Repair of chainsaws and electric saws Champion (Champion)

Features of carburetor adjustment

The carburetor is adjusted on the production line, but this does not mean that the operator does not need to make adjustments after purchasing the power unit. It is
important not to wait until the first problems appear in the operation of the device unit (or some others that will be subject to great pressure), but to adjust the speed regularly so that nothing interferes with the effective operation of the tool

If you have a little knowledge about repairing and setting up chainsaws, then read our instructions on the principle of operation of the carburetor.

Please note that it is not necessary to spend time traveling to service centers; you can adjust the screws yourself. Just refer to the instructions for your Champion gasoline chain saw model. In this manual you will find the following information:

• how to disassemble the tool to gain access to the adjusting screws (on some models it is possible to access without the need to use additional tools, which is convenient);
• how to distinguish screws and figure out which one is responsible for rotation in a certain mode of operation of the device;
• how to conduct an initial inspection of the saw, identify the problem and find out which screw needs correction;
• how to adjust the carburetor, taking into account a certain malfunction of the device.

https://youtube.com/watch?v=YOtt_p2Xu4M

Alas, not all operators have instructions for a specific Champion saw model; then a universal instruction manual comes to the rescue, which indicates the main rules for setting up the carburetor.

Important! Do not forget that incorrect adjustment of modern saws can lead to rapid wear of the engine and serious damage to important and functional components of the tool. If you are not sure that you know how the Champion 142 carburetor and new models of this brand work and are adjusted, contact a specialist

Prerequisites for setting up the carburetor

In theory, everything is simple, just regularly monitor the quality of the air-fuel mixture using screws on the carburetor. However, even with frequent maintenance of this unit, problems may arise:

• the saw set works even when the operator does not give gas;
• the device stalls as soon as it can be started;
• the device begins to “roar” at idle;
• the saw does not start at all;
• the carved tool wears out quickly (or simply unevenly);
• in different operating modes of the unit it is not possible to achieve optimal speed.

Keep in mind that some carburetor problems may only be indirectly related, but adjustment of the unit will be necessary.

If you are going to adjust the carburetor, then also look at the review of the Champion 137 chainsaw and its advantages.

Basic setup principles

Before attempting to tune a carburetor, consider the basic principles of carburetor adjustment.

1. It is easy to distinguish the screws thanks to the markings. Adjust a particular screw when you are confident that you have previously correctly identified the cause of the problematic operation of the device.
2. Different screws need to be rotated for different operating modes of the device.
3. Proceed to operate the unit only when you are sure that the carburetor screws are adjusted correctly.
4. Check the optimal speed indicators specified in the instructions for your Champion saw model.

Carburetor adjustment

To adjust the carburetor, you will need a small slotted screwdriver; as a rule, it is supplied in the kit, but if you don’t have one, then any will do, as long as it fits into the adjustment holes located on the right side of the chainsaw.

The carburetor has three adjustment screws, these are L, H and T. The first screw is responsible for the quality of the fuel mixture, the second for the quantity, and the third for precise adjustment of the idle speed.

Adjusting the carburetor of the Champion 142 chainsaw begins with the screws L and H being set 1.5 turns from the screwed state. Next, you need to start the saw and let it run so that the engine warms up a little.

Important! Adjusting the carburetor on a cold engine is unacceptable, because later, when the engine warms up, the saw will not work correctly.

Fine adjustment of screw L is carried out with the chainsaw running, the screw rotates clockwise until the moment at which maximum idle speed is observed, then it is loosened by a quarter. Fine adjustments are made using screw (T). Idle speed is considered normal if the engine runs stably and the chain does not spin.

Next, the quantity screw is adjusted; to do this, it is turned a little, after which the maximum speed is checked.

Important! Precise adjustment of the maximum number of engine revolutions is possible only with a special device - a tachometer.

If there is no tachometer, then adjustment can be made, but in order not to damage the engine by setting it to an excessive number of revolutions, after the adjustment is made, you need to loosen the screw by a third or a quarter.

Of course, the performance of the chainsaw will decrease slightly, but this ensures that the engine will not work at its limit, which significantly reduces its service life.

For a simpler look at setting up the carburetor and idle speed, we recommend looking at an interesting article about setting up a carburetor on a Chinese saw.

User manual

All operating instructions for chainsaws can be viewed on the company’s official website. Models of the same series differ slightly in terms of use; as a rule, this parameter is standard for all chainsaws. At the same time, the manufacturer may make some changes to the manual. That is why, before and during the purchase of Champion products, it is necessary to review the characteristics and operating instructions.

All chainsaws of this brand have standard instructions regarding safety precautions and rules of use in their instructions. In addition, on the last pages of the manual, the manufacturer places a table indicating the frequency and rules of maintenance. In some models these tables are the same.

Basic operating rules:

It is necessary to start performing work with a chainsaw only after reading the instructions and undergoing training (for beginners) with a sales consultant. Particular attention should be paid to assembling and setting up the saw. All actions should be performed based on the recommendations in the instructions

Before use, it is recommended to make sure that all parts are well secured and the saw is functioning without failure.

Handle the tool carefully. Do not place the saw on the ground with the engine running.

When leaving the equipment for a long time, it is necessary to drain the fuel fluid and oil. When choosing oil, you should pay attention to the manufacturer's recommendations. As a rule, this is oil from the manufacturer Champion for two-stroke engines and gasoline AI 95 or 92. If the saw is used rarely, the optimal frequency of changing the fuel fluid is once every 3-4 weeks. Prolonged operation can lead to overheating or failure of the engine and components.

Every 30-40, and sometimes 50 minutes of operation (depending on the model), it is recommended to pause operation and allow the engine to cool. In more powerful models, this time is combined with refueling. Particular attention should be paid to your own safety. Thick and durable clothing, gloves, ear protection and goggles will help avoid possible injury.

• Timely maintenance will extend the life of the Champion chainsaw.
• The chainsaw should be stored and transported in accordance with the manufacturer's recommendations. Store in a dry place and transport with drained fuel and oil in a protective case.

Carburetor adjustment

If after purchase the saw does not work well, often stalls or does not start at all, the cause may be an incorrectly adjusted carburetor. The manufacturer does not recommend performing this task on your own. At the same time, if you follow the instructions of specialists, you can adjust the carburetor yourself. A video of how to complete this task is provided below.

First start

The first start of a chainsaw is usually carried out at idle and begins with a break-in. To run-in the engine, the fuel mixture is diluted in a ratio of 1:25 (oil:fuel). Next, you need to fill the reservoir of the automatic chain lubrication system and adjust the oil supply intensity. If this is not done, the oil will leak out and deteriorate the quality of sawing or will not reach the chain at all.

After completing all the steps for assembling, setting up and refueling, the saw must first be started at low speeds and gradually increase the power. It is recommended to work the next 7-9 tanks in a gentle mode, at medium power. The fuel mixture ratio during this period is 1:50.

As a rule, the Champion package includes a container for mixing fuel and oil, which will simplify the task.

As for chain tension, many models have a special function. At the same time, the manufacturer indicates in the manual how to perform this action yourself.

How to adjust the carburetor on chainsaws

To understand how to properly adjust the carburetor on a chainsaw, you need to see it, and therefore we invite the reader to pay attention to the example below

PHOTO: rmnt.ru Arrows indicate carburetor adjustment screws

To make the adjustment, you only need a slotted screwdriver, but it will not be possible to perfectly accurately adjust the carburetor without a tachometer (of course, if the person is not a mechanic or an experienced professional driver). Now let's try to understand how to adjust the carburetor in a given situation.

PHOTO: shukur.ru This slotted screwdriver is quite enough to adjust the carburetor of a chainsaw

How to adjust the carburetor of a chainsaw if it doesn’t start at all

A fairly common problem in cases where a “master” from the “I know everything” series tries to get into the settings with hands that do not grow from his shoulders. In such a case, there are standard screw positions from which you can “dance” further. First you need to tighten both screws completely (don't be too zealous). Next unscrew:

• screw L – one turn;
• screw H – one and a half turns.

PHOTO: withoutahitch.com.au Each screw is marked and there are holes in the housing for adjustment

As for the idle speed screw, the throttle must first be completely closed (screw T turned out). After this, you need to turn it one and a half turns clockwise and try to start the engine. If it doesn’t work, gradually add a quarter turn at a time until starting. When the engine starts running, the position of the idle screw is adjusted so that the internal combustion engine does not stall, but the chain remains in place.

PHOTO: xoznik.ru After this, the engine must be started and run for 8-10 minutes. During operation, preliminary adjustment of the idle speed is possible. When the engine is warm, you can begin fine tuning.

Related article:

Machine for sharpening chainsaw chains: selection criteria, design features, technical and operational characteristics of the equipment, operating principles of manual and automatic devices, review of popular models of sharpening machines.

How to correctly and accurately adjust the carburetor: step-by-step instructions

To make the information easier to perceive, we suggest looking at it on the basis of photographic examples with descriptions of actions in tabular form. The basis is a chainsaw with initial settings.

Illustration Description of action Adjustment begins with screw L (low speed). With its help, you need to find the maximum engine speed. There is no need to rush here - the change in speed does not occur instantly when the screw is rotated. When the maximum speed is found, screw L must be turned counterclockwise a quarter turn. A simple scale drawn by hand on a regular piece of paper will help with this. So the master will not be mistaken by a millimeter with the amount of rotation. When unscrewing the screw of the low speed jet, it is possible that the engine will start to stall

In this case, it is necessary to add speed using the idle speed screw (T). During the adjustment process, in addition to the speed standards, you should also pay attention to the exhaust. Blue smoke will indicate that the mixture is too rich, and a crackling sound from the muffler will indicate that it is too lean. It is better to adjust the maximum speed nozzle screw using the tachometer, but you can do it the old fashioned way

To do this, press the throttle all the way, then use screw H to find the maximum speed, and then turn it a quarter clockwise. But it should be remembered that maximum speed is dangerous for the engine, which means this procedure must be performed as quickly as possible. After making all the adjustments, you can test the tool by checking the operation of the engine in all modes

You can learn more about the master class on adjusting the carburetor of a chainsaw in this video.

Source

Adjusting the Carburetor of the Champion 142 Chainsaw with Your Own Hands

Do-it-yourself carburetor adjustment with any chainsaw

The heart of an internal combustion engine is the carburetor. Just like in the human body. in case of interruptions in work, the entire body ceases to function normally.

Content

Carburetor diagnostics

You can diagnose a faulty or misconfigured carburetor yourself. If you notice the following malfunctions in your chainsaw, check the condition of the carburetor:

• the instrument gets stuck and nods;
• increased vibration, especially without load;
• The chainsaw fades when you press the gas;
• copious exhaust with the smell of gasoline;
• The engine does not start at all, with a normal spark.

Consider the design of a gasoline carburetor

This unit is designed to form a mixture of gasoline and oxygen, which is then supplied to the cylinders for ignition.

Engine designers have determined the mixture parameters in which your device will produce maximum power with minimum fuel consumption.

Accordingly, it is necessary to mix air and gasoline in certain proportions and store part of the prepared mixture until it is supplied to the engine intake manifold. This is what the carburetor does.

A needle connected to a float meters the amount of fuel entering the carburetor chamber. The air damper provides a certain volume of air. The coordinated work of the entire mechanism determines the quality of the mixture.

To set operating parameters, as well as, if necessary, adjustments (for example, when working in the mountains or when refueling with low-quality gasoline), adjustment is provided.

Unlike modern car engines, a chainsaw is a more primitive unit. Otherwise the cost will be too high.

READ Attachment for Longitudinal Cutting of Forests with a Chainsaw

Practical tips for tuning a Chainsaw Champion carburetor

Therefore, there is no correction for the formation of a fuel mixture in it, as well as many other electronic systems used in a modern LAN. These functions are assigned to the owner of the chainsaw.

They rose 100 meters above sea level, and the mass fraction of oxygen in the air changed. we enrich the mixture. The gasoline supplier has changed (unfortunately, in our realities this is an urgent problem), again you need to update the settings.

In service centers you will find yourself in the correct settings, but for money and on a bench. And in real life, you should be able to perform this procedure yourself. No one will help you with repairs in the forest.

Adjusting the carburetor of a chainsaw from a service workshop

Instructions for setting up a chainsaw. this is the technical documentation for your instrument. However, we will look at typical operations to improve the performance of the tool.

Adjusting the Chainsaw Carburetor

Do-it-yourself
adjustment of the Champion 254 chainsaw carburetor .
Initial carburetor adjustment
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Champion saw quick carburetor adjustment.

How to adjust the carburetor on a chainsaw

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carburetor adjustment
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carburetor adjustment
on.

Carburetor adjustment is within easy reach. To get to them, there is no need to remove the housing cover. The adjustment holes may be positioned differently depending on the model, but the illustration shows a typical combination.

The order is as follows

The "T" screw is for mounting the engine in standby mode. On different models it may be designated as "LA" or "S". The parameter is set by rotating the screw to the left until stable operation at minimum speed. If the engine stalls. You need to lightly tighten the screw to the right side. The operating shaft should not rotate during idling.

READ What is a Primer in a Chainsaw

If the chain moves out of place during adjustment. Unscrew the screw a quarter turn back. The more accurately you catch the moment when there are very few revolutions before the chain starts, the more economical the fuel consumption will be.

Screw “L” sets the degree of acceleration of the chainsaw when you press the accelerator. As you open the throttle, the speed should gradually increase to the maximum speed. If the chain saw stops under load, this is a sure sign that the acceleration controller is not installed correctly. It is necessary to turn the screw slightly counterclockwise, ensuring smooth, confident acceleration when opening the accelerator.

Screw "H" limits the speed of the working shaft. If you don't correct this value. there will be a failure in the ignition advance, and the chainsaw will work jerkily, or as loggers say. "bargaining". This mode may cause injury.

Models with a simplified carburetor design may lack acceleration and top speed. In this case, all operating modes of the internal combustion engine are set by the idle screw.

Symptoms of Correct Adjustment

1. At idle, the operating chain remains motionless. When adding “gas” it immediately starts moving;
2. When the accelerator is opened, the chainsaw engine instantly accelerates. The acceleration process occurs evenly, quickly reaching a maximum;
3. When the maximum speed is reached, the saw operates smoothly, without jerking. The engine sound is uniform, without detonation;
4. The exhaust system is clean and slightly bluish in color. When changing speed, only the intensity of the exhaust increases, the color does not change.

READ Which Inexpensive Miter Saw to Choose

Procedure for setting up the carburetor. In this video.

If you managed to adjust the carburetor without dismantling the chain saw blade, and the symptoms of malfunctions disappear. keep working. If not. you will have to remove the top cover of the device and dismantle the carburetor.

There is an air filter inside the cover. Typically this is a piece of foam rubber or similar material. Be careful not to get the filter clogged or wet. Then carefully disconnect the fuel line and accelerator cable from the carburetor.

They are shown by arrows in the illustration.

Make sure fuel does not enter the housing. Try to catch any remaining gasoline from the hose with a clean cotton rag. Then remove the carburetor from the housing and place it on a clean surface for disassembly and rinsing.

[tip] Advice! Before disassembling and while working, take photographs of all stages. This will help avoid errors during reinstallation. [/tip]

Try to remember (or better yet, measure and correct on paper) the position of the set screws. Otherwise, adjusting the carburetor chainsaw after assembly will be difficult due to the inconsistency of all settings.

Once the job is complete, make sure there are no “spare” parts on the assembly table and if the tool is left inside the housing.

If you have questions, see Video: how to set up a carburetor on a chainsaw.

Features of launching a Chinese chainsaw using the example of the “Hunter” chainsaw. A detailed story and, as well as its correction.

Champion chainsaw range

However, the greatest demand is for universal chainsaws of the household and semi-professional class, which no villager or summer resident can do without. With their help, you can repair a residential or commercial premises, build a house, barn, gazebo or bathhouse, prepare and cut firewood.

• Champion - 265: a powerful chainsaw designed for felling and sawing large trees;
• Champion - 55: a household tool for solving simple tasks of caring for a garden, hedges, repairs and construction work;
• Champion – 138: popular household chainsaw;
• Champion – 256: semi-professional class, will become an indispensable assistant on the farm, can be used for non-professional felling;
• Champion 254: a powerful unit with an eighteen-inch tire, designed to perform a variety of household work;
• Champion – 250
• Champion - 241: universal chain saw with a high-speed, unpretentious engine;

Champion 265-18: professional, highly productive chainsaw, can be used both for household needs and for felling forests;

• Champion - 38cc: light weight, chrome-plated cylinder, well-balanced body - these are the main differences of this chainsaw
• Champion – 335
• Champion 55 cc: the model is equipped with a powerful, high-speed engine, used by forestry and utility workers for clearing forests, bushes, and parks;

Top models

The manufacturer's catalog contains several tools that are in high demand:

• Champion 55-18: powerful, reliable and durable semi-professional saw;
• Champion 250-18: Has modest fuel consumption, is equipped with a powerful engine
• Champion 254-18: semi-professional chainsaw with excellent performance characteristics;
• Champion 237-16
• Champion 241-16: has good performance characteristics and increased engine life

How to adjust the carburetor

To make adjustments, you must first turn the maximum and minimum speed screws until they reach their highest resistance. After that, turn them back, leaving them in this position after one and a half turns. Then, the engine warms up for ten minutes at medium speed

It is important to ensure that the chain does not move. If the engine stalls, you must immediately tighten the adjustment screw until it stops.

Also, chain tension is important for proper operation of the Champion chainsaw. You can do it yourself

Poor tension can cause the chain to fly off the bar or damage it. With excessive tension, the load on the motor increases, which subsequently wears out the saw faster.

In order to adjust the chain, you need to: inspect the tensioning mechanism, which is located to the right of the side cover that secures the axle, unscrew the bolts that are responsible for fixing the tire. Adjust the tension level using the adjusting screw, move the axle forward, adjust the chain, and tighten the bolts.

Adjusting the carburetor of the Champion 137 chainsaw

Do-it-yourself carburetor adjustment is necessary if the tool does not start or stalls immediately after starting. For the procedure to help, it is necessary to clear the carburetor jets of any blockages and also get rid of any remaining air.

The chainsaw comes with a diaphragm carburetor. It is equipped with three adjustment screws marked H, T and L.

As the instructions indicate, setting up the node should be done in the following order:

1. First you need to turn off the engine and turn screws H and L 2 full turns from the fully tightened position;
2. Next, you need to start the chainsaw and let it run for 1–2 minutes;
3. After this, you need to start slowly turning screw L. Thus, you should find the maximum speed when the engine is idling. Then you will need to loosen the screw 1/4 turn;
4. You can adjust the operation of the motor at speeds up to 3 thousand per minute using screw T. If a tachometer is not used for adjustment, then this screw must be turned until the saw chain on the bar stops rotating;
5. At the end you need to set 12500 rpm. To do this, you need to use screw H. If there is no tachometer, then with the throttle valve fully open, you will need to determine by ear the operation of the engine at maximum speed. Once the rpm is reached, you will need to turn screw H 1/4 turn in the opposite direction.

By properly setting the carburetor, the saw owner will improve engine performance when idling and make the engine more responsive.

The Champion 137 chainsaw is designed for felling trees and sawing wood; it will be useful to builders when renovating houses, building sheds, bathhouses, and gazebos. Champion 137 is one of the most popular models on the post-Soviet market. It has received recognition from tens of thousands of users due to its unpretentiousness and excellent performance characteristics.

The model is equipped with a powerful, durable engine that can withstand significant loads and operates reliably in any climate zone. The chainsaw is equipped with all modern safety systems, has excellent balancing and is light weight.

1. Chromed engine cylinder.
2. Efficient air cooling system.
3. "Easy start" function.
4. Reliable chain stopping brake.
5. Automatic lubrication system.

Maintenance of Champion 137, 138, 142 chainsaws

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Chainsaws

I use a Champion 137/142 chainsaw (as written in the instructions). It worked fine, but when cutting it began to spontaneously pick up speed (I didn’t increase the gas) and stall. They told me to clean the air filter, opened it - it didn’t look particularly dirty, started it - it works without it, but I suspect that while driving from the site to the garage, it had time to cool down and the problem does not appear on a cold engine. More like a lean mixture - either the fuel filter is dirty or there is an air leak in the fuel tank-filter-hose-carburetor chain. There could also be an air leak in the crankcase, although it is extremely unlikely; with it it would either start poorly or not start at all. I purchased a Champion 138 chainsaw for work and encountered the following problem: after 5 minutes of operation, it stalls at idle after releasing the gas, after that it starts hard, seizes several times and immediately stalls. There is a suspicion of a rich mixture, because... The cold saw does not start on the choke, I start it without the choke, the spark plug is covered in black soot. Which screws should I turn on the carburetor? It's a bit far from the service center. I'll try replacing the spark plug, but I doubt it will help. Which candle is suitable for this model? In fact, the carburetor cannot be adjusted without a special key. Screw “L” must be tightened. NHSP LD Bosch Oregon NGK N6 HS8E O-U17 BPMR6F/BM6F, RDJ7Y/DJ8J - These are the spark plugs that are on this saw. I have a Champion 138-16 chainsaw in use - during operation, for no reason at all, it stalled, the spark disappeared, I changed the spark plug, the same thing. How to fix? Most likely the ignition unit. I bought and am using a Champion 137 chainsaw and problems started on the first day. After 10 minutes of working with the saw (medium load), the saw stopped gaining momentum. When the gas is released, the saw suffocates. After diagnosis in the village. c. the problem repeated itself. Idle speed is normal. What could be the reason? Most likely it looks like dirt in the carburetor or manufacturing/assembly defects.

• Malfunctions of Champion 55, 242, 240 chainsaws
• Repair of Champion 250, 254, 255 chainsaws

I bought a Champion 142 in the fall, it starts very hard, when it starts, it runs clean and stable. If you turn it off, you won't start it until it gets cold. I heard about some kind of “easy start” on this saw - what is this function? Maybe someone can tell me what to do? As for the “easy” launch, everyone has their own. Try using a syringe - no more than 1 cube - directly into the carburetor, and be sure to run it hot; if it works, it means the carburetor needs to be adjusted. Tell me how to repair the Champion 142 chainsaw. Symptoms: during operation, it may randomly lose power and stall, it may pick up speed without power, or it may work normally. It has been noticed that when it’s cold, and also when it’s cold (0+10 degrees), the chain saw works and starts like a clock, but at +20 and above even when it starts, sometimes it refuses or seizes and stalls. If you start it, the problem begins, as described above. What I corrected: completely cleaning the carburetor, replacing the spark plug, replacing the gasket on the carburetor - after that the stalling began to be less. The candle is alternately wet, then black, then white, or light brown - that is, the quality of the mixture clearly fluctuates wildly. The saw hardly worked - only 2 trees were cut - normally it was only enough for them, and even then not completely. Fuel - 95. Oil - semi-synthetic from well-known brands (for 2t chainsaws/trimmers). There are no questions about the mixture - because The trimmer has been plowing perfectly on it for three years now. What else should I do? I can’t find any obvious signs of a malfunction - all that remains is to look for the method of replacing parts? I don’t like that there is no system in the occurrence of a malfunction - and the color of the candle is also a serious indicator of the problem! Is your saw still under warranty? If yes, then you need to take it to the service center and, probably, you can demonstrate this problem to them when you hand over the chain saw for repair! When they changed the carburetor gaskets - why were they changed? What is the condition of the old gaskets? Have you noticed any traces of ruptures or leakage of foreign air on them? If the warranty has already expired, then I would first try to find a temporary “replacement” carburetor and start the Champion chainsaw on it! In my opinion, only the carburetor is supplied as spare parts and there are no carburetor repair kits for your saw in spare parts? I ruled out the gas cap, gas hose and gas filter as the cause of the problem even before replacing the carburetor! Then (if you did everything correctly, as you wrote earlier - I’m talking about cleaning the carburetor with complete disassembly) I would remove the carburetor and muffler and make intake and exhaust plug plates and try to “pressure” it with excess pressure of about 1 atm (serviceable seals in the crank the chamber must “hold” such excess pressure) the engine to determine the location of extraneous air leaks into the engine! Check the gasket between the crankcase and the cylinder! And only then would I completely disassemble the Champion chainsaw and look at the condition of the main bearings and oil seals and the gasket at the junction of the two halves of the crankcase! The condition of the piston and part of the cylinder can be seen with the carburetor and muffler removed from the chainsaw! Of course, it is better to fix such malfunctions under warranty in a service workshop with a warehouse of spare parts or a well-equipped garage, when there is compressed air and all the equipment for testing the engine! The easiest place to find a replacement carburetor is there! It seems to me that the ignition system has nothing to do with it! Here is a plan for identifying a malfunction! There is a problem with the Champion 137-16 chainsaw; gasoline does not flow into the hot carburetor. symptoms - there is only air in the fuel button (aka nipple). If you start a hot saw, the saw will start working and gasoline will flow. when the tank runs out or the saw is stopped for a couple of minutes, then again there is no gasoline from the carburetor. When cold, everything pumps and everything works. cleaned all filters. I checked the fuel flow by removing the hose from the carburetor. the stream is good. what could be the problem and how to fix it? I have never encountered a situation where the valves stopped working when hot, at least at the carburetor primer, and then resumed working after cooling. Take it to the service center; based on your description, I can’t localize the fault. The primer either pumps or it doesn’t, there is no other option, there is nothing there to break - to repair itself. Or try without a primer at all, turn off the primer, remove the tubes from it, and squeeze them. Well, you'll have to work more with the starter when it's cold. Chainsaw Champion 137, for some time now there have been problems with speed. At idle, the chain quietly crawls along the tire, if you hold the throttle trigger for a long time under load, then the chain doesn’t even think about stopping, it rushes at idle like crazy, until I slightly pull out the choke control lever - it helps. Something has changed here too. Previously, I started a cold engine according to the instructions: close the air, pull the starter, open the air, start it. Now, even if you manage to start it this way, the Champion chain saw almost immediately stalls as soon as you press the gas trigger, and sometimes even without it. With the throttle closed, it starts without problems, but even here, when you press the gas, it sometimes choke and stalls if you hurry and don’t let it warm up at idle (while the chain flies at crazy speeds). And she began to consume a lot of oil; it takes more than two tanks of oil to fill a tank of mixture; after work, the entire chainsaw is dirty with oily sawdust. Previously it was the other way around, up to half of the oil in the mixture tank, although before I used oil intended for preparing the mixture, but now to lubricate the chain I use the usual cheap one for two-stroke engines. I can’t imagine how connected all of this can be, I just listed what became alarming. What do you advise? Take it to a service center for diagnostics. There can be a lot of reasons - air leaks, carburetor wear. Regarding the oil, you need to inspect all the holes for the passage of oil and perhaps a dull chain that is not capable of producing large sawdust throws out small things like a file. Some pumps have an oil flow regulator, as well as the wrong type of oil, a thinner one - change the oil. I use a Champion 138 chainsaw, this is my first saw. It starts normally if you release the throttle one click down. Doesn't pick up speed, stalls. Now, having read it, I just found out that the chain should be automatically lubricated), which means it’s not lubricated for me. Please give me some advice, what could be the reasons why it does not pick up speed (stalls) and why the chain is not lubricated? Remove the muffler and unscrew the spark plug and look into the engine with a flashlight... If there are “grooves” there, then that’s basically it – replacing the CPG. If everything is fine there and there is compression, check the fuel filter. After the break, today I cut down a birch tree with a Champion 142 chainsaw. It didn't stall at idle and started the first time. It was stored filled with oil and filled with the mixture in a bag. There was no smell of fuel in the car. The oil consumption for the chain is confusing. There is half a tank of oil for the fuel tank. Is this either due to the fact that more fuel is wasted during the break-in period or the oil supply needs to be increased? If you do not cut dry or burnt wood, then oil consumption is within normal limits. In addition, carburetors in chainsaws are initially set by manufacturers to a mixture slightly richer than necessary. In this way, they are protected from insufficient cylinder lubrication during the break-in period. When this period ends and you adjust the carburetor of the Champion saw, fuel consumption will decrease slightly, which, while maintaining the same oil consumption, will make the ratio between them more optimal. It is unlikely that it will be possible to increase the oil supply if this is not provided by the manufacturer in the pump design. Although you can experiment with the oil itself, try using a lighter viscosity oil. For work I use a Champion 137-16 chainsaw. Tell me, what is the point of spraying oil into the cylinder? It is also chrome plated. This is when the cylinder is uncoated so that the rings do not get caught by rust with oil and are preserved. The meaning of the carburetor is also unclear. You can’t spray it into the channels, but just into the diffuser, what does it do? Depending on the type of engine, the method of using this product differs. For 2-stroke engines: remove the air filter and spray the product into the carburetor of the engine running at low speeds for 10-20 seconds. The engine is turned off, the spark plugs are turned out and the product is sprayed into each cylinder for 5 seconds, turning the engine by hand if possible. Screw the candles into place. For 4-stroke engines: unscrew the spark plugs (injectors, glow plugs) and for 5-10 seconds. spray the product into each cylinder, cranking the engine with a starter or using a lever. Then the spark plugs, injectors and glow plugs are installed in place.

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Characteristics and equipment of the Champion 55CC model

This Champion chainsaw also belongs to the class of household tools. This is the most powerful saw in the Champion range. It is equipped with a professional vibration damping system.

This tool is able to last much longer than its analogues due to the presence of metal casings that protect the engine and oil sump. The main characteristics of the chainsaw include:

• Engine power – 3.2 l. With. or 2.4 kW;
• Engine volume – 55 cm3;
• The volume of the fuel mixture tank is 510 ml;
• The volume of the tank for oil lubricating the chain is 260 ml;
• Built-in standard spark plug – RCJ6Y from Champion;
• Assembled weight – 5.3 kg.

The standard equipment of the model includes a tire 45 cm long with a groove width of 1.3 mm. The set also contains a durable chain with 72 links and a pitch of 0.32 cm. This chainsaw has small dimensions. The length of the tool is 412, width – 260, and height – 275 mm.

Chainsaw device Champion 137

The design of the Champion 137 model is based on a 2-stroke gasoline engine with a volume of 37.2 cm3. The internal walls of the internal combustion engine are evenly coated with a chrome-plated compound that protects the mechanism from corrosion. To start the engine, the package includes a manual starter, and to cool the internal combustion engine, a forced air supply system is provided. The manual fuel pump is responsible for the safe start of a cold engine.

To prepare the fuel mixture, the model includes a reliable carburetor. To clean the air, the unit is equipped with a long-lasting filter. Free access to it allows you to replace a worn filter element with a new part. The electronic ignition system and a Champion RCJ6Y spark plug are responsible for igniting the fuel, and the tool’s clutch is responsible for transmitting torque.

To control the Champion 137 chainsaw, it is equipped with a throttle switch, an ignition on and off button, and a gas lever. All elements are installed at the rear of the saw, next to the operator's hands. In the same part of the Champion 137 there is a cable handle with a starter cable.

To protect the operator from accidental damage, the Champion 137 includes a guard for the user’s right hand, as well as an inertial chain brake. It is turned on and off using a separate lever.

How to adjust the carburetor on a Husqvarna 365 chainsaw

To adjust the Walbro HD 6B there are three screws on the carburetor body:

• L – low speed adjustment;
• H – high speed adjustment;
• T – idle speed adjustment.

Tuning the carburetor of the Husqvarna 365 chainsaw can be divided into two stages: preliminary tuning, fine tuning.

The carburetor of the Husqvarna 365 chainsaw can be adjusted through special holes in the body of the saw itself (the location is marked in the photo above).

Pre-setting. At the factory, when testing the chainsaw, basic carburetor adjustments are made. The basic setting is as follows: H – 1 revolution, L – 1 revolution.

After purchasing a chainsaw, it is necessary to carry out a full run-in of the engine. To do this, it is necessary that the engine runs on a rich mixture for the first 4 hours. To ensure this mode, it is necessary to set the maximum speed to 600-700 rpm below the maximum, this is about 11800 rpm.

Fine tuning. After running in the chainsaw, it is necessary to fine-tune the carburetor. First you need to adjust screw L, then screw T and only after that screw H. Before setting, it is recommended to start the chainsaw engine and warm it up for 10 minutes.

The algorithm for fine adjustment of the carburetor is as follows:

1. We adjust the jet L. We try to find the maximum engine speed by turning screw L clockwise or counterclockwise (for a more accurate determination, you need to use an electronic tachometer). When the required speed is found, unscrew screw L 1/4 turn.
2. We adjust the engine idle speed with screw T. By turning screw T, we find the idle speed recommended by the manufacturer - 2700 rpm. When the speed is found, unscrew screw T until the chain stops rotating. It is necessary to achieve a mode where the engine starts running smoothly from any position, and when the throttle is released, the chain stops rotating.
3. We adjust the jet H. Turn the screw H until it stops and unscrew it 1/4 turn. Let the saw run at maximum speed for 10 seconds. We monitor the nature of the sound. If the saw whistles at full speed, the mixture is too lean. In this case, screw H must be unscrewed another 1/4 turn. When configured correctly, the chainsaw slightly “quadruples” at high speeds (the exhaust sound is similar to the sound of a four-stroke engine). If the saw “quadruples” a lot and smokes heavily, then the mixture is too rich. In this case, screw H must be tightened slightly. Turn screw H until we achieve the correct engine sound.

Model Champion 241 16'' - advantages and disadvantages

This model has quite a lot of advantages. First of all, the improved anti-vibration system stands out among them - thanks to its presence, when working with a chainsaw, the operator practically does not feel the vibrations of the motor. The second plus is the automatic chain brake upon impact.

The only negative is the lack of manufacturer instructions on how to adjust the carburetor on a Champion chainsaw. To do this, you need to use screws L and H - These letters are located on the right side of the saw body. To adjust the carburetor, you need to unscrew these screws slightly counterclockwise. This way, you will enrich the fuel mixture with oxygen, as a result of which the saw will consume less fuel and its engine will produce real power.

The main technical characteristics of the tool include:

• Engine volume – 40 cm3;
• Power – 2.5 l. With. or 1800 Watt;
• Tank capacity for fuel mixture – 310 ml;
• The capacity of the tank for oil lubricating the chain is 250 ml;
• Weight in working condition – 4.8 kg.

The standard configuration of the saw consists of a 40 cm long bar and a 56-link chain. The set also contains a cover for the tire, screwdrivers, keys for servicing the saw and an instruction manual.

Duration and procedure for repairing Champion chainsaws and electric saws

First of all, I would like to emphasize that we always try to repair Champion chainsaws and electric saws in the shortest possible time. In most cases, repair time for Champion equipment does not exceed five days* . However, in some cases, to resolve an identified problem, we may need parts that may not be in stock at our service center and numerous partners. In such cases, the repair period may increase to a month. But such situations arise extremely rarely, and we warn clients about them in advance!

Conventionally, the process of working with our company can be divided into 5 main stages :

1. You bring a broken Champion chainsaw or electric saw to our service center.
2. We diagnose it in one business day.
3. We will contact you, describe the identified malfunction, and tell you the cost and time frame for repairs.
4. You agree or refuse the service.
5. You pick up the repaired Champion equipment.

Popular Champion chainsaws

The Champion chainsaw lineup includes more than a dozen models, which differ in equipment and engine size. The equipment for all saws is the same and has a standard set. In this article, we will focus only on the tools that have gained popularity among buyers, namely:

1. Champion 137.
2. Champion 142.
3. Champion 240.
4. Champion 250.
5. Champion 254.
6. Champion 125t.

Household chainsaws Champion 137 and 142

Both chainsaws are designed for household use and are the best-selling chainsaws in the Champion range. The 137 model was upgraded as many as 3 times during its existence. After it, model 142 was released, which is an improved modification of 137.

For some time they were even called analogues of Husqvarna 137 and 142. The tools still occupy worthy positions in chainsaw ratings.

Some characteristics

Champion 137:

• 37.2 cc engine cm, power 2.1 hp;
• tire 16 inches long;
• weight 4.5 kg.

Champion 142:

• 41.5 cc engine cm, power 2.4 hp;
• tire 16 inches long;
• weight 4 kg.

To become more familiar with the tools, we recommend reading detailed reviews of chainsaws and models. The advantages and disadvantages and characteristics are discussed in detail. Reviews from real owners are provided. Repair issues are also discussed: from troubleshooting to adjusting the carburetor with your own hands.

Champion 137Champion 142

Semi-professional chainsaw Champion 240

The 240th model is already classified as a semi-professional chainsaw and is designed for longer daily use.

Among the features, it is worth noting the richer equipment in comparison with the Champion 142. For example, the saw is equipped with an easy start system, which allows you to reduce the starting effort by almost 2 times. There is also increased fuel efficiency.

Characteristics:

• 39.6 cc engine cm., power 2.3 hp;
• tire 16 inches long;
• weight 4.5 kg.

Detailed characteristics, operating nuances, repair details and reviews can be read in the review of the Champion 240 chainsaw.

Another semi-pro - Champion 250

It is the result of improvements to the previous model. Belongs to the semi-professional class. Thanks to the powerful engine and long tire, it is perfect for harvesting firewood in small volumes.

Characteristics:

• 50cc engine cm, power 3 hp;
• tire 18 inches long;
• weight 5.05 kg.

Safety is very important when working with saws of this level. The engineers took care of the design and equipped the saw with a modern and very reliable automatic brake

It’s not entirely clear what they improved there; it seems that modern chain stopping systems have been used on all chainsaws for a long time.

Chainsaw Champion 254

Judging by the technical characteristics, this is a transitional model between two classes - semi-pro and pro. The manufacturer positions it as a household saw and does not recommend using it for long hours of daily work, although similar saws are often found on construction sites.

It is equipped with a powerful engine and a powerful headset. It is characterized by increased reliability. It will be an excellent option for collecting firewood in small quantities. A chainsaw is not suitable for light work, because... The tire itself is heavy and long. As standard, the tool is sold with a low-kickback chain.

Characteristics:

• 54 cc engine cm, power 3.3 hp;
• tire 18 inches long;
• weight 5.1 kg (assembled about 6 kg).

You can find out detailed characteristics, nuances of operation and repair, technical equipment and real reviews from our review of the Champion 254 chainsaw.

Chainsaw for tourists - Champion 125t

The 125t is a very light and compact chainsaw that is designed for camping or light work. People call such saws “brush cutters” because they are actively used by gardeners for pruning bushes.

According to numerous reviews, a chainsaw is useless for household use due to its size and low power.

Characteristics

• 25.4 cc engine cm, power 0.95 hp;
• tire 25 cm long;
• weight 3.2 kg.

Looking at the characteristics, it becomes clear that the Champion 125t chainsaw is not intended for any serious work. It's something like a hacksaw with a two-stroke motor. However, this is exactly what a tourist needs!

Typical failures of Champion chainsaws and electric saws

According to Servy statistics, the main faults are*

when working with Champion chainsaws and electric saws are:

1. The Champion chainsaw does not start, there is no spark formation reasons: faulty spark plug, faulty ignition coil (magneto), damage to parts of the manual starter, clogged fuel system, wear of the cylinder-piston group;
2. The Champion chainsaw stalls, possible reasons: clogging of the fuel system (no fuel supply), wear of the cylinder-piston group, carburetor misalignment, clogged air filter;
3. There is no rotation of the chainsaw chain, the main reasons are: wear of clutch parts (cams, springs, clutch cup), wear of the drive sprocket, wear of the bearing, chain tension is not adjusted;
4. Oil is not supplied to the chainsaw chain, the main reasons: malfunction of the oil pump parts, the lubrication channels of the tire are clogged.

1. The Champion electric saw does not start - reasons: damage to the power cable, faulty power button, wear of the graphite brushes, faulty thermal protection relay, damage to the motor windings;
2. There is no rotation of the chain of the Champion electric saw, the main reasons are: wear of clutch parts (cams, springs, clutch cup), wear of the drive sprocket, wear of the bearing, chain tension is not adjusted;
3. Oil is not supplied to the chain of the electric saw, the main reasons: malfunction of the oil pump parts, the lubrication channels of the tire are clogged.

These defects are typical for Champion chainsaws: some are more common, others less common. And they often occur due to the simplest reasons: improper operation (no maintenance), the use of a low-quality gasoline mixture (oil and gasoline) or power surges and surges, many hours of uninterrupted operation of the saw, cutting material that does not meet the technical specifications power of the chainsaw. However, with the right and professional approach, all breakdowns can be easily repaired by specialists from the Servy service center in Moscow.