Replacing the clutch spring of a trimmer for Husqvarna grass. Maintenance

How to install a spring on the clutch of a trimmer for grass

Before starting working with a saw, you need to complete several tasks:

  • Read the instruction manual.
  • Collect the saw part in accordance with the recommendations of the manufacturer.
  • Seal with oil compartment automatic lubrication.
  • Run the engine.

When using a chainsaw, the manufacturer recommends putting on protective clothes and headphones. You can’t use the saw with poor health, after drinking drugs and alcohol. It is forbidden to work in conditions of high humidity.

The note! During operation of the engine, there is a noise above 100 dB, which is dangerous for the human ear. With prolonged work, a violation of coordination of movements, white spots and hearing impairment may occur. In order to avoid these consequences, it is recommended to use special headphones.

When refueling or refueling, the chainsaw engine must be stopped. You should carefully handle fuel, it easily ignites.

How to replace or put a starter spring in place?

If everything turned out to be in order with the rope at the starter, the suspicion falls on the coil itself. It is driven by a strip spring rolled into a roll. To change the spring, certain steps should be taken.

  • Remove the starter from the lawn mower.
  • Remove the starter coil.
  • Unscrew the main bolt holding the pulley on the case.
  • Pull the exciting antennae and the spring, the strip spring is almost completely straightened or folded by rings of a larger diameter.
  • Hold it in advance.
  • Check if the spring is valid (there may be rusty stains, breaks, etc. D.). If the hooks at its ends are cut off, the new ones will not be bent. high.carbon steel breaks when trying to bend it. Weakened hooks are suitable for easy bending.
  • Make sure that an auxiliary (ordinary) spring with washers in place. These details protect the coil frame from the end of the main spring with the ends. If the washers and the spring are broken, but there are no new ones, do not screw the coil bolt hard, but follow it. it can unscrew and get lost.
  • If the main (flat) spring is damaged, insert the same new. Put the hook at the end of the spring in its place and bend it, inserting the turn behind the turn into the space where it should be and should be.

The rewinding of the spring is performed in a minute. Oknovka in this action is gained quickly.

How to replace or put a starter spring in place, watch in the next video.

Clutch device, principle of operation

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:

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.

It is on this principle that centrifugal clutch works, which has several advantages in comparison with its other varieties. Among them, the lack of engine stop during the sharp braking of the cutting element (that is, the clutch slips). Due to this feature of the mechanism, the main node of the chainsaw remains unharmed.

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 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.

How to remove clutch on a chainsaw.

With the task of unscrewing the clutch clutch on a gasoline saw, when you need to replace the leading star, get to the oil pump or with a complete disassembly of the chainsaw.

There is nothing complicated if you know how. To get started, naturally you need to remove the cover of the brake of the quapi, which fixes the tire. To do this, you first need to pull the brake handle on yourself, making sure that the brake tape does not apply to the clutch cup. Then loosen the two nuts holding the lid, loosen the mechanical tensioner of the chain. After that, finally unscrew the two nuts and remove the brake brake lid.

Remove the tire and chain, we see the centrifugal clutch of the chainsaw.

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After that, it is necessary to lock the piston in the cylinder. This requires such a device.

Cord with nodes, to stall the piston with a crankshaft.

Next, twist the candle, take the flashlight and shine into the candle hole. Turning the crankshaft using the starter cord-we look that he was moving up, blocked the output window of the cylinder.

This is necessary for the piston not to cut the cord, which will serve as a stop. Pour the cord into the candle hole, something longer, the better and slightly rest the piston using the starter.

Now you can unscrew the clutch clutch. The thread on it is left, so you need to unscrew clockwise. Often there is a hint with an arrow on the three.beam nut, in which direction you need to twist. The difficulty also lies in the fact that the clutch clutch is planted on a threaded sealant, therefore it happens that unscrew it no. If there is a construction hairdryer, you can first warm up the center of the coupling. We put an instruction on one of the rays of the clutch nut, and several times, we sharply hit the mentor with a hammer. The infusion must be set as much closer to the clutch center, if you put it on the edge, you can break off the beam of the nut.

After several beats of the hammer, the clutch of the chainsaw, how-right is unscrewed, and then it can be unscrewed even with your hands. If it goes tight, you can take a regular key to corner grinder, and twist it.

After removing the clutch basket, it becomes possible to replace the leading star (it can be either whole together with the drum and separate, floating), evaluate the condition of the needle bearing, or gain access to the oil pump.

Assembly is carried out in the reverse order. Be sure, you need to apply a little threaded latch on the thread, it is better to red, for stiff connections, so that the clutch does not unscrew spontaneously.

Before winding the clutch, it is better to stretch the rope from the cylinder, turn the crankshaft again, but already in the opposite direction until the final window is overlapped, and pushing the cord in a new way. Although, as it was right when twisting, the crankshaft rests itself with the help of Magneto hooks on the starter. Twist the clutch of the chainsaw, you need to. It is desirable to launch a chainsaw after the thread lock is grasped, and always with the brake lid installed. If this is not done, then the clutch clutch can spontaneously turn off on the move, fly away and lead to injuries. This can happen if you disperse the engine to high speeds and then drown out. In such a situation, parts of the flying couplings can fly out within a radius of 15 or more meters, so observe safety precautions!

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Description and characteristics of gas stations 128r

To quickly turn on the device even after a long period of inaction, a primer for pumping fuel and the Smart Start system are built into it. The maximum width of the possible processing is 45 cm. Husqvarna 128r. A gasoline trimmer for grass with a straight bar and professional handles made in the form of bicycles.

The weight of the device without fuel, installed cutting parts and protective casing is 4.8 kg. Thanks to this, the Husqvarna gasoline pump 128R can be used for a long time without interruptions. The fuel tank of a gasoline trimmer for grass is made of white plastic so that it is easier to control the amount of fuel remaining in it.

  • a knife with 4 blades for hard and high grass or shrubs;
  • Trimmer head for grass (semi.automatic);
  • mounting belts for 2 hands;
  • a set of keys;
  • bicycle pen;
  • Operating and maintenance manual;
  • protective covering;
  • not assembled rod.

The trimmer fishing line is used to remove only small grass.

The cost of repairing trimmers Husqvarna

The final cost of the necessary repair of the Husqvarna trimmers largely depends on the for the spare parts and is agreed with the customer by phone, after the diagnostician conducted by the wizard.

Name of the repair of gasoline trimmers Husqvarna Service cost,
Carburetor adjustment 1900
Replacement of the starter 700
Starter repair 900-1300
Replacing the spark plug 100
Clutch replacement assembly 1200
Replacing the carburetor 1700
Replacing the ignition coil 900
Replacing the gearbox 400
Replacing the cutting head 400
Ignition adjustment 700
Replacing the air filter 100
Replacing the drive shaft 900
Replacing the flywheel 1100
Complex maintenance of Husqvarna gasoline trimmers (work) from 1500 (from the model)
Name of the repair of electric trimmers Husqvarna Service cost,
Replacing the gearbox 400
Replacing the cutting head 400
Replacing the drive shaft 900
Replacing graphite brushes 500
Replacing the adapter 700
Replacing the power cable 400
Engine replacement 1300
Replacement of a trimmer casing for grass 300
Complex maintenance of Husqvarna electric trimmers (work) from 1100 (from the model)

Husqvarna is the foundation and development of a well.known brand

Now the world.famous Husqvarna brand was founded in 1689 in the Swedish town of the same name. At the beginning of its many years of history, then a small enterprise specialized in the production of weapons for the Swedish army then.

In 1867, radical changes took place in the company’s work. In addition to the production of rifles and cartridges for them, the brand began the active development of sewing machines and wood furnaces. A little later, the company managed to establish the release of the first models of a hand.made garden tool.

Today the Swedish company specializes in the production of high.quality garden equipment. Among the products of the company there are different models of chainsaws, snowproofers, air vents, lawn mowers.

Against the background of the variety of Husqvarna products, electric and gasoline braids for grass are released. They combine high reliability, endurance, long life. Each trimmer for grass Husqvarna is able to withstand prolonged loads, which makes the Swedish technique a reliable assistant when leaving on large house sections.

Clutch replacement on a chainsaw

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.

The most common problems

The most common faults of the Husqvarna chainsaw include:

  • incorrectly adjusted carburetor;
  • ignition block malfunctions;
  • fuel block malfunctions;
  • unresolved adhesion mechanism;
  • oil system malfunctions;
  • Incorrect work of the starter.

These problems lead to the occurrence of a chainsaw in the work.

The saw does not start or stall after pressing the accelerator. Possible reasons are the starter breakdown (in this case it will not be repaired, but replaced by a new one), pollution or breakdown of the elements of the ignition system, a malfunction of the candles or coil. The candles are most often out of order. Another option is difficulty in supplying fuel, the most likely clogged fuel filter or pierced fuel hose from tank to carburetor. Blockage of the gas tank sapoon is possible.

Difficult to launch, the appearance of white smoke. The reason for these malfunctions is an incorrectly adjusted carburetor that supplies too little or too much fuel mixture, or prepares it in an incorrect proportion. A sign of this is white smoke from a motor compartment.

Scrolling the chain during operation of an idle. Causes of the malfunction: an unhealthy or failed clutch mechanism, an unresolved stroke at idle, air leaks in a carburetor or crankcase.

Problems with the lubrication of the saw chain. Expressed in the absence of lubrication or the output of the chain outward in the dirty state. The causes of this malfunction are different. a breakdown of the oil pump, blockages in the saapun (holes in the oil tank cover) with an oil channel or filter or a malfunction of the gear of an oil drive.

The device of the chainsaw starter

The principle of operation of the starter for the chainsaw is as follows. A handle is installed in the groove of the case, through which the cable is missed. If the handle is sharply lifted, the cable is stretched, and introduces the drum of a ratchet that transfers the movement to the drum with the slots provided for the shaft. In this case, the crankshaft makes several revolutions, and the working mixture in the space between the piston and the cylinder head is compressed. Accordingly, when lowering the handle, the contact between the ratchet and the slots is lost, and the shaft stops.

With an increase in the volume of the engine, the required amount of fuel-air mixture required for its subsequent ignition is also growing, so the number of jerks for the starting cable for large power saws increases. Therefore, in order to accelerate the return of the drum, baked return springs made of steels with high elastic properties are used.

The relief of the launch of the chainsaw is realized in the following ways:

  • Preliminary enrichment of the working mixture, for which there is a special damper in the design of the carburetor.
  • By installing an automatic decompression valve, which provides a decrease in the working pressure in the chainsaw cylinder.
  • By installing an additional spring, which during the movement of the cable facilitates the spinning of the crankshaft.
  • The presence in the design of some chainsaws (for example, Partner S, Maxcut, etc.) the primer. the pump that provides preliminary pumping of the fuel.

Spring repair

The procedure for repairing the start of the launch system:

  • Dismantle the starter from the tool.
  • Remove the protective cover.
  • Wind the cord from the end of the pulley to avoid scrolling the mechanism.
  • Pass the second end of the cord in the hole of the protective cover.
  • Pull the cord 17-20 cm to check the turn of the pulley of the spring mechanism.
  • Check the operation of the spring after stretching and releasing the mechanism.
  • Unscrew the circle circle from the side of the generator, removing 3 fasteners.
  • Demolish the pulley and cord.
  • Check the condition of the parts for wear and the presence of damage and cliffs. If the cliff is small, then you can eliminate the defect by welding.

Operational features

When operating the chainsaw of Husqvarna 142, its features must be taken into account. This is a simplified semi.professional model not designed for everyday long.term use. The main scope of the Husqvarna chainsaw is gardening work and housing and communal services-pruning of large branches, rolling of dried trees, etc. P.

Power installation. a two.stroke carburetor engine with a working volume of 40 cm3 and a power of 2.58 liters. With., with air cooling. It works on a gas-oil mixture in the ratio of gasoline to the oil like 50: 1.

During operation, Husqvarna branded oil is required, but in the absence of that, the manufacturer allows the use of any high.quality machine oil, but in another ratio. 33: 1.

Husqvarna chainsaw is distinguished by a minimum of controls. there is only a switch, a lever of air damper position and a combined throttle control lever. Primer, t. e. The fuel leak button, this model does not have, which complicates the launch, but facilitates the elimination of malfunctions.

A feature of the Husqvarna chainsaw is the recommended mode of its operation. at high, not low speeds.

Operational qualities allow you to saw dry and raw wood of various species, including such solids as oak and beech. In general, the Husqvarna 142 chainsaw is characterized by high build quality, unpretentiousness and reliability. Faults in work rarely arise and are mainly related to improper adjustment of the carburetor or failure of consumables.

Removing and disassembling the starter, replacing broken parts

To repair the starter of the trimmer for the grass, you will need to disassemble it first, and then collect it. This process is not a particularly difficult occupation. For work, you will need a screwdriver with the tip of the desired shape.

Parsing the starting node

They disassemble the launch mechanism in order to install new parts instead of broken in the following sequence:

  • spin a screw with a screwdriver, fixing the pulley with a starter lid;
  • take out a spring and antennae;
  • Remove carefully with the pulley (you need to unscrew the head or work, having dressed the glasses and gloves before);
  • determine why the launch mechanism has broken;
  • If the spring collapses almost completely, then it is replaced;
  • When the spring exits from the hook, it is installed in the original place, bending the antennae before this (the photographs show the laying process);

After the spring plate is installed inside the groove, it is carefully twisted. To change the spring, you should work carefully and accurately: it can, under the influence of the effort caused by the installation of it in place, accidentally burst

Even if you carefully remove the video, then the spring strip flies very quickly from the coil and can injure your hand with its sharp edges

To change the spring, you should work carefully and accurately: it can, under the influence of the effort caused by the installation of it in place, accidentally burst

Even if you carefully remove the video, then the spring strip flies very quickly from the coil and can injure your hand with its sharp edges

Starter assembly

The assembly of the starting node is carried out in a number of stages:

The coil is turned over, installing it so that the spring bend exactly stands into the groove of the case, as in the photo below;

When making the stated manipulations, it is necessary to lay two goals. If this is not done, then the spring over time damage the plastic cup, and when it is pulled. Because of this, a feeling appears, as if the spring had flown. To eliminate such a drawback, you need to install this part of a larger length or an additional goal.

When such spare parts are absent, you can just unscrew the screw a little, and the starter knot will begin to work without shaken. But this option is temporary. it is better to repair qualitatively as quickly as possible.

Spring tension

After installing the spring, it should be pulled. The following actions are performed for this:

  • Remove the handle from the starter cord;
  • Then the rope is inserted into the coil groove;
  • They stretch the spring, rotating the coil in the direction opposite to the clock of the clock arrow (reviews);
  • make the desired number of revolutions specified in the instructions for the use of the trimmer model used and the corresponding length of the cord used;
  • At the very end, the rope is threaded into a hole designed for this, located in the starter cover;
  • put the handle in place, fixing it with a node.

If after the repair the spring continues to fly, then you can get rid of this in the following ways:

How To Replace The Clutch On A Honda Brush Cutter || Brush Cutter Clutch Replacement || Clutch Assy

  • Squeeze the suitable piece of the plate into the groove at the location of the spring hook;
  • drill holes on two sides of the groove in the coil, into which the spring hook is inserted and fix it using a wire.

Replacing a torn cord

A torn rope is replaced in the following sequence:

  • The old cord is removed;
  • choose a suitable rope (thickness and length);
  • Having reached it through a special hole in the coil, a knot is tied;
  • Sprinkle a spring, producing the required number of revolutions;
  • Fix the pen.

It is easy to assemble a starter on a trimmer and wound a spring, only you should do it carefully and with caution. For different models, the gas tanks of the launching mechanisms are the same, so they are repaired in a similar way

In this case, there are some nuances associated with their constructive features.

Removing and disassembling the starter, replacing broken parts

To repair the starter trimmer for the grass, first it needs to be disassembled, and then collect it. This process is not particularly complicated. You will need to work the shape of the screwdriver.

Everything should be done carefully, observing precautions, especially so that the spring does not injure the owner in case of accidental departure

Starting analysis

Disassemble the starter mechanism to install new parts instead of broken in the following sequence:

Unscrew the screw that attaches the pulley with the starter lid using a screwdriver; Remove the spring and antennae; Carefully remove the pulley (you need to turn your head or work, after putting on your glasses and gloves); Determine why the trigger worked; If the spring fell apart almost completely, it is replaced; Когда пружина выходит из крючка, она устанавливается на прежнее место, предварительно сгибая антенну (фотографии показывают процесс установки);

After the spring plate is installed inside the groove, carefully tighten it

Read it yourself

To change the spring, the work must be performed carefully and accurately: it can accidentally explode under the influence of the force caused by its bringing into effect. Even if you carefully delete the video, the spring tape is very quickly torn off the coil and can injure the hand with sharp edges.

Immediately put in place a spring plate does not always work. This often slips, so attempts should be repeated to achieve the desired result.

Starter assembly

The assembly of the starting installation is carried out in several stages:

The coil turns over, installing it so that the bend of the spring accurately fits into the groove of the case, as in the photo below;

When making the above manipulations, it is necessary to put two goals. If this is not done, the spring will ultimately damage the plastic cup, and when it is removed, jamming will begin. This makes you feel that spring has come. To eliminate this drawback, it is necessary to install this part of a larger length or an additional goal.

When such details are not enough, you can just unscrew the screw a little, and the starter assembly will start working without fixing. But this option is temporary. It is better to repair it as soon as possible.

Spring tension

After installing the spring, tighten it. To do this, follow the following actions:

  • Remove the handle from the starter cord;
  • Then the rope is inserted into the groove of the coil;
  • The spring is delayed by the rotation of the turn in the opposite direction clockwise (winding);
  • Make the required number of revolutions specified in the operating instructions for the used trimmer model for grass, and the corresponding length of the cord used;
  • At the very end, the rope is lowered into the hole provided for this, located in the starter cover;
  • Place the handle in place by fixing it with a node.

If after the repair the spring continues to fly, you can get rid of it in the following ways:

  • Insert the corresponding piece of the plate into the groove at the location of the spring hook;
  • Drill holes on both sides of the groove in the coil, into which you need to insert a spring hook and fix it with wire.

Replacing a torn cord

A torn cable is replaced in the following sequence:

  • The old cord is removed;
  • Choose a rope of a suitable size (thickness and length);
  • Having passed it through a special hole located in the coil, tie a knot;
  • Spring valve producing the required number of revolutions;
  • Fix the pen

It is better to tighten the spring plate with Partner so that the edge of the cord does not twist inside the starter mechanism.

It is not difficult to assemble a starter on a trimmer and wound a spring, but this must be done carefully and carefully. For different models of gasoline engines, the breakdown of the starting mechanisms are the same, so they are repaired the same

However, there are some nuances associated with their constructive features.

Repair of the bar motorcosa. Primary diagnosis of a trimmer for grass.

The proper operation of the engine and the lawn mower in general is affected by a huge number of factors that are usually interconnected. If you fail to determine the malfunction, contact the proven service center.

I would like to note that before proceeding with disassembly and serious repair, you should check elementary consumables. These “little things” often affect work and, perhaps, repair of a trimmer for grass will cost “small blood”, so to speak.

replacing, clutch, spring, trimmer, husqvarna

Spend of the ignition-lack of soot, electrode clearance (0.5-0.6mm-or according to the instructions), good spark

Fuel filter. lack of pollution, mechanical damage, good throughput. Periodic replacement according to the maintenance schedule in the operating instructions

Air filter. lack of sawdust and pollution. Periodic cleaning in soapy solution and purge under high pressure. Replacement of the air element according to the instructions for the expulsion

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Replacing the omentum of the Chinese trimmer for grass from the side of the starter:

We unscrew the spark plug, block the movement of the piston with a stopper. Remove the starter (p.31). 13mm with a head of 13mm we unscrew the starter ratchet (p.35). Traces of a gas mixture on the omentum indicate its necessary replacement. With a thin flat screwdriver (awl, or any similar object that is at hand) we remove the old oil seal (p.36), pry it with a screwdriver from the side of the crankshaft and remove it.

We apply a small amount of oil on the inner surface of the new omentum before installation (you can use oil, which is used to prepare a gas station)

We blow out and degrease the seat under the oil seal, evenly install a new oil seal.

Replacing the oil seal of a gasoline trimmer for grass from the side of the flywheel:

We unscrew the spark plug, block the movement of the piston with a stopper.

For convenience, remove the crankcase cover (p.58) unscrewing 4 screws (p.61)

Unscrew 2 clutch mounting screws (p.57) with washers (p.56), remove the clutch assembly and the washers under it (p.53)

Unscrew the nut (p.52) flywheel (p.51), but not to the end. Not a strong blow to the nut “knock him off the crankshaft”. Unscrew the nut, remove the flywheel and the veneer. We will examine the surface of the oil seal. traces of moisture, or wet pollution, scuffs and other damage on it are a signal to its replacement.

With a thin flat screwdriver (awl, or any similar object that is at hand) we remove the old oil seal (p.50), pry it with a screwdriver from the side of the crankshaft and remove it.

We apply a small amount of oil on the inner surface of the new omentum before installation (you can use oil, which is used to prepare a gas station).

Husqvarna 525 Disassemble & Fix

Replacing the seals of the Chinese trimmer for grass.

One of the main causes of air leaks into the engine are crankshaft oil seals. In general, this problem is the most common on Chinese trimmers, and in some cases, seals begin to pass the air in the first year of service. All the fault of low.quality rubber products of such mowers, well, no one has canceled natural wear.

Essle for different sizes were installed on both sides of the crankshaft (12227mm small and 15307mm large). You can safely sin on the seals if it begins to “snot”. Another indicator of their malfunction is floating turnover when working for “hot”. Next, we will consider in detail the process of replacing.

Do.it.yourself repair

You can repair Champion 137 both in the service center and yourself. Typical malfunctions of this model are as follows:

  • lack of sparks;
  • cessation of fuel supply;
  • malfunctions of the carburetor (blockages, defects of the nozzle valve, defects of the main chamber and the fuel pump);
  • air leaks into the crankcase through gaskets or seals;
  • Carburetor depressurization.

In the presence of a certain experience, you can diagnose and eliminate the malfunctions yourself.

If the chainsaw for some reason does not hold or is stifling at idle, this is the first sign of air leaks to the crankcase or carburetor. You can’t work with a saw with such a malfunction, t. to. Next will follow the overheating and jamming of the engine.

Why luftite clutch basket?

The backlash of baskets is possible for 2 main reasons.

  • The threads on the shaft are torn, the landing neck of the shaft or the internal landing hole on the clutch itself broke. In such cases, play (hangs, swaying) the entire basket relative to the landing shaft. The shaft is motionless (not play).
  • The crankshaft bearing crashed, the backlash appeared on the most landing shaft. At the same time, the basket itself relates to the shaft remains motionless.

In all such cases, except for one, the overhaul of the engine is required with complete disassembly, replacement of the bearing or the entire crankshaft. The exception is the case when a landing shaft, a bearing, a crankshaft, the thread is working, but broken, erased or worn out the parts of the node. In this case, the crankshaft and the bearing with complete disassembly of the engine are not required. Only the clutch details change or the entire basket is completely.

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