Chainsaw chain oil flow adjustment
Chainsaw oil adjustment
Regardless of chainsaw type and frequency of its use, care of the saw and its parts is mandatory, because if not taken care of the tool condition, it will soon be in disrepair. Lubricating the chainsaw chain, sharpening the teeth, lubricating the saw, checking the nuts and plugs for tightening. these are the keys to long, reliable service.
During long-term chainsaw operation its chain can get blunt, and cutting will be considerably complicated. Therefore it is necessary to sharpen and lubricate the chainsaw chain from time to time. Lubrication of the chainsaw chain is done with a special oil (although auto is also used). After a serviceable version of the fuel system, it is essential that there is still a little oil in the chain. Separately want to say about Oregon chainsaw chains. these chains are very durable. These chains can last a long time if they have a function such as automatic lubrication. Exactly by this mistake Oregon chainsaws chains last a long time and work fine.
Every time you use your chain saw you should check the nuts and bolts before starting work. That there is that such a tool as a chain saw has a huge vibration, and because of this screws and nuts in it sometimes loose. For this reason it is very dangerous to use a chain saw in which parts are poorly fastened.
Checking chainsaw plugs for fouling (there is no such thing as fouling) should also be done, and for which the fouling detection design is designed, replace the plug with the newest.
Lubrication of saw chain and guide bar is a very important factor. Chain saws are equipped with a pump which feeds oil from the oil reservoir to the cutting system through holes. Then it is distributed by the saw chain itself. The lubricant is taken up by the shanks and distributed over the bar and the chain of the saw. For additional lubrication retention in chain saws special holes are drilled or channels are milled in the shanks. chain lubrication system on chainsaws often also includes connecting links in which additional holes are made for the lubricant. Quite a lot of grease reduces friction and heat, thus not only increasing the life of each element of the saw, but also reducing the stretching of the saw chain. Why is it in the interest of every chain saw owner to watch the chain lubrication process to avoid chain breakage and have to find a new chain on a chain saw?
The lubrication process is quite simple: while the chain is running, small drops of oil will form a trail of oil on any light-colored surface if the end of the bar touches it. If there is no trace, there is no oil and you need to check the oil, clean the bar groove, adjust the saw pump, etc.д.
One more thing: in modern saws it is allowed to install chains and bars of different length, but before you use the newest set, you should make sure that the oil pump installed in the saw can cope with its handling.
During long-term chainsaw use some of its elements and units become unserviceable. One of the more vulnerable components is the oil pump. On the basis of these grounds, many saw owners have a question about how to repair the oil supply to the chainsaw.
The oil pump’s job is to keep the chain lubricated, to keep it moving smoothly around the guide bar. When the oil pump burns out, the chain lubrication becomes worse, which minimizes the chainsaw’s efficiency. Sometimes this causes the chain to break. In order to prevent such nuisance, it is essential to have the oil flow repaired in good time. How to do it?
Oil pumps are of course made of metal and plastic. They are also divided into two types, which differ in their own design:
The pump is driven by the movement of the drive sprocket. While the chain is moving, oil is pumped into a special channel on the guide bar. At idle speed (when the drive sprocket does not turn) the pump does not deliver oil. this is made to save.
The speed and amount of lubricant applied to the chain is directly related to the number of sprocket revolutions. Some chainsaw models have a manual adjustment system using a special screw placed on the body of the device. On the expensive saw models the oil flow is regulated by an automatic.
How the chainsaw oil pump works:
To get to it you need to remove the clutch (you can see the whole process in detail on the video. Thanks to the author of the video. Eugene Kravchenko for the detailed story!).
This is what the oil pump looks like after the clutch is removed:
In the picture you can clearly see the plunger, which has a groove on the tail. This groove is used to catch the required amount of oil and deliver it through a hose to the saw bar and further to the chain. Plunger rotation is caused by the clutch drum sprocket. accordingly, we get the right amount of oil at any engine speed, because engine speed and ram speed are mutually dependent.
Many chain saws have a variable oil delivery. Adjustment is done by turning the screw, which reduces or increases the amount of oil captured by the plunger. The screw is located underneath the pump. (see STIHL chain saw 180 for details).photo).
Let’s talk about the oil flow directly to the chain
Mainly want to put Accent on the fact that remains to do our client chain saw manufacturer STIHL have a fairly small size but, nevertheless, they are very massive. These features attract future buyers of this kind of equipment to the models of this company. In addition, you can easily and simply create a variety of manipulations with this device on the work with wood (see photo). how to cut a tree).
Adjusting the oil flow of a STIHL 180 chain saw.
STIHL chain saws also have a high cutting ability. over, this technique is equipped with the latest accessories (see photo).Attachment for chain saw angle grinder) additional, thanks to which contribute to the convenience and ease of work. But actually let’s talk directly about the device, which the manufacturer has equipped its chainsaws. The STIHL chain saw direct chain lubrication system thus consists of:
It is worth noting that the direct oil supply through the work of the pump has a special regulation. It is also an important fact that the chain is lubricated throughout the chain saw’s operation. It is for this reason that this part serves its owner for quite a long time.
Undoubtedly, the chain must be systematically lubricated during work, so the oil for its direct lubrication must flow to its surface continuously. Since this is the whole direct design of the tool.
During operation, oil starts to flow directly out of the bar groove and is immediately absorbed by the sawdust.
That’s why the chain lubrication itself is automatic. But it is worth noting that there are some models that have a so-called oil metering, which should be fed directly to the chain. And of course models, which price range is quite low, have only a manual pump working directly through the action of the drive, which is located on the handle.
One of the most vulnerable components is the oil pump. This raises the question for many chainsaw owners as to how to repair the oil flow on a chainsaw.
The oil pump’s job is to keep the chain lubricated so it runs smoothly on the guide bar. When the oil pump fails, chain lubrication is impaired, which reduces the chainsaw’s efficiency. In some cases this leads to chain breakage. To prevent negative moments, it is necessary to timely engage in repairing the oil supply. How to do it?
Failures and repair possibilities
Considering the types of faults in the lubrication system, you can distinguish two categories of them:
- Common breakdowns found in all types of power units;
- Individual, which depend on the type of pump, on the features of the worm type transmission, on the design and other features of a particular chainsaw.
Important! If the lubrication system is malfunctioning, you should not use your saw. So you will ruin not only the chain, but also the guide bar, as well as the main sprocket, which leads to the need for a large investment in the repair of the device.
“Symptoms” of a faulty lubrication system:
- the chainring is dry, pale, and shiny;
- The chain stretches quickly after installation;
- the guide bar gets hot and the paint melts
- the oil remains in the same volume in the reservoir, regardless of intensive use of the tool;
- the cutting performance of the chain is severely reduced.
These all indicate a faulty or malfunctioning lubrication system.
If the consumable comes, then the cause of the problematic work of the lubricating unit, most likely, lies in a clogged filter, which can be cleaned or replaced with a new. If possible after this manipulation, the flow of the consumable is adjusted.
If the consumables are not coming in, then you need to do more diagnostics, because it seems that the problem is more serious.
Please note that it is not always necessary to dismantle the bar to check the operation of the lubrication system. Alternatively, the end of the guide bar is moved sideways (using a block) from the direction of cut, keeping the guide bar (its end) about 10 centimeters from the block while maximizing the RPM. When oil is coming in you will see the corresponding spots.
Possible malfunctions of the Husqvarna 137 chainsaw
Sometimes a person may encounter some malfunctions of the Husqvarna 137 chain saw, which can be repaired. Today there are a large number of workshops where specialists are engaged in the repair and maintenance of machinery. But you will have to pay a lot of money for this work.
Repair the Husqvarna 137 saw with your own hands without calling in specialists. When the breakage is minor, there is no point in going to a workshop and wasting your time. There is a list of the most common problems that the owner of such equipment may encounter. That’s why it is advisable to familiarize yourself with them, so you’ll always be fully armed.
How to disassemble, repair and assemble a STIHL chainsaw
To repair the device, it must first be disassembled. Side cover, chainsaw chain and guide bar must be removed. Then clean the tool, blow with a compressor and clean all the nodes with a brush. Then remove the crank. To do this, remove the plugs from the shock absorbers with a screwdriver. After that they remove the shock absorbers and the handle.
Sthil chainsaw bar oil adjustment. ms661c
Then remove the starter. Remove the housing cover and unscrew the starter screws. Remove the part. Then the handwheel is removed by unscrewing the nut that holds it. Twist it to the left. Pull out the handwheel. Then dismantle the clutch, oil pump drive and carburetor.
After that remove and dismantle the motor. It is secured by 4 screws on the bottom of the saw. Unscrew them and remove the motor. Then the engine itself is disassembled. Loosen the screws on the crankcase and remove it. Then remove the crankshaft, oil seals, bearings and piston rings. After completing disassembly make repairs and troubleshooting.
After the repair the tool will need to be assembled back. To do this, place the piston on the connecting rod. The arrow on it should look in the direction of the chain, and on the left side of the piston will be the side of the crankshaft where you want to mount the flywheel. Put the piston in the cylinder. Insert bearings, oil seals and circlip into cylinder. After that degrease the place of fixing the crankcase and put it in its place. To reassemble, follow the reverse sequence of disassembly.
How to remove the clutch
Remove the drive sprocket before unscrewing the clutch. Remove the corkscrew washer and remove the sprocket and needle bearing. Unscrew the clutch. Remove deflector plate and pump.
How to Remove and Replace a Sprocket
You need to replace the sprocket on a chainsaw when:
To replace the chainwheel, the chainwheel must be removed. The sprocket teeth should not deflect from the proper dimensions, or the chain saw will vibrate, causing crankshaft and bearings failure. Sprocket life is twice as long as the chain life. Use 2-3 chains until their cutting surface is worn out. After that, replace the sprocket. It is located behind the clutch clutch. The clutch cover is removed.
Remove the bar, chain and clutch. But first fix the crankshaft. Then the chain puller is inserted into the hole in the clutch and turned clockwise. Remove clutch. There is a sprocket behind it. Now disassemble it. If it malfunctions it is replaced.
See ” Top 2 reliable German STIHL chain saws: MS-261 and MS-361
050 Increase the chain oil flow on Stihl’s professional chainsaws
Repair and replacement of oil pump
Consider how to change the oil pump. If the element is leaking, the gasket between the two parts must be renewed. If this part of the oil pump is undamaged, wipe it down and put it back in place. Now check the hose. There should not be any cracks on it. Replace the hose if it is damaged. Then use compressor to clean outlets.
How to increase flow on chainsaw oiler
Replace the piston
Consider how to diagnose and replace the piston group. It is necessary to check the condition of the cylinder and the degree of wear of the piston. After dismantling the engine, unscrew the drip tray and remove the crankshaft with the piston from the cylinder. Unscrew piston pin retainers. If piston is defective, it must be replaced. Retain the wear band with the cut downward facing. Before installing the piston group in the cylinder, lubricate the piston with oil. Before installing the crankcase, degrease its surface and apply sealant.
How to set the ignition
I need to adjust the ignition on my chainsaw. Adjustment of ignition is carried out as follows:
Adjusting the carburetor and cleaning the muffler
To avoid operational problems, you should first adjust the carburettor correctly. Different modes of operation involve the use of a specific mixture of fuel. Here ” Ural”
, You have to look up the settings in the instruction manual. Your task is to find the factory settings in the chain saw’s data sheet.
So, the tool should work for a few hours without changing the settings. Then the saw is started and operated at minimum rpm. Then, using a screwdriver and the adjusting screw, you must set the desired position. The engine should gradually gain speed, taking into account that the chain on the bar remains stationary.
It is desirable to adjust so that on a sharp push of the throttle revs rise quickly, but not jerk, and smoothly. The principle is simple. unscrewing the screw makes the mixture richer, tightening the screw makes it leaner. This allows you to fine tune the carburettor’s performance.
If the excess fuel has been removed and the malfunction is not corrected, the carburetor may not be adjusted.
To correct this, carry out in strict order the following steps:
- Turn the fuel screw as far as it will go;
- Unscrew it three turns. Neither more nor less;
- Tighten the air screw firmly;
- unscrew it already two serious turns;
- Seal with sealant or wrap the adapter sleeve with a narrow tin.
Everything that has to be tightly and hermetically connected. The quality of the chainsaw depends on it.
There are cases where the chainsaw motor only runs at low rpm and shuts down at high load. A similar misfire can indicate a clogged muffler.
A muffler spark arrestor can get clogged for several reasons:
In any of these cases, it is necessary to remove the muffler and clean it perfectly with various detergents. After that, use a hair dryer to dry it out.
Read here. how to choose a right chainsaw.
Husqvarna 142 in operation
Fuel mixture was prepared by us on the base of gasoline AI 92 and branded Husqvarna HP two-stroke oil in the proportion 50 to 1. It is interesting to note here that if you do not have oil added at hand in the above ratio, the manufacturer allows the short-term use of quality oil, diluted with gasoline at a ratio of 33 to 1.
Husqvarna 137: The chain saw’s simple design consists of a two-stroke motor, air cleaner, clutch, fuel tank, oil tank, and guide bar with cutting chain. Both the chain and the tire are interchangeable equipment, which is perfectly replaceable with analogues after final wear (parts in 15″ and 13″ lengths are acceptable).