Change the sprocket on Husqvarna chainsaw. Replace the star with a chainsaw • CIMFLOK.COM

How to remove and change a leading asterisk on a chainsaw

Regardless of the complexity, tasks and frequency of use, all tools need periodic maintenance or repair. Chainsaws are no exception, despite the well.thought.out design and operational characteristics. But, like all the equipment with mobile parts, the chainsaws are susceptible to wear and require periodic inspection. And first of all, such parts include a saw chain, to extend the service resource of which the timely replacement of the star is important. This is what we talk about in this article.

Here you should get a special repair set, in which the presence of a drive star and the bearing is foreseen. Then you should prepare a tool and parts that are useful for work:

universal ward key products of a chainsaw;
Stop piston mechanism of the mechanism (in standard versions it is plastic or iron)
A centrifugal mechanism or clutch (selected depending on the chainsaw model).

During the operation, subsequent acts are carried out:

At first, a saw set is removed, the tire lid nuts are unscrewed by a universal wrench. Remove the lid, the bar and the chain is removed.
Then the air filter is removed.
The saw candle is unscrewed by a universal key. The prepared lock stop is inserted in the bonno, which will allow to fix the position of the piston in the cylinder.
The clutch pulp fits into the universal key socket. Then, with the help of the purchased device, the coupling turns off. All deeds must be done clockwise.
Clutch is removed, freeing access to the inner parts. Now you can delete the star (clutch drum).
Depending on the type of drum, it is examined or inspected. a star or a crown is changed to new. When installing new parts, it is necessary to painstakingly check the condition of the clutch separator. Here you should direct increased attention to the springs of the centrifugal mechanism and fists. If severe wear is found, these parts must also be changed.
If the condition of the details does not cause shakes, all parts of the chainsaw are collected in a revival order. At first, the piston stopper is twisted, the launch cord is pulled, later the cork is screwed again. Such complex acts allow you to clamp the centrifugal mechanism of the chainsaw on the crankshaft.
Using a universal key, the clutch is clamped counterclockwise, in other words, against rotation of the chain.
After that, all nodes and details can be successfully fastened to their initial places.

In order to change the asterisk on the chainsaw, all the work must be done carefully and painstakingly.

Without the presence of special devices, repair work may fail: not only a star or a centrifugal mechanism cannot fall off, and an dust chain.

As can be seen from the information presented, the question is how to remove the star from the saw can be successfully solved without the help of others. How the operation will be performed, it can be done again and again, when the need arises, and attention and accuracy will become the key to perfectly completed work.

The transmission of chains’ chains of at least a design determines the productivity of the tool. Apart from that, the chain will stretch during operation and the teeth of the drive star wear out. The illiterate choice of asteriska will significantly lower the durability of the teeth of the chainsaw, and its incorrect establishment will lead to early wear.

Design features of leading stars

At least some manufacturer in the operating annotation shows a step of teeth. Taking into account the fact that a driven star (created to create the desired tension) is also installed on the saw bus, the step there and there should be similar.

Leading stars of chainsaws can be whole and prefabricated. In the first case, the asterisk contains a hub on which a gear crown is tuned. Specifically such a makar arranged details in Champion chainsaws. The product should be completely removed during replacement, since at home to observe the value of the tights specified at the manufacturing enterprise is almost impossible. And buying a crown separately is also a problem.

In the chainsaws from Stihl or Husqvarna, the replaced crown is located directly on the shaft of the drum, and therefore its replacement does not represent any difficulties.

The wear of the teeth is set according to the following signs:

In places of transition from tooth to hollow there are clearly noticeable radii.
Tooth width is uneven in height.
Metal chips are observed at the top of the tooth.
On the inner surface of the hole in the hub there are numerous bullying and risks (a consequence of poor lubrication).
The groove from the saw tire is noticeable on the asterisk (you need to change the chain).
The chain at the initial moment of starting jams.

In the presence of at least one of the above factors, the leading star must be replaced.

Before starting work (especially if the chainsaw has worked relatively little), it is worth checking the fastening of the saw tire. A screwdriver’s screw moved away or the mounting nuts unscrewed-the guide is already inconsistent with the longitudinal braid fishing lines. He begins to contact not with the center, but with the periphery of the teeth of the leading star, provoking their intensive wear. After the tightening of these elements, the chainsaws are checked: if the backlash is not eliminated, then the star will have to be changed.

Clutch drum algorithm

For uninterrupted use of the chainsaws, regular technical inspection is necessary.

When replacing the clutch drum should be used for installation only a strictly defined type of structural element of the device. When replacing the drum, you should simultaneously change the bearings of the structure of the structure.

For repair work, you should purchase a special repair kit, which contains a leading star and bearing. After the purchase of the repair kit, the required materials and tools should be prepared for the repair. The main tools that will be required during the repair are as follows:

universal key that comes with a chainsaw;
Stop the piston can be made of plastic or metal;
Special shooter of the centrifugal mechanism or clutch drum.

The work procedure consists of several stages. Each stage has its own characteristics depending on the design features of the chainsaw, but the scheme and sequence of work are the same for any model of the unit.

Sequence of repair work

At the first stage, the saw’s headset is carried out, the cover of the guide tire is removed. After removing the cover, the guide tire and saw chain are dismantled. Removing the fastening nuts is carried out using a universal key, which is included in the set of supply of the unit.

After removing the saw chain and the guide tire, the air filter is dismantled. Then the ignition candle is dismantled. A traffic lock prepared in advance in a pre.prepared candle. The stopper allows you to fix the position of the piston in the cylinder and prevent crankshaft turning. The clutch coupling should be removed using a special fighter installed in the universal key connector. All actions should be carried out clockwise.

After removing the clutch coupling, an approach to the internal details of the device opens, that is, after removing the coupling, you can remove the star.

After removing the clutch drum, it is carried out, depending on its type, inspection and verification of the crown and asterisk. Depending on the design of this node, the design elements of the structure are replaced. When carrying out the repair, special attention should be paid to the springs of the centrifugal mechanism and its fists. If wear is detected, they should be replaced.

If components do not cause complaints, all structural elements are installed on the chainsaw in the reverse order. First of all, you should twist the piston stopper and pull out the starter cord, after which the piston stopper is installed in place. This complex sequence of operations makes it possible to clamp the centrifugal mechanism on the unit crankshaft. The clutch is installed in place and clamped using a universal key in the set of a chainsaw. The clamping with the key should be counterclockwise.

The last step in repair work is the installation of the remaining structural elements of the device.

When replacing the stars, all work should be carried out carefully and with caution. All repair work should be carried out using special tools, otherwise it is possible to disable a centrifugal mechanism or saw chain.

What you need to know about the design of the leading gear on the chainsaw

The operation of the chainsaw can last long enough until there is a need to replace the failed parts. Leading star or gear, through which torque transmission from the crankshaft to the chain has a large operational resource. However, it ends, which leads to the need to replace the part. Before you do this, it will be useful to find out about what chainsaw stars are.

Leading gears are produced by two types. whole or whole.littered with the drum and prefabricated. The difference between these details is not only in the external structure, but also in operational features, which will definitely be interesting to know the owners of the chainsaws.

Solid. they consist of a drum with a hub and a tuned gear crown. The part is made by casting. The disadvantage of this type of stars is that if necessary, they must be completely changed. There are advantages of such options for drive mechanisms, the main of which is a long operational resource. The teeth of such devices are cut off extremely rarely, and only in those exceptional cases when marriage is appropriate. The second advantage is the lack of a problem with the search for details, as they are in all specialized stores. If there is a need to replace a whole gear on a chainsaw, then you need to know that such devices are more expensive than prefabricated.

If there is a need to replace the leading star on the chainsaw, then the first thing you need to clarify what type of part is installed on the tool. Manufacturers of different models of chainsaws equip them with leading gears of both prefabricated and solid type. How they differ among themselves is already known. It is only worth adding the following:

Both types of parts are interchangeable, only replacement is carried out in conjunction with a drive drum;
By reliability, prefabricated devices win, through which an effective connection with the tool chain is ensured;
In addition to reliability, the prefabricated types differ in the smoothness of the chain, which is achieved due to the presence of a backlash between the protrusion with the slots on the drum and the crown;
Due to the presence of a backlash, the operational resource of protrusions on the drum increases, but the entire load falls on the replaced crown.

Prefabricated devices are noisiness compared to solid, but at the same time they are more effective. It often happens that it is not possible to find a replaced crown for the chainsaw star, which leads to the need to install a whole drum.

Do.it.yourself Carburetor Instructions for the carburetor

Basil is needed in construction, and in gardening, and in the improvement of territories. its presence greatly simplifies the implementation of a number of wood processing tasks. The main knot of this tool is the engine, the operation of which largely depends on the state and settings of the carburetor. It is here that the fuel mixture is being prepared. So, if the saw does not start, stalls or does not provide the set power, it is likely that the reason for this is the incorrect operation of the carburetor. Fortunately, in many cases you can cope with it yourself. Only for this you need to know and understand the device and principle of operation of this unit and, of course, the chainsaw itself.

Clutch basket of modern chainsaws. a successful and simple technical solution. Fully meets all the requirements for such a node:

automatically, without a special turned on the operator, transmits torque from the engine to the gear of the circuit at revolutions above the idle,
does not move the chain at idle,
Protects the engine if the chain is clamped in wood (the clutch is slipping, the engine does not stall and does not wedges).

It is through the interaction of these nodes that the clutch automatically turns on with increasing speed.

drum (upper lid with gears), 2. clutch, clutch disc (mechanism with springs), 3. bearing.

The centrifugal mechanism is fixed on the thread of the crankshaft. At low (idle) revolutions, it rotates without touching the led the outer cover with the gear. With an increase in revolutions, centrifugal force extends the clutch segments. They are pressed to the outer cover with a gear and begin to rotate it, adigns with it due to the friction force. The chain begins to move.

With a decrease in the revolutions, the springs are returned (compressed) segments to the previous position, a gap arises between the lid and them, the chain stops.

Features of this design. the wear of the segments of the centrifugal mechanism and the inner surface of the outer cover due to friction.

Also occurs with frequent clamps of the chain in wood. At the same time, the shaft is spinning at high speeds. The segments are extended under the influence of centrifugal force, pressed to the inner surface of the outer cover. That is, the clutch is included in the operating mode. At such revolutions, segments and lid with gears should rotate together, synchronously, and the chain move. But on the brake and when jamming, the clutch slips, between segments and the inside of the lid, enhanced friction, overheating and wear.

There are needle bearings in this node that require regular lubrication. The regulations for their maintenance, as well as the clutch as a whole, is registered in the instructions for operation for each specific brand of the chainsaw.

Alternative solutions

The drive design of most chainsaws presented in the domestic and semi.professional segment of the market are fundamentally similar. The sequence of operations necessary to remove and replace the lead gear coincides.

How to change a star on a partner?

As already mentioned, the best option would be to purchase a regular reptity for this model.

The advantage will be the presence of a kit and bearing. You should also check the presence of a drum puller intended for a given saw, as well as a latch for fixing the piston in a certain position.

If, nevertheless, there is a brilliant idea of “improving” or modernizing this node of the chainsaw, it is better to consult with specialists and just with experienced people.

Husqvarna chainsaw 137. Replacing the clutch drum

The chainsaw drum is one of the most common consumables on the chainsaw, because it sets the cutting chain in motion. The drums themselves are divided into two types. with a welded leading asterisk and with a change of crown, and in the second case only a shift crown wear out, the drum itself changes much less often.

When repairing a clutch of a chainsaw, we follow the rule. When the two chains are completely worn out, the tire changes when two tires wear out, the clutch drum changes. The level of wear of the star can be determined without special tools, just inspect it. The chain, moving at high speed, ultimately wipes the teeth along which it moves. If wear is serious enough, replacing the clutch drum of a chainsaw is inevitable.

The article will talk about the chainsaw of Husqvarna 137. Clutch replacement is a simple procedure and occurs in several stages.

First you need to remove the tire and circuit brake. To do this, use a combined wrench that comes with a chainsaw.

chainsaw

How to remove a star from a chainsaw: independent replacement

Today, almost every resident of a country house or summer resident has its own chainsaw. You can’t do without it with regular triggers, landscaping and utilities. Demand for chainsaws does not fall, but even grows due to the fact that these devices do not require special knowledge and skills. The only thing you need to do regularly is to conduct technical examinations.

Like any other tool, chainsaws need careful care. It is necessary to constantly check the supply of oil into the circuit, the chain tension, the operation of the brake, the ignition system and much more. Fortunately, almost any problem can be solved at home on your own.

Asterisk Leading for a chainsaw

A sprocket for a chainsaw or a clutch plate serves to transmit rotational movement and power to a saw chain. Three types of leading stars are structurally distinguished;

The star is whole. In such an asterisk, the clutch plate is rigidly welded to the drive crown. In case of wear, such a star changes entirely.

The star is collapsible. It is a plate of clutch with slots on which a drive asterisk is dressed. The clutch plate wears out very little and the replaced whisk is cheap. The collapsible asterisk is very beneficial for large volumes of work and is used mainly by professionals.

Asterisk is a shift crown. This asterisk is used to replace it on collapsible stars.

change, sprocket, husqvarna, chainsaw, replace

The selection of a leading asterisk is carried out according to the chainsaw model. If you doubt the choice, call us, try to suggest the correct spare part.

note! Do not try to pick up the chainsaw star in size. Most likely the star you buy will not work. To select a drive asterisk, be guided only by the brand and model of your chainsaw.

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Stihl MS361, MS362, MS440, a set. 3/8 ″ 8 Trosubevs

Stihl MS361, MS362, MS440 chain stitch, 3/8 ″ 8 teeth set of chain driven.

There is a product in a supplier warehouse, we can send it within 2-3 days

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