Causes of chain saw’s bad sawing
You give the gas, the engine responds, but then tries to stall, t. К. I am not an expert on how to do it myself.Yes by the way the chain turns tight but the chain does not work. The chain on the tire is not. If there is no unusual noise (knocking, grinding, etc.) when trying to start the chainsaw.д.) very often it turns out that the breakage is not really there. For example, if you do not start up the chainsaw correctly and pull on the nozzle for a long time, the engine just floods and it is very hard to start it.
To properly start the cold chain saw engine, set the lever or switch to the flap closed position. Then you have to pump the mixture into the carburetor if you have a fuel pump. Pull the starter grip until you feel resistance from the engine and pull vigorously to the side. After two or three such motions the engine should first start and then stall. If it doesn’t, you’ll have to take the lever to the half throttle position or just the work position and go on starting the chain saw in that mode. In many chainsaws the “half throttle” is locked automatically when the choke is pulled
Some models have an ignition key switch, it’s important to make sure it’s turned on
If the engine won’t start, the first thing to do is to unscrew and inspect the spark plug. The chain should not move when idling; the chain saw will lose power or not move at all. There are cases, when starting in the cold season, fill the combustion chamber with fuel. Then too, you need to unscrew the spark plug, dry the combustion chamber with an idle start, clean the spark plug, screw it back in and repeat the start. If the chainsaw is not running, the chain does not turn as a result. It is desirable to check at once availability of spark. on unscrewed plug we put on a cap with a high-voltage wire, we put it on a cylinder and we jerk the starter. Visually see frequent blue spark that’s good. Screw the spark plug in place and start the engine. If there is no spark, change the spark plug and try again. Again no. check connection of high-voltage wire to the spark plug, coil and ignition system.
In general, it is possible to judge the malfunction by the condition of the spark plug.
- Dry. Most likely, the fuel mixture is not getting into the cylinder. It’s not the ignition system, so screw the spark plug back in and check the fuel system.
- Wet, heavily spattered with fuel. The cause of excessive fuel mixture lies either in violation of the starting rules, as described above, or in improper adjustment of the carburetor.
- Covered with black carbon residue. This can indicate the use of low-quality oil, a misadjusted carburetor or an incorrectly calculated petrol to oil ratio. The spark plug should be washed, cleaned of sludge with a sharp object (an awl or a needle), wiped with an emery cloth over the electrodes and replaced.
Checking the spark plug, you need to pay attention to the gap between the electrodes: the normal is considered from 0.5 to 0.65 mm. Damaged or worn gasket should be replaced
How to saw with a chainsaw correctly and smoothly? Tree sawing tips
If you have decided to buy a chainsaw or you already have one, you will need to learn all the specifics of working with this tool. With a successful purchase and work, working with a chainsaw will be safe and bring you one pleasure.
Classes of chainsaw devices
Currently on the Russian market, all chainsaws can be divided into three main classes:
- Normal home appliances that are designed for light-duty jobs. These chainsaws are not very powerful, but they handle their job just fine. With these chainsaws you can easily prepare wood for the bath or cut down unnecessary wood. The low weight and ease of operation make up for its capabilities.
- Semi-professional chainsaws are designed for everything from repair and construction work to felling wood. But they do have one drawback. They cannot be used eight hours a day. This is why they are called semi-professional. These devices are typically used by loggers for delimbing.
- Professional chainsaws specialize in logging. They can be operated for 10 to 16 hours a day and can be used for up to seven hours without shutting down.
Safety precautions when working with a chainsaw
This question occurs to everyone who has recently purchased this tool. And many people don’t read the instructions, relying on their theoretical experience and knowledge. And it’s one of the critical mistakes that can break the chain or cause serious injury. Safety precautions must always be followed.
Before you work with a chainsaw, make sure the chain is properly tensioned. Pull gently on the top links of the chain saw, and you’ll see the shank move a few inches out of the guide bar groove.
Make sure there’s no slack in the chain saw’s lower links. Then pull the chain by hand, and if the tension is too great, loosen the chain. Check that the inertia brake is in the correct position, t.е. his handle did not touch the handle.
If you turn on the chainsaw with the inertia brake dislodged, the clutch will drop out.
After checking the tension of the chain, you can begin to fill the saw. Place the tool on a level surface. Pour fuel and oil to lubricate the chain and engine mechanism. A fuel mixture consisting of gasoline and adhesive oil is a good option.
Use a chain and motor lubricant made especially for chain saws. The components of this lubricant will guarantee the longevity of all engine and cutter parts.
After completing the above steps, start the chainsaw. The engine should be cold at this point. Put the saw on the ground when switched on and make sure it is well stable.
Turn off the brake and turn on the ignition. Hold the front handle with your left hand and put your right foot on the rear handle. Pull the starter motor to start the engine. Stop the overrun brake and hold the throttle a few times to warm up the engine. Next, check that the chain is getting a good oil supply. After making sure that everything is normal, you can start your work.
How to correctly cut trees with a chainsaw
Many people wonder how to correctly cut trees with a chainsaw?
Before you start working, there are a number of important rules for using this device. First, you must hold the chainsaw with both hands and grip its handle firmly with your fingers. Place your thumb under the front handle of the machine. Secondly, don’t stand straight at the chain saw. The standard sawing position is slightly to the side of the machine.
Always work with a straight back. Spread your legs wide apart for comfort and balance. Always brake your chainsaw when you’re riding. Start cutting with the edge of the guide bar. Failure to follow these rules can result in serious injury.
To work with a chainsaw, buy yourself special protective clothing, which will consist of a helmet and a mask, a bright jacket and pants. This shape will protect you from saw cuts.
How to saw a felled tree with a chainsaw
How to cut boards with a chainsaw with your own hands?
This question arises among beginners. Below we will describe in detail how to saw the wood properly.
Saw the tree at full throttle with the bar closest to the machine’s body. And for each material you have to use a different sawing method.
If you want to cut branches out of a tree, you need to stand to the left of the trunk and start at the bottom. Make all movements slowly. Cutting is done with the nose of the bar, namely with the upper and lower blades of the chain.
Saw thick, difficult branches in several steps. Start sawing with the chainsaw from the end to the base of the tree trunk. It should also be noted that without some support, the trunk may roll, and before you begin the work process, make sure that the tree lies secure and stable.
After trimming all the branches from the trunk, you can move on to the next stage. sawing the tree into several parts. Be very careful when operating a chain saw.к. The chain saw can make the tree fall on you due to the vigorous jerking of the saw.
If the saw blade gets stuck in a tree, do not pull it out. Turn off the saw motor and tilt the trunk slightly.
If you decide to chain saw large trees, you can’t do it alone. You need at least one helper who can help you in case of an emergency. Before you start sawing, make a visual inspection of the trunk of the tree for dry and rotten branches, t.к. they might fall on you.
You should also pay attention to neighboring trees so that they do not get in the way. Then stand to the right of the tree, and hold the tool at your side. This will substantially reduce the strain on your arms and spine. The whole process is divided into a felling notch and a main notch. Begin sawing at a forty-five degree angle to one-fourth of the depth of the tree trunk. With such actions, the wood will fall in the direction you want. If a tree falls, try to move the chain saw quickly enough.
Safety precautions when working with a chainsaw
When you buy such a tool, you need to know how to use the chainsaw correctly. Occupational health and safety requires that the worker only use equipment that is in good working order. Therefore, the operation of a chainsaw requires:
- mandatory inspection of it before each start-up;
- Regular checking of the condition and adjustment of key components;
- Adding oil and adjusting chain tension in a timely manner;
- stopping work if the chain brake and other essential parts and accessories are found to be faulty.
Do not make any unauthorized modifications to the tool or use spare parts that are not compatible with the model you are using. Some craftsmen talk about how to start a chainsaw without a starter. But they forget that its impeller is necessary for cooling the motor, which will begin to overheat with the threat of failure.
Always wear protective clothing, special gloves, safety shoes with metal inserts, hard hat, and eye protection when operating a chain saw. Always hold the tool with both hands, keeping the back straight, without leaning far forward and without raising the saw above your shoulders. It is not recommended to place body parts in the sawing plane. Safety precautions forbid moving with a chainsaw that has a rotating cutting chain.
When working with a chainsaw while felling trees and limbing requires special precautions to keep you from being injured by the falling tree trunks. Particularly dangerous if the saw encounters an obstacle and backfires. It is forbidden for a lumberjack:
- felling trees in a single cut;
- Cutting several limbs at the same time;
- Make cuts with the end of the bar;
- Stay in the fall zone of the tree.
Use of an unsuitable chain
It’s no secret that the chainsaw bar, as well as the chain, has several basic characteristics, one of them, this is the width of the groove for the installation of the chain. The width of the groove can have several basic dimensions:
Let’s imagine we take a chain with a 1.1mm fitting width and put it on a bar with a 1.3mm groove. Initially, if you have a good tension on it, we might not notice any difference, but as soon as you loosen the tension a little, the 0.2 mm gap will not let it move evenly on the bar, it will lean to one side and we’ll get another crooked sawing material.
When you buy a replacement chain for your chainsaw, ask for the exact chain dimensions, not the make or model of the chainsaw. The same chainsaw models can be fitted with different bars and therefore the chains will also be different.
Check the width of the chain fit, you can use a caliper.
To fix the problem, if the chainsaw bar is not yet severely damaged and there is no uneven wear on it, you will only need to replace the chain. If there is already wear and tear on it, you need to install a completely new set.
Severe saw blade wear
A rail lasts a lot longer than a chain. This does not mean that you can run it forever and not have to think about replacing it. It is common to change a guide bar after 2-3 worn chains. Before replacing the chainsaw guide bar, you need to assess its technical condition. If the chainsaw is equipped with a Chinese-made guide bar, it can wear out faster than the chain. That’s why if you find the chainsaw cutting wood crooked, you need to have the guide bar diagnosed.
In order to be sure of wear, a guide bar must be removed and inspected. Wear can usually be seen by shortening one of the rims. Sometimes it is very hard to find visually, so a caliper is needed. A difference of a few tenths of a mm indicates that the guide bar needs to be replaced. Another easy way to check guide rail wear is to use a straight edge. To do this, the tire is placed on a flat surface and an angle to the side of the tire. If the top and bottom walls of the guide are in contact with the angle, it means that the part is in good condition.
Why the saw is crooked
This is interesting! The only way to extend the life of a chainsaw guide is to flip it over from time to time. To do so, always make sure the tool is equipped with such a feature, as indicated by the corresponding markings on the headset.
The bar can wear out more quickly if the oil pump does not run properly. If the oil supply is intermittently interrupted, there is correspondingly high friction and thus parts wear out more quickly. If the lubrication system is working properly, not only the grease fitting but the tool itself will have a much longer life.
Heavy wear on the saw blade
A guide bar lasts much longer than a chain. But this does not mean you can operate it forever and not have to think about changing it. Usually the guide is replaced after 2-3 worn chains. Before replacing the chainsaw guide bar, you need to assess its technical condition. If you have a chain saw with a chinese guide bar, it can wear out faster than the chain. That’s why if you find the chainsaw crooked when cutting wood, you need to have the guide bar diagnosed.
To see if the guide bar is worn, you need to remove it and inspect it. Usually, wear is indicated by shortening one of the skirts. Sometimes it is very difficult to check visually, so a caliper is needed. A difference of a few tenths of a mm indicates that the tire needs to be replaced. There is also a simple method of checking guide rail wear with a straight edge. To do this, put the bar on a flat surface and hold a straight edge against it. If the top and bottom walls of the guide bar are in contact with the guide bar, that means the part is in good condition.
Accelerated tire wear can be caused by improperly functioning oil pump. If lubrication is intermittently applied, friction increases accordingly and thus parts wear out faster. If the lubrication system is working properly, it will dramatically extend the service life of not only the bar chain but also of the tool as a whole.
Using the wrong chain
A chainsaw guide bar has a few issues. One of them is the width of the chain groove. It can be completely different.
If you take the 1.3 mm pitch chain as an example and put it on a 1.5 mm pitch bar, you may not notice any difference when you tighten the chain. But when the tensioning slackens a little, the 0.2 mm will lead the chain to one side, and the cut will be crooked again.
If you put a 1.3 mm pitch on a bar, for example, you might not notice any difference.
Responding quickly to a problem will lead to an easier solution. As soon as the first signs are noticed, it’s worth troubleshooting immediately. Because a timely malfunction will lead to more trouble.
Why the chain saw cuts crooked
Why the chain saw cuts crooked
Working with a chainsaw, in some cases you can see how when sawing a tree trunk with a cross section of more than 30 cm, the guide bar begins to move sideways a little. This is especially noticeable when large cross-section trunks need to be cut using the double-cutting technique, i.e. е. First cut from above, later turn it upside down and finish sawing.
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Billets sliced with a chainsaw have an uneven surface, and this can cause discomfort when splitting them into logs. And the introduction of such a chainsaw during masonry logs, for example, for truncation bars and absolutely not allowed, t. к. the ends will be uneven.
Why the chainsaw swings to the side
Discomfort at work, decreased productivity, increased fuel consumption, crooked cutting, these are all bad consequences of this phenomenon, but what is the cause of all?
- Uneven sharpening of the teeth;
- Use of chain not matching the bar or vice versa;
- Severe wear on chainsaw chainrings.
According to the instructions for sharpening chains, all teeth should be sharpened at the same distance, regardless of which side they are on. This common guideline can help to avoid troubles related to chain saw shifting during cutting.
Unevenly ground teeth are the most common problem with crooked saws.
When sharpening chain with a ratchet grinder it is not always possible to control the tooth length using the technique of counting the number of strokes of the grinder.
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This is justified by the fact that the wear of the teeth is uneven, some are more damaged and it takes a larger number of movements of the rathole, in order to bring them back to normal, which means and the size of these teeth will decrease significantly, compared with the rest.
How to avoid improper sharpening
To prevent a bad cut because of uneven sharpening, you can use a special chain sharpening machine to straighten the chain at times or when badly damaged. Buy a machine tool and sharpen it yourself, or give it to a sharpening shop for sharpening.
Why the chain saw cuts crooked
This video carefully explains why a chain saw can cut awkwardly
Gas chain goes to the left or right, reason?
I have to wear a mask, because the sharpening dust is everywhere!
The disadvantage of this method is that it significantly minimizes the life of the chain, i.e. к. I have to grind down even the unsharpened prongs. Try to use your chainsaw with care, and look out for nails and metal objects that can come from sawing old boards and other junk.
Using the wrong chain
It’s no secret that the bar chain saw, as well as the chain, has several main features, one of them is the width of the slot for the installation of the chain. The slot width can have several main dimensions:
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Suppose we take a chain with a 1.1″ pitch and put it on a bar with a 1.3″ pitch. at the beginning, perfectly tensioned it, we can not see the difference, but when the tension is a little slack, the gap of 0.2 mm will not let it move on the bar moderately, it will bend to one side and we will get again crooked sawed material.
When buying a replacement chain for a chainsaw, make a clear statement about its dimensions, not about the brand and model of the chainsaw. On the same models of chainsaws, different bars can be installed and, accordingly, the chains will also be different.
To check the fit width of the chain, you can use a caliper.
For troubleshooting, if the chainsaw bar is not yet very damaged and there is no uneven wear on it, it will only be necessary to change the chain. If it’s already worn, you need to install a 100 percent new set.
If the chainsaw cuts awry in the arc, it could also be due to excessive wear on the saw headset. This can be checked by a visual inspection of their mating surfaces. To do this, remove the bar from the chainsaw and look at its plane of contact with the chain from the end, placing it at eye level so that one hundred percent visible fit groove for the chain.
With this inspection, you can visually assess the wear on the left and right sides of the bar in relation to the groove. Usually the edge wear should be moderate, and in this case if one side is more worn, you need to replace the defective side with the newest one to fix the problem.
To evenly wear a tire, some manufacturers suggest that you rotate it once in a while. But it’s worth keeping in mind that this recommendation isn’t correct for all models. к. many manufacturers indicate on the surface of the bar the direction of the chain, and therefore such a part can be installed only in one position.
the figure below shows a number of species, the upper has the direction of installation of the chain, as we are informed by the icon on the tip of the bar and the direction indicator.
Experienced chain saw service center craftsmen recommend the complete diagnosis of the lubrication system of the saw, if they find excessive wear, i.e. к. if the lubrication system is working properly and the chain is set to the correct guide bar, this phenomenon should not occur, but it could be that the oil system is faulty or out of adjustment.
If you see a bad cut while working with a chainsaw, the first thing you should pay attention to is the chain matching the guide bar. If all is normal, check the sharpening of the tines and the wear of the bar. If too much wear is found, check the functioning of the lubrication system, i.e. к. The inconsistency may lie in it. And the main thing to keep in mind that in a chainsaw everything is interconnected and the use of low-quality chain lubricants can be a prerequisite for early wear and loss of chain-saw performance.