How to tighten the chain on a chainsaw

Why the chain comes off?

The chain slipping and slipping off the bar is often caused by wear. As a result of heavy loads, the metal is gradually deformed, blunted and stretched. When worn, the chain can increase in length by 1 cm compared to its original size. In this situation, a new chain will need to be installed.

If there are problems with the bar during the operation of the power tool, vibration occurs due to the loosening of the fastening bolt. Usually with a little loosening of the fastener, there is no slack in the chain. To remedy the problem, simply tighten the tire and check the tension.

tighten, chain, chainsaw

Chain tensioning is needed if the sprocket is not positioned correctly. To reach the sprocket, remove the protective cap on the engine, plugs, and air filter. At the point where the plugs are installed, a stopper is attached to secure the piston.

The universal wrench is used to turn the clutch disc clockwise and then tighten the drive sprocket, fasten the filter and plugs and put on the protective cap.

Chain tensioners

The classic budget chainsaw chain tensioner is usually a threaded bolt with an adjustment component, standard or side. Use the wrench or screwdriver that comes with the chain to adjust the tension.

expensive models are equipped with easy-to-operate devices that allow you to tighten the chain with a single movement of the lever or by turning the adjusting disc.

In the first case, the degree of tension is fixed by the counter nut, in the second case, the bar and the chain tensioner are locked in a predetermined position by setting the cover. In both variants a reliable fixation of the chain in a given position is guaranteed, as well as the possibility to compensate for its extraction with minimum loss of working time.

The principle of tightening the chain is as follows

  • with the standard wrench supplied with the chainsaw, the nuts on the cover are loosened;
  • then the screwdriver is inserted into the special slot, the chain is rotated and tensioned;
  • the wrench must be turned slowly and carefully. after a couple of revolutions, the degree of tensioning is checked manually, then, if necessary, several revolutions are made again;
  • when the chain is sufficiently tightened, you need to put the cover back on.

For working with hard materials, specialists use carbide chains made of tungsten carbide material. they are not made entirely of cobalt, but with a tungsten carbide facing. Primarily used for longitudinal sawing of concrete, aerated concrete, and longitudinal sawing of especially hard wood.

Carbide chain has a proper degree of durability, much less blunt, but will cost 3-4 times more than a standard chain. Pobedite chain sharpening at home is not possible, this requires special equipment.

Purpose of chainsaw chain

The main task of this part is to cut wood, stone and other materials. Chain consists of a set of connected chain links that have specialized teeth. As for the alloy, for the production of all (including professional) use a metal with similar characteristics, but one chain can be very different from another.

The difference is as follows:

  • By Length. Each variety is designed to be attached to a specific bar.
  • In pitch (distance between rivets). Increasing it has a positive effect on performance, but increases the impact on the engine.
  • By shank size. It comes in 1.1 mm to 2 mm sizes.
  • Height and shape of teeth (high and low profile). The quality of the cut and the classification of the work depends on this point.

Important! It is recommended to periodically sharpen the teeth with a file or suitable tool. A dull blade will put additional strain on the engine and increase fuel consumption.

Also, tightening the chain too much can shorten the life of the motor.

Not hard to diagnose. To do this, take a link and pull it up. If the chain “tails” come out to 1/3 or 2/3 of the total length, then the chain is set correctly and this is considered as acceptable. It is also useful to check the movement of the chain by hand. It should turn smoothly without crunching or jamming. If the chain saw has passed the tests, you can start to work on it. usually uses gasoline mixed with oil, and the proportions are specified by the manufacturer. Maintenance also involves lubricating all moving mechanisms. Otherwise even a high-quality and new saw can break after 3-5 hours of sawing.

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How to tension the chain on a chainsaw

The chainsaw chain may need tensioning and adjustment for the following possible reasons:

  • Putting a new chain saw into service. A newly purchased tool is usually delivered with uninstalled saw headsets. After assembly, the tensioning of the chain must be adjusted.
  • Changing the chain. Although every bar comes with a chain of a specific size, they all have different lengths. It is also a good idea to have several sharpened chains to change over a long period of time and these, too, tend to be of different lengths. Accordingly, it is necessary to adjust the tensioning after each change.
  • chain sharpening. Can be done in two ways. directly on the bar, or on a special machine. In the second case, the chain is removed from the chainsaw and may need to be tightened after it is installed back.
  • Mechanical loads. When sawing, the chain links are resisted by the wood. This causes it to stretch over time and it begins to sag.
  • Natural stretching. A chainsaw chain consists of many links that are connected to each other. There is natural wear and tear over extended periods of use, which causes the chain to elongate.
  • Incorrect settings. If the chain is not tensioned correctly to begin with, immediately after the first sawing, there will be sagging that must be corrected.
  • Careless or improper use. While cutting wood, hard objects (nails, wire, other metal particles) can sometimes get caught in the cut, or the tool can be used for purposes other than its intended use. In all these cases, the chain is under load, which pulls out and starts to sag.
  • Poor chain quality. The lower the quality of the chain, the faster it stretches and the more often you need to readjust it.

How to tension the chain on a STIHL chain saw

If you have a STIHL chain saw in your hands, there is nothing to be alarmed about.к. you have one of the most reliable and high-quality models, assembled from components made by one manufacturer in its own facilities.

Before you tighten the chain on your STIHL chain saw or check the tensioning, always wear protective gloves. Not only do they prevent your hands from being cut on the sharp cutting edges but also keep them clean because machine oil is hard to remove and wash.

The first step is to check the STIHL chain tension. If the chain is slack (some of the inner claws are visible), the chain needs to be tightened. If they are loose, they will damage the bar and put the chain in bad condition. If the chain is stationary when the brake is released, it means that it is overtightened, respectively, it must be loosened.

STIHL offers two options for tensioning the chainsaw chain, the quick tensioning and the front tensioning. Both are used to improve in the process. It is worth noting that it is forbidden to tension an overheated chain. According to the laws of physics, it will compress after cooling, and may break from overtensioning or damage the tire.

For the frontal variant it is necessary to unscrew nuts and to lift the chain saw bar by the edge, on which the chain is installed. The bolt on the right side needs to be turned with a screwdriver until tension is correct. Then raise the bar even higher and tighten the nuts back on. A quick method of tensioning the chain of STIHL chain saws involves the following: turn the tensioning wheel on top to the right as far as it will go by lifting the wing nut knob and loosening the. After the operation, the nut is tightened again and the handle is lowered. That’s where the procedure ends. STIHL chain saw models have some differences in the rules of chain tensioning, it is advisable to find a manual for the adjusted model.

Install and tension the chain by unscrewing the main screw and putting the links on the drive sprocket and the saw bar. It is important to make sure that the tails get into the groove so that they don’t come off again.

Before tensioning the chain on a Husqvarna chain saw, it is a good idea to check the condition of the chain and replace it with a new one if necessary. After you have removed this part, you must carefully inspect the chain guide bar along which the links run. This is where dirt accumulates, absorbing oil and interfering with the tensioning of the cutting part. Clean this spot with a thin metal object. If this is not done, oil may not get to the bottom of the bar, and once the chain is installed, the links will not slide as well, which will affect your sawing performance.

How to tighten a chainsaw chain

What to tighten the chain on the chain saw?

In general, the procedure for all chainsaws is as follows: loosen the side cover fasteners and turn the chain tensioner. But the cover mount and tensioner themselves may be different on different chainsaws.

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The simplest variant is the side cover attached with one or two nuts and the tensioner in the form of a screwdriver bolt (either slotted or Phillips). In this case, simply loosen the nuts and turn the bolt clockwise. The bolt can be located either in the side cover, in the front again in the side cover, or in the body of the chainsaw itself.

But there is also keyless chain tensioning, which is when no wrenches or screwdriver is needed to loosen the side cover and turn the tensioner. These systems look different from manufacturer to manufacturer. Below you can see in the pictures what they are and what to turn.

How the chain is fitted and adjusted on the chain saw

Now let’s understand how chainsaw chains are tensioned and how to perform this procedure correctly. The adjustment procedure is not complicated at all, and the looseness of the tension should be checked every time before operating the tool. If this is the first time you have held the chainsaw in your hands, it is important to make the first adjustment according to the instructions:

  • Initially, the old mechanism, which is stretched and no longer subject to tension, is dismantled
  • Lay the tool on its side so that the bar is on top
  • Unscrew the two nut fasteners and remove the chain guard
  • The tire is removed along with the old chain. The bar also needs to be replaced when the depth of the groove is reduced. Usually they last at least 2-3 chain changes, but it all depends on the quality of the product
  • The new chain is put on top of the bar, but it’s important to put it in the right position. the bar should have its pointed teeth on top of the bar on the opposite side of the bar from the tool
  • When the chain on the chainsaw is installed, you can put the bar in place by securing it with the adjusting nuts

At this point, the process of replacement is finished, and it remains to perform the tensioning procedure. There are two methods for doing this, which are called front and fast. The front method is the most relevant and is done as follows:

  • The nut securing the bar is loosened and the latter part is lifted over the edge
  • By means of the adjusting screw, the chain is tensioned to the desired parameter
  • Use nuts to clamp the bar in position
  • Check tensioning by hand

Fast method is less relevant, and often used only for tools with new chains and bars. The principle of the quick adjustment is based on loosening the wing nut. Screw in the tensioning mechanism screw as far as it will go in a clockwise direction. The wing nut is tightened at the end of the work and the handle is lowered. This video shows how to tighten the chain on a chainsaw.

How to shorten chainsaw chain correctly and what to do

Often sawyers are faced with this phenomenon when they need to shorten the chain on a chainsaw. This need can arise in two cases. when a smaller bar is fitted to the tool and when the old unit is stretched. If a chain saw is fitted with a different bar size, it is advisable to fit an appropriate chain at the same time. Shortening is a wrong way to go about it, but nearly everybody uses it because it prolongs the life of the cutting part.

How to shorten chain length on a chainsaw yourself

The chainsaw must be in good technical condition and in good working condition, otherwise it would be too dangerous to work with it. A chainsaw is a high-performance tool for cutting wood and wood-based materials. Parts and elements of the tool wear over time. To keep the tool in good condition, it needs to be inspected periodically. Over time, not only will the chain teeth dull, but they will stretch. To avoid the chain slipping off the bar when working, craftsmen resort to shortening it. On how you can shorten the chain on the chainsaw, we will learn in detail.

How to do the tensioning procedure?

To check the degree of tension of the chain, it is necessary to pull it in the upward direction, taking the tooth in the middle or at the extremity of the outer side of the bar. If the tensioning is correct, 1/3 of the tail will be in the guide bar groove. If it is too tight, the chain is too tight and if it is too loose. Free movement of the chain on the tire is important. This is easy to check by trying to twist it by hand.

The tensioning process is not demanding, you just need to understand the order of all the steps required and pay proper attention to this procedure.

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Before you start, you need to make sure that the saw is not running and that accidental starting is completely out of the question. Wearing protective gloves, twist the chain around the axle with your hand. If it is too loose, there will be a large amount of slack in the back of the bar. This is the factor that you should look at when checking if your chainsaw needs adjustment before you start.

How to Tighten the Chain on a Chainsaw | Husqvarna

The first step is to inspect the tensioning mechanism located on the right side below the side cover that secures the tool axle. Most often this mechanism is a simple bolt, but in some cases chainsaws are equipped with a special tensioning system where no additional devices are required.

After that, you need to slightly unscrew the fasteners on the side of the chain to fix the bar. Next, use the adjustment screw to adjust the tension by moving the axle forward. To check that the chain runs smoothly, you need to rotate it more often in the direction it travels during operation.

After adjusting the chain with the tensioning mechanism, the tire nuts must be tightened securely. If the adjustment has been carried out correctly, the chain should run smoothly. It must not get jammed and must have a certain amount of inertia. A wrong adjustment will cause the chain to stop suddenly and become jammed at times. Please note that this is the case if the tension is too great. Because it has more of a negative effect on the tool, it is always better to tune the chain with a little slack. To extend the life of your chainsaw, it is recommended that you do this adjustment as often as possible.

Remember, do not adjust the tensioning on a hot tool.

The chain compresses after it has cooled down, so if it is tightened too much, it may pull the bar and deform it, causing permanent damage to the tool. It is important to let the chain saw cool down before beginning adjustment.

Husqvarna | Tensioning the Chain on a Chainsaw.

How to tension the chain on your chainsaw yourself

It is not difficult to do, the main thing to remember about your own safety. So how do you put the chain on the chain saw correctly?? Stand in front of the chainsaw with the blade facing you. Grasp the tip of the saw blade with one hand and lift it slightly. Insert the flathead screwdriver firmly into the adjusting screw that is to the right of the blade as you look at the saw blade. Turn the screw clockwise to increase chain tension, or counterclockwise to decrease it accordingly. Take the chain in one hand and pull it around the blade. The tension is correct when it is slightly loose by pulling in the direction of the blade, and tight against it at the same time.

If so, no further adjustment of the chain on the chain saw may be necessary. If not, you need to adjust it. Loosen or tighten the adjusting screw to get the correct fit. Hold the tip of the chainsaw blade with one hand. Tighten the two blade retaining nuts on its left side with a saw repair kit or adjustable wrench. Put the spark plug wire back in place and press it firmly.

Chainsaw Mechanism Arrangement

By design, the tool is a classical mechanism powered by an internal combustion engine. The construction of the device uses the most simple internal combustion engine. The chainsaw’s internal combustion engine is a single-cylinder, two-stroke motor. No gearbox in the appliance.

The first thing to pay attention to is the chain tensioner, which is usually located on the right side inside the chain bar holder.

Simplicity in the construction of the saw’s mechanisms ensures high reliability and failure-free operation of the attachment in difficult, dusty environments.

In addition to the internal combustion engine, the construction of the device includes

  • the air cleaning system used by the carburetor to make the working mixture;
  • the guide rail of the device’s saw system;
  • the saw chain mounted on the guide bar;
  • The starter, which ensures the start of the internal combustion engine installed in the construction of the device;
  • The mechanism that provides the tensioning of the chain;
  • ignition and exhaust systems.

The engine of the device is high-speed and has a maximum speed equal to 13500. Such high speed of the engine requires the use of quality lubricant.

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