How To Properly Tension The Chain On A Stihl Chainsaw

Table of Contents:

How to put it on correctly. How to install a chain on a chainsaw?

You can install and tension the chain by loosening the main screw and sliding the links onto the drive sprocket and guide bar. It is important to watch out for the tails falling into the groove so that they do not fly off again.

Before tightening the chain of your Husqvarna chainsaw, it is worth looking at its condition and, if necessary, replacing it with another one. After removing this part, you need to carefully inspect the guide groove along which the links go. This is where dirt accumulates, absorbing oil and interfering with the tension of the cutting part. This place is cleaned with a thin metal object. If this is not done, oil may not get on the bottom of the bar, and after installing the chain, the links will slip worse, which affects the sawing efficiency.

How to properly tension the chain on a chainsaw

Regularly tightening the chain on the chainsaw is necessary not only for efficiency, but also for the safety of the worker. Most devices (especially the Stihl brand) have a special device on the side, as in the photo, to help bring the links to their normal position.

Chain thickness classification

The groove on the saw bar on different units has its own thickness, so for greater efficiency it is better to choose the optimal one. The minimum parameter is 1.1 mm. Such a part can only be installed on household mechanisms with low power. Chain with a link width of 1.3 mm is more popular. Applies to both cheap and semi-professional Goodluck chainsaws.

The rest of the types are used on powerful tools: 1.5, 1.6 and 2 mm. The last 2 of the listed ones are only for professional Ural mechanisms. But before choosing a part by thickness, you need to find out which one of them can be installed on the saw bar of a particular tool.

How to lubricate the chain?

  • 1.1. the simplest saws;
  • 1.3 and 1.5 are semi-professional;
  • 1.6 and 2 mm. the most powerful.

Proper maintenance of the chain and correct tensioning is the key to durability. With due attention to the Ural or another brand chainsaw, it is easier for the employee himself to cope with a well-tuned tool. The presented helps to understand the principle of handling the mechanism.

Chain tension

The chain tension is adjusted:

  • When installing the chain on a chainsaw after sharpening;
  • When the tension is released during the operation of the chainsaw;
  • When replacing a worn or broken chain with a new one.

The chain is tensioned with a special screw. Most often, for convenience, it is placed on the side surface. The tension force is adjusted empirically. The normal position of the chain is determined by the bar, while the lower part of the chain cannot have a gap, since it should not sag.

The degree of tension is determined manually. by hand, wearing a protective glove, the chain is scrolled. With the normal arrangement of the chain in the tire, the movement of the cutting tool should be carried out freely, without much effort.

Note: when adjusting the chain tension, the brake must be in a free state. unlocked.

Tip: when using the saw in winter conditions, the tension must be carried out on a heated saw. the metal elements expand from the temperature rise and the chain may sag. At the end of the work, the tension should be loosened. during cooling, an excessive load may occur from the contraction of the metal during the cooling process.

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How to tension the chain on a Husqvarna chainsaw

All safety rules described for the model above are the same for Husqvarna (Husqvarna) saws. Do not tighten the chain with the saw engine running. It is allowed to start work only after a complete stop and cooling.

Before tensioning the chain on a Husqvarna chainsaw, check if additional tension is required. It should be noted that new saw chains require more frequent tensioning. From time to time, it stretches during operation, so this operation must be carried out before each use, if necessary. Otherwise, it will be necessary not only to replace the chain, but also the saw drives.

The first step is to loosen the securing nuts located on the clutch cover. The next step is to turn the adjusting screw 45 degrees. If the chain on your Husqvarna chainsaw is overtightened, turn to the left (counterclockwise). In the opposite case, the screw turns to the right. If a single tightening is not enough, the operation must be repeated. At the end of the procedure, tighten the nuts on the protective cap using a combination wrench. They can also check the chain tension of the chainsaw by hooking it onto the outer tooth and pulling the chain along the guide in the tire.

How to put the chain on a chainsaw correctly

How to tension the chain?

To properly tension the chain on a Husqvarna chainsaw with the engine not started, first loosen the screws securing the cover. After that, the part that corrects the tension is rotated. If the links sag from below (even a little), then you need to tighten them. Before tightening the chain on a chainsaw (Husqvarna, for example), you should read the attached documents. After all, the mechanisms of different firms have their own differences.

How should the chain be tensioned on a chainsaw? This can be determined by lifting it up. Normally, the shank should be one third immersed in the groove. If it came out completely, then the chain must be tightened, if it came out less than 2-thirds. loosen. When scrolling, the links must pass freely along the tire. After movement by hand, the links pass a little more by inertia under normal tension. If the chain instantly slows down, then this indicates a tug.

To quickly tighten the chain on a Stihl chainsaw, there are special devices that help you do this without keys. To use them, it is enough to release the sprocket cover, and then turn the adjusting wheel to the left to loosen, to the right to tighten. All this is only done when the links are cold.

Loose tire

When the chain tension is reduced, the problem is often accompanied by a weakening of the tire itself. To check its condition, you need to inspect the place between the top plate on the headset casing and the inner surface on the case. When the fixing bolts are loosened, the bar starts to move, which can be seen by the characteristic vibration during sawing. For frequent use, it is recommended to tighten the bolts regularly.

Figure 1. Loose tire

If you decide to tighten the tire yourself, then you need to find and lower the chain brake. Turn the tension screw so that the chain fits snugly into the grooves. After that, pull back the chain in the direction of travel, if it is too tight, loosen the screw.

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Trouble with a leading star

Sometimes chain slack is due to drive sprocket problems. The most common situation is when it is poorly secured. Step-by-step algorithm to twist the asterisk:

  • Remove the engine cover.
  • Remove the air filter and unscrew the candle, putting in its place a special stopper to fix the piston in an immovable position.
  • Using the angle grinder wrench, turn the clutch disc clockwise to the highest position. Check the tightness of the sprocket, adjust its position. Figure 3. the driving star on the chainsaw

After tightening, reassemble the chainsaw, be sure to put on the protective cover. When assembling, check that the chain fits snugly on the bar.

How to put a chain on a chainsaw correctly: instructions, recommendations, basic methods

The chain is an important design element of a chainsaw. It is she who has the greatest load during work, so high-quality and systemic care is required. When using any model, it is important to know how to put on the chain correctly, to monitor its tension. If it is not secured correctly, there is a risk of stretching and coming out of the grooves. Reduced saw performance and increased risk of injury at high power.

Why did the chain fly off?

There are several reasons why the chain can fly off during operation. This may be due to improper tire operation or insufficient tire tension. The problem sometimes appears even with an insufficiently secured drive and driven sprocket. Determination of the cause allows you to accurately select the required repair, tools.

Fitting the tire on Stihl and Husqvarna

Chainsaw models from the manufacturer Stihl may differ during the assembly process. Step by step guide:

  • Open the wing nut, remove the chain sprocket cover. Turn it on the tire all the way to the right.
  • Place the chain on the bar, starting from the top, the cutting tooth on the top side must point straight ahead.
  • Attach the assembled tire to the chainsaw, pull the structure over the sprocket. Slide the guide onto the shoulder bolt. Close the cover by hitting the pins in the holes provided by the manufacturer.
  • Turn wing nut until sprocket cover contacts motor housing.
  • Turn the clamping bolt forward, the drive links must fit into the grooves in the bar. Tighten the wing nut completely.

At the end of work, check the tension, if the headset does not move well, adjust the tension with a nut. Engage the chain brake before starting.

The Husqvarna saw chain installation algorithm is almost identical. The main difference is that in most models, the tension and adjustment of the position of the headset to the body is controlled not by one, but by two wing nuts. There is seldom a separate adjusting lever on the outer sprocket guard, so the tension setting should be done using bolts only.

How to properly put a chain on a chainsaw?

In most models of chainsaws, the chain is easy to put on the tire by unscrewing the main screw, then the links must be placed on the drive sprocket. Before starting work, the general condition of all cutting surfaces and the guide groove and setting wheel should be inspected. Often, dirt and small chips accumulate in it, which will subsequently lead to scheduled repairs, deterioration of sliding. Step-by-step algorithm of work:

  • Loosen the screws securing the sprocket protection cover, usually it is tightened with a wing nut.
  • Turn the tensioning sprocket to the right until it stops.
  • Place links on the headset starting at the top. Drink so that they fall into the corresponding grooves.
  • Replace the chain sprocket mount, tighten the nut. The guides must fall into a special chute.
  • Release the chain brake, pull the chain along the mowing line to check the tension. Tighten the tensioner lever if necessary. Figure 4. Installing the chain on the chainsaw

The setting wheel should rotate freely after installing the chainsaw chain. At the end of the work, it is imperative to lubricate all moving parts of the tool in order to avoid rapid wear.

The chain stretched

Any functional changes in the chain lead to a decrease in the productivity of the tool, injuries during operation.

It should be regularly monitored so that there is no deformation of the metal and stretching more than 1 cm.

If this problem still occurs, you need to purchase a new chain or correct the old one.

Disconnect the chain links on the machine or fix it in a vice, file off the rivets and knock them out with a bit (it is not recommended to use an angle grinder).

Remove 1-2 links depending on the chain stretch. After that, put all the elements in place, insert the rivet and beat it off with a hammer, use a special rivet tool. For reliability, it is recommended to use a welding machine. At the end of the work, grind off excess and burrs with a thin file.

How to install a bar with a chain on a chainsaw?

Often, problems in the operation of a chainsaw arise when the tire is incorrectly installed. This can be recognized by the characteristic rattling, vibration and low performance of the saw during operation. The tire is fastened to the body between the outer plate; it is fixed with a special bolt.

Popularly referred to as the “engine assembly”, this part consists of a drive sprocket and locking bolts. It is not difficult to install the tire together with the saw. you need to remove all protective covers, unscrew the fixing bolts a third of the length and put the headset. Then tighten all the nuts tightly, turn the tensioner with a special lever.

Chain tension

To check the tension, you must first release the brake. Then pull off the chain in the middle of the headset, normally the shanks should not protrude more than 2/3 of the height. It is recommended to scroll it manually. do not jam and slip too fast. If necessary, tighten the nut on the protective cap.

Figure 5. Checking the chain tension

Installing and checking the chain tension on the bar is an important process in the operation of any chainsaw. The work is easy to do yourself. Regular tool maintenance prevents injury and reduced productivity, even when working with dense woods.

Stihl chain manufacturing (how saw chains are made)

Saw chains must withstand enormous loads. What materials, technology of their manufacture. All this is demonstrated in this. See and enrich your knowledge.

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B shows the mechanism and sequence of sharpening chains for rip sawing on the machine. And also tell you about the nuances that lie in wait when performing these works.

Oregon 106550 chain sharpening machine

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STERN chainsaw chain sharpening machine (Stern)

STERN chainsaw sharpening machine. They can select and set the angle of sharpening of the teeth and align them to one size. Good choice of machine tool for home use.

FORTE chain sharpening machines

Chain sharpening machines FORTE STZ-100 (disc diameter 100mm; power 550W) and STZ-104 (disc diameter 104mm; power 600W). Both models have a precise adjustment system that allows you to set the chain at the desired angle and bring the disc exactly to the sharpened edge.

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How to install a chain on a chainsaw?

You can install and tension the chain by loosening the main screw and sliding the links onto the drive sprocket and guide bar. It is important to watch out for the tails falling into the groove so that they do not fly off again.

Before tightening the chain of your Husqvarna chainsaw, it is worth looking at its condition and, if necessary, replacing it with another one. After removing this part, you need to carefully inspect the guide groove along which the links go. This is where dirt accumulates, absorbing oil and interfering with the tension of the cutting part. This place is cleaned with a thin metal object. If this is not done, oil may not get on the bottom of the bar, and after installing the chain, the links will slip worse, which affects the sawing efficiency.

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Chain thickness classification

The groove on the saw bar on different units has its own thickness, so for greater efficiency it is better to choose the optimal one. The minimum parameter is 1.1 mm. Such a part can only be installed on household mechanisms with low power. Chain with a link width of 1.3 mm is more popular. Applies to both cheap and semi-professional Goodluck chainsaws.

The rest of the types are used on powerful tools: 1.5, 1.6 and 2 mm. The last 2 of the listed ones are only for professional Ural mechanisms. But before choosing a part by thickness, you need to find out which one of them can be installed on the saw bar of a particular tool.

How to lubricate the chain?

  • 1.1. the simplest saws;
  • 1.3 and 1.5 are semi-professional;
  • 1.6 and 2 mm. the most powerful.

Proper maintenance of the chain and correct tensioning is the key to durability. With due attention to the Ural or another brand chainsaw, it is easier for the employee himself to cope with a well-tuned tool. The presented helps to understand the principle of handling the mechanism.

Why chain tension is necessary?

The chain performs two functions at once. it directly cuts the wood and fixes the tire, preventing its arbitrary movement. The correct position and tension of the chainsaw chain allows you to fully operate the tool, avoid dangerous injuries during operation. If the saw head is installed incorrectly, it will easily fall off during sawing, harming the operator. Even with a slight weakening, it gradually breaks the tire groove, which leads to the failure of the teeth of the driven sprocket.

In this case, excessive stress leads to an increase in the load on the rotor, a reduction in the saw’s service life. Therefore, it is important to regularly check the tension, if necessary, tighten the special mechanism on the tool body.

Step by step instructions: how to properly tension the chain on a chainsaw?

Regardless of the class of the chainsaw, the chain is weakened under the influence of intense regular loads. This can be determined by the appearance of characteristic gaps in the link joints, a change in the sound of work and an increase in vibration. You can tighten the tension of the saw headset yourself using a special mechanism. This avoids serious damage and injury while working with wood.

How to check the correct tension?

To ventilate the quality of tension, you should gently pull it back in the middle of the tire.

The permissible level of exit of the tails of the cutting links should be no more than 2/3 of their length.

You can also determine the need for a tightening by the following criteria:

  • The appearance of a creak and rattle in the area of ​​the main drive sprocket;
  • Loosen the tightening of the protective mechanism, tire fasteners;
  • Sawing, increased vibration and noise.

Chainsaw decreases productivity and increases operating time. Even when sawing soft woods, the chain starts to get stuck in the groove, the speed and smoothness of the movement are reduced.

How to adjust the chain correctly?

You can install the chain and adjust its voltage with your own hands, without contacting a service center, regardless of the class of the chainsaw, its age. Before starting work, each link should be fully checked, since the slack can also be associated with wear on the teeth or sprockets. Step-by-step algorithm for the correct tension of Stihl 180, Husqvarna, Champion, Partner and other models:

  • Place the instrument on a table with the headset on top. Unscrew the threaded fasteners of the protective cover, dismantle the tire and thoroughly clean each element (it is convenient to use a vacuum cleaner or a compressed air cylinder);
  • Determine the correct chain position. The teeth should be on top, going in the opposite direction from the body;
  • Put it directly on the tire. Secure the bolt mechanism, make sure there is sufficient free play.

Before looking for an answer to the question of how to pull the chain on a chainsaw, you should study what methods exist. There are two widespread methods of tension. fast and frontal. The first method involves the use of a tightening bolt. It must be tightened clockwise, at the end, be sure to check the wing nut and lower the handle.

The frontal method is more complex, the main steps are:

  • Unscrew the nuts that secure the tire to the chainsaw. Loosen and slightly pull up on the edge of the headset;
  • Pull the adjusting screw to the desired level, fix the tire back with the nuts;
  • Check the chain tension with your fingers, if necessary tighten the nut.

Regardless of the characteristics of the tensioner, excessive tension on the chain must not be allowed. this is no less dangerous than loosening it. After installing and adjusting the saw unit, it is recommended to run the tool at idle speed. Carefully check the smooth movement of the chain, the presence of sagging and extraneous whistling sounds.

Tensioner mechanisms

Depending on the design features of the tool, the tensioning mechanism of the headset may differ.

In budget models of chainsaws, a classic straight-threaded bolt is used to adjust the chain, which is located on the side of the body.

In this version, the package includes a special tightening key or there is an external slot for a slotted screwdriver.

All professional models are equipped with more convenient adjusting mechanisms. With the help of them, you can tighten the chain with one movement of the lever or by turning a special disc. Their design consists of a built-in tensioner, locking when turning is achieved by means of a lock nut. In some models, adjustment is carried out by locking the tire in a certain position of the tool cover. Regardless of the method, the circuit voltage needs to be corrected only in a cold state. Hot chain tension causes sagging as it cools.

If pulling doesn’t work

With the correct installation of the chain, there should be no sagging; when pulled, the teeth come out of the grooves no more than 4-6 mm. After work, roll it along the tire in the direction of rotation, the stroke should be smooth and light. If the tension correction does not help, the cause of the under tension may be due to the following factors:

  • Incompatibility between the chain model (tooth pitch, length, size) and the saw headset of your chainsaw model;
  • Failure of the guide sprockets;
  • Breakage of the tensioner, adjusting screw;
  • Lack of lubrication (the problem is solved by additional use of oil);
  • Mechanical damage to the bottom of the teeth, grooves in the headset.

Figure 4. Excessive stretching

If you cannot achieve sufficient chain tension, the tool must never be used. You should check the compatibility of all components, if possible, contact the service center to fix the breakdown. Using a chainsaw without a high-quality setting can lead to dangerous consequences.

Possible risks in case of uneven tension

Any changes to the saw head (sagging, broken teeth, overexertion) can lead to problems during operation. Risks of sagging tool operation:

  • Decreased productivity when sawing, felling wood;
  • The chain gets stuck in the groove, flies off the tire during starting;
  • Breakage of the headset, damage to the guide sprockets;
  • High load on the rotor, reduced tool life;
  • Serious injury while working.

Before starting work, it is important to qualitatively check all moving mechanisms, the tightening of the adjusting bolt. Use a special oil for lubricating the teeth, saw headset. Adjusting the chain and sawing directly must be carried out in protective clothing, gloves and goggles must be worn to avoid injury.

The chainsaw headset is an important building block for productivity and quality. Before starting operation, check the tension, make sure it is correctly installed. Tension is adjusted using a special bolt or lever on the body. Sagging or excessive tension can lead to serious consequences. breakage of the saw, injury when cutting wood.

Installing the chain on a chainsaw, how to properly tension and check the tension

If you have a chainsaw at home, then you should know that it requires special care. It is necessary to periodically clean and sharpen the chains, clean the air filter, oil supply and tires. And, of course, you need to monitor the tension of the chain, since with a poor tension there is a risk not only to harm the saw, but also to your health if the chain falls off at high speeds.

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The chain stretched

If your chain hangs on a chainsaw, then this indicates a malfunction of some mechanism, one of the options is the wear of the chain itself.

Over time, the metal deforms and the chains become 0.5-1 cm longer. It is best to fix this problem by purchasing a new circuit, but there is a way to get the old one back. Experts say that it is very difficult and almost impossible, but we will tell you how it can be done at home.

For this we need:

  • Vice;
  • File;
  • Electric welding machine (not needed in all cases);
  • A hammer;
  • Pliers;
  • Beard.

A regular chainsaw chain is made of strong steel, so it is difficult to disconnect. You need to disconnect the chain on the inside of the rivet, which serves as a connecting mechanism.

To begin with, the chains need to be fixed in a vice, and then gradually grind off the protruding part. You need to grind with a file or a file. It is not recommended to use an angle grinder, as there is a risk of damaging the lateral parts of the links. After sewing, the rivets are knocked out with a beard. The knocked-out rivet should not be thrown away. You may not be able to find a replacement for it. Manufacturers of gasoline saws do not produce individual parts for the chain, as they do not expect consumers to be able to repair the chain themselves. Most likely you will not be able to make a new rivet yourself, so you will have to install the old one.

In order to shorten the chain, you need to split it in two places. But remember that the number and spacing of the guide lugs on the inside of the chain must match the drive sprocket.

How To Properly Tension The Chain On A Stihl Chainsaw

After removing one or more of the links (depending on the degree of chain stretch), the chains can be connected. We connect to old rivets, while pressing them tightly on the sides.

Next, we need a welding machine. The rivet must be welded to the lateral parts of the link. After that, with a file we grind off the excess that was formed when working with welding. The chain can be considered serviceable again.

How to tension: installing the chainsaw cutting element

We have analyzed the main reasons for the sagging chain. How to install a chain on a chainsaw is described in the paragraph above. Now you need to properly tighten the chain, and check if it will overtighten.

Chain tension

There are two ways to stretch the chain: fast and frontal. The best way to stretch the front is.

If you carry out frontal tension, then you need to unscrew the nuts that hold the tire and lift it by the edge. With a special bolt on the right, you need to tighten the chain until an acceptable tension is obtained, and then raise the tire even higher and clamp it.

If using the quick tightening method, first lift the wing nut handle and loosen it. Then tighten the chain tensioning screw clockwise until it stops. Then re-tighten the wing nut and lower the handle.

Chainsaw device features

The main part of a gasoline saw is the engine. In most modern devices, the engine is single-cylinder. Air cooling, two-stroke piston system. Oil in these types of engines is added directly to gasoline, and all due to the fact that the fuel is constantly flushing the crankcase. The oil-gasoline ratio varies from 1:20 to 1:50 depending on the manufacturer of the chainsaw.

The air filter on gasoline saws plays an equally important role. It needs regular cleaning. If the filter is heavily contaminated, dust from it will fall directly into the piston system, which will lead to engine damage.

If the filter is clogged, the saw loses speed and the engine begins to overheat, which can lead to burning of the piston rings.

The starter on gasoline saws is a rope with a handle that you pull on to activate the motor. When you pull on the rope, the teeth catch the ratchet, the flywheel starts to spin.

Many people complain about long pulling on the rope to ignite the engine. It depends on whether the carburetor is correctly aligned. If the carburetor produces the correct oil-gasoline mixture, then there should be no problems.

The main working mechanism is a tire with a chain.

The chain consists of three types of teeth: leading, cutting and connecting. They are riveted together. Cutting teeth are located on two sides: right and left.

Chains are divided into two types: high profile and low profile. The first type includes chains, in which the teeth are located with a large gap, the second. with a smaller gap. Chains can also vary in shank thickness and link length. The chainsaw chain is attached to a bar that guides it in the right direction. The end of the tire has a specific groove that holds the links and allows the chain to rotate. A driven sprocket is located at the front of the tire. The chain together with the tire is called a headset, since they are detachable parts of the chainsaw.

The gasoline saw has an automatic chain lubrication system. The tire supplies oil, which is then absorbed by the sawdust. If the saw is idling, the oil supply stops.

Poor drive sprocket

One potential chain slack on your device is a drive sprocket issue. Most often, everything happens due to the fact that the star is poorly fixed. Now we will tell you how to properly fasten the star and then put the chain on the chainsaw.

First you need to remove the engine protection cover. Next, remove the protective cover of the spark plug, pull out the air filter. Then you need to unscrew the candle with a special key. A special stopper is placed in its place, which fixes the piston in a certain position. With a special wrench (you can use a universal wrench for an angle grinder), turn the clutch disc clockwise until the piston reaches the uppermost position. If you look into the hole of the plug, then the piston should remain at the bottom. You can use a thick rope as a stopper; it is better to fold it several times. Once locked, you can clamp the drive sprocket by rotating the clutch disc counterclockwise.

After clamping, you need to do everything in the reverse order, that is, assemble the chainsaw. A chain is put on the tire, it must hit the drive sprocket that holds it. The tire is placed in special mounting holes and bolted. Then protection is put.

Why the chain flies, we find out the reasons

If you wondered why the chain on your chainsaw flies, then there is some kind of malfunction in the mechanism. There are three main reasons for this problem: bar malfunction, chain stretch, and loose sprocket. Let’s take a closer look at each of the possible causes of breakdown.

Tension check

To check the chain tension, the saw brake must be disengaged. Then manually pull the chain along the bus, if it runs smoothly and does not sag, then everything is fine. If the chain walks very tightly, then it needs to be slightly loosened, because there is a risk of rupture during work.

Bus problems

When problems arise with the tire, the chain tension is almost always loosened. Usually this problem occurs at the place where the tire is attached.

This place is located in the groove between the outer plate, which is located on the chain guard and the inner plate, which is located on the motor housing. The casing together with the tire is fixed with a bolt. This mount is called “engine unit”. Drive sprocket and tire mount protected by special covers.

If the fixing bolts are loosened, the tire starts to move or vibrate. If the tire is good, then the chain tension should be normal. After stretching, she will walk for at least five working days without suspenders. Therefore, you need to carefully tighten the bolts that hold the tire.

To understand how to tighten the chain on a chainsaw, you first need to find and release the chain brake. The tensioning screw is next to the bar and is turned until the chain is pulled over the bar. Then pull the chain in a clockwise direction. If it does not move, then loosen it slightly by turning the tension screw in the opposite direction.