How to Clean a Breather In a Chainsaw
A chainsaw is a device that is useful for every host. No matter what model you have a chainsaw, sooner or later you have to thoroughly study it in order to diagnose problems, repair the device yourself. Why is this necessary?
Of course, such a working tool is not safe from breakdowns, but some are not so serious that you contact a service center (where you have to leave a tidy sum). Sometimes a chainsaw can fail due to the banal clogging of the breather. Not sure where the breather on the chainsaw is? You will learn about this and much more from this article.
What is a breather?
This is a part that looks like a standard valve. It plays an important role. it normalizes the pressure in the tank of the chainsaw. Why is it important to normalize blood pressure? In order to answer this question, it is necessary to consider the process of vacuum formation in the tank. This happens when fuel is supplied during the hermetic closure of the gas tank (the pressure on the walls rises). Breather equalizes pressure (relative to atmospheric). Without this small valve, the importance of which many underestimate, proper operation of the chainsaw is impossible.
Husqvarna chainsaw owners can also read the manual. how to clean the carburetor correctly?
Where it is located?
Husqvarna chainsaw breather, as in models of different manufacturers, is in the tank. Sometimes it becomes clogged, which leads to problems with starting the tool or the chainsaw works intermittently or does not start.
How to fix the problem? Here are a few options:
- use compressor to clean;
- clean the small opening of the breather with a needle.
In both cases, you have to get to this detail. Given the structural features of chainsaws, in order to clean the breather, you will have to remove the handle of the device.
How to get to the breather?
You do not need special skill. The easiest way is to refer to the instruction manual of your model. Nevertheless, instructions for dismantling the handle can also come to the rescue.
To get started, pay attention to the preparatory phase.
- To carry out cleaning after dismantling the saw handle was easier, remove the bar and chain, side cover. This is optional, but desirable, because at the same time you can, using a brush and compressor, remove traces of oil, dirt, sawdust.
- Set the dismantled parts aside.
After cleansing, proceed to the removal of the handle.
- The handle is attached to the body with three shock absorbers (all rubberized), but they cannot be removed right away, so for starters we work with plugs made of plastic. Usually they are located in the inner cavity of each shock absorber.
- Take a powerful screwdriver and start squeezing the shock absorbers. Start with the one closest to the handle at the back.
- We remove two screws that will allow us to dismantle the wire rod (it is connected with the carburetor and the gas trigger, it is close to the handle where you removed the first shock absorber).
- At the end, you have a handle that is connected to the shock absorber. Now it remains to unscrew the case (break the inner part of the handle to the side).
- Remove the case from the gum. All is ready!
Video: How to Clean a Breather In a Chainsaw
If you previously dismantled the chainsaw, handle the dismantling of the handle quickly.
Usually after this step the disassembly of the starter follows. But, given the standard structural features of the chainsaw, this step is not necessary for us to get to the breather. Optionally, you can remove the starter, as many sawdust accumulate under it.
Breather Cleaning Procedure
A simple cleaning method is to use a sewing needle. Before cleaning the valve, make sure that it is clogged. This is not difficult to do.
- Remove the carburetor (it must be disconnected from the fuel hose), estimate the number of traces of fuel.
- If the fuel escapes and the breather remains clean, then everything is okay with it and you need to continue the diagnosis. If a weak stream of fuel flows out of the gas line, you can be sure that the breather needs to be thoroughly cleaned.
Important! If after cleaning the chainsaw shows an increase in speed when idling, do not rush to panic and disassemble the tool or take it to the workshop. After cleaning, this behavior of the engine and carburetor (their interaction leads to an increase in idle speed) is considered the norm. If this feature is alarming, you can slightly adjust the idle screw located on the carburetor and marked T.
Is Sapun the culprit of problems with the chainsaw?
At the first sign of a broken chainsaw, do not rush to sin on the breather. Many do not want to immediately begin to disassemble the handle, if they are not completely sure that the culprit is the small valve. Before dismantling the chainsaw handle, exclude the probable causes of device malfunction so that the breather needs to be cleaned. Start small.
- Rate the quality of the fuel mixture. Not all manufacturers provide adjustable jets for chainsaw models. However, in some they can be configured. This gives the "masters" the opportunity to experiment with the composition of the fuel mixture. Perhaps you decided on such an experiment, but after a while you forgot about it, and now blame the tool’s gas tank breather for the tool malfunction. Remember that ideally you need to use the brand of oil recommended by the manufacturer (indicated in the instructions for the device), do not use the old mixture (you need to develop it in two weeks as much as possible). After a month, it will deteriorate and cause malfunctions in the operation of the device.
- Check the candle (perhaps at the time you start the tool you fill it). Inspect this part; it should be clean without a trace of oil. If there is plaque on it, then it should be light, brown indicates a problem with the ignition coil. Keep spare candles on hand to quickly remove this item from the saw problem list.
- Not only the breather can become clogged, but the carburetor jet and fuel filter (that is why after dismantling the handle must be removed and the carburetor to properly clean the surface under it from sawdust). With the cleansing of both nodes, you can handle it yourself.
- Clogged air filter. This filter can become clogged with dust, which will become the main obstacle when trying to start a chainsaw.
Consider the features of your tool model to be able to accurately diagnose the problem. This will help you not only to eliminate it and return to work with a chainsaw as soon as possible, but it will save you from unnecessary fuss (dismantling those nodes that are not connected with a device malfunction).
Typically, a breather is integrated in the unit’s fuel tank cap, so you can easily get to it, and then quickly and efficiently clean the valve.