The chain on the chain saw does not tighten

chain, does, tighten

Tip from STIHL. Tighten the chain correctly!

Timely adjustment of saw chain tension not only increases operator safety, but also prevents excessive sagging of the chain itself and chain damage. Chain tensioning and adjustment should be carried out before starting work or if absolutely necessary. The chain heats up when the saw is in operation and slowly but surely stretches and needs readjustment from time to time. STIHL chains are pre-stretched during production, so they stretch very slowly during operation.

How to tension the saw chain correctly? Most STIHL chain saws have a side chain tensioning screw that can be used to make adjustments in no time. To do this, switch off the engine and loosen the side cover screws, see “Chain tensioning”. figure 1. Take the screwdriver and turn the tensioning screw to tighten the chain, at the same time pulling and pulling the chain lightly along the bar, while taking care not to hurt your hand on the sharp prongs, so this operation is best done with gloves, see. Figure. 4. A correctly tensioned chain must not hang down the bottom of the bar, see Fig. fig. 3, but at the same time when pulling it back, you should not exert too much force. Some STIHL chain saw models are fitted with a quick tensioning device to tension the chain quickly and without tools. fig. 2. To tension the chain, simply loosen the large thumbscrew and loosen the cap and turn the black knob by hand, until the chain is correctly tensioned. Then re-tighten the side cover on the drive sprocket with the special screw by hand, and the chainsaw will automatically self-tension itself for operation. Before installing a new chain, it is absolutely necessary to clean any dirt from the groove on the bar. Dirt accumulated in the groove prevents proper lubrication of the chain and the bar, and this causes the bar and the chain to overheat during operation without being cleaned. The ideal tool for cleaning grooves is an ordinary screwdriver or other suitable tool.

Important! Never adjust the chain when the chain is cold and never when the chain is hot or warm! If too much tension is applied when the chain is cold and still compressed, it can cause serious problems with the saw bar and headset. That’s why you should even loosen the chain just a little bit before you start work, for example, in the case of frostbite.

Experienced craftsmen recommend the use of profile shortening equipment. This allows a quality job to be done and prevents breakage during subsequent use of the tool.

Rivet punch

This is a mechanical device similar to a normal baler. Anvil, mounting grooves for saw heads with different tooth pitch included. Interchangeable tips for squeezing out rivets are available for convenience. Tool is designed for separating links only.

Riveting machine

Used in conjunction with the chain punch for riveting and rolling the saw chain at different pitches. The kerf depth of cut can vary from 1,1 to 2 mm. Included are rotating inserts, anvils marked A or B (difference in link pitch).

Mechanism of operation. the saw chain with a new link and fresh rivets is fastened in the guides. The section is then pressed against the built-in anvil by a roller, the motor is started. During rotation, it presses and crushes the rivet. The adjustment screw needs to be tightened slowly during the process. The advantage of a riveting-rolling machine is that the quality and strength of the rivets does not differ from the factory riveting, can withstand high loads.

Important! It is not practical to purchase machines for the home workshop. They are costly and are designed to work only on the chainsaw’s headset.

How the chain should be tensioned on the saw. Chain tensioning on a chainsaw. Why the chain must be tensioned

Buying a chainsaw, be prepared for the fact that you will have to master not only the skill of sawing logs and chopping trees, but also the repair of the tool. After studying the instructions, be sure to check for proper operation, in other words, test the tool. It is good if the work is straight and smooth, but it can be that the saw moves sideways, or it refuses to cut the log at all. The first thing experienced professionals always look at is the chain tension on the chainsaw.

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Why the Chain is Tightened While Working on a Chainsaw

How to tighten the chain on a chainsaw: Instructions and tips

Professionals know very well that it is not the strength of the chainsaw that makes it a good tool, but how well it is used. With proper care, any chainsaw can last a long time, showing excellent performance. If it’s the other way around. Failure to properly monitor the tool and adhere to safe operating practices will greatly reduce tool life and lead to early failure.

Chainsaw Troubleshooting: How to Keep The Chain From Coming Off The Bar |

One of the most important points of proper technical operation is to take care of the chain. You need to know how to tighten the chain on your chainsaw, how to grind it properly, and how to lubricate it. It is also very important to have an idea of its characteristics. This knowledge can be very useful if you need to choose a new chain.

Chain function and its proper tensioning

Proper positioning and tensioning of the chain is very important not only for proper operation, but also for the safety of the person working with it and around it. If the chain is not tensioned properly, it can fly off accidentally while you are working, which will most likely cause damage to not only the chain itself, but to the entire chainsaw. However, this is not desirable, even if the chain

is tightened too much. It can also have negative consequences in the form of increased stress on the engine, which will lead to its rapid failure in the future and shorten the overall life of the chainsaw.The chain has one very important property: it fixes the bar, which prevents it from moving arbitrarily. Therefore, special attention should be paid to the chain.

Choose the right chain

Chain failure is common, so before you ask yourself how to properly tighten a chainsaw, you need to know which chain is right for that model of chainsaw. The main criterion for selection is its pitch. Step. The distance between its teeth. The distance it is chosen between the nearest teeth is measured in inches. The most common are 0.325, 0.375, and 0.404 inch. Pitch information can be found in the instruction manuals for a particular model of chainsaw, and it depends primarily on the purpose of the tool.

Each saw has its own specific pitch, exceptions. it is only professional tools that are versatile. The chain pitch also depends on the power of the engine. The more powerful the chainsaw, the greater its pitch and the harder it is to hold when working. For example, the Patriot compact low-power chain saw has a pitch of 0.325. However, there are more powerful models. One of them is. German STHIL with a pitch of 0.404. This, as we can see, is more than the Patriot chainsaw.

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Step. one of the most important features of circuit parameters. This means that you should not choose a chain with a large pitch for a chainsaw with low power consumption. Not only can it fail, but the tool can also fail.

The importance of proper chain configuration

Normal chainsaw operation causes vibrations that can significantly loosen the tension of the chain with the blades or nuts designed to hold it in place. The chain stretches during heavy use and does not lock on the teeth of chain saws well, which can create unsafe conditions for the operator. Proper tool operation involves checking all nuts and bolts before and during use to ensure safety. If the chain nuts are too loose on the teeth of the saw, you will probably need to pull the chain out properly and then tighten the blade.

Always be mindful of your own safety and use protective leather gloves and safety glasses before you start. The chainsaw should be placed on a flat surface, such as a workbench or table. Before you use it, you should allow the engine to cool completely. Then, to prevent accidental starting of the saw, remove the wire from the spark plug. Now you can start to adjust the chain.

Changing the chain tensioner. Little tricks of the chinese chain saw. Little tricks of the Chinese chainsaw

The video discusses simple but effective chain saw tensioner conversions

How to pull the chain on a chainsaw with your own strength

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

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If so, further chain adjustment on the chainsaw may not be necessary. If not, you will 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 both blade jam nuts on the left side with the saw repair kit or adjustable wrench. Place the spark plug wire in place and press it firmly.

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Tools Needed

When you buy a chainsaw, it often comes with a tool to service it. The pattern needs to be adjusted. It looks like this: there’s a flathead screwdriver on one end and a screwdriver on the other end. A wrench that fits the blades. To understand how to sharpen a chainsaw chain, see. An instruction manual for this model of chain saw.

Safety Precautions

Personal protective equipment, including eye and hearing protection, leather gloves and a helmet, should be worn when using a chainsaw.

To ensure safety when working with a chainsaw, it is advisable to have another person around to help if necessary.

Sharpening Chains

Everyone knows that from time to time you need to sharpen the chainsaw chains. However, not everyone knows how to do it right. A sure sign that the saw needs sharpening. is the shape of sawdust. If they look like fine dust, it means that the chain saw blades have become blunt and need sharpening. When the chain is badly worn, when it cannot be sharpened, it must be replaced with a new one.

Chainsaw sharpening methods

There are many ways to do this. As examples, we give the most common ones:

  • Sharpening using a file. Its convenience lies in its simplicity because there is no need to use complex equipment and machines. In addition, this sharpening can be done directly at the workplace, which saves time.
  • Machine sharpening. It is most often used in equipped service centers or workshops, but it also has a place in a personal farm.
  • Sharpening with Bulgarian. One of the most difficult sharpening methods because it requires special skills. Because of this, this method is not widely used.

mcculloch chainsaw has a problem with a loose chain.

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How to shorten the chain on a chainsaw

The chain should always be in good technical condition. All faults and malfunctions must be given the necessary attention. Follow general safety instructions and recommendations in the instruction manual. Only in this way can you avoid injuries and other undesirable consequences when working with a chainsaw and extend its service life.

Sometimes the chain needs to be replaced or shortened due to wear, warping or other reasons. It should be noted that slack in the chain does not mean that it needs to be replaced. You must change it if it does not fully adjust.

Sometimes with heavy use, the chain can sag. This is due to severe overheating of the metal, its expansion and consequent elongation. The way out of this situation may be to stop periodically to allow the chain to cool. However, this is not always possible. Another situation may arise when, say, you need to install a chain that is somewhat long.

chain, does, tighten

Adjusting the tension

The tension in the chain must be adjusted by means of the chain tensioning bolt on the chain saw, which is located where the toothed bosses are located.

on the chain saw must be stretched. You don’t have to pull it completely because it can soon stretch again. The chain should have a small margin, a little slack. This is not easy to check by hand. It should be removed from the tire by a millimeter.

It is best when the chain is of sufficient length, and you can remove several of its links. This way we can use the original links for the chain. They can be undone with a metal hacksaw, but this will be much more convenient to do with sandpaper. To do this, you need to unwrap the link, copy it, and then cut off the part that is excessive. Next, we knock the rivets out of those links that are not needed, we remove them, and we connect the chain ourselves. You can use special rivets for this, but if they are not available, you can use regular steel wire. We put the chain on a sturdy base and start riveting on both sides.

How to tension the chain on a chainsaw

The chain on a chainsaw may need to be tightened or adjusted for the following possible reasons:

  • Putting a new chain saw into service. A newly purchased tool is usually delivered with the saw headset uninstalled. Accordingly, after reassembly, it is necessary to adjust the chain tension.
  • Changing the saw chain. Although chains come in a specific size, they vary in length. It is also handy to have several sharpened chains with you when you are working for a long time and these, too, tend to be of different lengths. Accordingly, it is necessary to adjust the tensioning after each replacement.
  • Sharpening the chain. 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 after reassembly it may need to be tightened.
  • Mechanical loads. When sawing, the chainrings are resisted by wood. This causes the chain to stretch and begin to sag over time.
  • Natural stretching. The chainsaw chain consists of multiple links connected to each other. natural wear and tear of chain parts over extended periods of use causes the chain to elongate.
  • Improper adjustment. If the chain is not tensioned correctly to begin with, immediately after the first sawing there will be sagging that has to be corrected.
  • Careless or improper use. When sawing wood, sometimes hard objects (nails, wires, other metal parts) get caught in the cut, the bar can get caught in the cut, or the tool is not used for its intended purpose. In all these cases, the chain is subjected to loads that cause it to elongate and begin to sag.
  • Poor chain quality. The lower the quality of the chain, the faster it will stretch and the more often the tension must be adjusted.
See also  Proper installation of the chain on the chainsaw

Tensioning Mechanisms

Before we learn how to tension a chainsaw chain correctly, we need to understand the mechanisms involved in performing this task. The tensioning adjustment is done with the classic version, represented by a bolt connection.

Professional chainsaws have adjustment devices that make it possible to adjust by moving the lever or turning the dials. If tensioners are used for tensioning, the degree of tightening is fixed by special contra nuts.

The chain must be tightened to a defined tensioning torque. It should not be overtightened, as this will cause it to break prematurely, and it should not be left loose. Adjustment procedures should only be carried out on the tool when it has cooled down. When the tool is hot, the chain is stretched, so the adjustment process will not be correct.

Negative consequences of improper adjustment include overheating it. Severe overheating wears out the links faster, blunts the teeth, and causes stretching, which eventually ends up requiring the purchase of a new part.

Algorithm of chain saw chain installation

Slow installation of the chain takes no more than 30 minutes if the parts are correctly and securely installed. The chain saw chain installation algorithm consists of 8 steps:

  • You need to prepare a flat surface. This avoids awkward mounting of parts and the chain, and minimizes loss of the fasteners. First, you must lay out the bar and chain parallel to each other.
  • Remove chain sprocket guard. For older models, the sprocket protection is fastened in the form of a wing nut, which is not difficult to unscrew. Newer chain saw models need a wrench (usually 10×10).
  • The chain saw drive sprocket at the base of the guide bar must be unscrewed all the way to the right.
  • Put a link on each securing groove of the guide bar in consecutive order (link by link). The chainsaw chain is mounted on top of the guide bar so that the bar is always on top while the chain is on the bottom.
  • Install the guide bar and the chain on the drive sprocket.
  • Put the sprocket cover back on. During installation, it is important to make sure that the sprocket itself stands flat and without play.
  • Check the position of the guides, which should be in special troughs.
  • Check that the chain is fastened in the bar and in the chainsaw.

After finishing this algorithm, all that is left is to tension the chain itself. But before you go on with this procedure, you should make sure that the chain is in the correct position. Otherwise you will either have to repeat the algorithm all over again (up to and including disconnecting the guide bar and the chain).

Necessary tools and equipment for tightening the chain on a chainsaw

In order to properly tighten it, you need to know some simple mechanisms and simple tools. With STIHL chain saws, tensioning is easy with a built-in chain tensioner. This method is the easiest and quickest way to tighten the chain. To tension or adjust the degree of slack in the chain, the manufacturer recommends doing the following:

  • Use the wing nut to unscrew the sprocket cover;
  • by rotating the adjusting wheel, determine the necessary length of the chain, tensioning it to the desired degree;
  • the sprocket cover is closed again and the chain is securely fastened to the bar.

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

  • an angle grinder with a metal disc;
  • Allen wrench, 5 mm in diameter;
  • a piece of wire;
  • A wooden stick or a strong chip;
  • flat screwdriver.

After having switched off the electric saw unscrew the screws with an allen key, remove the housing cover, unscrew the tensioning screw with a screwdriver and take out the rod-nut. The side of the screw adjacent to the body of the saw is ground with a disc. Then the saw is assembled in reverse order. The brush is required to clean the housing from sawdust.

How to tension the chain on a chainsaw correctly:

Chainsaw saw element replacement

If you need to replace the chain on your chainsaw, follow these steps.

    Take off the cover that covers the sprocket. For this purpose it is often necessary to unscrew the fastening nuts.

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