Chainsaw saws crooked reason and what to do

How to fix the basic malfunctions of a chainsaw with your own hands

Despite the simplicity of the chainsaw design, in the event of interruptions in its operation, and sometimes even with a complete failure of the unit, it is rather difficult to find the cause of the problem. Of course, an experienced craftsman will immediately be able to determine what led to a particular failure. But an ordinary user, in order to find the malfunction of the chainsaw and make repairs with his own hands, will need to study the symptoms that are inherent in this or that breakdown.

The chain dulls quickly

chainsaw, saws, crooked, reason

Chainsaw engine malfunctions

The engine is the main unit of a chainsaw, and most of the breakdowns that occur in it are associated with a gasoline drive. Correct diagnostics can determine the causes and remedies for malfunctions, even for an unprepared user.

The main problems with starting the engine can be as follows:

  • the engine does not start;
  • works unstable;
  • a start occurs, after which the unit immediately stalls;
  • stalls under load.

Chain wedges

This happens when the drive or driven sprocket wears out. The chain usually starts to wedge under load. But without load, the saw can rotate. The photo below shows a worn chain saw drive sprocket.

The next photo shows that the reason why the chain wedges must be sought in the location of the driven sprocket.

But what to do if the chainsaw is completely jammed and all attempts to pull the starter are ineffective? Such a malfunction sometimes occurs on Chinese-made chainsaws. It is caused by the bolts that have loosened from vibration, which screw the engine to the plastic casing of the unit. These bolts are located directly under the flywheel (magneto). In the photo below, the arrows show the location of the problem bolts.

When they twist, they begin to rub against the flywheel and can completely wedge the chainsaw. The following photo shows a flywheel with existing bolt scuffs.

To eliminate the malfunction, you will need to remove the flywheel from the engine shaft and tighten the bolts.

The tire is not getting oil

Usually, if oil does not flow to the chainsaw chain, it is required to check the channels through which the oil is supplied to the tire and clean them of contamination. If the previous steps did not find the cause of the problem, then you will have to check the oil pump. For this you need:

  • remove part of the chainsaw cover;
  • remove the clutch;
  • unscrewing 3 screws, remove the cover that hides the pump;
  • reach the worm gear that rotates the pump shaft.

If the thread on it is worn out, then the shaft does not rotate, the pump does not work, the chain is not lubricated. The worn gear must be replaced. You can also pull out the oil pump itself and manually try to pump oil through it. If it does not pump, the pump should be replaced.

Chainsaw oil filter

Remember to remove the oil filter from the reservoir and clean it if necessary.

Also, the lack of lubricant may be due to its leakage. It should be checked how tightly connected the pipes coming from the oil pump. If the tightness is broken, the tubes are replaced with new ones.

The chain doesn’t stop

If, when working with a chainsaw, you notice that the saw chain does not stop at the right time, then this breakdown may have 2 options.

  • The brake band is dirty. When the saw is in operation, dirt, sawdust, dust, etc. can get under the belt. As a result, the brake mechanism is locked and the chain does not stop when the throttle is released. The problem is eliminated by cleaning this unit.
  • The brake band is worn out. It is necessary to replace this element of the brake system.

The chain does not spin

This trouble often haunts inexperienced owners of chainsaws. They forget to release the brake after starting the engine. As a result, the chain does not spin, the brake system overheats, and the clutch mechanism fails. The problem is solved by removing the saw from the brake. If the clutch is not burnt out, you will notice chain rotation. Otherwise, the clutch mechanism will need to be replaced.

Why does the chainsaw go sideways?

It is worth considering the consequences that have to be faced if the chainsaw does not cut well. If you, for example, are engaged in the harvesting of wood fuel, then the curves of the finished chocks, due to the uneven surface, will complicate the process of splitting them into logs. If you are laying a log house, then curved bars cut with a saw, which go sideways, cannot be used, since the ends will be sloppy during laying.

But these are not the worst consequences, given the fact that the bus offset leads to:

  • imbalance, and hence to discomfort when using the saw;
  • decrease in tool performance;
  • increase in fuel consumption.

The tire also deteriorates, which cannot but upset especially those who have a premium expensive saw headset, which will have to fork out to replace.

So why the chainsaw saws crookedly, the reason is one or several?

  • saw blade teeth are unevenly sharpened;
  • the wrong bus or chain is used (they work badly together);
  • the saw head is worn out.

Why does the chainsaw cut crookedly? There is a solution!

Many chainsaw owners know that when working with a tree whose diameter exceeds 30 centimeters, cutting the material is accompanied by a curvature of the tire, which seems to be pulled to the side. The problem becomes apparent as the diameter of the barrel increases when operators use the “double cut” technique (cutting from the top, then flipping the barrel and making a second cut to finish the material to the end). If the chainsaw cuts crookedly, the cause must be identified immediately.

Teeth are unevenly sharpened

Let’s consider the first reason. Those powertrain operators who have read the instructions carefully know that the teeth grind at the same distance. And it doesn’t matter which side they are on. Everyone who remembers this rule when sharpening saves himself from problems in the long run, from the problem of uneven sawing of wood material.

As soon as you notice that the saw is being pulled to the side, check the chain teeth. It is highly likely that it is an illiterate sharpening that is the cause of the problem.

Inexperienced operators of chainsaws or those who use a file rarely control the length of the teeth. Even the notorious technique of counting the movements made when filed a single tooth does not help. Why? Because the chain wears out unevenly, which means that on certain teeth it will take more or less file movements to sharpen the best quality (all teeth were even).

How do I fix this problem? Learn to sharpen the chain correctly, do it on time. It is necessary to get in the habit of checking the teeth for wear, and if damage is found, it is recommended to resort to using a special sharpening machine. You can really get this one yourself. It is these machines that are used in workshops, where, for a certain fee, the teeth of the tools will be made identical, one to one.

Why is this particular method effective? Because all sharpening will be done on the smallest tooth, the one that has been subject to wear. This is a guarantee that in the end each tooth will be the same.

If you want to learn how to properly work with a chainsaw chain, contact a professional. Or learn how to sharpen the chain correctly on the machine.

There is, of course, one unpleasant nuance. It is necessary to take into account the fact that you grind on this device even those teeth that have not been damaged, and this leads to a decrease in the resource of the saw headset. To minimize the need for low-wear teeth sharpening, make sure that no metal parts such as nails fall under the chain when working with wood (this happens with old boards).

Using an unsuitable saw headset

Many operators forget that it is not only the chain that has the characteristics, the guide bar also has those critical characteristics. An important characteristic worth remembering is the width of the groove for mounting the chain. On average, a range of widths from 1.1 millimeters to 1.6 millimeters are distinguished.

What happens if you use a chain that has a width of 1.1 millimeters. In this case, you will install the chain on the guide bar, the groove width of which is 1.3 millimeters. When installing, be sure to adjust the chain tension, after which you are unlikely to notice something amiss. But as soon as the chain is loose, the difference in the gap widths will make itself felt. These 0.2 millimeters will not allow the chain to move along the guide bar as evenly as possible; when rotating, it will tilt to the side, which will cause the curvature of the cut.

When purchasing a replacement chain, be guided not by the model of the tool and the manufacturer of the power unit, but by its exact characteristics, taking into account the characteristics of the guide bar. Remember, on identical models of chainsaws, you can install tires with different widths of landing, which means that you will need different chains.

Not sure how to determine the landing width? It is easy to do it using a vernier caliper.

What to do if the chainsaw goes to the side for this reason, but the tire has not had time to wear out? Replace only the chain. If you ignored the problem for a long time, the guide bar was damaged because of this, you will have to change both. Only the installation of a new set will solve the problem of a crooked cut.

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Saw head is badly worn

Did you notice a cut along the curve? It is likely that the saw headset has worn out a lot. How can you be sure that this is the case? A visual inspection is sufficient. Remove the tire and examine its flatness at the point of contact with the cutting element. Examine this area from the end to be able to closely examine the seating groove. In relation to the groove, assess the condition of both sides of the bar. If the saw is used correctly, the wear on both sides will be even. But more often than not, one side is grinded faster, which leads to a crooked cut. Only replacing the worn edge will help to eliminate the defect.

Important! The wear will be even if you listen to the recommendations of the manufacturers and periodically turn the tire over. True, not all owners of chainsaws can use this trick, since sometimes the tire has markings, according to which, it can be installed only in one position.

When you have identified the cause of the problem with the curvature of the cut, identified increased wear, diagnose the lubrication system so that after repairs you will not encounter an identical problem. Experienced powertrain service technicians know that if the lubrication mechanism works correctly, the likelihood of (uneven) wear is minimized.

If solving the problem with the chain using machine tools is not possible, pay attention to the recommendations. how to sharpen the chainsaw chain with a file.

Careful maintenance of the tool, regular checking of the main components of the device, allows you to quickly find a malfunction. And since the nodes are interconnected in a chainsaw, the quick elimination of one problem reduces the chances of others.

CHAIN SAW CUTTING CROOKED?, THIS WILL HELP.

If the saw head is incorrectly selected

Often, most sawers simply do not pay attention to the fact that not only the chain has technical characteristics, but also the tire and the drive sprocket with a crown. All these details must correspond to each other in such a technical parameter as a step. Most chainsaws are equipped with a headset with standard pitch parameters equal to 0.325. The tire, chain and drive sprocket, or rather the crown, must have the same pitch. If one of these parts does not meet one standard, then this will lead to accelerated wear of individual parts and the entire tool.

The tire also has such a parameter as the groove width. The value of this value can vary from 1.1 to 1.6 mm, depending on the power of the tool. It is categorically contraindicated to install a tire with a groove width of more than 1.3 mm on a household chainsaw. A standard chain in such a tire will have too much play, which will lead to accelerated wear of both parts.

Never buy an instrument headset if you don’t know or remember the exact measurements. A “like this” chain, bar or sprocket may be far from suitable for your tool, and as a result, you will need to change all consumables. To find out the width of the tire, you will need to use a caliper or look in the technical description for the tool.

The main reasons why the chainsaw is misdirected

If the chainsaw starts to cut crookedly during operation, then in addition to an uneven cut, we get a number of the following negative consequences:

  • It is necessary for the sawyer to exert physical effort to keep the tool in a straight direction.
  • Fuel consumption increases, which is associated with an increase in the trajectory of the tool passing through the material being cut
  • Increased load on the drive sprocket, which leads to accelerated wear
  • The tire wears out as the load only increases on one side
  • Decreases tool performance
  • Obtaining a cut curve. If the forest is being prepared for the manufacture of boards, then crooked trunks are equated to scrap. If the tree is cut for firewood, then as a result, the curved-sawn log will not be very convenient to chop
  • Discomfort during work. the master gets tired quickly, working with a faulty tool

Why can a chainsaw cut trees crookedly? Many people might think that the reason is a malfunctioning chainsaw tire, but in fact, there are four main reasons:

  • Incorrect or uneven sharpening of the teeth
  • Using a chain, bar or sprocket that does not match in pitch
  • Saw head wear. this is often due to abrasion on one side of the bar
  • Untimely tightened chain

If such a malfunction occurs, such as uneven cutting of wood, then it is necessary to resort to its elimination as soon as possible. If you continue to operate the tool with such a malfunction, this will lead to engine wear and the need to repair it.

Let’s consider each type of malfunction separately, and find out how to determine what is the reason why the chainsaw is sawing on its side.

When the chain is loosened and how dangerous it is

Every chainsaw needs to be tensioned regularly. If this rule is not followed, then the consequences can be very traumatic. Most sawers know what this is about and how to properly tension or tighten the chain. Correct cutting attachment tension. when trying to pull it away from the tire, three shanks are fully visible, as shown in the photo below.

If the chain is slack or over-tensioned, it will wear out the bar. And not only the guide, but also the sprocket, bearing and motor. That is why make it a rule to check the chain tension before using the tool.

Severe saw blade wear

The tire lasts much longer than the chain. However, this does not mean that you can exploit it forever, and not think about replacing it. Usually the guide changes after 2-3 worn chains. Before replacing the chain saw guide, you need to assess its technical condition. If a Chinese-made tire is installed on the chainsaw, then it can wear out faster than the chain. That is why, if a sawing curve is detected with a chainsaw, it is necessary to diagnose the tire.

Remove and inspect the tire to be sure it is worn out. Usually, wear is manifested by a shortened one of the sides. Sometimes it is extremely difficult to detect this visually, so you need to use a caliper. A difference of a few tenths of a mm indicates that the tire needs to be replaced. There is also an easy way to check rail wear with a square. To do this, the tire is located on a flat surface, and a square must be attached to it from the side. If the top and bottom walls of the guide are in contact with the square, then the part is in good order.

Accelerated tire wear can occur due to a malfunctioning oil pump. If the lubricant is supplied with long interruptions, then friction increases accordingly, which means that the parts wear out faster. If the lubrication mechanism works properly, then this significantly increases the service life of not only the headset, but also the entire tool.

Curved sawing due to uneven sharpening of the teeth

If the tool cuts to one side, the first step is to check the chain. The teeth on the tool should not only be sharp, but also properly sharpened. Correct sharpening is when each tooth is grinded at the same distance as the previous one. This sharpening method eliminates chain imbalance during sawing. The instructions for the tool indicate that each tooth must be ground at the same distance when sharpening. If this requirement is not met, then in addition to the fact that the chainsaw will be taken to the side, it is possible that the load on the engine will increase.

If the teeth were sharpened by a beginner, then after the work done, you should make sure that it is correctly implemented. Some sawers rely on a simple rule. file sharpening should be done in the same amount for each tooth. However, this assumption is not true, since the chain teeth wear unevenly. As a result, it turns out that the sharpening of each tooth leads to the restoration of their sharpness, but not the uniformity of wear. When the saw starts to cut crookedly, you need to check all the teeth on the chainsaw for sharpening and even wear.

To eliminate uneven chain wear, you should sharpen the teeth in a timely manner, that is, sharpen with a file every 15-20 hours of operation. Once every 2-3 months (depending on the frequency of use of the tool), sharpen using a special machine.

If you are not sure that you are sharpening the chain teeth correctly, then you should entrust this work to a professional. Although this is a costly business, it is much more efficient. If you want to learn how to sharpen a chainsaw chain correctly, then this material contains detailed instructions for beginners.

Why the chainsaw cuts crookedly. we determine the malfunction and fix it

The chainsaw is a truly unique tool that makes felling and sawing wood easier. The main advantage of this tool is a quick set of maximum speed, as well as the ability to instantly brake the chain. During the operation of the tool, various malfunctions occur, and one of them is an uneven cut. If the chainsaw cuts crookedly, then this causes inconvenience to the sawer, and also consumes a large amount of fuel. If you are faced with such a malfunction, then in this materials you will learn how it can be identified and eliminated.

Tire wear. how to troubleshoot belt faults

If the guide has uneven wear on both sides, it is recommended to replace it. However, there is a way to restore a part, which requires a minimum set of necessary tools. Leveling is done with an angle grinder and a grinding wheel (not a cut-off wheel). First, we check the tire, and make sure that it has uneven wear. How to check the wear of the guide, already mentioned above.

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Next, consider the instructions on how to eliminate uneven wear on the guide:

  • Install a grinding disc into the spindle of the angle grinder, and then fix the angle grinder in a vice
  • Make a flat surface on which the guide will be located. It is recommended to use a piece of chipboard as a surface, which must be fixed with a clamp.
  • Lean against a square and align the wiper blade with the surface.
  • Start aligning the tire. To do this, we place it on the surface, turn on the angle grinder, and carry out its longitudinal movement
  • When aligning the guide, it is important to keep it moving at a uniform speed. Sewing is necessary until both edges are the same size. The check must be done with a square.

over, the alignment must be done for both sides of the tire. After finishing work, you can install the headset on the tool and check. It is important to note that aligning a guide that has uneven wear on one side is only appropriate if the groove is deep enough to pass the chain shank. If the groove becomes shallow, then the tire must be replaced.

As you can see from the material, there are many reasons why a chainsaw cuts crooked. However, even a beginner can find this cause and eliminate it, if you approach the solution of this issue appropriately. Start the check in order, as indicated in the description, and you will definitely identify the reasons that can be eliminated in different ways.

Uneven sharpening of teeth

The instructions for chainsaws say that all teeth are grinded at the same distance, and it does not matter which side. And the masters who know this rule will never face this problem.

If in recent time, before the appearance of curvature, sharpening was carried out, then with a high probability it was incorrect.

To prevent this from happening, it is better to learn how to sharpen the chain yourself. This must be done in time, until the teeth are shorter than one another. This situation complicates the situation. It is best to check the teeth for wear after each use.

Why the chainsaw saws crookedly and how to quickly solve the problem yourself

Many people who have a chainsaw face a problem. And the whole point is not in the inability to handle the instrument. The reason is difficult to determine by yourself.

Experienced craftsmen immediately see what is wrong and give their advice to beginners. After studying specific signs, you can understand what was fundamental in this situation.

  • Why the chainsaw began to cut crooked?
  • Saw head is worn out
  • Uneven sharpening of teeth
  • Using the wrong chain

Why the chainsaw began to cut crooked?

There are only 3 reasons why the chainsaw goes to the side when cutting:

  • Uneven sharpening of teeth.
  • Accelerated wear of the saw blade.
  • Using the wrong chain.

Malfunctions are manifested by the saw making a curved cut. This is fraught with many consequences. If the cut of a tree goes to the construction, then no one will accept it with curves and this will entail losses.

With this work, the tire deteriorates at the saw, which can be replaced later. But for expensive models of chainsaws, tires are very expensive, it is difficult to change them and few people want to mess with it.

Saw head is worn out

It happens that over time, parts that are subjected to strenuous work wear out. This is a normal process if it does not happen in a short time.

To be sure of the detected problem, you need to remove the cutting element and examine the plane below it. Especially carefully it is necessary to examine from the end, since there it is most likely that the problem will be found.

In relation to the seat groove, it is assessed how the tire has worn on both sides. With proper operation, the tire wears out evenly.

In order for the tire to grind evenly, it is necessary to turn it over periodically.

After removing the old tire, the lubrication system is also checked. Since with insufficient lubrication of the elements, excessive friction occurs and accelerated wear is inevitable.

Using the wrong chain

The tire of the chainsaw has several nuances. One of them is the width of the chain groove. It can be completely different.

If you take a chain with a 1.3 mm fit as an example and put it on a rail with a step of 1.5 mm, then pulling the chain, you may not notice the difference. But when the tension weakens a little, then 0.2 mm will lead the chain to one side, and the saw cut will again become crooked.

The same brand may have models with different step widths, so you cannot rely on the name alone.

If the instructions are no longer there, then you can check the dimensions with a caliper.

A quick response to a problem will lead to an easier resolution. As soon as the first signs were noticed, it is worth immediately eliminating the malfunction. Because an unrepaired breakdown in time will lead to even more troubles.

Severe saw blade wear

The tire lasts much longer than the chain. However, this does not mean that you can exploit it forever, and not think about replacing it. Usually the guide changes after 2-3 worn chains. Before replacing the chain saw guide, you need to assess its technical condition. If a Chinese-made tire is installed on the chainsaw, then it can wear out faster than the chain. That is why, if a sawing curve is detected with a chainsaw, it is necessary to diagnose the tire.

Remove and inspect the tire to be sure it is worn out. Usually, wear is manifested by a shortened one of the sides. Sometimes it is extremely difficult to detect this visually, so you need to use a caliper. A difference of a few tenths of a mm indicates that the tire needs to be replaced. There is also an easy way to check rail wear with a square. To do this, the tire is located on a flat surface, and a square must be attached to it from the side. If the top and bottom walls of the guide are in contact with the square, then the part is in good order.

Accelerated tire wear can occur due to a malfunctioning oil pump. If the lubricant is supplied with long interruptions, then friction increases accordingly, which means that the parts wear out faster. If the lubrication mechanism works properly, then this significantly increases the service life of not only the headset, but also the entire tool.

Why the chainsaw saws crookedly, and how to quickly solve the problem

Many chainsaw owners know that when working with a tree whose diameter exceeds 30 centimeters, cutting the material is accompanied by a curvature of the tire, which seems to be pulled to the side. The problem becomes apparent as the diameter of the barrel increases when operators use the “double cut” technique (cutting from the top, then flipping the barrel and making a second cut to finish the material to the end). If the chainsaw cuts crookedly, the cause must be identified immediately.

The main causes of a crooked chainsaw saw

If the chainsaw starts to cut crookedly during operation, then in addition to an uneven cut, we get a number of the following negative consequences:

  • It is necessary for the sawyer to exert physical effort to keep the tool in a straight direction.
  • Fuel consumption increases, which is associated with an increase in the trajectory of the tool passing through the material being cut
  • Increased load on the drive sprocket, which leads to accelerated wear
  • The tire wears out as the load only increases on one side
  • Decreases tool performance
  • Obtaining a cut curve. If the forest is being prepared for the manufacture of boards, then crooked trunks are equated to scrap. If the tree is cut for firewood, then as a result, the curved-sawn log will not be very convenient to chop
  • Discomfort during work. the master gets tired quickly, working with a faulty tool

Why can a chainsaw cut trees crookedly? Many people might think that the reason is a malfunctioning chainsaw tire, but in fact, there are four main reasons:

  • Incorrect or uneven sharpening of the teeth
  • Using a chain, bar or sprocket that does not match in pitch
  • Saw head wear. this is often due to abrasion on one side of the bar
  • Untimely tightened chain

Teeth are unevenly sharpened

If the tool cuts to one side, the first step is to check the chain. The teeth on the tool should not only be sharp, but also properly sharpened. Correct sharpening is when each tooth is grinded at the same distance as the previous one. This sharpening method eliminates chain imbalance during sawing. The instructions for the tool indicate that each tooth must be ground at the same distance when sharpening. If this requirement is not met, then in addition to the fact that the chainsaw will be taken to the side, it is possible that the load on the engine will increase.

Unevenly ground teeth are the most common crooked cut problem.

Using the wrong chain

It’s no secret that a chainsaw tire, like a chain, has several main characteristics, one of them is the width of the groove for installing the chain. The groove width can have several basic dimensions:

  • 1.1 mm;
  • 1.3 mm;
  • 1.5 mm;
  • 1.6 mm.

Imagine that we take a chain with a width of 1.1 and place it on a bar with a 1.3 mm groove. Initially, having tightened it well, we may not notice the differences, but as soon as the tension loosens a little, a gap of 0.2 mm will prevent it from moving evenly along the tire, it will tilt to one side and we will again get crooked sawn material.

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When buying a replacement chain for a chainsaw, name its exact dimensions, not the make and model of the chainsaw. On the same models of chainsaws, different tires can be installed and, accordingly, the chains will also differ.

Check the width of the chain, you can use a vernier caliper.

To eliminate the malfunction, if the chainsaw tire has not yet been badly damaged and there is no uneven wear on it, only the chain will need to be replaced. If it already shows wear, a completely new kit must be installed.

How to avoid improper sharpening

In order to prevent the curve cutting due to uneven sharpening, you can use a special sharpening machine from time to time or with severe damage to straighten the chain. Buy a machine and sharpen it yourself or send it to a workshop for sharpening.

The fact is that during sharpening, the machine is adjusted according to the most worn tooth, which has the smallest size among all. After sharpening, all teeth will have the same size, which will be equal to the tooth on which the adjustment was made.

The disadvantage of this method is that the resource of the chain is significantly reduced, since even undamaged teeth have to be heavily grinded. Try to use your chainsaw more carefully, watch out for nails and any other metal products that may come across when cutting old boards and other junk.

When the chain is loosened and how dangerous it is

Every chainsaw needs to be tensioned regularly. If this rule is not followed, then the consequences can be very traumatic. Most sawers know what this is about and how to properly tension or tighten the chain. Correct cutting attachment tension. when trying to pull it away from the tire, three shanks are fully visible, as shown in the photo below.

If the chain is slack or over-tensioned, it will wear out the bar. And not only the guide, but also the sprocket, bearing and motor. That is why make it a rule to check the chain tension before using the tool.

Careful maintenance of the tool, regular checking of the main components of the device, allows you to quickly find a malfunction. And since the nodes are interconnected in a chainsaw, the quick elimination of one problem reduces the chances of others.

Why a sharp chain saw cuts crooked or bindes in wood.

How to avoid improper sharpening

In order to prevent the curve cutting due to uneven sharpening, you can use a special sharpening machine from time to time or with severe damage to straighten the chain. Buy a machine and sharpen it yourself or send it to a workshop for sharpening.

The fact is that during sharpening, the machine is adjusted according to the most worn tooth, which has the smallest size among all. After sharpening, all teeth will have the same size, which will be equal to the tooth on which the adjustment was made.

The disadvantage of this method is that the resource of the chain is significantly reduced, since even undamaged teeth have to be heavily grinded. Try to use your chainsaw more carefully, watch out for nails and any other metal products that may come across when cutting old boards and other junk.

Why the chainsaw is being pulled aside

Discomfort during work, a decrease in productivity, an increase in fuel consumption, a curve cut, these are all negative consequences of this phenomenon, and what is the reason?

There are actually only three reasons:

  • Uneven sharpening of teeth;
  • Using a circuit that does not meet the bus parameters or vice versa;
  • Increased wear of the chainsaw saw headset.

Uneven sharpening

According to the instructions for sharpening the chains, the teeth should be grinded at the same distance, and regardless of which side they are located on. Observing this simple requirement, you can protect yourself from the problems associated with the fact that the chainsaw is taken away when sawing.

Unevenly ground teeth are the most common crooked cut problem.

When sharpening the chain with a file, it is not always possible to control the length of the tooth using the technique of counting the number of movements with a file.

This is due to the fact that the wear of the teeth is uneven, some are damaged more and more movements are required with a file in order to bring them back to normal, which means the size of such teeth will decrease significantly compared to the rest.

Why does the chainsaw cut crooked

When working with a chainsaw, in some cases you can see how when cutting a tree trunk with a diameter of more than 30 cm, the tire gradually starts to go sideways. This is especially noticeable when it is necessary to cut large diameter trunks using the double-cut technique, that is, first sawing from above, and then turning over and finishing to the end.

Lumps, crookedly sawn off with a chainsaw, have an uneven surface, this causes some discomfort when they are split into logs. And the use of such a chainsaw when laying a log house, for example, for trimming bars, is not at all permissible, since the ends will be uneven.

  • Why the chainsaw is being pulled aside
  • Uneven sharpening
  • How to avoid improper sharpening
  • Using the wrong chain
  • Increased wear

Using the wrong chain

It’s no secret that a chainsaw tire, like a chain, has several main characteristics, one of them is the width of the groove for installing the chain. The groove width can have several basic dimensions:

  • 1.1 mm;
  • 1.3 mm;
  • 1.5 mm;
  • 1.6 mm.

Imagine that we take a chain with a width of 1.1 and place it on a bar with a 1.3 mm groove. Initially, having tightened it well, we may not notice the differences, but as soon as the tension loosens a little, a gap of 0.2 mm will prevent it from moving evenly along the tire, it will tilt to one side and we will again get crooked sawn material.

When buying a replacement chain for a chainsaw, name its exact dimensions, not the make and model of the chainsaw. On the same models of chainsaws, different tires can be installed and, accordingly, the chains will also differ.

Check the width of the chain, you can use a vernier caliper.

To eliminate the malfunction, if the chainsaw tire has not yet been badly damaged and there is no uneven wear on it, only the chain will need to be replaced. If it already shows wear, a completely new kit must be installed.

Increased wear

If the chainsaw cuts crookedly in an arc, the reason may be excessive wear on the saw headset. You can check by conducting a visual inspection of their contacting surfaces. To do this, the tire must be removed from the chainsaw and look at its contact plane with the chain from the end, positioning it at eye level so that the landing groove for the chain is fully visible.

With this inspection, you can visually assess the wear on the left and right side of the tire in relation to the groove. As a rule, the wear on the edges should go evenly, and if one side is worn down more, in order to eliminate the malfunction, it is necessary to replace the defective one with a new one.

For even tire wear, some manufacturers recommend flipping it over from time to time. But it is worth remembering that not for all headset models, this recommendation is correct, since many manufacturers indicate the direction of movement of the chain along it on the surface of the tire, and, accordingly, such a part can only be installed in one position.

The figure below shows several views, the upper one has the direction of installation of the chain, as indicated by the icon on the tip of the tire and the direction indicator.

Experienced masters of service centers for the repair of chainsaws, if increased wear is detected, they advise to carry out a complete diagnosis of the lubrication system of the saw headset, since with a properly working lubrication system and installing a chain corresponding to the chain of the chainsaw, this phenomenon should not be observed, therefore, the oil supply system can have faults or incorrect adjustment.

If, when working with a chainsaw, you observe a curve cut, the first thing you should pay attention to is the correspondence of the chainsaw chain to its tire. If everything is normal, check the sharpening of the teeth and tire wear, in case of increased wear, check the operation of the lubrication system, since the problem may lie in it. And the main thing to remember is that in a chainsaw everything is interconnected and the use of low-quality oils for lubricating chains can cause premature wear and loss of the chainsaw’s performance.