The Chainsaw Is Not Picking Up Speed
Why the chainsaw isn’t picking up steam?
Launching is a complex multi-level process involving almost all of the saw’s life support systems. That is why the fact that the saw loses speed, turns on intermittently and feels confident exclusively at idle should be considered from different angles.
Such factors could lead to this:
- Defective motor. its service life could be exhausted, and the piston rings and cylinder could wear out, deform or even corrode;
- A failed spark plug or the coil itself. as a result, the spark required to ignite the fuel-air mixture is not generated;
- Unbalance of the carburetor screws, as well as a number of reasons that could disable it.
The main elements of chainsaws
Before starting to delve into the issues of breakdowns and tool repairs, let’s first figure out what the chainsaw itself consists of. First of all, I would like to note that this tool belongs to the category of equipment, the operation of which directly depends directly on the internal combustion engine.
It is also important that chainsaws are equipped with an engine with one cylinder, and the work of which is carried out on such kind of fuel as gasoline. It is worth noting that, despite the similarity with other tools, it does not have a gearbox. And it is replaced by a kind of single-stage chain transmission, through which the movement of the chain itself (saw) is made.
In fact, a chainsaw is a fairly simple design, but this does not prevent it from being reliable, practical and fully capable of providing direct uninterrupted and cyclical operation even in rather difficult conditions. This tool consists of a huge range of certain elements "vital" for its correct and productive work. This is a carburetor, a direct chain tensioner, a tire complete with a chain and other elements.
To simplify your choice, we have compiled for you a rating of chainsaws in terms of reliability.
If you have a limited budget, then read the article about Russian chainsaw manufacturers.
Additional Tips
First of all, what you should remember when purchasing this kind of tool is that certain parts of the saw must be replaced with new ones after their service life (passport) has ended. It is for this reason that the instructions should always be at your fingertips, since everything is described in a detailed way there.
Such parts include: an asterisk (leading), a bus, a part of a system (anti-vibration), and a chain. Since you should not forget that if this "filling" is not changed to a new one at the right time, then these worn out parts will negatively affect the rest of the chainsaw. It is for this reason that check the depth of the direct toothing quite often. Remember that it should not be higher than a week 0.5 mm.
Chainsaw does not idle
The problem is quite common. The most common causes of misbehavior when starting and spinning the chain are:
- The air and fuel filters are clogged;
- Low-quality fuel is used or the fuel mixture is not prepared correctly;
- Problems with the ignition module;
- Carburettor unit settings do not match load level;
- Deformation or rusting of engine components.
Algorithm of actions:
- The fuel hose is thoroughly flushed or replaced;
- The air filter is cleaned of all contaminants. The reusability of the filters allows them to be removed and cleaned with detergents;
- Fuel and oil are checked for quality. It is better to use the mixtures specified by the manufacturer in the instructions;
- Carburetor block and spark plugs are tested.
Often the problem is with only one part. After its elimination, the unit can be actively operated again.
There is no spark and the chainsaw does not pick up speed
The chainsaw stalls when you press the gas due to the fact that there is no spark. This can happen when there is no good contact between the tip of the candle and the wire (high voltage). However, if this kind of connection works correctly, but there is still no spark, then the whole reason is the ignition unit (electronic). It is important to note that parts of this kind cannot be repaired, so they can only be replaced.
Do not forget that by examining the spark plug, you can get significant information regarding the breakdown of the chainsaw. Since if its surface is dry, then the reason for this is the cylinder, which is not directly supplied with fuel. That is why you will have to check the entire range of its presentation step by step. If the candle is covered with black carbon, then this means that the carburetor is not working properly, that is, it either supplies a lot of fuel or pours oil directly into gasoline.
Filling the mixture when the mechanism is running
Also, the cause of a breakdown can be the direct filling of the mixture with a candle at the moment when the mechanism is started. In order to solve this problem, it is necessary to unscrew and dry the candle, but remember that it cannot be ignited in any case. Excess fuel must be drained through the hole (plug), wait 20-30 minutes, then put it back in place and try to start the tool again.
What if the chainsaw does not idle?
Idling problems are considered constant companions of chainsaws. There may be several prerequisites that could lead to glitches at the time of starting and spinning of the circuit during idle operation, the main of which are:
- Clogged air and petrol filters;
- Poor quality fuel mixture or improper preparation;
- Ignition module malfunctions;
- Carburetor whose settings have ceased to correspond to the load on the saw;
- The propulsion elements are deformed or rusted.
A number of actions are performed sequentially:
- Flush the fuel hose or replace it with a new one,
- Clean the air filter that could get clogged with sawdust and dirt particles. Modern air filters are reusable, they can be washed with the addition of detergent, completely removing them from the saw body;
- Check gasoline and engine oil, which may be of poor quality or simply not suitable for working with this saw;
- Test candles and carburetor.
Eliminating one or more possible faults usually returns the saw to its former strength.
The chainsaw is not gaining momentum: an overview of the reasons and DIY repair
Malfunctions occur both with expensive German or American modifications of chainsaws, and with their cheap Chinese fakes. It’s nice when the moment of starting the motor tool goes smoothly: the saw warms up and gradually reaches the rated power declared by the manufacturer, which is issued throughout the entire working cycle. Things are worse if everything happens the other way around: after pulling the throttle cable, the unit starts to slip, it works in jerks after short pauses, stalls and starts up again from the pusher.
There can be many reasons for this phenomenon, as well as scenarios for the development of events. Let’s consider in detail each working situation and breakdowns that preceded them.
The chainsaw does not develop speed: we test the device for malfunctions
The ignition module can be diagnosed for problems visually. For this you need:
- Unscrew the candle;
- Assess its appearance (it should not be drenched in gasoline or contain a black coating);
- Check the distance between the coil and the magnets (up to 0.2 mm);
- If necessary, examine the spark plug unit for spark supply using a working mains wire.
If, after checking, no defects were found, it is worth moving on to checking the carburetor block.
This work unit is one of the most vulnerable in modern chainsaws. New tools, which are shipped from the factory, have basic settings. for low and high speeds, which must be reset after running-in and running-in of all parts. Similar actions are performed if the saw does not develop traction corresponding to the maximum torque according to the instructions.
In this case, you need to reconfigure one of them. the "H" jack, which is responsible for the operation of the saw under load. To do this, it is enough to adjust the fuel supply with the engine running at the highest speed of rotation of the chain using a tachometer and operating instructions.
Why the chainsaw isn’t picking up steam?
Launching is a complex multi-level process involving almost all of the saw’s life support systems. That is why the fact that the saw loses speed, turns on intermittently and feels confident exclusively at idle should be considered from different angles.
Such factors could lead to this:
- Defective motor. its service life could be exhausted, and the piston rings and cylinder could wear out, deform or even corrode;
- A failed spark plug or the coil itself. as a result, the spark required to ignite the fuel-air mixture is not generated;
- Unbalance of the carburetor screws, as well as a number of reasons that could disable it.
Other chainsaw malfunctions
A lot of users are faced with a nuisance when the chainsaw does not slow down. The device reaches its maximum power in a matter of seconds, which cannot be reduced.
This may be due to the fact that:
- The throttle valve does not function. its spring or thrust element has weakened;
- The inclusion toggle switch does not switch well;
- Throttle shaft lost its spin.
But the opposite situation can also be. when the saw gains power uncontrollably. The reasons why the chainsaw itself is gaining momentum should be sought in:
- Carburetor. it needs to be cleaned or readjusted;
- Fuel supply system. petrol filter, fuel hose;
- Malfunctions of the cylinder-piston or branch pipes connecting them to the carburetor.
There are a lot of breakdowns that manifest themselves through revolutions atypical for a particular part of the working cycle. But an attentive attitude to the tool will help diagnose them in time and return it to normal operation.
What can be the reason that the chainsaw does not keep idling?
As they say, start up. it started up, and then it stalls and does not have time to move to the next power level. Many conditions can serve this:
- Clogging of filtration parts;
- Disturbances in the operation of the incendiary system;
- Lost carburetor adjustments;
- The gasoline drive is defective or damaged during operation;
- Clogged muffler or exhaust ducts;
- Faulty cylinder-piston and installed valves.
Of course, it is difficult to independently diagnose everything at once, but moving through the proposed points you can still get an answer to your question. In half the cases, it is enough to clean the carburetor, check the installation of the jets. and the job is done, the chainsaw works as before.
Regarding the carburetor, the source of malfunction can be:
- Wear of piston components;
- Its littering;
- Air filter breakage;
- The use of gasoline with a low octane number and inadequate quality;
- Damage due to vibration from the tool itself.
Each individual model is usually based on a 3-screw adjustment method, and the "H" screw will help to reach the maximum torque.
And yet, if the chainsaw does not develop speed, perhaps even the reason is not in itself, but in the time of year in which the work is being done. So, the minus mark of the thermometer is one of the factors that can completely "knock down" the chainsaw. Many users note that in severe frosts, even pouring hot oil does not help and the grease involuntarily solidifies on the tire. Ice coating of the carburetor and frost on it is also a fairly common thing. What can be done?
Reduce the use of the tool before the onset of the body, or if the design allows, change the damper mode from summer to winter, which is installed on individual models under the air filter cover.
The following actions can help:
- Checking the throttle cable;
- Inspection of the return spring, which could simply come off;
- Sealing the rear damper, which must be closed very tightly.
Usually one of these activities can make a huge difference.
Another technical problem is the situation when the chainsaw itself is gaining momentum, the reason for which is usually more than one. In this case, as well as under load, the saw may start to stall from time to time, preventing it from being fully used for its intended purpose.
Other points that could lead to such consequences are:
- Malfunctions with spark plugs;
- Problems with the carburetor or simply incorrect adjustment.
The spark plug lends itself to visual diagnostics, therefore, if it is too dry or, on the contrary, very wet, and even with a significant coating on top, it is necessary, if not to replace it with a new one, then simply clean or dry it and try it outside the saw ignition system.
All about the speed of gasoline saws
Modernization does not stand still. And the old chain chainsaws, which, besides being able to only saw through wood, emitting a terrible roar and vibration, heard almost for kilometers, are long in the past. Almost silent, sophisticated tools that are now a pleasure to hold in their hands have flooded the market, giving users a feeling of complete happiness and technical freedom.
But, to our great regret, no matter how detailed technically and visually advanced technology is, its breakdowns are a fairly frequent occurrence, which manufacturers speak about only "by default". Chainsaws are no exception, multifunctional working units that require tremendous attention to themselves from the user in order to recognize the "dirty trick" in time and stop the problem at the earliest stages.
The main such nuances usually relate to the moment of launch, which should be taken with full responsibility. Let’s look at the main processes that can occur with a chainsaw when the engine is turned on.
What to do if the chainsaw doesn’t slow down?
The opposite of the previous situation is when the gasoline tool very quickly reaches high powers and does not slow it down. In this case, it can be observed that this cannot be eliminated by either a screw on the body or by cleaning the carburetor. It would seem, what else is needed, the saw works, gives out power as in the instructions. But the trouble is that in this case, you need ten times more fuel than usual.
Stihl 250 does not develop momentum
Not gaining momentum
Many mechanisms of the mechanism are involved in the start-up, therefore, the loss of speed of the Stihl chainsaw after idling can be a consequence of various factors. Confident idling and interruptions in the motor under load can occur for the following reasons:
- Development of the engine resource;
- Wear, deformation and corrosion of the piston group;
- Faulty ignition coil or spark plug;
- Unbalanced carburetor screws.
Why does the chainsaw immediately stall and thrash when the gas is pressed
Saw repair after 10 tanks. What sellers are silent about.
Chainsaw Stihl MS 180 has some nuances that make owners nervous and is wasted on expensive.
Chainsaws are fairly reliable and simple designs. Therefore, if you properly care for them and handle them based on the manufacturer’s recommendations, then they fail well, very rarely and various kinds of breakdowns are quickly eliminated. But if you are faced with this situation and want to personally repair your tool without resorting to the help of professionals, then delve into the information provided below.
Chainsaw fuel tank
Therefore, the carburetor is directly involved in the preparation of the fuel-air mixture, the filter cleans the air from dust, the ignition unit and the spark plug create a spark, and there is lubricant in the gasoline.
That is why it is necessary to search for the causes of this kind of failure in a sequential order, starting directly from the simple ones and gradually moving on to the complex ones. And this is an important factor in the correct repair, since the person who, without thinking, begins to analyze the carburetor, brings it to risk. Since this kind of unit must be repaired or adjusted directly in special workshops (read about carburetor adjustment).
An important fact is that for the trouble-free operation of the tool, it is necessary to be quite careful about the fuel itself. Since if this kind of mixture is not prepared correctly, then most chainsaws will simply not start. Therefore, not every owner will guess to look for the cause of the breakdown in the fuel. That is why, in order for your tool to always work correctly, you need to use exclusively high-quality gasoline for the mixture.
Otherwise, overexposing the mixture directly in the canister will lead to the fact that it will lose all its octane properties and this will lead to significant problems with the instrument.
The chainsaw stalls when you press the gas due to the fact that there is no spark. This can happen when there is no good contact between the tip of the candle and the wire (high voltage). However, if this kind of connection works correctly, but there is still no spark, then the whole reason is the ignition unit (electronic). It is important to note that parts of this kind cannot be repaired, so they can only be replaced.
Do not forget that by examining the spark plug, you can get significant information regarding the breakdown of the chainsaw. Since if its surface is dry, then the reason for this is the cylinder, which is not directly supplied with fuel. That is why you will have to check the entire range of its presentation step by step.
Additional Tips
First of all, what you should remember when purchasing this kind of tool is that certain parts of the saw must be replaced with new ones after their service life (passport) has ended. It is for this reason that the instructions should always be at your fingertips, since everything is described in a detailed way there.
The main elements of chainsaws
Before starting to delve into the issues of breakdowns and tool repairs, let’s first figure out what the chainsaw itself consists of. First of all, I would like to note that this tool belongs to the category of equipment, the operation of which directly depends directly on the internal combustion engine.
Single cylinder engine
It is also important that chainsaws are equipped with an engine with one cylinder, and the work of which is carried out on such kind of fuel as gasoline. It is worth noting that, despite the similarity with other tools, it does not have a gearbox. And it is replaced by a kind of single-stage chain transmission, through which the movement of the chain itself (saw) is made.
In fact, a chainsaw is a fairly simple design, but this does not prevent it from being reliable, practical and fully capable of providing direct uninterrupted and cyclical operation even in rather difficult conditions. This tool consists of a huge range of certain elements "vital" for its correct and productive work. This is a carburetor, a direct chain tensioner, a tire complete with a chain and other elements.
It is also important that Chainsaws are equipped with a single cylinder engine, and whose work is done on a fuel such as gasoline. It is worth noting that, despite the similarities to other tools, it does not have a gearbox. And it is replaced by a kind of single-stage chain transmission through which the movement of the chain itself (saw) is made.
If you are on a tight budget, read the article about Russian chainsaw manufacturers.
At full speed
Sometimes the engine will stall after normal operation. To establish the cause, pay attention to the accompanying circumstances:
- Motor stalls in the middle of operation for no apparent reason. The starter is stationary and does not turn. It means that the tool is jammed and requires urgent repair.
- During normal operation, power is reduced in a short time and the engine stops, the cylinders are overheated. The situation indicates the occurrence of air suction under the rubber pipe between the carburetor cylinder, possibly due to a rupture. Air depletes fuel, nozzle replacement required.