How to disassemble the saw to remove the clutch. How to remove and change the clutch on a chainsaw with your own hands

How to remove clutch from a Chinese chainsaw

One of the most important nodes of the chainsaw is a clutch or adhesion mechanism. When operating the tool, this part may fail, which will entail the impossibility of carrying out work on sawing wood. If the clutch mechanism has come out of the system, then the question immediately arises of how to remove the coupling on a chainsaw. Such a need arises when it is necessary to repair or replace the device. How to do this is described in the material.

Most sawmills do not understand the principle of operation of the mechanism of clutch chainsaw. When working, knowing the principle of functioning is not necessary, but when the malfunctions arise, then in order to eliminate them, you will need to find out the design and features of the work of the chainsaws.

Modern chainsaws are equipped with centrifugal type adhesion mechanisms. Centrifugal clutch. This means that its performance depends on the rotating moment of the engine. The main purpose of the coupling on the chainsaw is to ensure the transmission of torque from the crankshaft of the engine to the saw set (chain). The device works in automatic mode, and how it happens, we will find out in detail.

The clutch mechanism consists of the following structural elements:

  • A drum with a removable or non.Removable asterisk. Is a transmitted mechanism
  • Friction linings. Under the influence of centrifugal force move, entering into the engagement with the drum
  • Spring. Ensures the pressing of the linings to the crankshaft

Now about the principle of action. When a two.Stroke engine engine starts, the crankshaft begins to rotate. The coupling is attached to the shaft, with which the chain is connected with a sprocket. When the chainsaw works at idle (the speed of rotation of the shaft up to 2700 revolutions per minute), that is, the accelerator trigger is not pressed, the spring presses the friction pads, as a result of which the torque is not transmitted to the drum.

As soon as the saw picks up the tool and begins to increase speeds (maximum to 14000 rpm), the chain begins to move along the bus. This is due to the fact that the speed of rotation of the crankshaft increases. Due to the force of inertia, friction linings (they are also called counterweights) move, and enter into a cloth with the internal walls of the drum. As a result, the drum is moved, which is connected to the asterisk. The rotating star drives the chain.

The principle of operation of the mechanism is simple, which is due to it is not a complex design. If this part comes out of the system, then there will be no chainsaw accordingly. A detailed description of the principle of operation of the clutch mechanism of the chainsaw is described in this material.

Algorithm for independent replacement of the clutch drum with an asterisk

The design of its crown is determined by such an important parameter as choosing a chain by step.

  • The installation of a new part on a worn sprocket reduces the smoothness of its stroke, forced wear, initiates the risks of its break and create a traumatic situation.
  • There is also an increase in operational loads on the engine and elements of the tools of the tool.
  • A similar process takes place when installing old stretched circuits on the tire, the diameter of which is adjusted to the size of the tire by removing part of the links.

Experts also do not advise arbitrarily change the size of the stars. The experiment can adversely affect the engine resource and the cinematics of the tool as a whole.

The safety of sawing work of various degrees of complexity is ensured by the effective operation of the emergency stop brake and devices that block the scattering of the ends of the chain in case of accidental breakdown. In any embodiment. The most reliable prevention of emergency situations, maintaining a chainsaw in good technical condition.

When replacing clutch, we do not recommend using metal or plastic objects as a stopper. The former can scratch the cylinder, the latter can litter it.

  • We turn on the brake of the circuit stop, remove the protective cover and dismantle the saw headset;
  • We remove dirt, sawdust, dried lubrication, if any;
  • Remove the air filter and the nursing;
  • With the help of a candle key, remove the candle;
  • Rotating the crankshaft, we bring the piston to the top point, then take it by 6-9 mm;
  • Rope, with a diameter of 7-8 mm, stop the piston in the upper position;
  • We unscrew the nut on the clutch with a special key-shooter.

Easy clutch removal on most chainsaws

Most of the moving parts of the chainsaw have right.Sided rotation. Therefore, in the nut on the clutch, the left thread is provided. Remove the lid, you need to rotate the key by clockwise. It is forbidden to carry out this operation with a hammer and a chisel. You will have a limit!

  • Remove the lid and leading star. Diagnose the malfunctions and evaluate the wear of the details. We evaluate the condition of the needle bearing;
  • If necessary, we replace the parts with new ones (the leading star needs this most often);

The installation of the clutch system of the chainsaw is carried out in the reverse order, however, you should pay attention to some features.

In addition to the basic rules of work told in the previous section, it is worth remembering some nuances when replacing clutch. Use only original manufacturer details. This is the key to a long and productive work of the tool. Clutch thread on all chainsaws of any manufacturer is always the left. Before removing the coupling, carefully remove all dirt and dust from the tool so that it does not get inside.

The leading asterisk for the chainsaw of any power category is made of special steel, processed according to special technology, so repairing the part with arc welding and subsequent milling is not possible.

The price of the part itself is several times less than the cost of its replacement in service structures.

  • Advantages of independent repair of the drive device in lower costs of funds and time.
  • If there is an appropriate tool with work, you can manage for a fairly short time interval.

The technology for replacing the leading star provides for the implementation of the entire amount of work in a given sequence:

  • Dismantling the headset and air filter;
  • Installation in the candle hole of the piston lock;
  • Clutch clutch and at the same time with a dentate drive are removed by means of a puller, you can unscrew the asterisk only clockwise.

If the separator is detected, the breakdowns of springs of the centrifugal mechanism and fists are recommended to replace the entire kit.

If the condition of the removed parts is not in doubt, the entire mechanism is collected in the reverse sequence. To reliable fixation of the clutch on the crankshaft, it is enough to turn the piston stopper, pull the standard starter and return it to its original position.

Amateur masters should be warned against simplifying the requirements of repair technology and saving funds on the installation of relatively cheap Chinese components.

The quality of the work done is guaranteed by attention, accuracy, compliance with the sequence of all dismantling and assembly operations.

How to change a clutch on a chainsaw?

The owners of the chainsaws probably asked more than once. How to change the clutch on the chainsaw? On most models of chainsaws, dismantling and clutch replacement can be easily performed manually by the owner himself, on a small number of models, unscrewing the drum can only be done in the workshop (such chainsaws include, for example, Husqvarna 137 or Partner 351).

disassemble, remove, clutch, change, chainsaw, your

In this review, we will learn how to independently remove and change the clutch on a chainsaw, when to do it and what tools may be needed.

Block: 2/7 | Summer characters: 578

Removing and replacing clutch on a chainsaw. Review, instruction

Chain chainsaws, for various reasons, from time to time need repair. Of course, you can contact a service workshop or to experienced mechanics. However, many problems can be eliminated at home, having only a minimum set of skills and tools.

Answering the question of how to remove the clutch from the chainsaw, we note that this is not a complex operation, if you adhere to the technology of disassembly exactly.

The owners of the instrument may face certain difficulties if the chainsaws are used for a long time, and the clutch details have cooked to each other.

However, in this case, the disassembly can be done with your own hands.

Clutch malfunctions

Malfunction Possible reason The method of elimination
The chain is spinning without stopping, with any adjustments of the carburetor. The engine works unstable. The spring burst in the drum. Remove the spring and replace with a new one, or put a new knot.
The chain spins almost constantly, making extraneous sounds. Cooking fist. A spring flew. Replacing the entire node
When working, the chain slips. Clutch wear Replacement of the node

The reasons why you need to disassemble clutch:

  • Faulty or bursting spring;
  • As a result of the loads on the chainsaw and wear of the parts, the spring left its place;
  • Chips on the clutch plate;
  • Wear of the details.

Clutch replacement

When replacing clutch, we do not recommend using metal or plastic objects as a stopper. The former can scratch the cylinder, the latter can litter it.

  • We turn on the brake of the circuit stop, remove the protective cover and dismantle the saw headset;
  • We remove dirt, sawdust, dried lubrication, if any;
  • Remove the air filter and the nursing;
  • With the help of a candle key, remove the candle;
  • Rotating the crankshaft, we bring the piston to the top point, then take it by 6-9 mm;
  • Rope, with a diameter of 7-8 mm, stop the piston in the upper position;
  • We unscrew the nut on the clutch with a special key-shooter.

Most of the moving parts of the chainsaw have right.Sided rotation. Therefore, in the nut on the clutch, the left thread is provided. Remove the lid, you need to rotate the key by clockwise. It is forbidden to carry out this operation with a hammer and a chisel. You will have a limit!

disassemble, remove, clutch, change, chainsaw, your
  • Remove the lid and leading star. Diagnose the malfunctions and evaluate the wear of the details. We evaluate the condition of the needle bearing;
  • If necessary, we replace the parts with new ones (the leading star needs this most often);

The installation of the clutch system of the chainsaw is carried out in the reverse order, however, you should pay attention to some features

Nuances when installing a clutch system:

On some models of the chainsaws between the leading star and the clutch, there may be a puck, pay attention to which side it stands to the engine; Some oil pump drives are equipped with a special spring (mustache), which is responsible for the transmission of rotational movement from the leading star to the oil pump

It is important to adjust the spring so that it falls into the appropriate groove on the asterisk case with a free end (mustache), otherwise the saw set will not be lubricated;. Important: after dismantling and assembling clutch, be sure to check the operation of the automatic oil supply system

Important: after dismantling and assembling clutch, be sure to check the operation of the automatic oil supply system

Review

STIHL chainsaw repair overview

disassemble, remove, clutch, change, chainsaw, your

A review of the replacement of the burned clutch of the chainsaw

How to remove the handle from the STIHL 180 saw

To eliminate any of the faults of the drum or leading star, the operator will need to remove the clutch from the chainsaw.

The procedure should be as follows:

  • First you need to loosen the chain and remove the entire saw set;
  • Next, the operator must dismantle the air filter and the plastic cover of the standard clutch body;
  • After that, you will need to lock the crankshaft. As a result, it must remain motionless in the process of dismantling of the factory clutch. To block the crankshaft, you can pull out the cover of the starter case and insert 2 small metal bolt into the rotor provided in the device of the ignition system. The second option is to dismantle the candle with the subsequent lowering of the piston and its lock. Most often, a skein of thin rope is used for this;
  • Then you can proceed to the dismantling of the clutch itself. To do this, a tool from a set of saws or a key for servicing a corner grinder must be carefully unscrewed along the clutch along the clock. In this case, it is important not to disrupt the mechanism from the thread;
  • Next, you need to dismantle the drum and the leading star;
  • At the next stage, you will need to install a new clutch and tighten it on the thread against the stroke of the watch of the clock until it stops. To do this, you need to block the crankshaft again. Otherwise, there will be a risk of a breakdown of the starter located at the opposite end of the crankshaft;
  • After that, you need to collect the clutch on the chainsaw and finally tighten it. To do this, you will need to move the handle of the inertial brake from yourself, start the power supply of the chainsaw and quickly return the brake lever to the opposite position.

Quite often, replacing the chain coupling, including Champion 242, is explained by the fact that this part may burst. And the reason is simple.

All modern chainships are equipped with a chain brake device, and in most models it is controlled using a tape located on the tire and a chain surrounding the clutch drum.

If the user does not turn off the chain brake over time, but, on the contrary, continues to press the throttle of the throttle on the trigger, the tire cover and the chain will be melted, forcing the clutch drum burst. In this case, the repair of the chainsaw is inevitable.Consider the replacement of the clutch drum on the example of Champion 242 chainsaw, which is fully executed.The clutch drum is replaced in several stages, we will consider each of them:

  • Remove the air filter lid.
  • To unscrew the nuts holding the structure of the coupling on the crankshaft, it is necessary to stop the engine. To do this, remove the cover from the candle, turn it and insert the rope into the hole for the candle.

After that, gently pull the starter handle to remove the remaining space in the combustion chamber. It is not recommended to use a metal plug, since the crankshaft can be turned during the unscrewing of the nut.

In this case, the piston will take a rope, and the stopper will break its bottom.

Tips: how to remove an asterisk from a chainsaw

Replacing echo cs-440 chainsaw clutch drum

Many tools need constant substitution of consumables. It applies and saw. 3 independent adjustment of the carburetor carburetor on the chainsaw Partner 350. How to remove a clutch to remove the clutch on a chainsaw, with my Chinese.

That is why the question of how to remove the star from the chainsaw, which is often called the clutch disk or centrifugal mechanism, very lively among home masters.

In this regard, you need to see what is called an asterisk and for what purposes it is needed.

The clutch drum called an asterisk is an integral part of the chainsaw.

The process of repairing the clutch coupling is composed of such operations:

  • Dismantle the chain headset, the airfilter shutters and the clutch itself;
  • Stop the crankshaft. For this it is enough just to unscrew the spark plug;
  • Unscrew the clutch with a special key with strong movements of software or counterclockwise (different models of saw can have either the left and right threads). Usually, a tool in order to remove the coupling is included in the completeness of chainsaws;
  • Proceed to the disconnection of the drum and stars;
  • If, when examining the clutch couplings, one or more cracked springs were found (there may be several, for example, the Husqvarna chainsaws. 3.). We need to replace the spring that failed, with a new one;
  • Collect clutch on a chainsaw, put it in place and screw it up. Do not forget that the crankshaft should still be motionless;
  • Aggregate the removed parts in the sequence, reverse disassembly;
  • Fix the coupling. Send the handle of additional braking forward, start the device and carefully remove from the inertial brake.

Dismantling the chainsaw of Stihl Stihl MS 180. Removing a flywheel, ignition module and clutch couplings.

In order to remove the clutch from the chainsaw, you should first be careful and careful so as not to damage anything superfluous.

This operation should be performed according to this algorithm:

  • Remove the saw and chain. To do this, unscrew the manual brake of the chain, pulling the handle over yourself. Then dismantle the tire, remove the pollution.
  • Remove the casing from the air filter and clutch.
  • Blok the crankshaft. This is a mandatory procedure to avoid its rotation during operation. To do this, unscrew the spark plug, fix the piston at the lower “dead” point and put the rope into the candle hole.
  • Using a special key, remove the clutch. You need to unscrew it clockwise, because it usually has left thread.
  • Replace damaged parts. Collect the clutch of the chainsaw should be in the reverse order in which the analysis was carried out.

At this CHAMPION saw, we excluded the game of the leading star and changed the main star. The cause of the breakdown is the chain.

One of the most important details of any model of the device is clutch. This mechanism requires constant monitoring of the correct operation. Periodically it must be removed to check and the necessary repair. How to remove a clutch on a chainsaw of any brand correctly and how it works to figure it out below.

What does the adjustment of the clutch of the chainsaw mean and how to perform it

If you have heard that the clutch on the chainsaw needs to be adjusted, then the question probably arose how to do it? The clutch does not need to be adjusted on a chainsaw, since it works automatically, unlike devices of old stamps of tools. It is impossible to regulate the compression force of the spring or springs, and if this part was damaged, then it should be replaced.

Когда осуществляется установка муфты бензопилы на место, то при этом также не требуется ничего регулировать. The tightening of the coupling is performed until it stops using a special key and a staging piston in the cylinder. On some models of chainsaws there is a puck or prostate bar. It can be between the rampart and the star or drum and an asterisk. This washer is adjusted to the centering of the stars with the tire. If there is such a puck on a chainsaw, then it must be put in its place when carrying out work on repair or replacement of the mechanism.

How the clutch mechanism on the chainsaws of the Ural brand and friendship is removed and configured, is shown in detail in the video video.

Summing up, it should be noted that the clutch on the chainsaw plays an important role. This mechanism not only ensures the transfer of torque from the engine to the circuit, but also protects the motor from premature failure. Imagine the situation when the asterisk is rigidly connected to the crankshaft. When the chain is seized in the sawed material, there will be a simultaneous wear of engine parts, stars and chains. Understanding the purpose and principle of operation of the mechanism, it is always necessary to monitor its serviceability, and at the first signs of the breakdown to remove, repair or even replacement.

How to remove clutch on a chainsaw: step.By.Step instructions, recommendations for different models.

Clutch. One of the main mechanisms of modern chainsaws. It is required to transfer the rotating moment to the asterisk of the saw headset, protects the engine from overloads and breakdowns. Over time, this element requires planned preventive cleaning or even replacing. You can remove the clutch at home, for this, at least in general terms, the features of its work and the design of a particular saw model should be understood in general.

All the latest generation chainsaws are equipped with a centrifugal type adhesion mechanism. The coupling transfers torque from the crankshaft of the engine engine to the saw. The element works exclusively in automatic mode, which helps to prevent excessive voltage of the internal combustion engine. Basic clutch elements:

  • Drum. Can have a removable or fixed asterisk, is a transmitted mechanism.
  • Friction linings (counterweights). They move under the influence of centrifugal force, there is always a smooth connection with the drum.
  • Springs. They provide tight pressing to the crankshaft.

After the start of the chainsaw, the crankshaft set in motion. The coupling is attached to it, from which the leading star of the chain leaves. When working in idle, friction linings are clamped, thanks to which the torque is not transmitted to the drum. After increasing speeds, they move and set in motion a rotating star.

Important! In professional models, a drum with non.Removable stars is installed. This enhances its wear resistance, but increases the cost of repair.

Device and principle of clutch operation

The device of the chainsaw includes the clutch mechanism, which consists of such elements as:

  • Crankshaft;
  • Drive.Type disk;
  • Pressing disk;
  • Protective casing of the mechanism;
  • Squeezed lever;
  • Bearing;
  • Turnpile fork;
  • Carter;
  • Gears;
  • Pipeline;
  • Fasteners.

At minimal revolutions of the power unit, the clutch of the chainsaw is attracted to the center of the shaft with a spring device and does not transmit a rotational moment to the drum. At a time when the engine revolutions begin to reach the indicators in which the torn force exceeds the force of the spring device, the frictional segments begin to press against the inner surface of the drum mechanism, which helps to rotate the drum of the Chinese chainsaw.

In the course of this, a sprocket of the leading type begins its rotation, which is responsible for moving the saw chain.

Device and principle of clutch operation

Modern chainsaws are equipped with centrifugal clutch couplings. This means that their work entirely depends on the torque of the motor, which at a particular moment in time gives out a saw. Its main constructive elements are:

The principle of operation is as follows. When the saw is launched, the elements that are freely move in the radial direction, with the springs are tightened to the axis of the shaft. In this case, the torque does not enter the drum, which means to the asterisk and the guide. At the moment when the centrifugal force prevails over the power potential of the springs, the adhesion elements are weakened and compressed at the inside of the drum, initiating it. Together with him, the rotational cycle passes to the asterisk and the tire-like headset itself.

The main advantage of the clutch of this type is its slippage when the cutting part is suddenly inhibition, which does not stop the engine. As a result, the “heart” drank. The engines remain intact and preservation.

In order to successfully disassemble this node, you will need a clutch pulp by a chainsaw. But before we consider how to use it, we will study the features of the device of this functional part of the power unit.

Please note that when developing modern chainsaws, manufacturers most often resort to the use of a centrifugal clutch clutch. And this suggests that the tool and its work depend on the stock of the spinning moment that the equipment issues here and now

The main constructive details of this node include:

As for the principle of work, then everything is simple here.

  • As soon as the chainsaws are transferred to the operating mode, the clutch springs are delayed all freely moving elements (move in the radial direction) towards the axis.
  • At this moment, the torque will not be transferred to the guide with an asterisk.
  • As soon as the centrifugal force becomes higher than the power potential of the spring, all the freely moving attracted elements are weakened and squeezed inside the drum, which will run it (it will begin to spin).
  • Rotation will go to the guide tire and the main star.

Pay attention to the fact that this type of clutch coupling will work automatically. Its functioning depends on the number of engine speeds

The movable elements inside the drum will be attracted to the shaft (its center) even at minimal speeds. This plays an important role in preventing serious causing tools. When this mechanism fails, then there is a need to understand how to remove the clutch on a chainsaw.

The device of the chainsaw includes the clutch mechanism, which consists of such elements as:

  • Crankshaft;
  • Drive.Type disk;
  • Pressing disk;
  • Protective casing of the mechanism;
  • Squeezed lever;
  • Bearing;
  • Turnpile fork;
  • Carter;
  • Gears;
  • Pipeline;
  • Fasteners.

In the course of this, a sprocket of the leading type begins its rotation, which is responsible for moving the saw chain.

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