How to tension the chain on a Husqvarna chain saw

How to install the chain on a chainsaw?

You can 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 the tails are in the groove so they do not come off again.

Before tightening 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 removing this part, you need to carefully inspect the guide groove where the links go. That’s where dirt can collect and wick up oil and get in the way of tensioning the cutting attachment. Clean this area with a thin metal object. If this is not done, oil may not get to the bottom of the bar and the links will not glide as well after the chain is installed, which affects sawing efficiency.

How to tighten chain on Husqvarna 235 e-series chainsaw

Necessary tools and equipment for tightening the chain on your chainsaw

In order to tension it properly you need some knowledge of simple mechanisms and simple tools. On STIHL chain saws, tensioning is easy with the integrated chain tensioner. This method is as simple as possible and such tensioning is done very quickly. For tensioning or adjusting the degree of slack in the chain, the manufacturer recommends doing this:

  • use a wing nut to unscrew the sprocket cover;
  • Turning the thumbwheel adjusts the chain to the desired length and tightens the chain to the required tension;
  • close the sprocket cover again and the chain is firmly fixed to the bar.

If it is impossible to tighten the chain of a chainsaw with a built-in mechanism, use these tools (by the example of a Sparky electric saw):

  • angle grinder with a metal disc;
  • hex key, 5 mm in diameter;
  • piece of wire;
  • a wooden stick or sturdy chip;
  • flat screwdriver.

After the power saw has been turned off, the hexagonal screws are unscrewed, the housing cover is removed, the tensioning screw is unscrewed with a screwdriver and the stem nut is extracted. The side of the screw adjacent to the body of the saw is ground with a disc. The saw is then reassembled in reverse order. The sawblade is needed to clean the housing from sawdust.

How to tension the chain on a chainsaw correctly:

How to tension the chain on a chainsaw

The first thing that the new-found owner of a chainsaw has to learn after learning how to work safely with a powerful tool is its adjustment. The next thing is done after reading the instruction manual testing the work, and if the saw does not work properly, the likely cause is incorrect chain tension. So the question immediately arises. How to tension the chain on a chainsaw?

How to Tighten the Chain on a Chainsaw | Husqvarna

Usually manufacturers indicate in the instructions to the chainsaw how to do it, but if for some reason it is lost, or the device was obtained without it, for example, by inheritance, the text below will help you find the right answer.

How to tension the chain?

To tension the chain correctly on a Husqvarna chain saw with the engine running, you must first loosen the screws that secure the cover. Then turn the part that corrects the tension. If it is sagging at the bottom (even a little), you need to tighten it. Before you tighten the chain on the chainsaw (Husqvarna, for example), it is worth reading the accompanying documents. This is because chainrings from different companies have different gears.

Husqvarna | Tensioning the Chain on a Chainsaw.

How the chain on your chainsaw should be tightened? This can be determined by lifting it up. The shank should normally be loaded one-third of the way into the slot. If it came out completely, the chain must be tightened, if it came out less than 2 thirds. loosen. When scrolling, the links must run freely over the bar. After a movement by hand, the links run a little more under normal tension. If the chain brakes momentarily, it is an indication of overtightening.

To quickly tighten the chain on your STIHL chain saw, there are special devices that enable you to do this without using a spanner. To use them, simply release the sprocket cover and then turn the adjustment wheel to the left to loosen, to the right to tighten. All this is done only when the links are cold.

How to shorten a chainsaw chain, if it is stretched

Not only is the condition of the chainsaw’s main components, engine, carburetor, oil pump, but also the condition of the saw chain important for proper operation. Every saw owner should know how to service and repair the chain. This article is about what to do if the chain on a chainsaw is stretched and how to shorten it.

Algorithm of installation, step by step

Not all modern chainsaws are equipped with an adjusting wheel, which makes the installation procedure of the saw blade much easier. Systems with a locating wheel are generally rare among home chain saws. That’s why it’s important to know the process and sequence of how to install the chain on a chainsaw.

The main points to pay attention to:

  • Prepare an even surface on which you will assemble the chain and bar. This will minimize the chance of damage to the chainsaw or loss of small parts. On the prepared surface is laid the bar and next to it parallel to the chain.
  • Remove the sprocket guard, on modern chainsaws enough to unscrew the wing nut, on older models, you may need a socket wrench of the appropriate size.
  • At the base of the guide bar, turn the idler sprocket all the way to the right. This is the only position in which the chain is installed.
  • Then the chain is put on the guide bar one chain link at a time on the fixing groove. Install the chain from the top of the guide bar, gradually turning it so that the bar is always on top and the chain is always on the bottom, this allows the chain to be always taut and to fit into the guide bar slot without any problem. Be sure to wear thick protective gloves when you do this point, because your fingers will be touching the cutting edge. When viewed from above, the blade is always forward toward the end of the guide bar.
  • Slide both bar and chain onto the drive sprocket.
  • Screw the sprocket cover in place. Make sure that all mounting pins are aligned with the holes. Improper installation with tilt or not all the way in can cause noise, rattling.
  • Make sure that the guides “go” in a special mounting groove.
  • After installation, check that the chain is locked in place on the chainsaw and on the bar. Make sure everything is securely fastened with no backlash.

Important: The tension in the chain is not sufficiently tightened when the chain is installed. Setting the correct tension is very simple and takes no more than 3 minutes. First loosen the nuts on the protective cap. Use the freely rotating adjusting screw to find the right tension so the chain doesn’t pull away from the edge of the guide bar more than 3-5mm.

All that’s left is to tighten the nuts and check the tension. If adjustments are needed, adjust the tensioning again.

When the chain is in use, because of the friction forces, the chain metal heats up and expands greatly, and the length of the chain increases. That’s why it’s important to check the tension regularly and adjust it in time.

How to install the bar and chain on a chainsaw, see the following video, which provides a clear algorithm of actions:

How to tension the chain?

To correctly tighten the chain on the Husqvarna chain saw when the engine is not running, first release the screws that secure the cover. After this fact, the part that corrects the tensioning is turned. If there is any slack (not even a little) in the links at the bottom, you need to tighten them. Before you tighten the chain on the chain saw (Husqvarna, for example), it is worth to read the accompanying documents. After all, devices from different companies have their own differences.

How to tension the chain on a chainsaw is desirable? Find it there is an option by lifting it upwards. in the normal way, the shank should be one-third of the way into the groove. If it came out a hundred percent, the chain should be tightened, if it came out less than 3.5 thirds. loosen. When turning, the chainrings must run freely over the bar. The chain links are tensioned automatically a short distance after the hand movement. If the chain slows down all at once, it indicates overtightening.

To tension the chain quickly on your STIHL chain saw, you have special tensioning aids that help you do this without using a spanner. To use them, simply release the sprocket cover and then turn the thumbwheel to the left to loosen, to the right to tighten. A full set is made only when the links are cool.

Why does the chain come loose on the chainsaw?

The tension in the chain on any chainsaw is constantly weakening. There are several physical and mechanical reasons for this.

  • The chain is made of many links which are connected by bushings through holes. Even with the most precise factory fit, there is play between the bushings and holes, otherwise the chain will not fold into an ellipse. When working, all backlash is pulled to one side, causing the length to increase. Even a micron-sized gap of 52 or more links adds up to a sizeable amount.
  • Under loads, especially heavy ones, the lamellar elements of the whole chain can be stretched.
  • Gradual sagging of chains happens as parts wear out. Worn teeth on drive and idler sprockets, outer edge of guide bar groove. Sprockets shrink in diameter, bar becomes shorter.
  • Metal not only expands when heated, it also lengthens. The chain becomes a little longer and slacker during operation.

The chain on the chain saw does not tighten

On chain saws the following problem can occur. the chain starts to come off the saw. There are several causes for this problem, the main ones being the following:

One of the most popular mistakes is using inadequate accessories. Each chain has its own service life and the chain is considered as the most wearable component among all the parts. The metal is prone to deformation in the process of various loads, which contributes to the fact that the circuit becomes about 1 cm longer, while it is significantly blunted. It is strictly forbidden to pull the old chain on the saw, it is mandatory to buy a new accessory.

tension, chain, husqvarna

Problems can also occur at the attachment point of the guide bar. In most cases, the shroud is secured with a bolt, this attachment is otherwise known as the motor unit. The bobbin and drive sprocket must always be fitted with suitable protective covers. When the bolt loosens, the degree of vibration in the bar increases, contributing to excessive movement of the bar. If it is loose guide bar that causes chain stretching you need to secure the guide bar and then check how the saw is working.

Also a classic chain tensioning error can be an existing sprocket problem that was not corrected in a timely manner. If the chain sprocket is not properly fastened, the saw chain needs to be tensioned, because the process of sagging cannot be avoided. It is necessary to fix the sprocket bar, first remove the protective cover and the spark plugs, and then you will need to pull the air filter. The next step is to install the stopper in place of the spark plug. The main task of the stopper is to fix the piston. Then turn the clutch disk in the direction of the clock hand. For this purpose, you can use a special wrench, or a universal wrench designed for angle grinder.

Make sure that the piston is in its outermost position. When looking at the spark plug hole, the piston should be at the bottom. Once the piston is locked in place, it is allowed to start clamping the drive sprocket. The final step is to assemble all parts in reverse order.

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