Chainsaw Huter BS-52. Specifications. Assembly, first launch and running-in

Huter chainsaw carburetors - design, adjustment and repair

The carburetor is a fundamental component of a chainsaw on which the high-quality performance of the tool directly depends. One of the most common defects on Huter saws is incorrect settings. Repeated adjustment is necessary to maintain good performance and extend the life of the tool.

What carburetor is installed on the Huter BS 45 chainsaw

As stated above, this model of the Huter is equipped with a Walbro diaphragm carburetor. The advantage of such a carburetor lies in the ability to dose the quality and quantity of the fuel consistency, and also, unlike float carburetors, in the ability to work in any position.

How to install a saw made in China?

The design of the carburetor on Chinese chainsaws is no different. The installation procedure and principle are also the same and are performed in the same order. The only difficulty that may arise during work. This determines the purpose of the adjusting screws. Typically the T screw is at the top and the H and L screw are located at the bottom of the carburetor body. There may be one extra screw there.

Figure 3. Location of control mechanisms

Usually their goal is determined experimentally, slightly changing the position and monitoring the result. Once the purpose of the elements is clearly defined, further configuration is straightforward and can be done in the usual way.

Adjusting the chainsaw carburetor is an important and necessary procedure that must be performed periodically to restore normal operation of the tool. This process does not create any fundamental difficulties, but requires the user to be careful, attentive and follow safety rules. Chainsaws are usually not removed because you need to keep an eye on their position. Therefore, it is important to always remember the possibility of triggering it and exercise the necessary caution.

The adjustment should be made smoothly, with slight changes in the position of the screws, so as not to cause too sudden changes in the mode of rotation of the shaft. The result depends on the care and diligence of the user, and a properly adjusted carburetor will extend the life of the tool.

Source

Huter BS 45, a popular inexpensive chainsaw. Many users prefer not to overpay, so they choose this model.

READ Ignition From a Chainsaw to the Planet

Advantages and disadvantages of the Huter chainsaw carburetor

The positive properties of this carburetor are quite significant:

• advice on using fuel and oil only of the highest quality (gasoline not lower than AI 92);
• the need to adjust industrial carburetor options.

The design and principle of operation of the carburetor

The carburetor is one of the important parts of the chainsaw and serves to mix fuel with air and supply this mixture to the combustion chamber of the engine.

For the independent option of the Huter carburetor, it is important to know how it works and understand its principle of operation.

Walbro carburetors are ordinary in design. They have a monoblock pass-through type housing with a through hole. Inside the hole there is a diffuser - a narrowing of the passage with a fuel injection channel. There are valves on both sides: the smallest one is the throttle valve; it regulates the amount of fuel mixture supplied to the cylinder. The larger air damper serves to limit the air flow during a cool start.

Huter BS-45 chainsaw carburetor diagram

A vacuum is created in the engine cylinder and fuel is dosed into the carburetor chamber through the channel of the diaphragm pump, thanks to the bending of the control membrane and the movement of the needle to the lower position. Valves and dampers open due to the pressure difference, thereby admitting and directing these elements through channels to the diffuser, where air and fuel are mixed, sprayed and entered the engine cylinder.

Adjusting the Carburetor of the Huter BS 45 Chainsaw

Content

Do-it-yourself chainsaw carburetor adjustment

For an independent carburetor option, you need to familiarize yourself with its structure and understand the procedure for the work that is carried out to adjust the parts responsible for the proper functioning of the components of the device and parts close to it.

It is necessary to carefully handle items for the system option, and also to determine whether the set characteristics correspond to very acceptable values.

About the carburetor design

The carburetor serves to mix the flammable mixture with air while maintaining predetermined proportions. If clear doses are not followed, the proper operation of the engine is at risk. When a huge amount of air enters during mixing of the components, but there is not enough fuel, then such a mixture is considered “lean”.

Oversaturation should not be allowed, because with a larger amount of fuel compared to air, malfunctions or engine wear are also likely. Carburetor adjustment is needed not only before initial use, but also when any differences in its operation are detected. Before working with a chainsaw, do not forget to run it in.

Carburetor components

The carburetor design contains a standard set of parts, but may vary little depending on the manufacturer. Components:

1. The basis . This is a special tube that is visually similar to an aerodynamic design. Air passes through it. In the transverse direction, a damper is located in the middle of the pipe. Its position can be changed. The more it is extended into the passage, the less air enters the engine.
2. Diffuser . This is the constricted part of the tube. With its help, the air supply speed increases precisely in the segment from which the fuel comes out.
3. Channels for fuel supply. The fuel mixture is contained in the float chamber, then passes into the nozzle, from which it flows into the atomizer.
4. Float chamber . It is a separate structural element, reminiscent of the shape of a tank. Designed to constantly maintain the optimal level of fuel fluid before entering the channel from which air enters.

Don't know which chainsaw to choose? Read our article.

Are you looking for cheaper models, but reliable and time-tested? Pay attention to Russian-made chainsaws.

Or explore foreign chainsaw manufacturers such as Shtil.

What you need to have for setup

Each carburetor owner must have the necessary tools to adjust this system. There are three adjustment screws that are located on the body of the device. They have their own markings:

• L - screw for correcting low speeds.
• H - screw for adjusting high speed.
• T - regulates idle speed, in most cases used for experiments.

READ How to Adjust the Carburetor on a Champion 256 Chainsaw

Chainsaw air filter

Before adjusting the carburetor, you need to prepare the device:

1. The engine warms up, that is, it starts about 10 minutes before repairs, and turns off when starting work (see how to start a chainsaw).
2. The air filter is checked and washed.
3. The chain is stopped by turning screw T until it stops (see chain oil).

To carry out a safe repair, you need to prepare a flat surface where you can carefully place the device and turn the chain in the opposite direction. Review of the Huter BS 45 chainsaw. About starting and sawing with the Huter BS 45 saw. Carburetor adjustment. Need a tachometer. It determines whether there is a malfunction in the carburetor. When turning the screws, the sound should be perfect and absolutely smooth. If you notice squealing notes, the mixture is oversaturated.

Setup instructions

Carburetor adjustment is divided into two main stages. The first one is called basic. It is performed with the engine running. The second is performed when the engine is warm.

To carry out the carburetor setup procedure successfully, you need to read the operating instructions for a specific model in advance to identify additional features of setting up the device.

First stage

The adjusting screws for the highest and lowest speeds should be moved clockwise until the highest resistance is met. Adjusting the Chainsaw Carburetor When the screws reach the stop, you need to move them in the opposite direction and leave them at 1.5 turns.

Main stage

The engine is turned on at medium speed and warms up for about 10 minutes. The screw responsible for adjusting the idle speed should move clockwise. It is released only when the engine reaches stable operation mode. It is necessary to ensure that the chain does not move during this process.

Adjusting the carburetor on a Chinese chainsaw (practice)

Spare parts for Chinese chainsaws

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In idling mode, the engine may stall (the reason is here). In this case, you must immediately turn the adjusting screw clockwise until it stops. Sometimes the chain starts to move. In this case, turn the adjusting screw in the opposite direction.

Checking acceleration operation

Need to do a little research. Acceleration of the device is initiated. It is necessary to evaluate the proper operation of the engine during maximum speed. When the engine is functioning correctly, it means that when you press the accelerator, the speed quickly increases to 15,000 rpm.

If this does not happen or the increase in speed is too slow, you must use the screw marked L. It turns counterclockwise. Moderate movements must be observed, since the turn cannot be more than 1/8 of a full circle.

READ How to Ring a Chainsaw Ignition Coil Using a Multimeter

Maximum number of revolutions

To limit this indicator, you need to use a screw marked H. To increase the number of revolutions, turn it clockwise, and to reduce them in the opposite direction. The maximum frequency should not exceed 15000 rpm.

If you make this figure larger, the device’s engine will wear out, which will lead to problems in the ignition system. When rotating this screw, you need to take into account the ignition processes of the device. If the slightest malfunctions appear, then the maximum speed value must be reduced.

Final check at idle

Before this procedure, it is necessary to carry out a full adjustment of the carburetor components when operating at maximum speed. Next, you should check the functioning of the device in idle cold mode. When the correct adjustment parameters are achieved, you will notice that the carburetor design closely matches the following criteria:

1. When the idle cold mode is activated, the chain does not move.

Chainsaw accelerator

1. When the accelerator is pressed even slightly, the engine accelerates at an accelerated pace. With gradual deepening of pressure, you can notice that the engine speed increases proportionately, reaching the maximum permissible values.
2. When the engine is running, you can compare its sound to a four-stroke device.

If violations are noticed in the given parameters or the device has not been fully adjusted, you need to perform the main setup step again. Sometimes actions are performed incorrectly. In this case, the device may fail due to the loss of the correct node settings. In this case, you will have to contact a specialist.

Disassembling the carburetor if necessary to check or repair components

The design of different carburetor models is almost the same, so when working with them you can use the standard scheme. All elements must be removed carefully, and then laid out in the order given below , so that you can successfully place the items in place after the completion of the repair work.

Removing the Top Cover

1. The top cover is removed. Chainsaw Huter BS 45, Carburetor adjustment. carburetor malfunctions and adjustments. saw Huter series BS 45 chainsaw BS-45. On chainsaws Huter BS 45 and Huter BS 52. To do this, you need to unscrew the 3 bolts holding it in a circle.
2. The foam rubber is also removed, since it is the upper component of the filter that conducts air.
3. The fuel hose is removed.
4. The drive thrust is output directly to it.
5. The cable end is disconnected.
6. The gasoline hose can be completely removed if you systematically pull it off the fitting.

To finally prepare the carburetor for major repairs or replacement of the smallest parts, you need to carefully disconnect it from the main system . Sometimes further disassembly is required. You should unscrew the components carefully and put the fasteners in groups, as these small parts are easily lost.

READ Chainsaw Works Intermittently Works

Instructions for Chinese

To correctly configure the carburetor of a Chinese chainsaw, you must first remember the factory settings of the device, then turn on the engine. Subsequently, you will have to leave it running for several hours in order to accurately set your own parameters. Sometimes work is carried out only after ten minutes of engine operation, but many Chinese-made models require special handling.

Chinese chainsaw model

Adjustment procedure:

1. Activities begin in idle mode . Using the adjusting screws, you need to achieve a systematic increase in engine speed, so you should first let it run at low speeds. A deviation from the norm is the movement of the chain along the bus. In this case, you need to adjust the outer screws to the optimal position so that the chain remains motionless.
2. The transition to medium speed speed is carried out . Sometimes the engine starts to smoke. This defect can be eliminated by tightening the screw to supply a leaner fuel mixture.

In this case, the smoke will disappear, but the engine speed will increase. You need to adjust the settings until you reach a level where, when you press the throttle, the engine smoothly picks up speed, and no sudden jerks or interruptions are heard.

• The device's engine is being checked . The chainsaw is switched to minimum speed, and then the lever is quickly pressed. When pressed maximally, it is held for 3 seconds. If there are problems with the engine, you need to gradually loosen the screw until the optimal position is reached.
• The chainsaw should work for several hours in real conditions . You need to cut wood, and then inspect all the elements involved in this event. If there are deviations, they must be corrected using adjusting devices. When all defects have been eliminated and the optimal settings have been established to supply correctly concentrated fuel, the device setup process can be considered complete.

Take a look at the video:

Conclusion

In order for the chainsaw to work properly, you need to carefully carry out the work of adjusting the carburetor in exact accordance with their order. If any malfunctions occur in the operation of the device, you must completely disassemble it yourself. In most cases, replacement of any parts that have become unusable is required.

Read also:  Lubricating the Driven Sprocket Chainsaw Tires

By constantly checking the quality of carburetor settings and taking timely actions to improve its operation, problems with the chainsaw will not arise.

Read about which chainsaw to choose here.

Source

DIY carburetor repair

The fact that the carburetor needs repair can be determined by the following signs: unstable engine operation, excessive fuel consumption, engine power surges, popping noises.

The Huter chainsaw is not considered a difficult piece of equipment to disassemble, therefore, if you have the initial skills of a mechanic, available tools and desire, it will not be difficult to replace the parts yourself.

READ Carburetor Adjustment for Husqvarna 135 Chainsaw

What can be changed in the carburetor without contacting a specialist:

• fuel filter (washing or replacing) - when the engine jerks and sneezes;
• needle valve - if the needle gets stuck in the valve or is stuck;
• fuel pump diaphragm - wear;
• The gasket under the main chamber cover is not tight.

• disassemble and wash the carburetor if the air filter is clogged;
• tighten the bolts if they lose their fixation due to intense vibration of the chainsaw.

The Walbro company produces extended repair kits for self-replacement, which include, in fact, all carburetor parts (fuel inlet needle, rocker, rocker axle, filter meshes, membrane).

A fundamental recommendation for avoiding carburetor malfunction: do not leave the fuel mixture in an inactive saw for more than 12 hours; such negligence can lead to blockage of the channels.

The best inexpensive chainsaw for about rubles

A tool for rare and careful use on a limited budget. It requires painstaking maintenance and often repairs. Cheap chainsaws usually last three to five seasons, depending on the activity of use.

• reliable grip;
• accidental start blocking;
• the chain catcher will protect the operator in the event of a rupture of the saw set;
• difficult, as for a new person, to install the tire;
• end chain tensioner.

2 PATRIOT PT 5220 Imperial 2500 W/3.4 HP

Powerful saw with a two-stroke engine with increased service life. It starts with little effort thanks to the Easy Start system. The overrun brake and starter covers are cast from magnesium alloy. The anti-vibration system reduces stress on the hands, extending the working session. Operator safety is enhanced by a chain catcher, an inertia brake, a safety device against accidental start and a guard. The filter and spark plug can be serviced without tools. Peculiarities:

• easier engine starting;
• multi-level operator protection;
• automatic oil supply;
• lateral chain tension;
• quick access to the spark plug and air filter.

A compact gasoline saw with a 35-centimeter bar, designed for processing wood in small quantities and clearing areas of unnecessary bushes and trees. A good choice for gardeners, considering the low cost. The motor speed is adapted for sawing all types of wood, including dry wood. The high-tech electric ignition mechanism and primer make it possible to start the engine with female hands.

• fuel pump;
• advanced vibration protection;
• equipped with Oregon saw set;
• shiny cylinder.

A tool with a long bar for repeated sawing of logs with a diameter of up to 75 cm. Owners recommend doing this less often, taking into account the cost. Armed with advanced safety mechanisms: engine brake in case of reverse impact, start blocker. Rubberized handles provide a secure grip with frozen hands and prevent the transfer of vibrations from the motor to the operator. The fuel pump makes starting the engine easier.

• a long tire for sawing huge trees;
• instrumental chain tension;
• work at low temperatures;
• Difficulty in reinstalling the lid.

For the garden and cutting firewood for barbecue, the cheapest chainsaw is enough. Harvesting firewood, lumber, construction, constant sawing and making garden sculptures requires a powerful tool from a renowned manufacturer.

When to adjust it yourself, and when it’s better to take it to a service center

adjust the carburetor if you have an idea of ​​its operating mechanism and the sequence of the option method is accurately carried out. If, after adjustment at home, stability in the operation of the chainsaw is not achieved, you should contact a specialist to avoid irreversible damage to your Huter chainsaw.

Tires and chain

The bar guides the chain in operation; the greater the power of the saw, the longer the bar will be.

Low-profile chains are used for non-professional equipment. The main advantage is low vibration, but with all this, productivity decreases.

The components of a saw set (bar, chain, sprocket or drive sprocket) from different manufacturers are not compatible together. Having chosen a specific tool model and manufacturer, try to select the appropriate components from the same company.

Modifications of the Partner 350 model

The Partner model range is represented by the following modifications, any of them will be considered separately:

• Partner P350S: 2 HP\140 W motor drives a 3.8-inch chain, moving at a speed of 22 meters per second, tensioned on a 400 mm long bar - these characteristics significantly increase productivity, making this model stand out among the analog. The fuel tank capacity is 250 ml. The Partner P350S model uses new approaches to user safety: an inertial chain stopper, blocking using a special switch, a chain catcher, which allows it to be braked using various methods. The design also includes a fuel pump, which also removes remaining air and fuel from the carburetor, allowing for a smoother start.

• Partner 350 XT CHROME: the chainsaw is equipped with an engine with a power of 1.3 hp\1300 W, which is perfect for carrying out work of medium difficulty. The highest performance characteristics are provided by a chain with a tooth pitch of 3.8 inches and a bar length of 400 mm. The fuel tank capacity is 400 ml - this guarantees maximum operating time. Parts that optimize the operation of the chainsaw include a vibration damping system, which is achieved by using long-lasting steel springs. Safety is ensured by a double brake system.

• Partner 350 Chrome: has an engine with a power of 1.9 hp\1300 W. The bar length is 400 mm, the chain pitch is 0.325 inches. This significantly increases the performance characteristics of the chainsaw. The fuel tank capacity is 400 ml. The model is characterized by the highest wear resistance, which is due to its shiny coating. Safety is ensured by an inertia-type chain stopper.

READ Makita 125 Adjustable Lever

Description

A chainsaw is a saw with a chain and an internal combustion engine for working with wood and other materials. It is completely autonomous and more comfortable to use compared to an electric one.

• Household. Suitable for small jobs in the garden and plot.
• Semi-professional. They allow you to do the job quite quickly and perfectly. Will handle trees, bushes and branches.
• Prof. The most massive and productive. Designed for professional tree felling.

What carburetor is installed on the Huter BS 45 chainsaw

As stated above, this model of the Huter chainsaw line is equipped with a Walbro diaphragm carburetor. The advantage of such a carburetor lies in the ability to dose the quality and quantity of the fuel consistency, and also, unlike float carburetors, in the ability to work in any position.

Carburetor adjustment

The Huter BS 45 and Huter BS 52 chainsaws are equipped with a membrane carburetor with the ability to adjust the properties and amount of consistency. After purchasing a tool, it is recommended to slightly enrich the fuel mixture in order to compensate for the loads that arise during the piston grinding process.

Fundamentally! After the saw has worked with the enriched consistency and the parts of the piston group have rubbed against each other, the quality of the consistency should be brought back to normal.

The screw (L) is responsible for the quality of the fuel consistency. To enrich the fuel consistency (increase the fuel supply to the cylinder), the screw must be turned a quarter turn counterclockwise. After running in, return to the starting position.

If carburetor is completely out of adjustment, its adjustment is carried out using the following method:

• on a muffled saw, screws L and H are installed 2.5 turns from the one hundred percent tightened state;
• the saw starts and warms up for 5-10 minutes;
• after warming up, slowly tighten screw L. you need to find the highest idle speed, then loosen the screw one quarter;
• screw H regulates the operation of the motor at the highest speed;
• After adjusting screws L and H, use screw T to adjust the idle speed. It needs to be set in such a way that the engine works stably and at the same time the saw chain does not spin.

Fundamentally! Adjustment of the highest speed should be carried out using a tachometer. If there is no such device, then the screw is tightened until the moment when the engine begins to work smoothly and uniformly, simply picking up speed.

It is worth keeping in mind that adjustment should be carried out only after a complete diagnosis of the saw has been carried out and faults such as crankcase depressurization, air leaks under the spark plug, and carburetor gasket have been eliminated.

Last year I bought a Huter BS 45M for myself and I can say that I have only great memories from it. The saw is powerful and responsive. It simply cuts even thick trees. I didn’t do a break-in after purchase, or rather, I didn’t adjust the carburetor to increase the amount of fuel, I just added a little more oil to the gasoline.

For almost a year of operation, I only changed the tire and chain, and that’s because I was sawing various rubbish and sorted them out myself.

In order to extend the service life of the saw, I try to use high-quality lubricants and always drain gasoline and oil from the tanks if I do not plan to use the saw for more than 1 month.

I am satisfied with the saw; it seems to me that its quality is quite consistent with the price.

I am the owner of a Huter BS-45 chainsaw. I have been using it on my own farm for more than 3 years. During this period of time, I changed the starter and springs a couple of times and adjusted the carburetor. Once I had to contact the service center because I couldn’t start the saw without the help of others. The service center carried out diagnostics and found that the injector valve in the carburetor was stuck. The reason is that I left the saw with gasoline. It evaporates and only the oil remains, which is what stuck to the valve. The mechanics said that I was just screwing up, because the oil could seal the carburetor channels and it would have to be changed.

I am satisfied with the saw, I recommend it to all my friends.

Adjusting the carburetor of a Chinese chainsaw with your own hands

Adjustment is not provided on all carburetors of Chinese chainsaws. Today there are many models of household chainsaws, including European brands, whose carburetors simply do not have adjusting screws. Or there is only one idle speed adjustment screw.

Such carburetors require adjustment only when the chainsaw at idle makes too few emissions (revolutions) and sometimes stalls. Below in the text we will discuss the algorithm for adjusting the idle speed of the carburetor on a Chinese chainsaw.

Required Tools

Adjustment requires a screwdriver that fits the slots of the adjustment screws. On different carburetors they are flat, cross-shaped, with an internal or external hexagon, an asterisk, etc.

Carburetor adjustment algorithm

Before making adjustments, make sure it is necessary. All Chinese carburetors on each chainsaw undergo factory settings, which rarely go wrong. A new carburetor, or in rare cases an old one, may require adjustment.

The cause of deterioration in engine performance with symptoms similar to poor supply of the fuel mixture is, in most cases, the following:

• clogged air filter,
• exhaust windows and muffler clogged with carbon deposits,
• bad fuel.

If this is not the problem, then try adjusting the carburetor.

The engine must be warm. A cold engine and one warmed up to operating temperatures operate differently. Therefore, adjustment in cold conditions will be incorrect.

• Provide access to the adjusting screws. On some chainsaws, it is enough to remove the cover and air cleaner. On others you have to remove part of the body. On the third, the housing has holes for a screwdriver.
• The screws are marked on the carburetor or near the holes - T (or LA) L and H. The T (or LA) screw is designed to adjust the idle speed. Always located away from screws L and H, which are next to each other.
• If the chainsaw stalls when gas is supplied, the engine does not have enough fuel to develop speed. The amount of fuel is adjusted using screw H (main screw). Unscrew it 1/4 turn and give gas. If the engine begins to work better, unscrew it another 1/4 turn. (If worse, then tighten it 1/4 turn in the opposite direction).
• If the engine starts to idle, it means there is a lot of fuel, screw H is screwed back.
• The peak speed is controlled by ear or using a tachometer. The maximum speed for each chainsaw is indicated in the instructions. (10,000 – 12,500 rpm). In practice, 10,000 – 11,000 rpm in the “full throttle” position are normal values.
• By increasing the amount of fuel supplied with screw H, the quality of the fuel mixture is adjusted with screw L. It increases and decreases the amount of air in the mixture. If there is not enough air, the fuel will not burn out; as a result, the engine smokes, does not develop power and consumes excess fuel. Screw L also affects engine operation at low and medium speeds.
• After adjusting screw H, screw L is unscrewed 1/4 turn. If there is smoke in the exhaust and the engine moves from low to medium and high speeds with dips, screw L is unscrewed some more.
• Adjustment of screw L is stopped when the engine runs smoothly, moves smoothly from low to high speeds and does not smoke.

The location of the adjusting screws is highlighted with a red square. To access them, a screwdriver is enough. There is no need to disassemble anything.

Idle speed adjustment

Idle speed adjustment sequence:

• The engine is started and warmed up for 5-7 minutes.
• The screw is unscrewed, increasing the speed until the chain begins to rotate.
• Then the screw is screwed back 1/4 turn.

If you have an electronic tachometer, you need to use its readings when making adjustments. Most chainsaws should idle at 2500 rpm.

Nuances that arise in the process

Screw L should not be unscrewed too much relative to screw H. This will lead to the formation of a lean air-fuel mixture (not enough gasoline - too much air). With such a mixture, the piston is dry during operation, gets very hot and can fail.

New carburetors on Chinese chainsaws, sold separately, are adjusted at the factories to a standard number of revolutions or arbitrarily. Therefore, they may require adjustment after installation on the chainsaw.

Advantages and disadvantages

The main advantage of the BS 45 and BS 45M chainsaws is their price, which is actually half the price of rival chainsaws. You can verify this by looking at Yandex’s offers, which indicate approximate prices.

Another positive point is the availability of warranty and post-warranty service. The craftsmen of the Huter company undergo special training, so when you send your saw for repairs, you can be careful about its quality.

In technical terms, the advantages of these chainsaws are their high power and long tires, which allow you to cut thick tree trunks without much difficulty.

Curious! The Huter BS-45 chainsaw has the ability to adjust the oil supply for chain lubrication, which allows you to increase the supply of lubricant when sawing dirty wood. Because of this, the service life of the saw set can be significantly extended.

READ Ushm Diold 150 With Speed ​​Adjustment

These chainsaws have few disadvantages, but they are quite significant.

• Build quality (after purchase, they need to be tightened with screws).
• Low quality plastic parts.
• The fuel and oil tank caps quickly wear out and begin to leak (it's easy to change, but it causes inconvenience and trouble).
• The motor has a short lifespan due to the poor quality of the parts from which it is assembled.
• Weight. Working with a Huter BS 45M (BS 45) chainsaw for a long time is quite difficult. Especially if you need to cut small growths.

All the disadvantages of a chainsaw are directly related to its price. If you remove them, it will cost even more.

User manual

The instructions that come with the Huter BS 45 saw are quite detailed.

• description of the saw;
• description of the equipment;
• safety tips;
• management of the launch and operation of inventory;
• description of maintenance;
• saw chain sharpening method;
• Annotation on making a fuel mixture and refueling a chainsaw.

Fundamentally! After purchasing the newest chainsaw, you should not ignore reading the instructions. The information contained in it will help you avoid common mistakes that lead to chainsaw failure. Remember that malfunctions caused by incorrect operation are grounds for refusal of warranty repairs.

Self-repair problems

The problem in many cases is complicated by the lack of comprehensive information on repair technology. According to foreign manufacturers, after the saw has exhausted its service life, it should be scrapped, so the maintainability of many budget-level models raises reasonable doubts.

Professional-grade chainsaws are more difficult to restore.

• The problem is compounded by the high cost of spare parts.
• It is possible that to restore the functionality of individual components and mechanisms, in particular, to configure fuel equipment, special equipment will be required.

READ Can You Cut Metal With a Miter Saw?

Replacing expensive branded parts with affordable but short-lived Chinese analogues does not justify itself economically. Practice shows that these components produce a service life of 50-60% at best.

Purpose

The Huter BS 45 chainsaw is a household tool; it is not recommended to be used for industrial logging, since it has a limited resource, due to the fact that manufacturers tried to save a lot when developing it. But, despite this, the chainsaw has established itself as a reliable household assistant, with the help of which you can prepare firewood for the winter, maintain the site, and saw off anything at a construction site. Provided timely maintenance is carried out, the saw can last for more than one year.

The Huter BS 45 chainsaw is not suitable for outdoor enthusiasts, as its weight and dimensions are above average.

The chainsaw manufacturer, the German company Huter, has been represented on the Russian market since 2000.

According to the manufacturer, the Huter BS-45 saw is German, but if you look closely, it becomes clear that this is another creation of the Chinese industry, imported into our country under the German brand.

Although this is a Chinese version of a chainsaw, the fact that it is sold under the Huter gives it some advantages. The saw is covered by a warranty; the company’s specialists also carry out post-warranty repairs; there are no problems with servicing the Huter 45.

A video review of the Huter BS 45 can be seen below. After watching, you will find out what the chainsaw looks like and how it is equipped. Familiarize yourself with the main components. The video also shows how to properly start a chainsaw in cold and hot weather and how it cuts.

What is the difference between adjusting the carburetor on a Huter BS 52 chainsaw?

This chainsaw has a carburetor identical to the carburetor of the Huter BS 42 chainsaw. Therefore, the settings are made in the same sequence.

There is practically no difference, both visually and internally. At least the carburetor setup is identical.

For a successful outcome of independently adjusting the carburetor of a Huter , it is important to be aware of the principle of operation and strictly follow the instructions for adjusting it. And also do not forget that timely and proper care of the tool will ensure its long service life.

It would seem, why does summer resident who grows vegetables and fruits, or the owner of a country house with a small garden and several flower beds, need a chainsaw? The question disappears when the desire arises to build a bathhouse, update a greenhouse, knock down an old business, or simply make a bench for relaxation. Unfortunately, any mechanism periodically needs maintenance and replacement of spare parts, and for this you need to have a good understanding of the structure of the product, besides, repairing a chainsaw with your own hands will save time and money.

Equipment

The delivery set of this chainsaw is actually no different from that of its competitors and contains the following:

• chainsaw;
• saw bar;
• chain;
• adjusting screwdriver;
• combination spark plug wrench;
• protective cover for the tire;
• container for making fuel mixture;
• abstract in Russian.

Naturally, the equipment is not rich, but this is enough to start working with a chainsaw immediately after purchase.

Adjusting the carburetor on a Chinese chainsaw (practice)

Adjustment tools

To adjust the carburetor, you will need Phillips or slotted screwdrivers of varying lengths or thicknesses. The size depends on the design of this unit and the characteristics of the engine assembly. It should be noted that some manufacturers produce carburetors designed for use with special tools.

In particular, installation of Husqvarna carburetors and other imported tools may require a special screwdriver. It is advisable to clarify this issue even when purchasing a chainsaw, so that you can purchase the necessary additional equipment in advance.

In addition, washed gasoline or acetone will be needed to flush and clean the device. They are used to clean the external surfaces of the carburetor. All internal channels are washed with kerosene, diesel fuel or white alcohol. Before washing the carburetor, remove all rubber or plastic parts that may come into contact with aggressive chemicals.

Wrenches or ring wrenches are used to disassemble the carburetor. Washing of internal channels is carried out in specially designated baths; sometimes plastic syringes are used for this.

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Characteristics of BS 45

The chainsaw chain drives a single-cylinder two-stroke engine. Its volume is 45 cubic meters. cm, that’s why the name of the saw is marked 45. This volume allows you to produce 1.7 kW of power at maximum speed, which is slightly superior to the power of rival chainsaws, for example, the STIHL 180.

adjusting the carburetor on a Huter chainsaw

In the standard configuration, the saw is equipped with a long bar (45 cm) and a chain with a Husqvarna pitch of 0.325.

This length of the bar combined with good power allows you to comfortably cut tree trunks with a diameter of more than 30 cm.

The fuel consumption of the Huter 45 is slightly higher than that of the STIHL 180, this is due to the difference in piston volume. The fuel tank is 0.55 liters, enough to operate for 30 minutes.

The Huter BS-45 has an anti-vibration system and a critical chain brake system, which significantly increases the level of safety during operation. The springs of the 45th can be metal springs; there are also modifications with rubber-metal ones. It’s just that iron ones are a little more reliable, because rubber-metal ones quite often tear, they are not able to withstand the load.

The weight of the equipped chainsaw is more than 7 kg. It is quite difficult to work with such equipment for a long time. The heavy weight makes it difficult to implement it on construction sites. In terms of weight, the Huter BS 45 is very inferior to its competitors; the saw is also very noisy, producing more than 100 decibels during operation, so you must use headphones during operation.

Checking the ignition system

The first thing you need to do if your chainsaw breaks down is to inspect the spark plug by disconnecting the wire and carefully unscrewing it with a special wrench.

Components of the chainsaw ignition system: 1 – flywheel with magnets, 2 – ignition module, 3 – spark plug, 4 – high voltage wire

The spark plug is unscrewed to check its condition

• Dry. Most likely, the fuel mixture is not getting into the cylinder. The problem is not in the ignition system, so the spark plug is screwed back in.
• Heavily splashed with fuel. The reason for the excess fuel mixture lies either in violation of the starting rules or in incorrect carburetor adjustment. The spark plug is thoroughly wiped, the fuel supply is turned off and the starter is turned on to remove excess fuel and ventilate the combustion chamber. Then the candle is placed in place and the mechanism is started again.
• Covered with black soot. This may indicate the use of low-quality oil, an incorrectly adjusted carburetor, or an incorrectly calculated ratio of gasoline to oil. The spark plug should be washed, removed from carbon deposits with a sharp object (an awl or a needle), the electrodes should be wiped with sandpaper and placed in place.

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When checking the spark plug, you need to pay attention to the gap between the electrodes: 0.5 to 0.65 mm is considered normal. A damaged or worn gasket must be replaced.

A large amount of black carbon deposits on the spark plug indicates problems with the engine.

To be completely sure, you should also check for a spark. To do this, put the ignition cable on the spark plug, connect the spark plug nut and the cylinder with pliers, turn on the starter and watch for the appearance of a spark. If it is missing, the spark plug needs to be replaced. If the new spark plug also does not produce a spark, the problem is in the high-voltage wire or in a broken connection to the spark plug.

huter bs-52. disassembly

Modification Huter BS-45M

Huter BS 45 has one improved modification, which is sold under the Huter BS 45M label.

It differs from its older sister with a slightly higher power (1.8 kW) and a shorter tire. The length of the bus supplied with Huter BS is 45 m 40 cm. This model uses a chain with a pitch of 3/8, therefore the headset from the modified model is not suitable for BS 45.

Otherwise, the chainsaws are actually similar, except for the price. Usually, the modified model is little more expensive.

Sources:

https://rodinapress.ru/ogorod/karbyuratory-benzopil-Huter-8212-ustroysTVo-regulirovka-i-remont https://benzopilok.ru/brend/Huter/benzopila-bs-45.html

Chainsaw Huter BS-45 – advantages of the tool

The basic package of this model includes a 2-stroke gasoline engine with a power of 1800 watts and a cylinder capacity of 45 cm3.
The endurance of the engine makes it possible to consistently maintain high operating speeds when performing various household and construction tasks. The Huter BS-45 chainsaw is used for harvesting large volumes of wood, removing small and medium-sized dry branches, cutting down trees with a trunk thickness of up to 45 cm. In construction, the model is suitable for transverse and longitudinal sawing of logs.

The instrument includes an improved anti-vibration system. It consists of 3 metal shock absorbers, which evenly absorb significant engine vibrations. This makes it possible to comfortably use the saw at heights and in confined spaces.

This Hooter model is equipped with a fail-safe chain brake. The mechanism parts are made of hardened steel and are not destroyed by rust and high temperatures. This ensures that the brake is in good working order under all conditions.

Features of this Hooter saw include:

• The power of the standard internal combustion engine is 2.4 liters. With.;
• capacity of the standard fuel tank – 550 ml;
• possible length of the branded tire used for operation is 40–45 cm;
• the required chain pitch for cutting is 0.325 “;
• weight including headset – 7 kg.

A solid reserve of power makes it possible to use this Hooter saw for felling small forest trees and clearing their trunks of branches.