
• Install a new disk, press a puck and nut.

Dawed electric makita

Various models of such a device of the most famous brands were viewed on the Internet. The choice fell on the company Makita, although it cost more than the same drank other companies (10,000). When in the store I took this saw for the first time, I realized that the choice was made correctly.

Elegant form, good centering, convenient and reliable captures for the hands, which make the body body are located in the safest position in relation to the cut, protective devices that increase the safety of work emphasized the high qualities of the saw. The very shape of the saw clearly demonstrated the aggressive dynamics of the saw. I did not want to let her out.I have been using a saw for more than five years. There are no complaints or Комментарии и мнения владельцев on the work of the saw, although at first it seemed too fragile. Practice confirmed its reliability. Maintenance of the device is very simple. Do not forget to fill the oil for lubrication of the chain and periodically drag the chain. I have two chains. Therefore, when some severity of sawing feels, I simply replace the blunt cutting chain and turn the saw canvas 180 degrees. The chain is replaced very simply using the key attached to the saw. If the chain begins to bask, it is necessary to clean the space of sawdust, where the mechanical gear of the drive is located, which rotates the cutting chain. In the process of sawing, it is necessary to avoid jamming (pinching) of the chain in the crushes.

Models with a saw disc 35 cm

The longer the saw disk, the thicker the drank. But all nodes in the tool are interconnected and adapted to a certain load.

Presenting the Makita UC 3520A chain saw with a transverse engine location. Manufacturers do not recommend using the tool when cutting more than 15 cm, but users can take risks, some have seen 35 cm.

When tightening the chain, you must sag slightly from below, about 1 cm, check with your fingers without effort.

Saw well balanced, easily captured. Dawed raw and dry wood of medium density. The chain is adjusted very conveniently, turning the lamb, and then with a click. Within an hour of work, oil consumption should be 200-300 ml. A small leak of oil in a non.working position is easily eliminated

But you must pay attention, the oil level is visible in the lower third, and you need to replenish. Oil for chains of chainsaws

What oil to use to lubricate the chain chain? Chainsaws are a popular instrument for those who have to do countless household chores without the help of others. They are used for various purposes. to prepare firewood, cut off dry branches How annoying it would not sound so that the device has served B.

Electric saw is used for large volumes of carpentry and carpentry, where there is an electric socket nearby. The efficiency of working with it largely depends on how correctly the chain is stretched on its bus, since the slightly stretched, the chain during the operation of the saw will fly off the tire, and the pulled out. create a large load on the leading asterisk and the engine of the device. The following are several practical recommendations on how to properly pull the chain onto the electric saw tire, practically, any Chinese model.

Installation of the tire on the electric saw on one end of the tire canvas there is a slot and two holes on the sides of it. When installing the tire with a slot, it is put on a special stud on the housing of the electric saw, and one of the holes on the pin of the tension mechanism.

Battery malfunctions for screwdrivers

Usually, when failing of a nickel-cadmium battery for a screwdriver, one or more battery elements fail. Therefore, the main task when repairing the battery of an electric screwdriver is to identify the failed elements.

Left: total voltage of serial assembly. Right: voltage on one cell

Then attach the load to the battery (turn on the screwdriver). If you do not want to assemble again, connect the load in the form of a 12 volt light bulb to the terminals of “garlands; Fully charge the screwdriver battery; After a while, measure the voltage on the elements again. Those banks in which the voltage differs from the average by 0.5-0.7 volts must be dropped or replaced

During visual examination, pay special attention to banks with traces of corrosion and divorces. Disassemble the case; Measure the voltages of all elements and mark those whose voltage is below the nominal. Nominal voltage is indicated on the body of each jar

Usually they are wrapped in a paper film;

Thus, work is already underway with objects recognized as faulty. Read more about this below. And here it is also worth mentioning such malfunctions as a violation of welding at the joints of the elements, the failure of the temperature sensor, etc.D. But breakdowns of this type are very rare and do not deserve attention.

Types of batteries

For Shurik, you can choose a three type of battery:

The first.type models are large. They differ in low cost and uninterrupted work at negative and positive temperatures. Such devices are charged a large number of times, but due to the memory effect, they must be kept in a completely discharged form. Charging must also be done after the battery is completely discharged.

The memory effect means a decrease in the battery capacity, which reduces the time during which the device can be used between charging. The indicator of the remaining charge is fixed by the battery and after charging will consume energy to this level

Therefore, when using the tool, it is important to completely discharge the battery

NIMH batteries are light and environmentally friendly to use. They are able to work for a long time without additional refueling. There is also a memory effect in models of this type, but it does not greatly affect the battery. A significant disadvantage of this line of batteries is intolerance to negative temperatures. When the thermometer reads to minus two degrees, the battery gradually discharges. Store the device with this type of power source in a warm room, completely discharge the battery.

Lithium-ion batteries appeared in 1991 and became the most popular and affordable power source. They completely lack the effect of memory, the batteries have a large container and can hold a charge for a long time. The weight of the battery is almost half as much as the analogues. Charging can be made from a battery of any power. Professional models of screwdrivers are often equipped with this type of battery.

Makita UC4530A/5M Operating Instruction Instruction. page 14

Makita UC4530A/5M instructions for the device chain saw contains pages in Russian.

You can download PDF file of this instruction: download pdf

Only with the engine turned off and pulled out-

tank so that the dirt does not get into the tank.

Important indication!At the first launch, it is necessary at first completely for-

Fill all oil pipelines so that the oil falls on

Drinking device.This process can last up to two minutes.- the level of oil is clearly visible in the viewing window (2).To ensure sufficient lubrication of the saw chain in

the tank should always be enough oil. Capacity

tank (140 ml) is sufficient for approximately 1/2 hours

Lubrication of sawing tsepidololo when the engine is turned off and pulled out

How to remove a chain from the electric saw Makita video

During operation, the labyrinth has an oil tank and oil supply pump. The lock buttons are launched on the case. Comfortable handles and protective screen provide a long working tool without fatigue.

Speaking is due to the transmission of torque from the engine to the gearbox, from the tire gearbox, which sets the chain with sharp teeth. Simultaneously with rotation, the lubrication of the chain begins.

Makita sawing chain is in two engine design variants. Saws where the engine is located along the axis of the tool, better balanced. They are convenient for work for a long time and for an accurate cut. However, the design is complicated by the presence of a conical coupling, and saws with a longitudinal location of the engine are an expensive professional tool. These are models in the marking of which are “30a”. This tool is longer, looks predatory.

For a vertical sawing saw, the 20A modification will be more convenient if you saw it from top to bottom and at a right angle. But it is difficult to cut such a saw on trees due to unstable balancing. For sawing firewood, the Makita electric saw is ideal, and there is no need to overpay several thousand for a professional tool.

The capacity of the device depends on the capacity. For professional saws, you need an engine with a capacity of 2.5-4.0 kW with a voltage regulator. Households include models with a capacity of 1.5-2.0 kW. Select the necessary tool with a power supply, since the unstable voltage in the networks negatively affects the supply node.

The size of the tire must be selected in accordance with the nature of the work. Saw logs for the construction of a round forest can be made using a 45 cm long tire to cut a 30-centimeter cutter on the pole flyover. Accordingly, the saw will be compact and easier with a smaller bus.

Existing electric saw malfunctions

In most cases, subsequent breakdowns are found:

• If the tool does not cut, it will be useful to check the availability of power supply, the condition of the cables and connections.
• If the supply network is in good condition, you will need to check the brake of the chain, which will stop the operation of the device. To remove this problem, it will be useful to change the position of the brake element shield.
• If the electric saw does not turn out, it will be necessary to check the condition of the cable.
• If the power of an electric saw has decreased, this means that the brushes have worn out. In this case, they must be changed.
• Quite often the chain stops not immediately, but after some time. The longer the file is used, the enormous this light of time becomes. In order to remove this case, it is necessary to change the brake ribbon of the file.
• In some cases, in the process of using the saw there is a nasty sound. In most cases, it occurs due to the missing amount of oil in the device or due to clogging of the grooves that conduct it. Chain from the chainsaw: how to correctly sharpen the chain from the chainsaw, for. To exclude the malfunction, it will be useful to add oil and clean the grooves.
• In the process of repair work, you need to use only unique accessories, which are recommended by the manufacturer. If the elements are applied from the advantage of manufacturers, this will lead to breakdowns of the adaptation or the appearance of unexpected situations.
• If the case is damaged, then the tool is most perfect to hand over the repair.
• It is not allowed to create a substitution of cutting parts of the device, which are not intended for it.

Chain electric saw Makita UC 3520A Review

I am a review of my chain electrode Pilemakita UC 3520A. I partially disassemble the saw casing,

The lever in the form of a damper in front of the handle is a chain brake. A person throws a blow, he rests his hand on a flap, the engine stops. This is a background protection.

The makita chain electric saw has a lock from the engine overheating, turning on on. A smooth increase in the starting current allows you to gradually gain speed, extending the service life of all nodes.

Experts advise to refuse to buy a saw if it is not blocked. This is the first sign that the model is forged.

showed that Makita saws take first places in the Yandex Market rating held by user surveys and purchase goods.

Models UC4030A, description and reviews

Electric chain saw Makita UC4030A is recognized as a leader among professional tools. With a power of 2.0 kW weight 4.4 kg and tire length 40 cm, the saw has outstanding qualities. The distance between the chains of 3/8 inches allows you to literally bite in wood. The reviews have a high.quality Romanian assembly of the device.

Especially pay attention to safety. The tool is automatically turned off if the circuit is binking. Therefore, the chain is restored and broken. The start is smooth, the chain is gaining momentum gradually.

A very strong gear, even when sawing oak, at the entrance of nails, the asterisk passed. Mark the electromagnetic brake of the engine by stopping the circuit in a matter of seconds.

Disadvantages include a reduction in power with an unstable voltage in the network, but the manufacturer warns about this. Another problem for users is the consistency of oil. Less viscous is quickly lost, dense is not obtained. The conclusion is to use the recommended oil.

How to choose the right chain?

The chain along with the engine is the most important functional part, therefore, with active use, it is often subject to repair, sharpening or complete replacement. It is better to replace the old, worn chain, and for this you need to know some of the choice of choice:

• When replacing any spare part (stars, tires or circuits), you need to remember the compatibility of electropol elements, that is, to purchase parts of the manufacturer only: for example, Makita electric saws require Makita production chain.
• Select the chain depending on the targets. If you need great power, it is more profitable to purchase a product with a step of 3/8 inches, with low loads 0.325 inch enough. The volume of the cylinder in this case does not play the role.
• Pay attention to the angle of sharpening. this is useful for further care, repair or restoration. For greater performance, choose an angle of 30º. it perceives large loads easier. However, with complex wood processing (if it is raw or frozen), it will better stop at 10º.
• The length of the chain must necessarily correspond to the size of the tire. In the process, it can stretch out, sag, but the question is solved by a simple removal of 1-2 links.

The main malfunctions of electric saw

Breakdown of an electric chain saw do not occur from scratch. Most often, they can appear due to voltage jumps in the network, improper operation of the unit, poor quality assembly quality of the device. The main malfunctions of chain electric saws can be attributed to the following.

• When pressing the button for starting the unit, the saw is not started. Perhaps the network cable or electric fork of the device has failed. If everything is in order with the cable, then the reason for the failure of the unit may be a faulty start button, burning out the engine windings or complete wear of the brushes.
• During operation, brushes on the electric saw are burning, and there is a circular fire on the engine manifold. The malfunction can be caused by worn.out brushes or closing the anchor winding.
• The chain does not enter the lubricant. This happens if the oil ended in the tank, the tube or hole responsible for the supply of lubrication was closed, or the oil pump was out of order.
• The unit cannot develop full power. The possible reasons are as follows: brushes have worn out; Interpreter closure or breakage of the anchor winding; low voltage in the network; The start button failed; jamming in the gearbox occurred; Brake system malfunction.
• The engine engine stops during operation. This behavior of the unit can be caused by jamming the gearbox or wear of the brushes.
• The electric motor of the device quickly overheats. The reasons that the saw heats up can be several: high ambient temperature; poor engine ventilation when working at low speeds; holes intended for ventilation are blocked or clogged; prolonged operation of the unit under a large load; increased pace of work by the device without breaks to rest; gearal malfunction; lubrication failure; Damage to the motor windings.
• The unit makes an uneven drink. The reason for this may be the dull cuts of the chain or uneven wear of the tire.
• When operating the motor, the chain remains motionless. Most often breakdown occurs due to the failure of the clutch. Also, this malfunction can occur during a breakdown of the gear of the gearbox and a drive asterisk.

Electric chain saws “Makita”, operating instructions

Makita electric saws are always released with instructions that are divided into sections and introduces the newly.minted owner of the equipment with full information about the purchased product:

• Makita chain saw device, step.by.step assembly.
• Safety during work and operation.
• Technical characteristics of the acquired modification.
• Techniques and methods of operation (how to work, what and where to saw).
• Preparation of tools for work.
• MAKITA chain saw maintenance.
• The occurrence of malfunctions, causes, repair.