Chainsaw Siberian cbr 2500 instruction manual. Useful tips when working with a chainsaw

Limited Liability Company "Pion"

Instruction No.___

INSTRUCTIONS
on labor protection
when working with a chainsaw

1. General safety requirements

1.1. The following workers are allowed to work with a chain saw:

at least 18 years of age;
having appropriate professional qualifications;
have undergone a preliminary (upon hiring) and periodic medical examination and have no contraindications;
who have undergone training and passed an exam at the enterprise commission and have a certificate. Permission to work independently is documented in writing in the workplace briefing log;
having an electrical safety group of at least I;
completed instructions: introductory, safety, on-the-job.

Permission to work independently is documented in writing in the workplace briefing log.

1.2. The main dangerous factors when working with a chainsaw are:

flying branches;
cutting chain;
increased vibration;
traffic fumes.

1.3. The worker must know:

device, principle of operation of a chain saw;
basic types and principles of malfunctions of this equipment and methods for eliminating them;
safe practices when working with a chainsaw;
what is the rebound effect and what consequences it can lead to;
fuel refueling procedure;
chain lubrication procedure;
procedure for checking saw mechanism wear;
procedure for sharpening and adjusting the height of the cutting stop;
adjusting chain tension.

1.4. When operating a chain saw, personnel must wear the following PPE:

protective trousers with saw protection;
protective helmet with ear protection;
safety glasses;
special protective gloves;
safety boots with chain protection with metal insert and non-slip sole;
When working with a chainsaw, have a portable first aid kit and a mobile phone.

1.5. For safety reasons, never use a saw with faulty safety elements.

1.6. The worker must comply with and be able to:

internal labor regulations;
fire safety rules;
the procedure for checking the chainsaw before starting work and its daily preventive maintenance;
provide assistance to injured victims.

1.7. If the requirements of the instructions are violated, the employee is liable in accordance with the current legislation of the Russian Federation.

2. Safety requirements before starting work

2.1. Wear the required protective clothing and prepare other personal protective equipment.

2.2. Fence off the installation work area, post warning signs, and provide the workplace with fire extinguishing equipment.

2.3. Check:

serviceability of the chain saw;
serviceability of the chain and chain brake handle;
serviceability of the throttle lever locking lever;
serviceability of the chain catcher when it breaks;
right hand protective elements;
vibration suppression systems;
serviceability of the switch, muffler.

2.4. Fill the saw with gasoline. When refueling, it is prohibited to use open fire. After filling is complete, tighten the cap securely.

2.5. Before starting the chainsaw engine, be sure to move it away from the refueling site and let the engine run at idle speed.

2.6. Check that there are no strangers near the workplace.

2.7. Before starting to work with a chainsaw, you must: install all safety devices; make sure that there are no people at a distance of at least 1.5 m from the place where the engine is started.

2.8. To avoid the risk of personal injury, workers with medical implants are advised to consult a physician and the implant manufacturer before operating a chainsaw.

2.9. It is prohibited to operate a chainsaw in a closed room that is not equipped with supply and exhaust ventilation.

2.10. The chainsaw should be held on the right side of the body. The cutting part of the tool should be below the worker’s waist.

2.11. Before using a chainsaw or chain saw, you must make sure:

the grip and brake of the chainsaw chain, the rear protection of the right hand, the throttle limiter, the vibration damping system, the stop contact are in good working order and are functioning correctly;
in normal chain tension;
that there is no damage and that the muffler is securely fastened, that the parts of the chainsaw are in good condition and that they are tightened;
there is no oil on the chainsaw handles; no leakage of gasoline.

2.12. When working with a chainsaw, the following conditions must be met:

there are no unauthorized persons, animals or other objects in the range of the chainsaw that could affect the safe performance of work; the tree trunk being sawn is not split or is not stressed at the point of splitting after the fall;
the saw blade is not clamped in the cut;
the saw chain will not catch the ground or any object during or after sawing; the influence of environmental conditions (roots, stones, branches, holes) on the possibility of free movement and on the stability of the working posture is excluded; Only those saw bar/chain combinations are used that are recommended by the technical documentation of the manufacturer.

3. Safety requirements during operation

3.1. When working with a chainsaw, the following requirements must be observed: the chainsaw must be held firmly by the rear handle with the right hand and the front handle with the left, tightly grasping the chainsaw handles with the entire palm. This girth is used regardless of whether the worker is right-handed or left-handed, it allows you to reduce the effect of recoil and keep the chainsaw under constant control. Do not allow the chainsaw to be pulled out of your hands; When clamping the chainsaw chain in a cut, you must stop the engine. To release the saw, it is recommended to use a lever to open the cut. It is not allowed to saw logs or workpieces stacked on top of each other.

3.2. Sawn parts must be stored in specially designated areas.

3.3. When placing the chainsaw on the ground, lock it with the chain brake.

3.4. When stopping the chainsaw for more than 5 minutes, turn off the chainsaw engine.

3.5. Before carrying the chainsaw, turn off the engine, lock the chain with the brake and put the protective cover on the saw blade.

3.6. The chainsaw should be carried with the saw blade and chain facing backwards.

3.7. Before refueling the chainsaw, the engine must be turned off and cooled for several minutes. When refueling, open the fuel tank cap slowly to gradually release excess pressure. After refueling the chainsaw, you must tightly close (tighten) the fuel tank cap. Before starting, you must take the chainsaw away from the refueling site.

3.8. It is allowed to refuel the chainsaw engine in a room equipped with supply and exhaust ventilation, or outdoors in a place where the possibility of sparking and ignition is excluded.

3.9. Before repairing or maintaining the chainsaw, you must stop the engine and disconnect the ignition wire.

3.10. It is not allowed to work with a chainsaw with faulty elements of safety equipment or with a chainsaw to the design of which changes have been unauthorized made that are not provided for in the technical documentation of the manufacturer.

3.11. Do not start the chainsaw if fuel has spilled onto the body during refueling. Splashes of fuel should be wiped off and the remaining fuel should evaporate. If fuel gets on clothes and shoes, they must be replaced. The fuel tank cap and hoses should be checked regularly for fuel leaks.

3.12. Mixing fuel with oil must be done in a clean container designed for storing fuel in the following sequence:

half the required amount of gasoline is poured;
the required amount of oil is added;
the resulting mixture is mixed (shaken);
the remaining gasoline is added;
The fuel mixture is thoroughly mixed (shaken) before pouring into the fuel tank.

3.13. Mix fuel with oil in a place where there is no possibility of sparking or ignition.

3.14. While working with a chainsaw, the employee is obliged to control the approach of unauthorized persons and animals to the place of work. When unauthorized persons or animals approach the place of work at a distance less than permitted by the requirements of the technical documentation of the manufacturer, it is necessary to immediately stop the chainsaw engine.

3.15. It is forbidden to turn around with the chainsaw running without first looking behind you and making sure that no one is in the work area.

3.16. To avoid mechanical injury, before removing material wound around the axis of the cutting part of the chainsaw, you must turn off the engine.

3.17. After turning off the chainsaw engine, do not touch the cutting part until it comes to a complete stop.

3.18. If symptoms of overload from prolonged exposure to vibration occur, stop work and, if necessary, seek medical attention.

3.19. The chainsaw and fuel should be stored and transported in such a way that there is no risk of fuel leaks or vapors coming into contact with sparks or open flames.

3.20. Before cleaning, repairing or checking the chainsaw, you must make sure that the cutting part is stationary after turning off the engine, and then remove the spark plug cable.

3.21. Before long-term storage of the chainsaw, you should empty the fuel tank and perform full maintenance in accordance with the technical documentation of the manufacturer.

4. Safety requirements in emergency situations

4.1. If the chain is caught in the cut:

stop the engine;
Do not try to pull the saw out of the clamp. This can damage the chain if the saw suddenly becomes free.

4.2. If you are injured while working with a chainsaw, you should:

go to a medical center or call an ambulance;
notify the technician (the chainsaw can be repaired by a specialist with the appropriate skills and a safety group of at least II).

5. Safety requirements after completion of work

5.1. After finishing the chainsaw operation, you must:

clean the chainsaw;
clean the air filter;
check the operation of the starter and its cord for wear or damage;
check the operation of the switch;
clean the spark plug;
clean the cooling fins of the cylinder;
clean or replace the muffler mesh;
turn the saw blade over;
Check the tightness of all nuts and bolts.

5.2. Report any problems noticed in the operation of the burner and the measures taken to the work manager.

5.3. Take off your overalls and wash your hands with soap.

Almost every person who lives in a private house or has a summer cottage uses a chainsaw powered by a gasoline internal combustion engine from time to time. Beginners in this regard often have a question about how to start a chainsaw correctly. It is worth noting here that professional, semi-professional and household tools are started in approximately the same way. How exactly to do this will be described in the material.

Tool launch features

To run the tool, several processes need to happen simultaneously:

the fuel mixture must be supplied under the engine piston;
it should shrink as much as possible;
At this point, a spark must be supplied to ignite and start.

Each of these processes occurs the moment you pull the starter handle. When using a new chainsaw, you need to remember to break it in.

However, in reality everything is not so simple. The fuel for starting the tool in hot and cold engine modes must differ in the quality of the air mixture. So, a hot engine can operate with a normal air level, which will ensure its stable operation and will maintain normal idle speed. However, a similar amount of air will be enough to drive a cold engine. Before starting the chainsaw, the starter will need to be pulled about 10 times. and perhaps more.

To reduce the amount of air and increase the fuel supply in the chainsaw carburetor, a special damper is installed, which is responsible for adjusting the amount of air when starting the engine. Starting the engine with a saw will be faster, so the duration of operation of the starter and the saw as a whole will be increased.

It is very dangerous to start the saw at a refueling site.

Start according to instructions

Different models of chainsaws have their own starting features and their own mechanisms. We will look at the device startup algorithm using the example of the popular Stihl M. S. 180 chainsaw model.

Before starting the startup process, it should be noted that the instructions for some chainsaw models state that Before starting the tool, the emergency stop brake must be engaged. for added security. But with a fixed brake, starting will be more difficult..

Accordingly, it will be better to unfix it.

If you do everything correctly, then nothing will be difficult. If you are worried that without fixing the chainsaw at the moment of starting it will cause harm, then it is better not to take risks at all and not get to work. So, the algorithm for launching the Calm tool is as follows:

Before starting to wind the tool, the damper adjustment lever should be moved to the lower position. Remember that it moves all the way down on the saw only when the gas button is pressed. Press the gas button and move the lever down. This will close the carburetor valve and lock the gas in the pressed position;
Next, vigorously pull the starter handle until you hear the characteristic sound of an attempt to start the tool. It should stall immediately. Then the damper position adjustment lever is moved one step up;
In this position, pull the starter handle again until the saw starts. And if it starts, then due to the fact that the gas handle is fixed pressed, the work will take place at high speeds;
Then press and release the gas button once so that the throttle adjustment lever automatically assumes the operating position and the speed decreases;
If it is necessary to put a heated chainsaw into operation, you need to put the lever in the working position and then start it;
To stop the machine's engine, the throttle adjustment lever must be moved to the up position.

Tool Hold

To properly start the chainsaw into operation, you should hold it in the correct way at the moment of starting. The position of the saw is very important here. Holding at the moment of launch can be accomplished in two ways.

In the first case, the saw is placed on a flat surface, the left hand must be held straight and the tool should be held by the upper handle, the right foot should be placed on the protection for the second hand, and the tool itself should be pressed to the ground. In this position, it will be convenient to launch the tool, since your right hand is free, and the tool is fixed quite securely.

Regardless of the position in which you plan to start the saw, be sure to turn on the saw brake.

In the second option, you need to take a standing position and hold the upper handle of the instrument with your left hand, and hold the back handle between your legs. Thanks to this position, you can easily wind up a low-power tool, and it will be securely locked, thereby protecting yourself from an accident.

Starting without a starter

Often, many home craftsmen are interested in whether it is possible to power a chainsaw without the help of a starter. The answer is very simple: this cannot be done in principle.

None of the manufacturers have provided other alternative starting methods. Therefore, even if you remove the starter and try to start the car in some other way, it still will not work, since disturbances will occur in the cooling system. This system contains a volute to transmit the flow of cold air from the flywheel impeller towards the cylinder. If it is not there, the engine will overheat and eventually seize.

Reasons why the chainsaw does not start

The tool must be launched strictly according to the instructions. But if you have completed all of the above steps, and the saw still does not start, this means that there is something wrong with it. There are several reasons why it may not start:

no spark;
fuel is not supplied;
air filter clogged.

So, what should you do to identify the real reason why the tool is not working?

Firstly, it must be said If the tool does not start, the screws on the carburetor must not be turned under any circumstances.. And if you are not a professional in this field, then even do not try to adjust anything with your own hands or try to start the instrument.

The steps listed below, necessary for the tool to start working, must be performed in the strictly specified sequence. You need to start performing the next step only when the previous one did not work. The actions are:

The above material discussed how to properly start a chainsaw using the example of one of the Calm models, as well as how to behave if the tool cannot start. If you are new to this business or are faced with a problem, then this information may be useful to you in the future.

Chainsaws help to quickly and efficiently clear a space of trees, build log houses, or prepare wood raw materials. But in order to work with this tool correctly and safely, it is useful to know what is inside it.

How does a chainsaw work?

The design of a chainsaw is not too complicated. The main elements of its design:

ignition system;
carburetor;
fuel system;
air purification system.

Let's talk about each of them in more detail.

Ignition system

The ignition system of modern chainsaws contains elements that, depending on the speed of the saw, regulate the impulse. Most manufacturers today equip their equipment with electronic ignition instead of contact ignition.

The electronic ignition system consists of the following elements:

magneto;
candle;
the electronic unit;
wiring;
motor start button.

Magneto is a type of alternating current generator. It supplies electrical energy to the spark plug. Any magneto consists of a coil with a core and high-voltage windings, a flywheel and a permanent magnet. Magneto can be contact or non-contact.

A contact magneto has two winding terminals. The first one goes to the spark plug, the second one goes to the ground. A capacitor can be connected to such a circuit to prevent the contacts from overheating and oxidizing.

In a contactless magneto, the voltage regulator is a coil. The thyristor, diode and capacitor regulate the amount of current. The electrical network operates in time with the translational movement of the cylinders and the rotation of the crankshaft. However, the connection diagram of all parts of the contactless magneto with each other depends on the model of the saw.

The ignition works like this:

a magnet attached to the flywheel rotates with it and induces an electromotive force in the system;
a current arises in the circuit, which is converted by an electronic unit into electrical signals;
signals are transmitted to the candle;
A spark is formed between the contacts of the spark plug, which ignites the fuel-air mixture.

In any ignition, a spark is formed when the engine piston does not reach its “dead center” by approximately 3-4 mm.

The spark plug consists of a body, an insulator and electrodes: central and side. By its condition, you can visually identify ignition faults.

See » The main rules for running in the saw set and chainsaw engine

After the fuel mixture ignites, the engine begins to operate. From time to time the entire ignition system needs to be adjusted.

Carburetor

On most chainsaw models, carburetors are designed the same.

They have a damper in the body. With its help, both screws (main and idle), diffuser, pulse channel and inlet fitting are adjusted. The damper also regulates the supply of atmospheric air.

Understanding how the carburetor works helps you adjust it correctly. It works like this:

the engine starts, the air damper opens at the bottom of the housing;
a vacuum occurs inside the float chamber and in the air channel because the piston moves;
air is sucked in through the diffuser;
the fuel mixture enters the float chamber from the gasoline tank through a fitting;
in the diffuser, gasoline is mixed with air;
Through the intake channels, the fuel-air mixture enters the combustion chamber.

Using the damper you can regulate the intensity of air entering the fuel, using screws you can adjust the engine speed, and using the jet you can adjust the speed of gasoline entering the diffuser.

Fuel system

Consists of a fuel filter, carburetor and manual fuel pump. However, not all chainsaws have a pump: in some models, gasoline from the tank enters the carburetor unit simply through a hose. The end of the hose with the fuel filter is immersed in gasoline, and gasoline stops flowing into the carburetor assembly when the tank is filled with air. To avoid this, a breather is attached to the tank cover: when it becomes dirty, the engine stalls.

The manual fuel pump allows you to fill the carburetor section with fuel in advance, so the engine starts faster.

Chainsaws are equipped with a preliminary and fine cleaning system so that the gas used to create the fuel-air mixture is of good quality.

The air is first filtered by a mesh filter, then fine filters.

Due to dirty filters, less air enters the carburetor assembly. As a result, the engine power decreases. To prevent this, filters must be constantly cleaned: blown or washed.

See » TOP 2 models of Japanese chainsaws of the Hitachi brand (Hitachi)

Starter

The starter starts the chainsaw motor. The starter mechanism consists of a handle, cable, drum and return spring.

If you sharply pull the handle with the torso, the drum will engage with the shaft, and the shaft will begin to rotate. The spring will help return the handle to its original position. In order for the rotation of the shaft to be followed by starting the motor, you will need to pull the handle more than once.

Chain

Chain pitch is the intermediate distance between three rivets located side by side.

The larger the chain pitch, the greater the engine power, its performance, and the effort required to increase the rotation of the drive sprocket.

But chains with a small pitch (more teeth and less distance between them) vibrate less, their movements are smoother when cutting, and the cut is cleaner.

Tire

Chainsaw bars vary in length. The length of the bar is the length of the working part, that is, the distance from the front of the saw to the rounded tip of the nose of the bar. As a rule, the length of the tire is indicated in the instructions.

But the reliability of the saw bar is determined not only by its own characteristics, but also by other details. For example, an asterisk. If the sprocket with replaceable ring is made of durable materials, the tire will last a long time. Thanks to the replaceable crown, the level of runout is reduced many times over.

In order for the tire to wear as evenly as possible, it needs to be turned over periodically, then its service life will increase.

Brake

If the chain accidentally touches the wood while rotating, a kickback occurs. In this case, for safety reasons, the brake must be applied.

The saw's braking system consists of a brake stop and a brake band. The system can be turned on in two ways: contact (the brake stop presses the worker’s hand) and inertial (when there is a sharp impact on the tire, inertial forces arise that act on the brake).

Chain lubrication system

In modern chainsaws, the chain and bar are automatically lubricated. At idle, there is no oil supply, since the oil pumps begin to work only after the sprocket rotates and the gear train starts moving. The higher the sprocket revolutions, the more oil flows from the pump to the chain. The pump is installed on the chain side and receives oil from the oil tank through an oil line.

Choosing a suitable chainsaw for yourself is not the most difficult thing; extending its service life is much more difficult. The first thing a person who buys has a task is to break it in. This procedure is mandatory and is key in the life of the instrument. You can't just fire up a new chainsaw and start working. It needs to be fully checked and prepared before you begin your tasks. Should be used, as working with a chainsaw can be dangerous. When cutting wood, chips fly, so you should protect your eyes. It is also better to wear gloves when working with tools to avoid injuring your hands.

Why do you need to break in a new chainsaw?

This is a complex process that requires a responsible approach. A chainsaw is not the exception, but rather the rule. All tools with a two-stroke engine require break-in. Without proper break-in, the life of the tool will be much shorter, and it will perform worse. Everyone who bought this tool should know how to break in a chainsaw.

Why do this? During these manipulations, grinding in of engine parts and saw accessories is carried out.

You need to understand that you need to study the instructions for the tool in detail. You must remember it and use all the recommendations. There is also a lot of information about what not to do or what must be done. If you are a “layman” and have never encountered running in a chainsaw, the instructions for your tool should become your reference book.

How to break in a chainsaw: step-by-step instructions

Before running in, the chainsaw is started for the first time. Be sure to prepare and install the headset correctly. The fuel mixture should already be waiting “in the wings”; the quality of the running-in largely depends on it.

Here in front of you lies a new, sparkling instrument. Looking at him, the question appears: “What needs to be done now?” After reading the instructions, you find out that a run-in is needed and the first launch must be special. How to start a new chainsaw is not yet clear, but now everything will become clearer.

We definitely do the first launch with a headset. You should not start the engine without tires and tires: the tool must work with them, so it will receive the proper load. You should not make high speeds, this will negatively affect the further operation of the saw.

After installing the headset, you need to do the following things:

Make the fuel mixture;
Check the lubricant and make sure that the bar is compatible with oil and that the chain is constantly lubricated.

Choosing chainsaw oil

Particular attention should be paid to the choice of oil; the operation of the entire tool depends on it. The higher its quality, the longer and more efficiently the chainsaw will serve. You need to buy a special one, which is made specifically for such engines. When using the wrong lubricant, common problems will include:

Engine breakdowns;
Ignition problems;
The chainsaw will stall and sometimes simply refuse to start;
Overheating of the saw.

Different parts require different lubricants - one oil will not suit all tasks. The choice of this material is one of the most important things when interacting with a chainsaw. The life expectancy of the instrument depends on the decision made.

Special lubricants have been created for Foresta saws, and motor oil will do an excellent job of protecting the “heart” of the tool. Chain lubricant is not suitable for the motor, otherwise the longevity of the tool may be reduced. Even if the oil is of high quality, if it is used for other purposes, nothing good will come of it.

For Foresta saws, proprietary lubricants are specially made, which make working with them easier and additionally protect against overheating.

Fuel mixture for first start

More than half of the chain saws on the market use two-stroke engines. For such engines there is no special oil for active parts. You have to make a special lubricant that can replace it. For manufacturing you will need good quality gasoline and motor oil recommended by the manufacturer.

Selection of ingredients for the mixture

The basis for our mixture will be gasoline. You need to take a petroleum product with an octane number of more than 90. You should not save money and take questionable fuel, then you will pay more for repairs. Additives that increase the octane number are also a dubious choice.

Owners are faced with a choice between leaded and unleaded gasoline. For an engine without a catalyst, you need to take the first option, respectively, if a catalyst is installed, take the second type.

Choosing oil is not difficult, just take a branded lubricant from the chainsaw manufacturer.

If there is no branded oil, use JASOFB or ISOEGB class oils.

Production of fuel mixture

To break in the tool, the fuel mixture is made in accordance with the proportion of 1:25, where 40 ml of oil is needed for 1 liter of gasoline. Be sure to follow the proportions; failure to comply can be fatal to the device.

Take a washed vessel and do everything according to the instructions:

Pour half of the required gasoline into the container;
Pour out all the oil;
Stir the resulting substance;
Add the remaining gasoline and mix.

The video shows how to make it, just don’t forget about the proportions. They differ depending on the chainsaw.

Checking for lubrication

Now the important step, we need to check the lubrication. Please note that this is always done, it does not matter how many times you work with the saw. This will protect the instrument from unexpected damage and overheating. You need to check the following points:

How much oil is left in the tank;
Condition of the saw blade channels;
There should be grease on the drive sprocket needle bearing;
Is there lubrication on the driven sprocket?

If you see that the channels are clogged, be sure to clean them and lubricate everything. Tests have shown that Foresta chainsaws consume 40% less fuel and lubricant. This makes working with them much easier.

Starting a chainsaw for the first time: step by step

After completing all the steps described above, we proceed to launch. The motor of our saw is not heated, so it starts cold. We place the tool in a stable position, and then follow the instructions:

We put the chain brake in the non-working position;
Turn on the ignition;
Set the air supply damper to the closed position;
If the saw has a decompression valve, close it;
We set the throttle valve to the starting position;
With your left hand, take the front handle of the chainsaw and pull it down;
We hold the protective shield of the right handle with our foot;
With your right hand, pull the starter handle until the ratchet pawls engage with the starter drum.
When you start to feel a little resistance, make a sharp jerk towards yourself.
You will see a flash in the combustion chamber, after which you need to return the air damper to its original place;
We start the chainsaw again;
The engine is running, at this moment you need to release the throttle.

Stages of running in a new chainsaw

You've successfully started the saw, now it's time to break in the new tool. It is assumed that you have already studied the instructions and know what not to do. The running itself includes 2 main stages, each stage affects different parts and prepares them for work. Let's look at these stages in more detail.

Tools used:
chainsaw Makta DCS 7900 (professional);
chainsaw Makta DCS 3435 (amateur).

Those who do not yet have experience using a chainsaw should remember the basic principles of working with this tool:

– the saw must be held with both hands, and the handles should be clasped with all fingers. In this case, the thumb of the left hand should be under the front handle;

– when working, you cannot stand directly behind the saw; you need to stand slightly to the side of the tool;

– you can cut with both the upper and lower edges of the tool. When sawing with the bottom edge, the chain guides the saw away from the user. When sawing is done with the top edge of the tool, the chain moves the saw towards the user;

– when moving to another place, it is necessary to turn off the engine of the tool or activate the brake of the saw. You cannot move with a saw whose chain rotates;

– you need to start cutting with the section of the tire that is located closer to the body of the tool;

– if you plan to frequently work with a chainsaw, you need to purchase protective clothing: strong boots (preferably special ones protected with steel plates), strong gloves, special trousers with cut protection, a bright protective jacket that allows air to pass through, and a helmet with a mask.

1. Preparing for work

Before starting work, check the chain tension - it must be carefully adjusted so that the chain does not sag on the bar during operation. A poorly tensioned chain wears out the bar and sprocket faster, damages the shock absorbers faster and increases the load on the tool body.

– before you start working with a chainsaw, you must read the user manual;

– if the saw chain is new, it is recommended to immerse it in oil for several hours before starting work. If the chain is old, it is necessary to sharpen it: the cutting tools of a poorly sharpened saw wear out quickly.

The saw is placed on a stable surface and fueled. For refilling, you should use only “branded” oils designed specifically for chainsaws. The percentage of oil in this mixture should be 1/40-1/50. To operate imported saws, it is better to use 92-grade gasoline (or a higher grade), while 76-grade gasoline is also suitable for Russian saws.

– to avoid the risk of fire, before starting the engine, the saw is removed from the place where it was filled with fuel and placed again on a solid, stable base.

3. First launch of the tool

After checking that the chain does not touch hard surfaces, turn on the chain brake. In this case, the brake handle is moved away from you so that the chain does not start to rotate ahead of time. Since the engine is cold, the choke control lever is pulled out completely. The toe of the foot is threaded into the rear handle (while holding the front handle with your hand). Pull the handle several times, pulling out the starter cord, until the engine “sneezes.” After which the air damper is moved to the working position and the saw is started. Briefly press the throttle and set the saw to idle. The brake handle is moved back to its previous position. The saw is ready for use.

– before work it is necessary to check the brake of the tool. To do this, place the saw on a flat surface and press the throttle. The brake is activated by pressing the handle without releasing the handle of the tool. If the chain stops, the brake is working properly;

– You should also check the lubrication mechanism before work. You need to find some light surface (for example, a freshly cut stump). Hold the tool over the stump, start the chain and increase its speed by pressing the throttle. If a streak of oil appears on the stump, then the lubrication mechanism is in order.

4. Pruning branches

Trimming branches from the trunk of a fallen tree begins from the bottom of the trunk, standing to the left of it. Work is carried out at a slow, calm pace, trying not to use the nose of the saw. Saw with both the top and bottom of the tire, trying to lean the saw against the thigh or trunk if possible. Branches from the top of the trunk are cut down by placing the tool on its side (the saw should rest on the trunk with all its weight). After the branches on top and on the side of the lying trunk are cut off, the trunk is turned over and the branches that were below are cut off.

– it should be remembered that sometimes the entire trunk can rest on only one branch: if it is cut, the trunk may move or roll;

– if the branch is thick, you need to cut it down in parts - from the end to the trunk. If the branch is particularly thick, it may require sawing on both sides.

5. Bucking (sawing the trunk into pieces)

Bucking begins when all the branches have been cut from the trunk. The trunk of a lying tree is cut into pieces in the direction from the trunk to the top (butt).

– during the bucking process, it is prohibited to stand below the trunk if it is located on an inclined plane;

– if the saw is stuck in the trunk, you need to stop the engine and tilt the trunk until the saw comes out of the wood. There is no need to immediately remove the saw from the tree.

6. Tree felling

Before cutting down a tree, they determine in which direction it will be “more convenient” for it to fall. To do this, take into account the natural slope of the trunk, the direction of the wind and the number of branches on each of its sides. The tree must be felled in the direction in which it is “more convenient” for it to fall. Immediately before felling, you need to cut off any low branches that could interfere with the work. There are several technologies for felling trees, which are selected depending on the thickness of the trunk and other factors. Only a professional lumberjack can choose the best method.

– if there are people nearby, they should be at a distance of at least 2 tree trunk lengths;

– before starting work, you should make sure that there is nothing around that could be damaged by a fallen tree;

– felling trees is not an easy task: if you do not have experience in such work, it is better to entrust this task to professionals or ask them to be present during the work!

Instrument care

Each time after working with a chainsaw, you must do the following:

1. Check chain tension and lubrication.

If the chain is loose, it needs to be tightened; if the oil runs out, add it to the tank.

When finishing work, you should refuel the machine after a short rest to allow the saw to cool down.

3. Checking the air filter.

From time to time, the filter becomes clogged with chips; after finishing work, it is advisable to remove it, wash it and blow it out. It is also necessary to periodically clean the surfaces around the engine cooling plates from contamination.