Patriot Chainsaw Won’T Start

Chainsaw won’t start
The main reasons and a description of the solution to the problem, if it does not start on hot, cold. Diagnostics of fuel and ignition systems with difficult starting.

Fuel and air filter

Contamination of the main filter elements of the chainsaw negatively affects its operation.

Patriot Chainsaw Won'T Start

For example, a dirty air filter will not fully supply air to the carburetor, which will affect the quality of the air-fuel mixture and normal engine starting. Contamination of the fuel filter will make it difficult or even cut off the supply of gasoline to the carburetor and make it impossible for the engine to work.

Ignition coil

The reason that a new chainsaw does not start, or does not start well, may be the ignition coil. Modern chainsaws are equipped with electronic ignition coils. This part cannot be repaired, and, as a rule, if there is a defect, it changes completely.

Carburetor adjustment

Incorrect carburetor adjustment will cause the chainsaw to not develop full power. It will be difficult to start, or not at all. The carburetor setting directly affects the quality of the air-fuel mixture, which is necessary for normal engine start and further operation.

An excess of gasoline in the mixture is called overflow. The characteristic sign of overflow is a wet spark plug, after several unsuccessful attempts to start the chainsaw.

Spark plug

The spark plug is one of the main elements of the ignition system. A spark is formed on its electrodes, and if this element fails, it will be difficult to start, or not at all possible.

The spark plug can fail completely, or work intermittently or give out a weak spark. It is quite simple to check the spark plug, for this you need to unscrew it from the engine, attach it to the high-voltage wire cap and, putting it on the cylinder, pull the starter. If the candle is in order, the spark will be powerful with a bluish tinge. A faint spark with a reddish tint indicates a problem. The defective spark plug must be replaced.

Reduced compression

One of the frequent cases of difficult starting of the chainsaw is the wear of the CPG (cylinder-piston group).

As you know, for the normal start of a chainsaw, compression must be present in its engine. It is necessary for the normal compression of the fuel mixture in the engine cylinder, it also affects the operation of the fuel pump.

The reasons for the lack of compression, or its reduction, may be natural, because the engine wears out during operation. Also, problems can be caused by a serious breakdown, for example, a scuffed CPG, or a broken piston ring.

A sign of reduced compression is a weak resistance of the starter when starting. With reduced compression, a decrease in the power of the chainsaw is observed, which negatively affects its performance. The problem is eliminated by replacing the piston rings, or completely by the CPG.

Clearance between ignition coil and flywheel

An incorrectly set gap between the flywheel and the contacts of the ignition coil affects the quality of sparking, which in turn is responsible for normal start-up and stable operation of the engine.

Causes and remedies

Undoubtedly, after reading this heading, you continue to read this paragraph and this is not surprising.

In fact, there are a lot of reasons for this kind of failures in the operation of the tool, and now we will try to deal with the main ones. So let’s get started:

It starts badly on a cold

The answer to this question is unambiguous. There is no compression. This happens. The rings, most likely, through long-term use, are simply worn out, therefore, when you try to start the device directly in a cold state, then not enough compression to trigger directly.

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But given the fact that most of the “literate” people begin to pull the handle systematically, while the rings produce friction against the sleeve, therefore, oil and gasoline get on them, the degree of compression rises and the engine starts. And when the chainsaw is already warmed up, then of course it will start to start.

But this kind of manipulation is quite harmful to the device, since several times you will achieve the desired effect through such actions, but the time will come when the chainsaw can finally break. Therefore, the best thing you can do is change the rings that are already worn out. This is not a complicated process, so you can completely deal with it yourself without using the services of the service.

There is a spark, the candle is wet

First of all, it is necessary to remove the muffler and carefully inspect the piston, since this is where the problem may be hiding. In addition, most owners ask themselves: why the chainsaw starts and stalls, while there are supposedly no problems with the candles?

But this is an erroneous opinion and one does not need to be so sure in this case, as there are situations when the candle sparkles perfectly in air, but does not work directly in the cylinder.

The reason for this may be direct violation of a kind of compaction in the channel area (impulsive). Or so de there is a kind of development of crankshaft oil seals, but this feature is found in very rare cases.

But if you notice a similar malfunction of your chainsaw, then do not postpone the repair indefinitely and it is best if it is done by professionals. Otherwise, you can simply simply “break” the piston.

Chainsaw Stihl ms 660 is the most economical of the entire line of Stihl chainsaws. Its price ranges from 3,100 to 5,500 rubles.

Chinese chainsaw does not work

First of all, what I would like to note is that Chinese devices are quite reliable and powerful, at least as practice shows. And the reasons for its breakdowns are not much different from all other models from other manufacturers. But there is one feature that does not tolerate negligence in relation to chainsaws of Chinese manufacturers, namely fuel, which is poured directly into it.

Since many “smart people” believe that the main thing is to fill, and what to fill does not matter, and so it will do. And then they wonder why the device does not work.

Therefore, special efforts in eliminating this problem are not needed, simply use oil and gasoline from the manufacturer who “created” your chainsaw and everything will be fine. Look in more detail at:

Why the chainsaw does not start and there is no spark. Causes and remedies

Today, it is probably difficult to find an owner who does not have such a versatile, practical and multifunctional tool as a chainsaw. This device is deeply rooted in everyday life, and this is not surprising because the chainsaw has become for us simply an indispensable assistant in the field of cutting wood of various nature, preparing firewood for the winter, sawing trees, and it is also used in the construction industry, etc. Naturally about its positive sides can talk endlessly and she copes with her task just fine. But, like any technique, no matter how unique and highly practical, it breaks down over time and stops starting, and this is normal. The most important thing at this moment is to correctly determine the cause of the malfunction and quickly eliminate it.

Since there are such minor breakdowns that can be eliminated within five minutes. It is about them and how to eliminate them that we will talk about in this article.

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Plant device

The first and almost basic element of the chainsaw is the engine, namely the carburetor two-stroke (see carburetor adjustment). Its immediate power is varied, it all depends on the model of the device and its direct purpose. For example, the power of the Ural chainsaw is 3.68 kW.

The second equally important part of the tool is a headset (saw) which consists of a chain (cutting), a tire, a sprocket, a wheel (chain). It should be added to this that completely different manufacturers provide their own specific range of this headset.

It is important that it always needs to be matched directly to the specific characteristic data of the engine. Since the larger the pitch of this kind of headset, the deeper the cut of the chainsaw will be, one might even say that the more powerful and productive it will be. But do not forget that for the full operation of the device, the engine must also not be inferior to it in power.

It is lubricated by means of a special oil directly from the second tank, which is located on the hand unit. It should be noted that the mass of this kind of tank has such features that oil and fuel, which is intended for the engine to end at the same time.

We figured out the general outlines of the device, and most likely with its basis, and now it’s time to start figuring out why the chainsaw stopped working, what causes it might be and how to fix them.

The reasons why the chainsaw starts and stalls

A chainsaw has long been not a luxury, but a necessary tool for those who have a summer cottage or home ownership. But, like any other technique, this tool tends to fail, despite the simple device.

The classification of the main faults includes:

  • Complete absence of engine plant
  • The engine starts and stalls
  • Unstable tool performance
  • Work stop under load
  • Loss of power.

If the chainsaw does not start at all, the reason may be:

  1. Manufacturing defect
  2. Lack of fuel
  3. Problems with starting the ignition system
  4. No spark from spark plugs
  5. Poor fuel mixture
  6. Carburetor clogged
  7. High voltage wire problems
  8. Lack of compression.

Why does the chainsaw start and stall, what to do in this case? The reasons for this need to be examined in detail.

Why the chainsaw does not start well and stalls

In case of poor start-up of the equipment “to cold”, the problem may be the lack of compression, i.E. Rings are worn out due to a long service life, they need to be replaced. Sometimes the reason that the engine does not start well in an unheated state is a problem with the muffler, as well as poor contact between the plug and the wire.

Also, the reasons for a poor start can be wear or damage to the gasket, rubber cuff in the accelerator pump of the carburetor, which causes an additional flow of air, leading to an increase in saw speed.

The chainsaw starts and stalls: the reason

The reason that the chainsaw can stall right after the factory lies in the malfunction of a certain part of the equipment.

  1. The most commonplace reason why the chainsaw started up and stalled could be the low fuel level in the tank. This can be confirmed by stopping the operation of the tool when tilting, when fuel residues accumulate in a certain place in the fuel tank. With low-quality fuel, there may also be a problem with the operation of the chainsaw, in which case it is necessary to completely replace it.
  2. Clogged breather, which significantly reduces fuel consumption to the engine.
  3. Insufficient contact of the wire cap with the plug, which leads to strong heating of the plug insulator. Contact degradation can occur due to mechanical shear or carbon deposits.
  4. Broken spark plugs.
  5. Clogged muffler, which impairs exhaust gas output, causing the engine to stop running. For this reason, the chainsaw can start and stall at idle speed. Sediment in the muffler can also appear due to poor-quality fuel or improper use of the tool.
  6. Poor carburetor adjustment.
  7. Breakage of the piston group
  8. Fuel filter or pump problems. In this case, gasoline may flow through the pump or poorly flow through the fuel filter to the carburetor. As a result, the chainsaw starts up and stalls when the speed increases.
  9. Dirty air filter. Problems with this piece of equipment lead to the fact that, with increased loads on the engine, it simply cannot cope with them due to blockage and stops. A similar result is also obtained with increasing revs.
  10. Chain shortage due to lack or insufficient lubrication, or a problem with the chain brake.
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The operation of the equipment must be correct, with periodic inspection of the constituent elements to prevent damage. To troubleshoot, it is necessary to check all components of the equipment for their functioning.

If the chainsaw starts and stalls, the cause can be eliminated on your own. If it is a shortage or improperly prepared fuel mixture, it must be corrected. For preventive maintenance, when the chainsaw is idle, you should always drain the remaining fuel.

Spark plugs should be checked periodically. In this case, remove carbon deposits that clog the joint gap, and also check the tips for the presence of fuel. Another cause of spark plug problems can be gasoline getting wet. To do this, they need to be removed, wiped off with a rag and left to dry. Defective spark plugs are replaced.

If there is no spark between the spark plug and the high voltage wire, but if they are well connected, the ignition unit must be replaced.

A clogged muffler is a common cause of breakdown, in which a chainsaw starts up and immediately stalls. To eliminate the malfunction, you need to dismantle the muffler, clean it from carbon deposits using sandpaper or a special chemical solution. If the model of the chainsaw is non-separable, chemicals are poured into the system and are there for several hours, then it is blown out.

The carburetor must be adjusted if the chainsaw stalls at idle speed. Fine tuning is a rather laborious process, so it is usually done in service centers. But, on some models there are elements for setting it up, just turn the bolt half a turn to increase the speed of the chainsaw, the problems will be eliminated. If the jets, nozzles, channels and filters are clogged, the entire carburetor must be disassembled and cleaned. When oil seals, gaskets, cuffs are worn out, it is necessary to replace them, preventing air leakage.

If there is a problem with the fuel or air filter, it is necessary to replace the fuel pump or clean the air filter.

If the breather is clogged, clean it with a regular needle.

When the chainsaw starts up and immediately stalls, the reason may lie in the malfunctioning of the chain. To troubleshoot problems, check the presence of oil in the chain lubrication container, as well as the oil return tube for breaks or blockages.

When inspecting the piston group, you should pay attention to the cylinder, if necessary replace it or the piston. The cylinder can be bored to fit the new piston. If the piston with the cylinder is normal, you should pay attention to the defects of the piston rings and the need to replace them.

Among other things, you should control the service life of the parts specified in the product passport, which include the drive sprocket, tire, chain, part of the anti-vibration system, and replace them in time.

If the tool is idle for a long time, it is worth checking the condition of the fuel line. If the tube is cracked, you will have to replace it with a new one.