Adjusting the carburetor of the Carver 45 15 chainsaw

Chainsaw Carver PSG-45-15 – model description

This saw is equipped with a durable 2-stroke gasoline engine with a cylinder capacity of 45 cm3. To cool the motor, the model is equipped with a forced air supply system. A proprietary starting mechanism with the Quick Start function is responsible for starting the engine.

The design of this Carver chainsaw has easy access to the air filter and other consumable parts of the tool - this reduces the time spent on servicing the model.

For convenient use of the saw, its device is equipped with a durable anti-vibration system. It dampens engine vibrations and reduces operator hand fatigue. An effective chain inertial brake is responsible for the safety of the feller.

Model specifications include:

• power – 2.4 l. With.;
• the recommended length of the tire used is 15–18 “;
• number of cutting chain links – 64;
• ready-to-use weight – 6 kg.

The Carver Promo 45 15 chainsaw is used for cutting branches, felling small trees and clearing bushes. During operation, the tool consumes a minimum of fuel and does not make much noise.

How to Assemble a Carver Chainsaw

Carver chainsaws: review, description, technical properties and reviews

There is no doubt that the saw is one of the most suitable tools for the owner of a personal home and summer resident. With its help, you can easily cope with the preparation of firewood and pruning trees. And when building a veranda or gazebo, you cannot do without such equipment.

Not so long ago, it was customary to use ordinary hand saws and hacksaws to solve such problems. But the development of technology does not stand still, and now you can buy a gasoline saw in every construction tool store. But every consumer is faced with the question of which model to choose, and which option is better suited for repetitive or constant work. For this particular purpose, before making a purchase, you need to evaluate the intensity of use of the chainsaw, as well as how easy it is to maintain it. Carver chainsaws are one of the favorites on the market right now. You can also see them as equipment that you could purchase for yourself. But you still need to ask what models this manufacturer offers and what features they have.

Content

Review of features of the PROMO PSG-52-18 chainsaw

This equipment option will cost you 4,300 rubles; it is a household tool that can easily handle sawing wood materials. Easy start is ensured by a special system, which the manufacturer called Quick Start. How to disassemble a chainsaw quickly and accurately? It’s not just about assembling the circular yourself. But this function is not the only one that was introduced into the design. You can count on the device to provide comfortable operation, because it has an anti-vibration system.

READ Chainsaw Greenline Gl5518 Video

Model description

If you are most attracted to Carver chainsaws, then it is worth considering the model that was described above. It has many advantages, including:

• vibration-absorbing handle coating;
• presence of an adjustable chain lubrication system;
• easy access to the air filter;
• the highest resistance of the case to low temperatures.

The implementation of the equipment is simplified due to the presence of a chain lubrication system, which can be adjusted by the operator. When kickback occurs, the chain brake will operate, this guarantees safe operation. You can count on the highest cutting accuracy, which is ensured by the toothed stop.

Specifications

Carver chainsaws are now available for sale in a wide range, one of the models is PROMO PSG-52-18, the technical properties of which will be described below. For example, the length of the tire is 45 cm, while the engine volume is 52 cm3. The equipment belongs to the household class and has an 18-inch tire. Power is 2.6 liters. s., which is equal to 1.9 kW. The unit weighs 5.2 kg, which is not very much for such equipment. You may also be interested in the width of the groove, which is 1.5 mm.

Chainsaw CARVER PROMO PSG-45-15 REVIEW Assembly. part 2

Assembly of the CARVER
PROMO PSG-45-15 after purchase. This is a series of videos about purchasing and testing in real

Chainsaw assembly instructions

Chainsaw assembly video

husqvarna. Installing the bar, installing the fang and tensioning the chain. View catalog

Feedback on operational features

Carver chainsaws are considered by many consumers to be quite strong and reliable equipment. As an additional advantage, buyers also highlight the affordable price. How to assemble a chainsaw video! But you need to pay attention to the shortcomings. You can find out about them by reading the views of some consumers. Home craftsmen from time to time note that the model described above does not supply oil to the chain, the tire is of poor quality, and during operation its hole immediately becomes clogged with sawdust. For some, this device works properly for several seasons, after which they still have to change the bar and chain, but it’s a stretch to call this feature a defect.

READ Adjusting the Carburetor of the Ural 2 Chainsaw

Review of saw brand RSG-45-18K

The Carver RSG 18K chainsaw costs RUB 6,400. and is equipment for household use. It has a motor protection system, which is made in accordance with international standards. The device is characterized by economical fuel consumption, and the crankcase is made of metal, which guarantees the highest heat dissipation and increases the quality of wear resistance of the crankshaft socket bearings. The manufacturer claims: the equipment is equipped with a Rezer chain and bar, which ensures highest performance.

Model description

The above model of chainsaw ensures safe operation, fast start-up and a long service life. Servicing the unit is quite easy. If there is a need to instantly stop the chain, you should use a front stop, which will send a signal to the brake system. Don’t be afraid to leave this chainsaw for a long time; after idle time, you can simply start the engine, because for this purpose the equipment has a primer for pumping fuel.

But a long service life was achieved thanks to the iron crankcase; it allows the tool to work even in the most difficult conditions, increasing the service life of the saw. This Carver chainsaw, reviews of which you can find below, is easy to maintain. After all, the air filter is protected in the form of a special casing; it can simply be opened using a rotary wheel.

READ Carburetor Adjustment for Shtil 260 Chainsaw

Reviews about the model

From consumer reviews, you can find out about the good balance of the saw, the presence of an automatic adjustable chain lubrication system, and an iron gear stop. Balance indicates that the user will not get tired while working, but the body material is resistant to low and high temperatures.

For precise sawing, the equipment has an iron gear stop, and the surfaces of the cylinder are chrome-plated, which is very popular with customers. According to users, when operating a chainsaw, it consumes fuel in a volume that is 20% less.

Description and technical characteristics of the PROMO PSG-45-15 chainsaw

chainsaw costs RUB 4,200. and is equipment designed for sawing wood and trimming branches. The air filter is easy for the operator to access and precision cutting is ensured by the serrated stop. The power of the unit is 2.4 liters. s., which is equal to 1.8 kW. The equipment weighs 5.8 kg, and the groove width is equivalent to 1.5 mm. How to disassemble and assemble a Shtil 180 chainsaw. The number of links for this equipment is limited to 64.

You might also be intrigued by the chain pitch, which is 0.325 inches. This chainsaw should not be used in areas containing explosive substances. You need to make sure that there is no excess dust in the air.

Source

Chainsaw Carver Promo PSG-52-18 – features and benefits

This household chainsaw is successfully used for gardening, as well as for performing simple construction tasks. It is equipped with a durable 2-stroke gasoline engine with a cylinder capacity of 52 cm3. The walls of the latter are covered with a protective layer of chrome, which prevents the formation of rust and extends the life of the engine.

To quickly and smoothly start the engine, the model is equipped with a proprietary starter with the Quick Start system. It reduces the resistance of the cable and reduces the load on the parts of the trigger mechanism.

Specifications for this Carver model include:

• power – 2.6 l. With.;
• the recommended length of the tire used is 15–18 “;
• number of cutting chain links – 72;
• ready-to-use weight: 5.6 kg.

The small dimensions and light weight of the chainsaw make it possible to use it at high heights without additional insurance for the operator.

Technical characteristics of the CarverPromo PSG 52-18 chainsaw

Chainsaw Carver 252 – model equipment

This Carver model is equipped with a 2-stroke gasoline engine with a volume of 52 cm3. To start the motor, the tool has an improved trigger mechanism with clamping springs. They make it easier to start the internal combustion engine and extend the life of the starter.

This Carver saw is equipped with an effective vibration damping system and a high-quality muffler. The elements reduce noise and vibration levels, making the use of the chainsaw more convenient.

Tool features include:

• power – 2.7 l. With.;
• the recommended length of the tire used is 15–18 “;
• number of cutting chain links – 72;
• ready-to-use weight – 6.4 kg.

This Carver model is designed for regular garden maintenance, simple tasks in construction and logging.

Chainsaw Carver RSG 225 – features and benefits

The Carver saw in this configuration stands out for its modest dimensions and light weight. This makes it possible to use the tool at high altitudes with unreliable coverage.

The saw is equipped with a durable 2-stroke gasoline engine with a cylinder capacity of 25 cm3. The walls of the latter are covered with a protective chrome alloy, which protects the motor from corrosion. To start the internal combustion engine, the saw device is equipped with a reliable manual starter, and for cooling the engine there is an effective forced air supply system.

Model specifications include:

• power – 1 l. With.;
• the recommended length of the tire used is 12 “;
• number of cutting chain links – 45;
• ready-to-use weight – 4.5 kg.

All internal spare parts of this Carver model are placed under a reliable protective case. It is made of special materials that can withstand low temperatures and various mechanical damage.

How to adjust the carburetor on a Carver chainsaw

Adjusting the idle speed with the T screw is always separate. If the Carver chainsaw engine stalls at idle, this may be due to:

• poor spark plug performance;
• loss of compression due to critical wear of the piston system;
• bad fuel;
• poor carburetor performance not related to adjustment;
• filters clogged with paraffin in the tank and carburetor.

For the same reasons, the engine of a Carver chainsaw may work poorly not only at idle, but in general - it does not pull, does not develop speed, stalls when the throttle is pressed, etc. Therefore, we must first try to deal with these reasons. And lastly, if the problems are not solved, you can try to increase the idle speed by turning screw T clockwise.

1. If the engine does not start at all at idle precisely because of a violation of the adjustment, screw T is tightened 1/2 or 3/4 of a turn and the engine is started.
2. Then they adjust by ear with the engine running, observing all safety measures. (With a strong increase in speed, the chainsaw chain may begin to rotate, and this is dangerous).
3. If the chain spins at idle, screw T is unscrewed back to a position in which the engine idles confidently and does not stall, and the chain does not spin.

Then check the operation of the chainsaw engine in all modes. If it idles steadily, but stalls when you press the gas, this is a sure sign of a lack of fuel supply to the combustion chamber. If all systems are working properly, filters and jets are clean, the cause is most likely a violation of the adjustment of screw L.

1. It is also better to adjust it with the Carver chainsaw engine running and warm, screwing it in 1/4 turn and trying to rev it up.
2. If the fuel supply is too plentiful, the engine will operate as if idling when the throttle is in the “full throttle” position. This means that screw L is tightened too tightly and you need to unscrew it back in 1/4 turn increments, trying to give gas.

If, after adjusting screw L, the Carver engine does not produce the power required for operation, you can carefully try to increase the maximum speed by adjusting screw H. It can also be adjusted with the engine running, but in the “full throttle” position.

Extremely carefully, screw in the screw 1/5, 1/6 of a turn and listen to the operation of the engine

They also adjust it with the engine running, but in the “full throttle” position.

Extremely carefully, screw in the screw 1/5, 1/6 of a turn and listen to the operation of the engine

Increasing the speed ceiling can slightly extend the life of an old chainsaw with a worn piston. Weak compression is compensated by a higher mixture supply at maximum speed.

Professional adjustment of screw H is carried out using a tachometer to determine the speed ceiling and an oscilloscope to monitor the frequency of flashes on the spark plug. Compression is pre-checked.

After adjusting screw H, operation in other modes may change. Therefore, it will be necessary to test the operation in all modes and, if necessary, slightly adjust the adjustment with screws L and T.

This is not always worth doing for the following reasons:

1. If twisted too hard, the sharp end of the screw can destroy the loose powder bronze jet on cheap chainsaws, and this will cause a breakdown.
2. 1.45-1.5 turns from “to the end” may not correspond to the old position of the screws, in which the chainsaw still worked to the last, and to the actual factory settings.

Therefore, it is necessary to adjust based on the “as it was” position by no more than 1/4 turn at a time

It is important to remember how much and in what direction the position of the screw was changed

If you still need to tighten the screw “to the end”, count the number of turns from the “as it was” position, this will make it possible to return the settings to their previous position. You need to tighten it “all the way” without effort.

The general principles of self-adjustment of a chainsaw carburetor are presented in the following video:

Chainsaw Carver RSG-25-12K – model features

Among the advantages of this tool from Carver are durability, reliability and ease of use. Despite its modest dimensions, the model quickly copes with cutting down trees whose trunk thickness does not exceed 30 cm. The chainsaw is also used in utility companies and in the construction industry.

The tool is equipped with a 2-stroke gasoline engine with a cylinder capacity of 25 cm3 and a power of 700 Watts. The internal combustion engine is equipped with a trouble-free manual starter and a forced air supply system.

Features of this Carver model include:

• power – 0.95 l. With.;
• the recommended length of the tire used is 12 “;
• number of cutting chain links – 45;
• ready-to-use weight – 4.3 kg.

The tool includes a high-quality damper system that reduces motor vibrations. This makes it easier to operate the tool at heights and in confined spaces.

Chainsaw maintenance

For lubrication, special oil for 2-stroke gasoline engines is selected. Gasoline is used with an octane rating of 92. It is advisable not to use low-quality gasoline, as this can lead to premature failure of the saw. The proportions in which the fuel mixture must be mixed are indicated on the oil packaging. As a rule, it is taken for 1 liter of gasoline and 0.025 liters of oil.

Adjusting the chainsaw carburetor.

You should absolutely not use the saw:

• On gasoline alone, because due to insufficient lubrication, the engine will quickly fail.
• Fill with diesel fuel, as rubber and plastic parts can be damaged.
• Fill in oil not intended for 2-stroke engines, because the exhaust opening may become clogged and the piston rings may jam.
• Fill in mixtures that have expired, i.e. prepared a month ago.

READ Which Brand to Choose a Chainsaw

You can always use SAE 10W-30 oil, SAE 30-40 in summer, and SAE 20 in winter.

Chainsaw Carver RSG-45-18K – parameters and equipment

This tool comes standard with a reliable 2-stroke motor that meets EPA EU-II standards. The engine stands out for its modest fuel consumption and low noise level.

To start the internal combustion engine, the model is equipped with a simple but very reliable manual starter. A forced air supply system is responsible for cooling the cylinder.

Features of this Carver chainsaw include:

• power – 2.5 l. With.;
• the recommended length of the tire used is 15–18 “;
• number of cutting chain links – 72;
• ready-to-use weight: 6.7 kg.

The Carver 45 18K chainsaw is equipped with a metal crankcase, which extends the life of the bearings and crankshaft seats.

Chainsaw Carver 245 – description and advantages

The semi-professional chainsaw Carver RSG 245 is designed for use on small farms. The chainsaw is capable of sawing small logs and cutting down trees with a trunk up to 40 cm thick.

This Carver model includes a 2-stroke gasoline engine with a cylinder capacity of 45 cm3. The walls of the latter are coated with a protective chrome-plated composition that prevents rust. This makes it possible to use the tool in high humidity conditions.

Saw features include:

• power – 2.2 l. With.;
• the recommended length of the tire used is 15–18 “;
• number of cutting chain links – 72;
• ready-to-use weight: 6.9 kg.

The body of this Carver model has easy access to the main consumables. This simplifies the maintenance and repair of the tool in the field.

User reviews

For informational purposes, we provide examples of real reviews left by visitors through the comment form.

Review from Evgeniy: “What I really liked is that the chainsaw starts without any effort. You just have to pull. He saws quite quickly. The diameter of the log is up to 40 cm easily. At this price, it’s an absolutely indispensable device in my garden.”

Review from Maxim: “The quality of the plastic could be better. But this is a question for the manufacturer, not for the designers. There are no big complaints. The unit works well. In general, the price is really reasonable.”

Chainsaw Carver RSG-38-16K – areas of application of the model

This semi-professional tool is actively used in gardening and public utilities. The torque reserve makes it possible to use the saw for sawing logs and beams in construction. Light weight and ergonomic handles make this Carver model suitable for cutting dry branches in forest felling.

The model is equipped with a reliable gasoline engine with a forced air supply system and a trouble-free manual starter. The engine is distinguished by its simplicity of design, which makes it possible to quickly repair it with your own hands.

Tool features include:

• power – 2 l. With.;
• the recommended length of the tire used is 16–18 “;
• number of cutting chain links – 57;
• ready-to-use weight: 5.2 kg.

The model is durable and highly resistant to wear. This makes it possible to actively use it in bad weather conditions.

Chainsaw Carver RSG 238 – features and equipment

The basic package of this tool includes a reliable 2-stroke gasoline engine. Its operation is controlled by proprietary Clean 2 and After Charge systems. Their function is to extend the life of the engine, as well as reduce fuel consumption.

A trouble-free manual starter with the Quick Start function is responsible for starting the internal combustion engine. To dampen vibration, the motor is equipped with a system of metal dampers that absorb engine vibrations. Emergency stopping of the chain is carried out using an inertia brake.

Features of this model include:

• power – 1.7 l. With.;
• the recommended length of the tire used is 16 “;
• number of cutting chain links – 57;
• ready-to-use weight: 6.2 kg.

Despite the small cylinder volume, the Carver 238 chainsaw has a solid reserve of torque. This makes it possible to use it for sawing large logs and cutting down trees with trunk diameters up to 45 cm.

Carver chainsaw range

Carver range of chainsaws is represented by a wide variety of models that differ in power and type. All chainsaws are designed for cutting down trees or forming a crown. Easily cope with cutting branches of any thickness. With the help of such a chainsaw, it is convenient and quick to prepare firewood and saw trunks both crosswise and lengthwise. With the help of the easy start system, starting the chain saw is easy even with a cold engine.

In order for the operator to work comfortably, a vibration damping system is provided.

Absolutely all models provide easy access to the air filter. This is done so that the owner can carry out maintenance himself. The saw is equipped with a toothed stop that ensures cutting accuracy. Automatic chain lubrication means you don't have to worry about this. The only thing you should do is maintain a sufficient oil level in the tank.

The presence of an instant brake ensures safety for the operator. The strong material used for the case is able to withstand temperature changes.

READ How to Set the Ignition on a Stihl Chainsaw

RSG-45-18K

The model is intended for domestic use. The power of the unit is 1.8 kW, the bus length is 45 cm. Its advantages include:

• An engine whose design allows you to save up to 20% fuel.
• Integrated metal toothed stop for improved sawing accuracy.
• Chain of increased strength and performance.
• Metal crankcase improves heat dissipation and increases wear resistance of bearings.
• A primer that makes it easier to start after a long break in work. The significance of this device is especially important because... This chainsaw model does not have a quick start system.

Chainsaw Carver 72 - description and advantages

The Carver model in this configuration stands out for its high power and a significant reserve of torque. The tool is used primarily for cutting down large trees at home and for felling trees. If necessary, the saw can be used in construction and public utilities.

The model includes a reliable 2-stroke engine, an enlarged carburetor, a metal crankcase, and a durable plastic case. For ease of use, the manufacturer equipped the saw with ergonomic rubberized handles.

Carver chainsaw features include:

• power – 5 l. With.;
• the recommended length of the tire used is 20 “;
• number of cutting chain links – 72;
• ready-to-use weight: 7.4 kg.

To protect the operator, the tool includes a right-hand guard and an effective chain inertia brake.

Advantages and disadvantages

The budget-priced Carver saw has an almost complete set of functional accessories.

The list of advantages of the Carver 238 chainsaw:

• budget price, wide functionality, low-cost maintenance and high level of maintainability;
• durable and rigid metal engine crankcase;
• corresponding to the actual service life of the product, quality of materials, modern level of metalworking and installation technologies;
• convenient access to components and assemblies for repair and adjustment work;
• a fairly wide selection of affordable exclusive and standardized spare parts, allowing you to restore the functionality of the product with a moderate investment of time and financial costs.

The disadvantages of this model, many users include the relatively large weight, delivery of products with unregulated fuel equipment, and excessive consumption of chain oil, which is typical for budget chainsaws.

Chainsaw Carver RSG 241 – capabilities and parameters

This Carver model includes a 2-stroke gasoline engine with a cylinder capacity of 41 cm3. The engine consumes a small amount of fuel when working with any type of wood, and also emits a small amount of exhaust gases.

The operation of the internal combustion engine is controlled by proprietary After Charge and Clean 2 systems. They extend the life of the engine and its endurance when operating in bad weather conditions.

Carver chainsaw features include:

• power – 2.2 l. With.;
• the recommended length of the tire used is 16 “;
• number of cutting chain links – 57:
• ready-to-use weight – 6 kg.

The tool is supplied with a container for mixing fuel, a combination wrench, instructions and a spare branded tire.

Production and assembly of Carver chainsaws

The development, project and sales center is located in Russia, at the Uraloptinstrument LLC enterprise. However, to reduce the cost of the finished product, the company moved part of the production to China, reducing the cost of chainsaws and making them competitive in the market.

Operating instructions and maintenance

Each model comes with a detailed and clear instruction manual. Before starting work, it is imperative to thoroughly study it in order to protect yourself from injuries and the saw from premature breakdowns.

Carver chainsaw assembly

Special motor oil must be used as a lubricant. It is not recommended to fill the oil tank with used or dirty oil, as this will result in frequent breakdowns of the engine and components. Pure gasoline is also not suitable for refueling a chainsaw.

READ What is the gap on a chainsaw spark plug?

To prepare the fuel mixture, you need to take part of AI-92 gasoline and part of oil, accurately maintaining the proportions indicated on the packaging.

After purchasing a new saw, it needs to be broken in. This is done to start all the mechanisms, warm them up and check their operation. Running in is very simple: you need to start the saw and put it in working condition on a flat surface, for example, the floor, and leave it for a few seconds.

It is also necessary to sharpen the chain from time to time.

For these purposes, you can use a file (included with some models), a machine (usually found in craftsmen and service centers) or a grinder. The third sharpening method is not suitable for beginners, so it is better to sharpen it either with a file, or take the chain to a service center, where qualified specialists will work with it.

Mixing Oil and Fuel for Carver Chainsaws

Important! Take safety precautions when shaking the mixture.

Use only the recommended proportions and try not to prepare the fuel mixture for future use, because it loses its quality. In order to make the mixture correctly, you must first pour oil into the container that comes with the kit, and then add some gasoline into it. Mix the resulting mixture thoroughly and add the remaining gasoline.

Important! If you mix poorly, the piston may jam.

Carburetor adjustment

The principle of adjusting the carburetor is simple and is carried out in steps:

• Adjust the motor at low speed until smooth operation is achieved.
• At maximum speed, adjust the supply of the fuel mixture.
• Adjust at idle speed.
• Check operation in all modes.

Chainsaw Carver RSG 225

A compact, small-sized saw that will become an indispensable assistant for owners of a private or country house, garden or plot. A lightweight 1 horsepower engine with a 30 cm long tire allows you to easily cope with small beams, branches and thin trees, the diameter of which does not exceed 25 cm.

The automatic chain lubrication and vibration damping system make using this model the simplest and most convenient.

Carver chainsaw assembly

Chainsaw Carver 262 – characteristics and equipment

The tool stands out for its increased power and torque reserve. This expands the functionality of the saw and makes it suitable for performing any tasks in everyday life, construction, and felling.

The model consists of a 2-stroke gasoline engine with a volume of 62 cm3. The internal combustion engine is started using a standard manual starter, and its cooling is carried out using a forced air supply system.

Features of the Carver model include:

• power – 3.2 l. With.;
• The recommended length of the tire used is 18–20 “;
• number of cutting chain links – 76;
• ready-to-use weight: 7.6 kg.

This Carver chainsaw is equipped with a manual fuel pump, which makes it easier to start the engine at low temperatures.

Adjusting the carburetor of the Carver chainsaw

Adjusting the carburetor of a Carver chainsaw is required if the tool is unable to start, or if there is a sharp increase in the amount of fuel it consumes. The adjustment algorithm is as follows:

1. First, the bolts marked L and H must be moved to their base position. It is indicated in the instructions for the instrument;
2. Then you will need to start the saw motor and give it time to warm up;
3. As soon as the engine cylinder becomes warm, you need to start turning the standard bolt L in the clockwise direction. This must be done until the internal combustion engine reaches maximum speed. Immediately after this, the bolt will need to be turned back a quarter turn. Then you need to use bolt T to adjust the engine to idle, turning it in different directions;
4. Next, you will need to connect a tachometer to the Carver saw and find the maximum engine speed. To do this, the base bolt H must be turned until the speed on the tachometer matches the instructions in the operating instructions for the tool.

Finally, you will need to turn off the saw engine and then start it again. If the adjustment is made correctly, the tool’s engine will begin to operate more stably, without failures when reaching high speeds.

Rules for setting up the carburetor

You should know that the carburetor can be adjusted correctly only if:

• cleaning filters (gasoline and air) are not dirty;
• the jets and the channels leading to them are clean;
• the membranes are not damaged;
• the needle valve is working properly and the required volume of fuel mixture enters the float chamber.

READ Adjusting the Carburetor of the Hooter 52 Chainsaw

To adjust the carburetor of imported chainsaws, you must adhere to the following rules.

• Before adjustment, if possible, you should warm up the engine at idle or minimum speed for about 10-15 minutes.
• By rotating the “L” regulator, the engine is operated in such a way that it produces one and a half to two thousand revolutions per minute at idle. But you should pay attention to how the engine gains speed. When pressing the accelerator lever, acceleration should proceed quickly and evenly. If a “drop” in speed is detected, the screw should be slightly unscrewed until this phenomenon is eliminated, since it is caused by insufficient enrichment of the fuel mixture.
• When the mixture flow is adjusted at low speed, you should start tightening the screw “T” until you notice the rotation of the saw chain. After this, the screw should be unscrewed by half or a third of a turn, observing the behavior of the clutch mechanism. Normally, the saw should not rotate at idle speed.

Screw “H” compensates for under- or over-revving due to a change in fuel type, change in oil concentration or ambient air humidity.

Also, the “upper” setting can be lost if the low speed is incorrectly adjusted with the corresponding screw.

Without enough experience, it is better not to adjust the “H” screw. If adjusted by an incompetent person, there is a great danger that a too lean mixture will enter the combustion chamber at high speeds, especially under load. Such engine operation will inevitably lead to rapid wear of its piston system and failure of the ignition system.

You can start adjusting high speeds if the person who will perform the adjustment has knowledge and skills in adjusting carburetor engines. The adjuster must have at his disposal a special device - a tachometer or a multimeter with an oscilloscope function.

Setting the carburetor of a chainsaw, namely, high engine speeds, follows a simple scheme.

• It is necessary to tighten or unscrew screw “H” until, at maximum gas, the engine develops about 15 thousand revolutions per minute (according to the tachometer) or the value indicated in the manual for this unit.
• When using an oscilloscope, the spark discharge frequency should be between 230 and 250 Hz. Please note that under load the frequency may decrease by approximately 10-15%.

We can conclude that for safety, the internal combustion engine should be configured at slightly lower speeds.

The carburetor of a Chinese chainsaw should be adjusted according to the same principle as described above. There are holes on its body into which you need to insert a flat-head screwdriver to adjust the engine speed. Each hole is signed with one of the three letters. As a rule, you can see the letter “T” near the top hole, and the letters “L” and “H” near the lower ones (shown by arrows).

chainsaw Carver (CARVER) also has the same arrangement of screws The following figure shows what a carburetor from a Chinese chainsaw looks like outside the unit body.