A chain saw is an indispensable tool in the household of any owner of a private house or summer cottage, as it significantly makes life easier for its owner. Cut firewood, remove excess trees, cut a hole in the wall, install an extension and much more that can be done with a chainsaw. However, this tool requires special care, since it experiences considerable loads during operation, and if it breaks, you should not immediately contact customer service for help, but try to repair the chainsaws yourself. Firstly, this will save a lot on the family budget, and secondly, knowing the structural design of the tool, you can easily carry out inspections and repairs on your own, without putting a lot of effort into it.
DIY repair
To carry out repairs at home, you need to have spare parts, tools and appropriate skills. For example, to disassemble a chainsaw, a homemade repair kit may be useful, which will take a very long time to manufacture.
Some modern semi-professional and household devices do not include the appropriate tools for adjusting the carburetor and disassembling the drive sprocket.
Possible problems
The main problem that arises during repairs is the lack of necessary information on repairs. This is explained by the fact that many foreign manufacturers believe that the saw should be disposed of after a certain period of use. Therefore, many craftsmen have certain doubts, especially when repairing budget models.
But expensive professional models also create certain difficulties:
Of course, it is possible to replace original spare parts with Chinese analogues, but judging by the reviews, this method is of little justification. Such components produce only half the resource.
Candle manufacturers: review of the best
A spark plug is not a complex high-tech product, so anyone can set up their production in a “garage environment.” This is the main trouble for the consumer, because... Despite its simplicity, it is impossible to make a high-quality product in artisanal conditions of small production. Therefore, the best spark plugs are made by large specialized companies that value their reputation. The most famous of them is Brisk.
In addition, well-known chainsaw manufacturers themselves produce spark plugs.
The following manufacturers produce high-quality spark plugs:
- Husqvarna;
- Champion;
- Stihl;
- Patriot.
These are the most famous brands, but the list is incomplete; many chainsaw manufacturers produce spark plugs themselves.
In addition to these brands, “nameless” candles from unknown manufacturers are widespread on the market. They have only digital markings and are much cheaper than branded ones. According to user reviews, they are of unstable quality. If you're lucky, they might even last long enough. Sometimes not for long. It also happens that they are sold initially defective.
Therefore, when the question arises of what to choose: a cheap option or an expensive one, for example Husqvarna or Champion (they are approximately equal in price), it is better to opt for quality.
Chainsaw design
All chainsaws have the same design, regardless of which device, domestic (Ural, Kedr, Patriot 3816, Carver - Russian production with Chinese partners) or foreign (Shtil, Husqvarna), for example, repairing a Patriot 3816 chainsaw with your own hands will be the same , as well as repairing a foreign device. Main components of the tool:
The general principle of operation of a chainsaw is simple - the master sharply pulls the cord, which starts the engine, and it, in turn, starts the saw blade. Sometimes malfunctions occur in the operation of the device; to eliminate them, you will have to dismantle the saw. Problems that may arise with a chainsaw:
The main problems that arise are related to engine problems (fuel supply, exhaust system, cylinder-piston system and ignition), or minor problems (chain problems, lubrication, tire, oil seal). It is important to look at each problem in more detail .
If the chain is simply broken, it should be replaced with a new one. There shouldn't be any problems solving this problem. Repairing other parts of the saw can take up to several hours.
Chain and cylinder-piston mechanism
Some parts experience greater loads during operation than others. Such elements include a chain, sprocket, bearings, tire, anti-vibration components, and piston assembly. Such elements can only be replaced. However, the chain can be sharpened and the cylinders can be bored. It all depends on the degree of wear and tear.
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Fuel supply
In addition to the above-mentioned clogged breather, other problems may arise during the fuel supply. The main obstacles may be:
Clogged fuel filter. To check the device for this malfunction, you need to disconnect the fuel hose and see how the fuel flows. If the flow is weak, the filter may need to be cleaned. The filter device is removed through the filler hole of the tank and cleaned; if the contamination is too strong, it is replaced.
Professionals recommend changing the filter every few months, regardless of contamination.
Lack of fuel. In this case, the problem may lie in several factors. The first is a dirty air filter. The problem is that enough air is not delivered to the carburetor, causing the engine to run poorly. The filter must be removed, cleaned, washed and dried, and then put back.
The second reason is an unadjusted carburetor. It, that is, adjustment is carried out with three screws.
And the last reason is a problem with the integrity of the membrane or contamination of the carburetor channels. As in other cases, it is necessary that the components are dry and clean.
Recommendations for use
To increase the life of the tool, you must follow some rules. This primarily concerns the saw chain and guide bars. It is recommended to replace the chain every three hours and turn the guides 180 degrees. As a result, these elements will wear out evenly, which will extend the life of the entire tool.
During operation, it is important to constantly monitor the cleanliness of the chainsaw. When sawing wood, the unit quickly becomes clogged with sawdust , which must be removed in a timely manner. Contamination of the technological holes can cause problems with the operation of the fuel system. It is also important to change oil and other consumables on time.
Cylinder-piston group
It happens that the engine does not start or functions poorly due to low pressure in the cylinder. The malfunction may consist of a piston, cylinder or bearings that have become unusable, or piston rings that have sunk. You can look at the problem in general terms; to do this, you need to remove the muffler and inspect the system.
You can measure the compression in the engine by placing a compression gauge in the spark plug hole. After time, you can draw conclusions based on the results of the measurements. The problem can only be resolved by completely disassembling the system. If scratches or chips are visible on the piston, it needs to be replaced. The piston ring must be installed in its correct place, clean and intact.
Basics
Don’t know how to disassemble a Partner chainsaw? After cleaning it with a compressor, follow the basic algorithm of actions:
- dismantling the brake chain cover;
- dismantling the saw set;
- removing the top cover;
- dismantling the handle of the device;
- starter disassembly.
This is the first step, it is recommended to complete it by re-cleaning (using the compressor again) the air duct, which may contain parts of wood dust that you did not get rid of during the first cleaning.
After this, dismantle:
- air filter housing;
- carburetor.
To prevent anything unnecessary from getting into the engine crankcase, the intake window cylinder is plugged with a rag.
Important! If desired, the muffler is removed immediately or after dismantling the carburetor.
At the last stage, the flywheel and clutch are removed using a piston stopper.
Engine
In most cases, the following problems occur in engine operation:
How to check crankshaft seals
The presence of oil seal leaks can only be checked by getting to the crankshaft itself and carefully examining it for leaks. You can see how to do this correctly in the video:
How to check compression on a chainsaw
At a compression level below 8 atmospheres, the engine will not have enough power, which means the chainsaw will not be able to fully function.
To measure compression you need:
How to properly install a piston on a chainsaw
The work of replacing the piston for most models of modern chainsaws is carried out according to the following algorithm:
All subsequent actions are carried out according to the reverse algorithm of disassembly.
Why is oil leaking?
Many owners of chainsaws are faced with the problem of oil leaking from under the unit. Most often, oil leaks due to damage to the oil hose connected to the oil pump. The photo below shows exactly the case when the end of the hose has torn and does not fit tightly onto the pump nozzle.
But to get to this place, you will need to remove the clutch mechanism from the shaft. In some models of chainsaws, oil may leak out at the junction of the oil pump with the oil tank hose (indicated by an arrow in the photo).
To eliminate the lubricant leak, you will need to pull this hose out of the seat. To do this, you can use pliers to pull the outer part. At the end of the hose you will see a rubber plug, which is the cause of oil leakage. This plug needs to be wiped well to remove any remaining oil, after which its seat needs to be sealed with something. You can use automotive sealant or fum tape, as shown in the following photo.
Next, insert the hose into the hole, install the plug in place and seal it using a flathead screwdriver. At this point, the operation to eliminate the oil leak can be considered completed.
Fuel system
Malfunctions of the fuel system are also quite often the main reason that prevents a chainsaw from working as efficiently as possible. First of all, you need to check the quality of the fuel mixture.
Some owners prefer to use alcohol-containing solutions rather than the recommended brand of gasoline, or add more oil than required.
Gasoline leaks from a chainsaw
If gasoline drops periodically appear on the body of the chainsaw, then it is necessary to check the tightness of the fuel tank. Over time, it may dry out. Or the gasket has become “stiff” and it can no longer perform its direct function.
If full-fledged gasoline streams appear, then there is a high probability that you will have to change the burst hose connecting the carburetor and the fuel tank.
Gasoline does not enter the chainsaw cylinder
There are several reasons why the fuel mixture stopped flowing into the cylinder:
Chainsaw won't idle
In this case, you should start looking for a problem with the filter elements. For the most part, it is precisely because of the reduced capacity of the air and gasoline filters that the idle speed begins to “float”.
Checking the carburetor and signs that it needs adjustment
The rated engine power and savings in fuel consumption depend on the good condition of the carburetor. The carburetor of a chainsaw has no functional difference from a car. It mixes gasoline vapors with air entering through the pipe and delivers them further into the combustion chamber.
- air duct or tube for air supply;
- fuel line or fuel supply tube for mixing it with air;
- air damper.
Read also: The iron stopped producing steam
A sign that the carburetor needs to be adjusted:
- strong vibrations due to unbalanced screws. An engine with a working carburetor runs smoothly and sounds like a four-stroke stroke;
- damage to the protection cap;
- wear of the piston system, which already requires a different mixture in composition;
- involuntary engine shutdown, inability to restart or initially start;
- an unreasonable increase in gasoline consumption, while engine power may remain the same, but most often decrease;
Filter
A “rich” or “lean” fuel mixture will sooner or later cause a breakdown. Perhaps even expensive. To prevent this from happening, it would be a good idea to regularly check the filter for abrasions, as well as for breaks in the filter fabric itself.
How to check the fuel filter and replace it
To check the current condition of the fuel filter, you must perform the following steps:
If gasoline flows unevenly and jerkily, then it’s time to install a new filter element. This is done quite simply:
How to clean the air filter
If a sufficient amount of air is not supplied, the fuel mixture becomes too rich, which leads to disruption of normal engine operation. Regular purging of the air filter, and in particularly advanced cases, washing in a soapy solution will help avoid such problems.
Please note that washing in acetone, gasoline or other aggressive solutions is not allowed. This may lead to damage to the integrity of the filter element.
Reviews of Patriot PT 3816
Alexander. 32 years. Barnaul.
3816 is my first chainsaw. I bought it on the recommendation of a neighbor about a year ago. The saw starts up and cuts well. I tried sawing the trunks of large trees, the power is enough. The saw hasn’t broken yet, I try to monitor and carry out cleaning and maintenance in accordance with the manufacturer’s instructions.
Anatoly. 30 years. Permian.
I bought a Patriot PT 3816 for gardening. I immediately noticed that it was quite heavy, but after working a little, I got used to the weight and no longer felt it. Starts great both cold and hot. Over the two years of use, I cleaned the air filter several times and changed one shock absorber, because the old one burst, the saw began to hang out and gas on its own. I am happy with my chainsaw and would recommend it to anyone who needs a reliable tool for work around the house.
Malfunction of unspecified category
In some cases, owners of chainsaws have to solve more complex problems to fully restore the functionality of their cutting tool.
The chainsaw does not develop full power
In addition to the problem discussed above with a lack of gasoline or air entering the cylinder, the cause of low power may be a clogged muffler.
If you do not periodically clean the muffler clogged with combustion products, then the problem of poor engine power may not be the only one.
Carburetor depressurization and nozzle blockage
Over time, the screws holding the carburetor cover in place can become loose or the gaskets can become unusable. A clogged filter or improper replacement can lead to clogged injectors. All this also negatively affects the operation of the chainsaw and shortens its service life.
To prevent this, it is enough to periodically inspect the saw and, if necessary, evenly tighten the screws.
Chainsaw won't idle
It often happens that after long-term transportation and constant use, a chainsaw refuses to idle smoothly. As a rule, this problem is eliminated by adjusting the carburetor.
You can learn how to properly debug the carburetor from this video:
If the carburetor is tuned like a clock, then you need to check:
Chainsaw loses power under load
If during operation the power of the saw disappears somewhere, then the problem should be looked for in the following places:
Video text
Find out how to fix the most common chainsaw problems using just two standard wrenches!
1. The chainsaw does not start 0:30 1.1. Checking the fuel mixture 1.2. Checking the spark plug of a chainsaw 1.3. Checking chainsaw compression 1.4. Checking the chainsaw carburetor
2. The chainsaw chain does not rotate 5:46 2.1. Removing the chainsaw chain from the brake 2.2. Development of a chainsaw tire sprocket
3. The chainsaw does not cut 6:45 3.1. Checking chainsaw chain teeth 3.2. Checking the sharpening of the chainsaw chain 3.3. Checking chainsaw chain lubrication
What to do if nothing helps 7:58
Stepan Latypov, director of the Belarbo enterprise, says:
Almost every village resident and many dacha owners have chainsaws on their households. They are easy to use and can be repaired yourself. Finding out the reason why the device does not start, troits, or has problems with idling is not so difficult. Despite the types of chainsaws, the principles of repair are the same.
Malfunction of other systems
In some cases, chainsaw users report other problems that do not significantly affect the operation of the tool.
Why does a chainsaw smoke?
Most often, excessive smoke appears when oil is added excessively to the fuel mixture, which does not have time to burn completely. You should also check to see if the carburetor settings have gone wrong.
Recoil when starting a chainsaw
In most cases, recoil at the moment of startup signals the decompressor clamping. If the tool is not equipped with a decompressor, then most likely the ignition system is faulty.
Application of Patriot PT 3816
Patriot PT 3816 is a non-professional chainsaw model and is intended for private use. For example, Patriot 3816 will cope with tasks such as annual procurement of firewood in small quantities, pruning tree branches in the garden, and sawing up trash. Also, the saw is used in the construction of fences for cutting wooden posts.
The Patriot 3816 saw cannot be used by professionals in industrial logging due to a lack of resources. The chainsaw parts, although made with high quality, are not designed to work in difficult conditions for a long time. The engine cylinder is entirely aluminum, which means it is resistant to long-term operation and even minor overheating. If you install a chrome-plated cylinder on the Patriot 3816, the engine life will increase significantly.
If you take a good look at the Patriot 3816, you will immediately see its similarity to standard Chinese-made chainsaws.
We invite you to watch a video about the Patriot PT 3816 chainsaw, in which the owner shows the configuration and explains the main characteristics.
Malfunctions of Chinese chainsaws: review of popular ones and ways to solve them
Buying a cheap chainsaw made in China is not particularly difficult: a huge number of gas-powered tools from the Middle Kingdom are available in markets, construction hypermarkets and online stores. However, a low price almost always hides poor quality.
The most popular malfunctions of Chinese chainsaws include:
If there is the slightest suspicion that the chainsaw is not working properly, you should immediately carry out a full diagnostic of the tool. Only with proper operation and timely maintenance can you count on a long service life of the chainsaw.
Source
Additional model characteristics
Read:
Interskol chainsaws have a huge number of positive features, among them the following should be highlighted:
- restart protection;
- ease of use;
- non-hazardous work;
- lateral chain tension.
All this applies to the above model. If we look at the features in more detail, then about convenience it should be noted that the air filter is tightly protected by a casing, which opens using a rotary wheel. The handle of the described chainsaw has a gas supply lock lever; when using it, there is an option to eliminate pressing the trigger while the engine is running.
