The chainsaw does not pick up speed at load

No RPM on chain saw. how to find and fix it?

The most common cause of this common failure is a misaligned choke. It is necessary for the suction of air, which is required for the carburetor to enrich the fuel mixture with air. To adjust the choke, you need to adjust the carburetor. Particular attention should be paid to the operation of the power unit at idle speed. To check the operation of the engine in idling mode, you can pay attention to the condition of the circuit immediately after starting the engine. If it rotates, you need to adjust the power tool.

Another reason for this common problem is air intake. If there is an air leak in one of the chainsaw’s mechanisms, the mix is automatically depleted and spontaneously rises the chainsaw’s engine speed. In this case, the operator will need to carefully check the entire fuel system, including the carburetor, pipes, working chambers of the unit.

In some cases the chainsaw does not release rpm because the throttle cable is jammed. In this case, the power unit will ramp up to full speed on its own as soon as it is started. The problem can be solved by disassembling the throttle handle and inspecting the entire gas supply mechanism. A jammed cable would need to be adjusted or replaced completely.

Your chain saw won’t come off

A chainsaw is a worthy substitute for hand saws and axes. Nowadays almost every household has such a tool. it is indispensable for household plots, construction and renovation work. A heavy use and improper maintenance of the equipment can lead to its premature failure. But the owner of the chainsaw does not necessarily need to go to the studio. many of the defects that can happen to her during use, it is entirely realistic to remove without the aid of others.

chainsaw design and general fault classification

The basic requirement for a successful repair is the proper diagnosis of. Because to find why the chainsaw failed, and, most importantly, how to force it to work again, you should first know the features of its design.

It should be noted, it is not particularly difficult, as it includes:

• Engine (two-stroke gasoline engine);
• multifunctional part (saw bar and chain);
• the systems that make the 2 units work together (ignition, filtration, lubrication, etc.); the.д.), in other words the tool as a whole.

In order to simplify the diagnosis of faults it is customary to divide them into two main categories

often malfunctions occur in the engine systems, but other parts of the tool due to intensive use or improper care can at any time fail. How to find where exactly the breakdown happened? Conventional logic helps us here.

If the problem is in the engine, it will:

• does not start;
• stalling;
• unstable to work;
• The first thing to do is to check that the fuel tank is full of fuel;
• smoke;
• develop insufficient power.

As for all other defects, they usually manifest themselves when the engine is running normally.

Starting the engine: check the plugs

If the chain saw would not start, the first thing to do is to check that the fuel solution is in the tank. By the way, it must be prepared in the proportions indicated by the manufacturer of the engine, otherwise the tool simply will not start.

After making sure that the fuel mixture is correct and available, the ignition system should be checked. STIHL 250. my STIHL 180 chain saw does not idle on 180. STIHL chain saw runs fast at a low rpm and stops when you accelerate. To do this, look at the spark plug.

Its condition can tell you a lot:

This is an indication that the fuel mixture is not getting into the carburettor, which means the problem is not with the ignition;

is the result of an overabundance of fuel mixture, which lies either in a faulty method of starting the engine or in an improper carburetor adjustment;

is a signal of bad oil in the engine lubrication system, incorrect carburetor settings or incorrectly prepared fuel consistency.

If the spark plug is spattered with fuel, wipe it off thoroughly after removing it. The fuel system should also be cleaned. To do this, the clutch is closed and then the starter motor is actuated. Clean the soot-covered spark plug gently with an awl and an emery cloth.

When checking the plugs, pay attention to the distance between the electrodes (the usual gap is 0.5-0.65 mm), also the condition of the gasket and the presence of spark. A frayed or worn gasket must be replaced and the spark can be checked by putting on the ignition cable, connecting the cylinder and spark plug nut and starting the starter.

If the discharge does not occur, the spark plug should be changed. If there is soot on the spark plugs, it indicates that the Husqvarna 137 chain saw is working on low-quality fuel. If that’s the case, even with the latest spark plug, there’s no spark.

Do-it-yourself chainsaw repair: the fuel system

If the fuel mixture does not enter the cylinder, but the spark plug works properly, this may mean that:

To clean this unit, remove the fuel hose and check the jet. If it is weak, the filter should be taken out through the fuel tank inlet and cleaned or replaced if it is completely worn out.

The chain saw is running at high rpm

I can’t stop the engine, it just won’t start, it just won’t start, it just won’t stop.

Your chainsaw is running at high RPM

the gasket is broken and pressed out Free consultation is better on Skype ork.call the vitek or tel. than.

As a preventive measure, it is recommended that you replace the fuel filter at least once every 3 months.

It’s nothing but a hole in the fuel cap, which is cleaned with an awl.

There may be several reasons for this:

• the air filter is clogged (in this case it must be removed, washed with water, dried and put back in place);
• The carburetor options are out of order (this node should be readjusted);
• carburetor membrane integrity is broken (must be replaced);
• carburetor channels are clogged (it is necessary to disassemble and clean all parts and units).

Troubleshooting muffler problems

If at low revs, the chainsaw motor runs normally, but at high speeds begins to throttle and smoke, the muffler may be hiding in the muffler.

To check the quality of its work should be performed:

• disassembly (with imperative to close the exhaust port);
• disassembly (if the muffler is collapsible);
• cleaning of fouling by means of special detergents or dry cleaning;
• Drying (with hair dryer);
• Reassembly and Installation.

Dry cleaning without respiratory protection is not recommended. in this video you will learn one of the problems in which the chainsaw won’t run at a low RPM and will only start when the choke is turned on.and how to remove. Carcinogens present in the soot will be released into the surrounding atmosphere as dust, inhaling which is very unhealthy.

To prevent muffler clogging during chainsaw use, it is necessary to follow closely the fuel consistency and quality of its components.

Repair of the cylinder-piston group (CPG)

If the engine chainsaw does not start or can not develop normal power, it is entirely possible that the cylinder motor does not appear sufficient pressure for combustion of fuel consistency. The precondition for this may be the wear and tear of the cylinder and piston group parts. pistons, rings, bearings, etc. In order to estimate the condition of this unit, it is necessary to carry out a visual inspection beforehand having removed a silencer.

For a more complete diagnosis in the spark plug hole two-stroke motor chainsaw is placed compressometer. It is used to check the compression in the engine. You can tell about the condition of the cylinder block, but you need a complete disassembly to get a clearer picture.

If there are chips or scratches on the piston, it is clear that it must be replaced. The same applies to deformed or broken piston rings. for normal engine operation, they must be one hundred percent serviceable and clean from sludge.

Check the carburetor and see if it needs adjustment

A carburetor working properly guarantees the highest efficiency of the chainsaw, in other words it can develop its full power at a lower consumption of fuel consistency. What if the chainsaw motor runs at low rpm and chain repair. Adjustment of this node is usually performed by the factory, but its design anticipates the possibility of the option already in the process of use.

The fact that this adjustment will have to be made by the chainsaw owner is evidenced by:

• Strong vibrations or damage to the safety guard.
• Wear of the cylinder head.
• Clogged carburetor.
• Inability to start the engine or it stops after starting.
• Increase of fuel consumption and exhaust volume with a simultaneous decrease of engine power.

Adjustment of the chainsaw carburetor is carried out in serious accordance with the manufacturer’s annotation with 3 special screws, which are responsible for the highest (“M”) and low (“L”) speed, and idling of the motor (“T”) The engine is running smoothly at idle speed, (not at high RPM). To prevent unnecessary carburetor interference from an inexperienced user, some manufacturers install only one idle speed screw.

Algorithm of calibration and safety measures when troubleshooting carburetor chainsaw

Adjustment of the carburetor is done in two steps:

For the basic adjustment need to tighten the screws H and L to stop and unscrew the back 1.5 turns. The chainsaw starts perfectly, works well at idle speed, picks up speed when you press the gas. The final adjustment asks the engine to warm up in 5-10 minutes at low RPM.

The final calibration is done by turning the idle speed screw back until you obtain a small RPM of the motor (the motor must be stable and the chain must not move). If the engine stops when idling, turn the idle speed screw back and if the saw chain is still in motion, continue to unscrew it counterclockwise.

The calibration is checked by performing a test:

• Acceleration (with a gentle pressure on the gas pedal the engine should quickly gain speed to the highest rate).
• The maximum rpm (if the ignition fails, the H screw should be loosened slightly).
• Working at idle (the chain should not move, and the engine should pick up speed very quickly).

Chainsaw Chain Will Not Move? CHECK THIS OUT!

If your chainsaw isn’t familiar with the carburetor and doesn’t have the tools you need to calibrate it, call a professional. The carburetor. a very complicated unit, so any wrong action can lead to irreversible consequences, for example, the complete failure of the engine.

Other chain saw malfunctions

If diagnostics has shown that everything is alright with the engine and its systems, then the cause of malfunction should be found in other nodes of the chainsaw. common are such problems as:

• Failure of the starter motor;
• Improper operation of the lubrication system;
• The chain brake does not work properly;
• wear and tear on the saw chain, etc.д.

If the cause of tool failure is not visible to the naked eye, as in the case of the engine, you need to perform a thorough diagnosis of defects and remove them in accordance with the manufacturer’s advice and safety regulations.

If you see the first signs of power loss (low RPM) with a STIHL MC 180 chain saw, you should not continue working, but rather call in a specialist or run diagnostics and correct the problem yourself. Causes of loss of power are not numerous and to cope with them it is possible even without certain skills. The main thing is to calmly analyze the saw’s behavior and find out why it has stopped pulling (RPM has dropped), and troubleshooting is not a hard thing to do.

Chainsaw has long been a luxury and an indispensable tool for anyone who has at least some suburban area. With its help, it is to produce garden work, logging, finishing lumber is not enough else. There are a lot of chainsaw models for sale, varying in power as well as overall performance. You can make sure here. e-katalog.ru.

But no matter what kind of machinery you like cranky, chainsaws are no exception. Let’s look at the more pertinent commotions.

Husqvarna chainsaw does not rev up cause

Hi! If you are on this page, chances are your chainsaw stops when you press the gas, and you want to know what is happening and what to do about it. Well, I will try to help you solve this problem by analyzing the most common causes of this mishap, as well as methods of fixing them.

To begin with, I will immediately write to novice users that many chain saws require an engine idle for about one minute before operating. While the engine is not warmed up, the saw can stop when accelerating.

Consequently, if a heated chainsaw can idle but stops when loaded, it means that

• an improperly tuned or clogged carburetor. is the most common case;
• It’s not getting enough air, the consumption of which increases sharply with increasing speed. it means that the air filter is dirty (a rare case, because the filter gradually gets dirty, so the user first notices the loss of power);
• it does not have enough fuel, the consumption of which also increases with increasing speed. it means that the fuel filter is dirty (also a rare case);
• Well, and the most unpleasant case, if there is excessive friction between the piston and the cylinder wall due to the lack of oil in the fuel mixture. After this chainsaw operation, you are likely to fly into a piston group repair as there are obstructions on the walls In the piston and cylinder that interfere with the. files.

Not enough oil in the fuel mixture

Let’s first analyze the most unpleasant case. Why? Because it is better to make sure that the oil and gasoline are mixed in the correct ratio before performing any manipulations with the filter.

Here, however, it’s worth noting that if your saw has already been started many times (for example, about ten times) but keeps starting and then stops again as the speed increases, then it’s probably okay with the fuel. Otherwise it would be easy to stop starting altogether.

However, I recommend that you immediately dispel the slightest doubt about the fuel quality as soon as the saw stalls when you first set the speed. Because if the cause is the fuel, as mentioned above, you could find yourself in for expensive repairs. And yes, it can still do that. Dispel doubts. is to drain the old fuel from the tank and refill with freshly made, in which oil and gasoline are mixed in the right proportions.

It is better to look for the correct ratio in the manual of the saw. If you lost it, look at the ratio on the oil package. Usually it is 1:50 or 1:40. If you’re using “non-native” oil (well, for example, STIHL will also have some “native” for STIHL chainsaws), I recommend using a 1:40 ratio, even if the package says 1:50 oil.

For accurate dispensing I personally use a medical syringe and measuring container, in which you can clearly measure one liter of gasoline. I fill a liter of gasoline in the tank, fill a syringe with 25 (1:40) or 20 (1:50) cubes of oil and add it to the gasoline.

After making a new mixture, drain the previous mixture from the container we are not sure about and pour in the freshly made mixture.

Now that you have done all you can to clear up any doubts about the quality of the fuel, we move on to the next steps.

As I wrote above, when there is not enough oil on the pistons and cylinder walls, clogging can occur. and it almost always forms. If you are lucky and have no deficiencies, then with the new fuel mixture prepared in the correct ratio, the chainsaw should start working properly.

If there is irritation, the saw may start and run a few more times, after which it will not start at all. In this situation I sympathize with you, because it is likely that you will now need to replace the piston group, which will cost you a lot of money.

If the saw still starts and stalls at high speed, then we are manipulating the filters.

The air filter is dirty

It’s easy to see if the air filter is dirty. You just need to take it off and start the chainsaw without it. If the saw is working properly, it’s right, and it just needs to be replaced or flushed, depending on its type. And don’t worry about running the chainsaw for a while without dust protection. If there is not a cloud of dust around you, it’s okay.

So take off the air filter. To do this, remove the cover from the top back of the chainsaw, which is attached with either screws or just a lock that you just need to turn or tear off.

If the saw works correctly after removing the filter after starting, it means it is contaminated.

The air filter is either felt or nylon. The former resembles absorbent cotton or sintepon, and the latter looks like a fine mesh of nylon threads stretched over a plastic body. The wool needs to be replaced with a new one, but the nylon can simply be washed in soapy water, dried and put back in place.

Well then feel free to use the chainsaw.

The fuel filter is dirty

If the air filter option doesn’t work for you, then try changing the fuel. It is located in the gas tank and attached to the hose that drains the fuel from the tank.

This hose should be neatly torn away from anything and its edge where the filter is attached should be removed from the gas tank. Here the option of running without a filter, as with air, is better not to use because you can’t know for sure if there are extra impurities in the fuel.

So just replace the fuel filter with a new one and try running. If all is well, congratulations. You’ve found the cause.

Cleaning and Adjusting the Carburetor

If all of the above did not help, then it is probably necessary to adjust or clean the carburetor. It’s not recommended to do these procedures yourself, as more often than not, such attempts end up with a trip to work. So it’s best to go there right away and not disassemble anything. But if you still want to delve into it, it’s best to watch a video showing how the experts do it:

How to find out why a chainsaw breaks down and restores its performance?

Every chainsaw owner can encounter malfunctions when using a chainsaw. The tool refuses to start or shuts down during operation. Detect the problem and fix the smooth operation of the mechanism can easily be done by specialists at service centers. But if you don’t have an opportunity to go to a service center, or if you just want to save money, you can find out the cause and restore the tool independently.

How to determine why the chainsaw stalls and restore its performance?

Every chainsaw owner can encounter malfunctions when using a chainsaw. The tool refuses to start or stalls during operation. It is easy for service technicians to determine the problem and correct the machine’s malfunction. But if you can’t afford to go to a service center or just want to save money, you can find out the cause and restore the tool’s performance on your own.

The chainsaw does not decelerate. how to find and fix the problem?

The most common cause of this frequent malfunction is an improperly adjusted choke. It is necessary for the carburetor to suck in air to enrich the fuel mixture with air. To adjust the choke, you need to adjust the operation of the carburetor. In this case, special attention should be paid to the work of the power unit at idle speed. To check the operation of the engine in idle mode, you can pay attention to the state of the circuit immediately after starting the engine. If it rotates, then you will need to adjust the power unit.

Another cause of this typical malfunction is air intake. If there is an air leak in one of the chainsaw’s mechanisms, the mix will be automatically depleted and spontaneously increase the chainsaw’s engine speed. In this case, the operator will need to thoroughly inspect the entire fuel system, including the carburetor, pipes, and working chambers of the unit.

There are cases where the chain saw does not cut off because the throttle cable is caught. In this case, the power unit will independently gain revolutions to the maximum immediately after it is started. The problem can be solved by disassembling the gas handle and examining the entire gas supply mechanism. A jammed cable may need to be adjusted or replaced.

If it starts and stops

If the chainsaw starts and stops, it may be because of the carburetor or other parts. Causes of malfunction:

• Fuel does not flow properly to the engine. This is caused by a clogged breather.
• Not enough fuel in the tank. Tilting the tool sideways, the remaining fuel flows into one spot. The saw stops working because of this.
• The fuel is of poor quality.
• The spark plug insulator overheats when there is poor contact between the wire cap and the spark plugs. The contact between them becomes worse with soot or mechanical displacement.
• Spark plugs are defective.
• Fuel does not flow properly to the carburetor through the fuel filter or pump. As soon as the tool starts to rev up, it stops immediately.
• If the air filter is dirty, the engine cannot withstand the high loads and stops.
• Insufficient or no lubrication in the chain.

How to start your chainsaw correctly. common methods

Each time correctly starting up the engine of the household gasoline chainsaw, its owner ensures the coordinated and smooth operation of mechanisms of the garden tool, and also prevents the rapid deterioration of its consumables. The procedure when starting a cold engine of different models may differ slightly, but in most cases it looks as follows:

• The first step the operator absolutely must take is to set the lever that adjusts the position of the throttle’s built-in flap to its lowest position. Please note that in this mode the lever can be set only if the gas trigger is pressed. By moving the lever down, the operator closes the choke located in the standard carburetor and locks the throttle lever in the clamped position;
• Next, you need to start manipulating the starter cable. To do this, put your right foot in the “ear” located in the back of the body, and rest your left hand on the handle of the chainsaw. Then you need to pull the rope of the integrated starter of the garden tool several times sharply. As soon as the engine starts and stops, move the throttle lever up one position;

If the operator needs to start a garden tool with a warm motor, then to do this, the throttle valve position lever must be moved to the penultimate position up and pull the starter rope. To shut off the engine, the throttle position switch lever must be moved to the extreme up position.In some models of chainsaws used in the household, the factory engine is started in this sequence:

• First, the ignition must be turned on and the toggle switch turned to the appropriate operating position;
• Then you need to press the transparent plastic primer, which is required for pumping fuel into the cylinder, 5-6 times;
• The operator will then need to fully pull out the throttle control lever to adjust the position of the built in throttle damper;
• Then pull the pull cord on the recoil starter a few times. As soon as the starter motor starts and then stalls, press the throttle control lever all the way in and pull the starter lever a few more times. The instruction manual for some models says that after the engine has stopped, the choke control lever should be pressed only halfway. At the same time it is necessary to push the lever all the way down only after the engine has started and the chain saw’s engine is running stably;
• In models where the throttle trigger is fixed by pulling the throttle control lever, the engine will start at high rpm. If the throttle trigger is not locked on the chainsaw, the engine speed will be minimal. This can cause the engine to stall a few seconds after starting. In this case, start the engine of the garden tool until it warms up and starts working more steadily.

If the operator has to start the chain saw when the engine is warm, he only has to switch on the ignition and pull the starter rope abruptly several times.