How to eliminate the backlash of circular saw. How to remove a saw beating

DIY Hand Circular Pilament Repair

Due to active operation, the equipment often needs to be repaired. However, the repair of circular saws may be required even with moderate workload. In the process of using and maintenance of disk saws, popularly called circular, one should take into account some nuances of their functioning, be able to diagnose and, if possible, eliminate problems.

If the saw lost power, began to seize and stop, these are unequivocal symptoms of its failure. Additional signs indicating a malfunction of the device include overheating of the engine, difficulties in starting, the occurrence of smoke or smell of burning, sparking inside. In all these cases, the tool must be immediately disabled and sent for diagnostics. In order to repair the circular saw, they usually seek the services of masters, but there are ways to cope with the breakdown on their own.

The main problems and their causes

The circular saw is a very convenient and practical tool that allows you to realize a lot of wood processing methods. With its help, you can cut boards along and down, without restrictions on size and distance, make rails, remove excess material in parts. Such a device is indispensable when working at altitude, in close and inaccessible places where large.sized and stationary analogues are powerless.

Like any electrical devices, such saws differ in quality and permissible working intensity. Experts distinguish two main classes: industrial and household. The industrial disk saw is designed for operation in a long.term intensive load, and household is considered a low.quality tool for which failure is a common thing.

Disco saw tooth device diagram.

It is with the last type of device that you most often have to deal when working at home. Household saws are designed for periodic short use, but even this does not save them from frequent breakdowns. In these power tools, as a rule, neither power regulators, nor protective devices, nor fuses are provided for. There is only a power button.

Such a tool is especially vulnerable to various malfunctions and can break at any time. The main reasons why this can happen:

• short circuit;
• excessive engine load;
• inaccurate treatment;
• strong pressure;
• work with a blunt saw;
• Operation of the tool for other purposes.

Adjustment of the guide slice on the table and disk

The first thing to do for the correct setting of the circular is to align the guide grooves on the countertop strictly parallel to the cutting disk. This will need to have a caliper at hand. To achieve the ideal position of the guides and the working body is easy. The error should not be more than 0.05 mm. Otherwise, even a slight deviation adversely affect the processing of lumber.

Checking the stops of a saw for parallelity

Now you need to adjust the parallelity of the stop with the groove or slot. As in the previous setting, the maximum allowable error should not exceed 0.05 mm. Когда параллельность упора нарушена, доска при резке будет сильно смещаться в сторону, а от этого заготовка получится очень неровной, и сделать аккуратную конструкцию из пиломатериала не удастся.

Malfunctions of the Interskol circular saw and their elimination

Due to active use, the technique often needs to be repaired. But the repair of circular saws may be required even with moderate workload. During the operation and maintenance of disk saws, in the abdomen of the circular, one should take into account some aspects of their functioning, be able to diagnose the ability to eliminate problems.

If the saw lost power, began to seize and stop, these are specific symptoms of its failure. Additional signs indicating a malfunction of the device include overheating of the motor, difficulties in starting, the appearance of smoke in other words of the aroma of Gary, sparking of snus. In these many cases, the tool can be immediately disabled and sent to diagnostics. Town as a goal of repairing a circular saw, they usually turn to the services of masters, but there are methods to cope with a breakdown without the help of others.

The main problems and their causes

The circular saw is a very successful and convenient tool that allows you to realize a lot of wood processing methods. With its help, of course, cut boards along and down, without restrictions on size and distance, make rails, remove excess material in parts. Such a device is indispensable while working at a height, in tight and inaccessible places where large.sized and stationary analogues are powerless.

As well as any electrical devices, such saws differ in quality and permissible working intensity. Specialists identify two main classes: industrial and household. The industrial disk saw was created for operation in the presence of a long.lasting load, and household is considered a low.quality equipment, which is a breakdown. everyday business.

With the last type of devices in most cases, you have to deal with the home. Household saws are designed for periodic short.time implementation, this does not help them out from frequent breakdowns. In these power tools, you do not have power regulators, protective devices, or fuses. There are only button on.

Such a tool is especially vulnerable to different defects and may break down instantly. The main prerequisites for which this sometimes happens:

• kutsey close;
• excessive load on the engine;
• inaccurate appeal;
• strong pressure;
• work with a blunt saw;
• The operation of the tool is not for the purpose.

Diagnosis and elimination of simple defects

First of all, when performing the repair of circular saws, it is recommended to use a LATR (adjustable laboratory vehicle), designed for a load of more than 9 but also additionally equipped with built.in linear ammeter and voltmeter. For the purpose of safety, the Latra should be connected to the mains through a dividing transformer with a transmission coefficient of 1: 1. These measures will help exclude possible damage to the electrical wiring and interference on the network due to a short circuit and errors of handling.

Repair of the circular saw begins with the determination of the moral disposition. This is a mechanical damage or breakdown of someone electronic component. Localization of the breakdown is carried out due to certain signs. For example, from the inside of the tool there is smoke with a sharp burnt smell, uncharacteristic sounds, noise and whistle are heard at one time.

# Submersible saw Interskol # Repair.

After intense operation. Cutting doors in the size of submersight.

Repair of the circular saw Interskol DP 190/1600m. Arrangement of carpentry.

Continuation of the epic with the repair of a hand circular Interskol

However, sometimes the saw does not work at all. Neither sounds nor smell. it does not turn on. Paradoxically, this case is the most optimistic, since the cause of this inoperability can be a banal violation of the integrity of the network cord or break its contacts. Therefore, first of all, we check the supply wires for a cliff.

Circular saw test scheme.

If everything is in order with the cord, the rush to disassemble the device is still not worth it. Before that, it is better to check the contact brushes. These are elements of the so.called sliding contact, which are designed to power outdoor rotating elements of electrical devices. They are several small bars of special conductive material (coal or graphite), resting directly on the collector (rotary part of the electric motor).

Due to the constant rotation of the collector, the brushes wear out strongly, erasing about moving surfaces. After some time of operation, they grow to the point that they can simply “hang” over the contact sites, not reaching them. In addition, sometimes there is a violation of contact at the junction of the brushes with stator terminals. All this should be regularly checked and corrected, for which in most tools a special casing is provided or a cover with easily unscrewing bolts.

Checking internal details

Dismantling of the circular saw is a rather complicated process, for each individual device it is individual. Nevertheless, if everything is in order with the cord and brushes, and the device still does not work, the analysis of the case is inevitable.

Voltage regulator for circular saw.

The case of most of such electrical appliances consists of two fastened halves with a longitudinal seam between them. Having removed the disk and unscrewing the bolts and other mounts, we carefully open the shell, trying not to damage the internal elements and not lead to an even more serious breakdown.

Regardless of the brand and the quality of the assembly, one of the most vulnerable places of such units is the power button. Its malfunction is a very common cause of functioning problems.

In most models, this button is usually located in the handle of the apparatus. Having promoted and disconnecting the case, you can get direct access to it. Check the service of the circuit breaker using a tester. If there is no contact closure when pressing, the button is replaced.

Device and principle of operation of a disc saw

The manual disc saw differs from the end saw with the absence of a bed with a rotary table, as well as the placement of the handle. But in general, both models are similar in the internal device, the principle of operation and do not differ in the complexity of the design. The following figure shows the device of a manual circular saw.

The composition of the unit includes the following main elements.

• Upper protective casing with a hole for ejecting sawdust.
• The case in which the electric motor is located and the start button. Some electric saw models can work from batteries. In this case, the housing also houses the battery block.
• The lower (mobile) protective casing, which automatically closes the cutting element after it exits from the workpiece.
• Saw disk. Attached to the gearbox shaft using a nut or bolt.
• Parallel emphasis. Allows you to make even cut without using additional devices.
• Supporting plate (sole) of the unit. Thanks to it, the tool is installed on the workpiece or tire at different angles.
• Depth regulator. With it, you can adjust the output of the saw disk relative to the supporting plate.
• The control regulator of the sole angle. Allows you to tilt the unit for sawing at an angle.

This tool works on the following principle. Power from the mains or battery enters the start button that breaks the chain. When you press the start key, the current begins to enter the electric motor. Below is the power circuit of the unit.

The electric motor starts and transfers rotational movement through the gearbox to the saw disk. The unit is installed using the sole for the workpiece or the guide tire, after which the process of both longitudinal and transverse sawing is performed.

Circular puck for circular saw?

Flange or clamping washer securely fixes the disk. On various models, saws are used both by a separate flange from the bolt and soldered with it.

The main function of the clamping washer is to evenly press the sawing canvas to the pulley. A properly installed clamping washer should sit symmetrically on a circle.

The main and main rule when replacing the disk with a circular saw is the complete disconnection of the tool from the power supply. In order not to accidentally injure the saw with a saw, it is better to use gloves.

To replace damaged details, in particular, protective adaptations, use only original details, since the details that are not allowed to use the manufacturer can lead to an unpredictable damage.

Work on technical maintenance and repair, not described in the current section, should be performed only by specialists.

Since the saw disk can be greatly heated in the process of work, touching it immediately after turning off the machine can lead to a burn. Let the saw disk cool. Do not clean the coastal saw disk with combustible liquids.

There is a danger of cutting even about a fixed saw disk. The replacement of the saw disk is stuffing in gloves.

Turn the rotary pen counterclockwise to the stop and pull it forward.

Using the locking lever of the longitudinal movement, to fix this node in the front position.

Rotation of the Makhovichka translate the saw disk into the upper Polo.

Unscrew the profiled insert (58) of the table and remove it.

The lever (59) fixation of the saw disk is located on the belt drive on the left side of the machine.

Squeeze the lever. Manually turn the saw disc until the shaft is fixed in a non-retractable position. When unscrewing the mounting screw, the lever in the pressed position should be maintained.

Dill out the mounting screw (60) using a hexagonal end (pay attention to the left thread!). Remove the fastener (60), remove the outer flange (61) from the shaft of the saw disk and the saw disk itself

Remove the fastener (60), remove the outer flange (61) from the shaft of the saw disk and the saw disk itself.

Do not use cleaning products (for example, to eliminate residues of Smo) that affect the element of light alloys-they can have a negative impact on the strength of the structural elements of the circle-lapid machine. eleven. Install a saw disk (turning

Attention to the direction of rotation!). maximum

saw discs from high-production high-speed fast-cutting steel (HSS);

saw discs with visible sub-signs of damage;

To install saw discs, use only original fasteners.

Do not use individual rings for installing saw discs with a smaller size of the landing hole. this can lead to disconnecting the disk during operation.

Saw discs should be tired so that they rotate without beats and cannot be used in the process of work.

tightly tighten it with the attached inconceum (pay attention to-left thread!). At the same time, it is necessary to squeeze the lever (59) of fixing the saw disk to hold the shaft of the saw disk in a fixed Polo-cord

Do not lengthen the tool used to screw the pile disk.

Technical breakdown occurs in the work of any, even expensive equipment. But you can solve it with your own ingenuity, resourcefulness and skill. The weak point of the corner grinder is a cutting disk, which is often damaged due to the clamp. That is why every master should know how to change the disk on a corner grind.

To come in

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Due to active use, the technique often needs to be repaired. But the repair of circular saws may be required even with moderate workload. During the operation and maintenance of disk saws, in the abdomen of the circular, one should take into account some aspects of their functioning, be able to diagnose the ability to eliminate problems.

If the saw lost power, began to seize and stop, these are specific symptoms of its failure. Additional signs indicating a malfunction of the device include overheating of the motor, difficulties in starting, the appearance of smoke in other words of the aroma of Gary, sparking of snuts. In these many cases, the tool can be immediately disabled and sent to diagnostics. Town as a goal of repairing a circular saw, they usually turn to the services of masters, but there are methods to cope with a breakdown without the help of others.

REDURTOR Repair and how to lubricate it

The task of the electrician gearbox is to transform the rotational movement from the electric motor into the reciprocal and transfer it to the rod with a file. At the same time, completely different technical solutions are used on different models of different brands.

It can be miniature crankshafts (by analogy with the crankshaft of a car or drive of the steam locomotive), mechanisms with sliders, gears with an eccentric hole or spike, etc.D.

In turn, both gear gear (slots on the shaft of the electric motor rotor), and individual plastic or metal gears are used. Therefore, the repair is carried out depending on the breakdown on a specific model.

The most common typical lubricant is used for the electrolobian gearbox. There are no high speeds and temperatures requiring special modified lubricants. The usual domestic solidol is used, Litol and its foreign analogues for lubricating bearings, gears, etc.

The only nuance. mechanisms with plastic details requires lubricants neutral to plastic. Litol, solidol and other metal lubricants are neutral not to all types of plastic.

Some plastics tolerate such lubricants well, others become soft. In order not to risk it, for steam metal/plastic, domestic lubricant cyatim 201 or special silicone lubricants for plastic parts is recommended.

Excessive lubrication is strictly prohibited. The desire to “write as much lubrication as possible” leads to the fact that it begins to squeeze out into the winding of the electric motor, clogged with dust and small sawdust, forming a dry consistency, thereby complicates the operation of the mechanism.

The lubricant is applied only pointwise to the conjugated rubbing parts, in places of their contact and mutual friction, several grams.

What are the breakdowns, how to determine a worn part

The most common malfunctions of circulation saws are:

one.When you press the start button, nothing happens. The device is not working. The reason may be a network cable malfunction. It is also possible to fail an electric fork or electric grinder.

2.Strong engine overheating occurs. This may arise due to the fact that there is a cliff somewhere, that is, an inter-seal closing. Anchor and stator have coils, where such a situation may happen. Sometimes the engine can overheat due to too frequent, and a rather long use of the tool.

3.A gearbox can also overheat. This is a consequence of the bearing in unusable. And also often happens that the gears were not processed in time with lubricants.

four.When brushes wear out in a circulation saw, they begin to spark.

5.The engine collector is surrounded by a burning ring. It may appear due to the fact that the anchor winding is faulty. Another reason for this phenomenon may be graphite dust that clogs the distance in the lamellays.

6.There is a very weak power in the operation of the circulation saw. There is a chance that the voltage in the network has dropped sharply. This is also possible due to a worn winding in the engine. Electric brushes are out of order, or the start button is broken.

7.There are still such cases when you work with a disk saw, at the same time you hear creaks, rattle and all sorts of other unpleasant noises that have not previously been observed. It is likely that the teeth broke in the gear, or the bearings are broken.

eight.When you turned on the mechanism, you hear the engine hum, but the saw does not want to work. Perhaps the gearbox was jammed.

Checking internal details

Dismantling of the circular saw is a rather complicated process, for each individual device it is individual. Nevertheless, if everything is in order with the cord and brushes, and the device still does not work, the analysis of the case is inevitable.

Voltage regulator for circular saw.

The case of most of such electrical appliances consists of two fastened halves with a longitudinal seam between them. Having removed the disk and unscrewing the bolts and other mounts, we carefully open the shell, trying not to damage the internal elements and not lead to an even more serious breakdown.

Regardless of the brand and the quality of the assembly, one of the most vulnerable places of such units is the power button. Its malfunction is a very common cause of functioning problems.

In most models, this button is usually located in the handle of the apparatus. Having promoted and disconnecting the case, you can get direct access to it. Check the service of the circuit breaker using a tester. If there is no contact closure when pressing, the button is replaced.

Do.it.yourself disk saw repair

When starting to repair the unit with your own hands, it is not necessary to disassemble it completely to clarify the reasons for the breakdown. Some malfunctions are characterized by specific symptoms by which you can determine the problem and already purposefully disassemble this or that part of the device.

The saw does not turn on

If when you press the start button, the engine of the unit “is silent”, then the first thing to focus on is the network cable, provided that there is electricity in the outlet (connect the device to another outlet for verification).

Advice! Before checking the cable, you need to disassemble the electric fork and make sure that the cord conductors are connected to its pins.

To check the electric cable, you need to disconnect the handle. This will help to get to the contacts to which the wires of the network cord are soldered. Further, with the help of a tester, call each wire, pressing one probe to the soldered contact, and the second. to the pin of the fork.

If the network cable is intact, then in search of a malfunction do the following.

• Blind the entire chain by the tester, starting from the cable entrance to the unit to the launch button. You should also check the contacts of the button at its input and output with the key pressed. In normal condition, the torn chain should be closed. Call all the wires after the button going to the engine brushes.
• If everything is in order with the conductors, check how much the electrodes of the brushes have worn out. After wear of the electrode 2/3 of the initial size, it should be replaced. Brushes, regardless of how much each of them has worn out, change in pairs.
• If the brushes are in good condition, then, most likely, the engine has failed. In his windings, a cliff or inter.flip.circuit could occur. In this case, it is better to entrust the engine repair to specialists who will rewind the stator coils or anchor.

The engine heats up

The unit can heat up excessively, for example, with its intensive use, as well as when sawing hard wood or the use of a saw disk with a large number of teeth, when the load on the engine increases significantly. Also caused by overheating of the malfunctioning motor associated with the windows of the stator and anchor, which are eliminated only in the service center.

Brushes are burning

Strong sparking from under the brushes is caused by excessive wear, when the spring can no longer press the electrodes to the collector with the required force. To replace the brushes, you need to disconnect the engine cover or remove them through special holes in the engine housing (depending on the power plant model).

Jammed the shaft during operation

This malfunction may happen when for any reason, a stopper is pressed during the tool. It is designed to fix the shaft when replacing equipment and should be used after a complete stop of the engine. Otherwise, the Stop Stop rod breaks down, and its debris fall into the engine, causing jamming. There are frequent cases when this leads to deformation of the anchor shaft. Also, the consequence of pressing on the stopper can be the split of the gearbox body, the fragments of which can damage the gears and provoke their jamming. To solve the problem, you will need to replace the anchor, a stopper leading (large) gear of the gearbox and its body.

In some cases, the gearbox can jam with the complete destruction of the bearing.

The saw stops in the process

The engine stops in most cases cause a cavity worn electrical brushes. Когда контакт между электродом щетки и ламелями коллектора нарушается, происходит выключение агрегата.

Often, when buying brushes for a given apparatus, products with a short conductor connecting the electrode to the plate come across. This conductor is located inside the spring and does not allow it to be completely imprisoned. Когда электрод изнашивается до определенной длины, то прижим его к коллектору прекращается, поскольку этому препятствует короткий проводник. If you, examining the brush, find that it is not yet worn out and the spring is not unclenched, then the part should be replaced.

The gearbox body is very hot

The rapid heating of the gearbox occurs if the shaft bearing is unusable, on which the gear is fixed and the equipment is attached. In this case, in addition to heating, you can replace the appearance of extraneous noises in this unit node. It is necessary to disassemble the gearbox and change the bearing. The gearbox will also heat up if it is not enough lubricant or it is completely absent.

Advice! Periodically, you should disassemble the gearbox and check the presence of lubrication. If necessary, refill with lubrication the internal space of the node. For these purposes, you can use a special lubricant for gearboxes of corner grinder.

The saw does not gain power

If during the use of the unit you noticed a drop in its power, then it is first recommended to check the voltage level in the network. Sometimes even a slight drop can negatively affect the power of the power tool.

Also, loss of power can be observed with wear of the bearings of the anchor or gearbox bearing. In this case, extraneous noises will be heard, previously not characteristic of this unit. By their localization, you can determine where the problem bearing is located. in the gearbox or engine. To replace bearings, you will need to disassemble the disk saw. How to do this was described above.

If during the operation of the unit is not heard, the engine still poorly develops momentum and power, then pay attention to its collector. Usually on it you can see a circular spark (fire ring). This can happen due to the inter-flip closing of the anchor coil or the accumulation of dirt between the collector lamps.

Expand the engine housing and carefully inspect the collector (the place where the electrodes of the brushes glide). It consists of parallel stripes (lamellas). There is a small gap between them. When this gap is clogged with conductive graphite dust formed during the wear of the brushes, a short circuit occurs between the lamels, and a burning ring around them appears.

How to use it correctly?

By choosing and setting up as the end saw, you can immediately proceed to its use

But it is very important to do this according to the rules. The approach is approximately the same regardless of the specific model of the device

It is appropriate to consider the basic principles on the example of Stanley STSM 1510

It is extremely important! For a minute, one must forget that the end saw is a powerful and highly effective power tool and the slightest negligence in handling it can lead to sad consequences

The launch of the operation is made by a trigger switch. However, the cuts themselves will not be made until they press the lock lever. As soon as the launch is completed, the saw is lowered to the workpiece. The disk immediately begins to cut it. The stream of shavings is erupted.

When cutting blanks at a right angle, they most often try to hold wooden parts by hand

But novice home masters should do such work with a clamp: it will keep all the necessary details themselves, allowing you to concentrate on working with a cutting disk. And more reliable, and faster, and safer

When working with blanks at an angle different from 90 degrees, the clamp must be used in any case.

The cut angle can be adjusted by turning the platform. To do this, unscrew the handle that plays the role of a rotary clamp. Then this latch is squeezed downward. Now you can move the platform. Typically, the most popular angles of cuts on the scale of end saws are specially marked.

When working with any end saw, you must carefully check the serviceability of all safety components:

• smooth launch systems;
• automatic shutdown unit;
• disk replacement block;
• defense systems for isolation;
• fixing part;
• casing over the cutting surface.

Dismantling of the tool

Almost all malfunctions of electrical disk saws cannot be eliminated without disassembling the device partially or completely. Full disassembly of a hand.based electrical saw using the Interskol unit is performed in the following order.

• Unscrew the adjusting screws of the angle and depth fixed on the sole of the device.
• Press the Reducer shaft button and use a hexagonal key to unscrew the bolt holding the saw disk.
• Putting the lower protective casing to the side, remove the circular disk.
• To remove the support sole, first unscrew the fasteners on its lower side.
• Further, it is necessary to remove the ziger ring with two screwdrivers, a stopping rod on which the sole rotates to change the angle.
• Insert the screwdriver into the gap between the hull and the sole, then push it away and remove it.
• At the next stage, unscrew all the fasteners located on the upper casing of the unit.
• Also unscrew the screws holding the mobile saw cover.
• Disconnect both protective casings from electric saw.
• Use a rock key to unscrew a bolt holding a crumbling knife and remove it.
• Unscrew the rod holding the movable mechanism of the casing, and disconnect all its elements.
• Next, you should disconnect the gearbox of the unit by twisting 2 screws.
• When the mechanical part of the device is disassembled, you can begin to disassemble the electrical part of the device. Unscrew the fasteners holding the engine cover and remove it.
• Removing the lid, you will see two electric brushes. If they need to be completely disconnected from the engine, then it is recommended to outline one of them using a marker, as well as the place from where it was removed.
• Next, you should twist the screws with which the engine body is attached to the gearbox body.
• Having unscrewed the fasteners, disconnect both nodes.
• In the disconnected part of the engine housing, you will see the stator coil.
• Next, you should twist the entire fastener from the unit handle. But before its disconnecting, you need to remove the rubber lining, pushing it with a screwdriver.
• Having removed one half of the handle, you will see the module of the smooth start of the engine and the start button.

On this, the full disassembly of the disk saw ends.

The editing of an under.stop saw

Kuy on a bare anvil, combining editing with a dent. On a flat anvil forging is possible if the bulkings are small, that is, they allow you to get a bod of a hammer and a high sound when hit. Or for a better fit of a saw on an anvil on a convex anvil.

However, the saw can be straightened with a minimal increase in the dent, for example, laying a thin dense cardboard between the anvil and saw. Suitable electrocardon with a thickness of 0.5-1 mm or presshpan. In this case, you should choose the right power of the impact, since you need to beat it weaker on cardboard. At the end of the amendment, the disk will need to be imprisoned to the required value. Especially good editing on cardboard when working with thin saws. Both of these methods require subsequent symmetry.

Editing optimally pierced saw

Conducted by unbalanced weak blows on a bare anvil or on cardboard. It may be necessary to remove excessive dentitions after finishing symmetry, for example, balanced blows at the second zone “B” in a quarter of force on both sides of the saw of 16 sectors.

First you need to remove excessive dent, which depends on the degree of reproduction. This can be point 2 zone “B” on both sides of the saw on 16 sectors. Either the first and third points of the “B” zone on both sides on 16 sectors. The impact of the impact is as a rule, by a quarter. After that, you can already proceed to edit.

Repair of the drive gear and spindle

Reducer removal (see.photo above). Turn off and turn off the saw. Remove the disk and lower shield. Unscrew the gearbox, carefully pull the axis and remove it from the upper protective barrier.

Reducer purification (see.photo above). Wearing rubber gloves, wipe the old grease from the gearbox and the case with a clean cloth. Clean each component with a small brush moistened in a solvent, trying not to get inside the engine body. In case of damage to the drive gear or spindle, replace the entire gearbox with an accurate duplicate.

Gear lubrication (see.photo above). Half fill the gearbox body with clean white lubricant or lubricant specified by the manufacturer. Install the gearbox back into the gearbox and turn the shaft to make sure that the drive gear interacts with the worm gear. Install the gearbox in place.

Circular saw engine repair and bearings

Remove the lower and upper casing. If the gearbox body of your model is not removed from the upper casing, it is necessary to remove it. Carefully remove the knots of brushes. Pull the engine shaft, holding one hand ready to support the anchor.

Lubrication and inspection of the engine of the circular saw.

Use the old toothbrush to clean the engine fan and anchor coil from dust. Apply a white grease or a lubricant indicated by the manufacturer on any open bearing at each end of the engine shaft.

On the depicted model, only a bearing located next to the switch can be lubricated and can be lubricated. Then we turn the bearings at each end of the engine shaft.

If the bearing rotates unevenly, replace the replacement with an accurate duplicate. Perhaps the bearing cannot be removed, in this case take anchor for service repair.

Lubrication and inspection of bearing nodes.

Also inspect the field coil unit mounted inside the engine body. If the engine or winding is darkened, perform maintenance of engine components. Install the engine, upper and lower protection and knots of brushes in place. Set the saw in place and check the saw for a stress leakage.