Chain lubrication system of a modern STIHL chainsaw
The chain lubrication system is essential for chain saws and is indispensable for chain lubrication. It’s no mystery that the chainsaw chain rubs against the guide bar during cutting, which heats it up and causes early wear. To alleviate friction, the chain chain needs to be lubricated all the time.
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Chainsaw chain lubrication system
To supply oil for chainsaw chain lubrication, the tool uses a special pump that doses, depending on the number of motor revolutions, the lubricant to the saw bar.
The system uses chain oil with strong adhesive properties to evenly distribute the oil around the bar and retain it even at high chain rotation speeds. Oil leaks, chainsaw output is in a place where there is a bolt tensioning the chain here from. Let’s take a closer look at the oil supply system implemented in modern chainsaws.
Why is chain saw oil leaking
Building and DIY in an easy to understand language
STIHL 180 STIHL chainsaw oil refill
The STIHL MS 180 chain saw is an indispensable tool for cutting wood and other construction site work. This is one of the most widely recognized garden devices that is armed with functionality.
Tool weighs about 4 kg. With a power output of 1.5 kW and a guide bar length of 35 cm.
Note that the semi-professional device for this saw model inherited electric ignition and a fairly sharp chain tension. saw chain out of the chainsaw. You understand why it leaks: Why oil leaks from underneath. The STIHL MS 180 has two tanks for petrol and one for oil.
One of the main features is the reduced vibration.
This is the result of the 4 shock absorbers. It’s no secret that high cushioning has a harmful effect on human health and has long been fought in Europe.
If you would like to point out that it would not be a good idea to disassemble this saw without help or instruction, in this case, it would be better to leave the saw to experienced STIHL service technicians.
STIHL MS 180 oil repair
Owners of this tool model should be prepared for the fact that they may encounter such a nasty moment as a leak of chain lubricating oil. That’s right it’s not the chain, it’s the liner. Oil leaks right from the start. I don’t know. Oil can leak during work with the equipment and even when just lying around without doing anything.
READ What kind of Petrol to fill your STIHL 180
What is the cause of this phenomenon? The problem is that the oil leaks because of tightness problems in the area where the hose from the oil tank and the pump is connected.
In order to solve STIHL MS 180 oil problem it is necessary to disassemble the machine.
- Check the hose if it is damaged, change it. Or try to degrease and wash the hose and put on a sealant, it should work.
- Check the oil filter for breakage, clean it (if you fill it with used oil)
- It can also be caused by a clogged hose, which creates a vacuum in the fuel tank and affects the fuel supply. The problem may be in the carburetor adjustment and may be clogged channels or air filter, you need to carefully clean the filter and carburetor channels.
Chinese chainsaw Tricks/Chinese chainsaw oil leaks HOW TO MAKE IT OK.Little tricks Chinese chainsaw
The video looks at disassembling and properly reassembling the oil pump and sealing the oil connection
If there is no oil in the chain of a chainsaw, it is because of this Why does the oil leak? If you don’t get oil for your chainsaw chain while it’s working, the oil is out of order Why oil. How to.
READ Not Lubricating On STIHL Chainsaw
How to fix chain saw oil leakage.
One of the few cases where spontaneous lubrication oil leakage is corrected
for the chainsaw chain of a chain saw. Repair.
In general, the main problem is due to bad oil.
It is not recommended to put oil in a chain saw that is not designed!
How to fill the oil for a STIHL 180 chain saw (STIHL 180)
- Spare no expense for the original oil. 2-stroke STIHL HP oil is a little more expensive, but the cleaning costs even more.
- In the fuel to fill a quality can be and Mobil 1, and for lubrication suit three-phase, in any case do not fill the waste.
- Inexpensive choices: mineral oil 15-40, 10-30 in winter. M8 for example or M10.
Be aware of your personal safety while working with a chainsaw.
Remember that the chainsaw is affected by the quality of the oil you use. The advantages of a Husqvarna 240 chainsaw, Why gasoline leaks from a Husqvarna 240 chainsaw? Low-quality oil can make the tool inefficient and have a negative impact on parts.
Check and clean the STIHL MS 180 oil pump periodically to ensure it runs smoothly. Oil leaks from the chainsaw. A quick overview of why oil is in the chain saw. That way, the oil supply process will be fine.
STIHL MS-180 carburetor
The STIHL MS 180 carburetor has only one idle speed adjustment screw. The full-load nozzle is not adjustable and cannot be changed.
READ What kind of bar to put on your chainsaw?
It is necessary to know the basic rules of setting the idle speed:
1) check the air filter, change it if necessary;
2) Check the spark guard and if need be replace or clean it. Then you can turn on the engine and then warm it up.
STIHL MS 180 carburetor repair
Repairing the STIHL MS 180 carburetor is a very difficult thing to do. Note that there is practically no risk of sudden changes in the cylinder piston group during repair.
If the chainsaw will not start, then apply the following steps:
1) open and close the gas tank cap;
2) It is a good idea to remove the spark plug and then drain it;
If it does not work, check the air filter, the gasoline supply and the spark plug activity.
This problem is related to the valve (trapdoor), which is clogged, and as a consequence, a vacuum is formed. All about chain saw repair with your own hands I’m not leaking oil from why in a chainsaw. To eliminate this inconvenience, it is necessary to clean the valve (blind rod) with a needle.
Check the filter systematically. if the muffler is clogged, it will not be able to deliver the power it was designed for.
If you have purchased a chain saw with a warranty (there is usually no other option), send it in for servicing immediately.
The STIHL MS 180 chain saw is very easy to operate, has good ergonomics and offers a number of tangible advantages.
Chain lubrication system for chainsaws
To supply oil for chainsaw chain lubrication, the tool uses a special pump, which doses, depending on the number of engine revolutions, the lubricant to the saw bar.
The system uses chain oil for chainsaw chain lubrication, which has increased adhesive properties, it is necessary for the oil to distribute evenly over the entire perimeter of the bar and retain it even at high chain rotation speed. Let’s take a closer look at the oil supply system implemented in modern chainsaws.
List of quality/price ratio oils
Lubricant for 2-stroke engines:
- Volume 100 ml. can be bought for 90 p., Add it to petrol at a ratio of 1 to 50 (20 grams of oil per liter of petrol). Specially developed for STIHL chain saws. The main ingredient is minerals. Also suitable for other models by other manufacturers.
- STIHL (1 litre capacity), intended for STIHL saws. Diluted 1:50. Mineral-based lubricant. Price in the range of 500 p.
- STIHL dispenser (1 litre). Diluted 1 to 50. Price around 600 r.
- STIHL H. P. Ultra (100 ml capacity), 1:50. Also for STIHL chain saws. It is a synthetic oil. It has a high degree of lubricating advantages. Also suitable for other makes of chain saws with 2-stroke engines. The cost of this lubricant varies in the range of 120 p.
- STIHL chain oil (5 litre capacity), petrol to lubricant ratio 1:50. Component. mineral additives. Created directly for STIHL chain saws with 2-cycle engines. Also suitable for. Price is 1500 p.
- STIHL H. P. Ultra with dispenser (1 l), diluted in the ratio of 1 to 50, made for STIHL chain saws. Can be used for other brands. Price 1100 p.
Chain oil for saws
- STIHL chain oil (volume 1 litre). This is a synthetic-based lubricant that helps prevent the chain from seizing up over time. Price 215 r.
- ForestPlus is a mineral oil, packed in different containers. It forms a film on the bar and chain that lasts even at high speeds. Price range starting at p293.
- BioPlus. vegetable-based, environmentally friendly lubricant. Packaged in several types of containers, the price depends on its type, and in each region is different, starting at 444 p.
- SynthPlus is a semi-synthetic oil, works even at minus 25 degrees, mixes well with BioPlus, making it easy to switch from one oil type to another. Packaged in similar containers to the previous one. Price from 369 p.
BioPlus is preferred for chain lubrication, t. к. other oils are designed for severe conditions or for winter work.
Oils for saw chain lubrication
- STIHL chain oil (volume 1 litre). It is a synthetic-based lubricant that helps to prevent the chain from seizing up completely over extended periods of use. Price r215.
- ForestPlus is a mineral oil, packed in different packaging. It creates a film on the bar and chain that lasts even at high speeds. Price category starts from 293 р.
- BioPlus is a vegetable-based lubricant that is environmentally friendly. Packaged in several types of packaging, the price depends on the type, and in each region varies, starting from 444 p.
- SynthPlus is a semi-synthetic oil, works even at minus 25 degrees and mixes well with BioPlus, so you can easily switch from one type of oil to another. Packed in a similar container as the previous one. Cost from 369 p.
It’s better to lubricate the chain with BioPlus oil. к. Other oils are designed for severe conditions or for winter operations.
Repair and adjust the carburetor
Adjustment of the carburetor is carried out on a warmed motor. If the engine can not be adjusted, then the cause of the excess gasoline in the mixture can be a hang-up of the carburetor. To remove the part, it is necessary to unscrew the fastening nuts, disconnect the ignition and the link from the motor control lever. Then remove the lever. Then you can remove the filter and carburetor.
The muffler is secured with two nuts. Unscrew them and pull the muffler towards you. Then unscrew the screws of the coil and remove it. STIHL saws have a carburetor with one adjustment screw. If the idle speed is disturbed, you need to repair the carburetor. This is a complicated process and difficult to do by yourself. Contact a repair shop.
How to shorten the chain with your own hands
It is possible to perform chain repair of a chainsaw with their own hands, provided you have a special tool (most often comes with the saw). Most often it is necessary to shorten it, especially if it is stretched. To do it is difficult, but possible. To repair it by shortening, you need to prepare the following tools:
Some work can also be done with a welder, if you have doubts about your own strength.
To shorten the chain on your chainsaw, you must undo the riveting. Since it is made of strong steel, the process can be difficult. It is joined on the inside of the rivet. Reduction is performed in the following sequence:
- Secure the part in a vise.
- Use a file or emery board to cut away the protruding portion.
- Whip out the rivets with a bead.
- Do the same work in one more place. This allows you to rivet it.
- Remove the links.
- Join on the old rivets, pressing them on the sides. A rivet can be welded to the sides of the link, and then any excess can be filed off.
How to shorten the chain with your own hands
It is possible to repair the chain of a chainsaw with your own hands, provided you have a special tool (often comes with the saw). Most often it is necessary to shorten it, especially if it is stretched. It’s hard to do, but it’s possible. To repair it by shortening it, you need to prepare the following tools:
Some work can also be done with a welder if you have doubts about your own strength.
To shorten the chain on a chainsaw, you have to rivet it. Since it is made of strong steel, the process can be difficult. It connects on the inside of the rivet. Reduction is performed in the following sequence:
- Clamp the piece in a vise.
- Use a file or emery board to file away the protruding portion.
- Hammer out the rivets with a drift.
- Do a similar job in another place. This will allow the rivets to be re riveted.
- Remove the links.
- Join on the old rivets, with them pressed on the sides. The rivet can be welded to the sides of the link, then any excess can be filed away.
Adjusting the chain oil in the chainsaw chain
The oil must have a suitable viscosity so that the existing lubrication system on the chainsaw will give it away. Mechanically speaking, the oil pump doesn’t care whether you use automobile, gear oil or specialty oil. The main thing is that the viscosity lies in the prescribed permissible range. But that doesn’t mean it can use any oil at all. The purpose of chain oil is not to save you money on buying it, but to lubricate the bar and chain parts. Different oils do this differently. But about that in another article “Chain oil. What to Pour?”.
Most of the modern chain saw oil pumps are designed the same way: in the shell (photo 1 pose 3) there is a tubular cylinder with two holes in its bottom.1) the cylinder is placed (photo 1 pos.2), into which the plunger is inserted (photo1 item “).3), that moves in a reciprocating motion.
Cylinder at the bottom has two holes (see photo 1 pos.4 only one of these can be seen): oil is sucked in through one of these and expelled through the other.
plunger is a steel rod that has a milled notch on one side and a plastic or steel gear on the other. As the plunger rotates, the flapper alternately opens and closes the cylinder’s inlet and outlet ports. In upward reciprocating motion, the flapper first opens the inlet port (while closing the outlet port) and creates a slight depressurization. This will draw oil into the cylinder. The plunger then pivots and moves downwards, opening the outlet hole with the flattened part (while closing the inlet hole) and squeezing the oil out of the cylinder. This way it is pumped to the tire in small portions. The high cycle frequency creates a constant and continuous flow of lubricant.
Two types of oil pumps are used: variable-flow and fixed-flow. In the first case, the plunger gears have an oblique tooth and the upward motion is provided by an additional spring. Flow control is achieved by varying the length of the ram stroke in the cylinder. Example: oil pump for a Chinese saw with an engine displacement of 45- 52cc.see
In the case of the fixed speed pump there is an oblique closed groove on the plunger in which the casing fixed stop rests. The rotation causes the groove to slide over the stop, and because it is oblique, this movement causes the plunger to walk forward backward. With this arrangement it is not possible to limit the stroke of the ram and oil is supplied in constant quantities. example. Husqvarna chain saw 137, 142 oil pump
The torque is transmitted from the motor to the plunger through a special actuator, which also has a pinion. the mating part of the pinion on the plunger. This is in fact a worm gear. The oil pump drive is set in motion either by the chain drive sprocket (photo 4 pos.1) or by the crankshaft itself (photo 4 pos.2).
In the first case, the plunger is mechanically connected to the drive sprocket and rotates in conjunction with it. Picture 4 pos.1 shows the drive on the STIHL MS-180 chain saw. The steel lug clings to a special recess on the cup of the drive sprocket. When the sprocket rotates, the actuator rotates with it. No oil supply at idle speed in this case.
In the second, the actuator is rigidly fixed to the shaft and rotates with it at all times. Picture 4 pos.2 shows the oil pump actuator on a Husqvarna 137, 142 chain saw. It is pressed onto the crankshaft shank and rotates with it at all times. That’s why the oil is always added, even if the saw is idling.
Usually one of the gears (either on the plunger or on the actuator) is made of plastic to protect a part with a more complicated design or complex assembly. The plastic part will be the first to break and wear out.
On some saws the oil pump can be additionally covered with a special cover (photo 5, oil pump cover on a 45-52 cc Chinese chain saw).see) that protects the worm connection and the pump itself from dirt and wood dust. On some saws, such as the Husqvarna 137, 142, the oil pump housing itself covers the actuator-plunger connection, thereby acting as a protective cover.
A certain amount of lubrication is needed for the bar and chain to work properly.
Choosing the right oil
Your first question after getting your STIHL chain saw is: What oil should I put in my STIHL chain saw?? If you take good care of the technique, designed for work in construction and gardening can greatly improve the level of activity of the device itself does not face a breakdown of various kinds.
The most important factors in maintaining the machine’s proper performance are the use of the proper lubricant and fuel. Although the main problems of the owners of the technique take place precisely with the choice of oil for their “pets. At this point you can learn how to select the lubricant specifically for STIHL chain saws.
A chainsaw is a hand-held tool designed for working with wood. It is equipped with a gasoline internal combustion engine. It is a complex constructional device. In the course of use, the factory settings are disturbed, so a procedure such as a chainsaw adjustment is required periodically.
Design of chainsaw
The chainsaw consists of several major independent assemblies.
- Internal combustion engine generates the mechanical energy that drives the chain saw.
- Gearbox transmits torque from motor to cutting tool. It is a set of gears and intermediate shafts.
- The clutch is the link between the gearbox and the chain. Used for intermittent breaking of the gearbox-chain chain. Makes the chainsaw immobile at idle speed. Interrupts or slackens the drive torque in abnormal situations (for example, braking the saw to a complete stop), allowing the engine to run and not stall.
- Automatic brake interrupts chain operation if the chain breaks off, comes off the treated wood, or if abnormal operating conditions arise.
- The chain saw guide bar.
- Chain tensioning mechanism.
- Chain lubricator and other parts.
How to tension the chain on a chainsaw correctly?
Well-known brands produce garden tools so that even an inexperienced beginner can install the chain on a chainsaw. For this purpose, practically each model has a side tensioner that allows both to put a chain on a chainsaw and to tighten an already installed headset. Thanks to this mechanism, the chain can be tensioned on a chainsaw by hand. In most cases, saw manufacturers provide free access to the tensioner, which greatly simplifies the replacement of the drive roller and other parts of the mechanism.
Installing the chain on a chainsaw should be done only when the motor and the bar of the garden tool are completely cooled. If this requirement is ignored, the cold saw element on the hot bar can deform. What’s more, this is quite often the case even in cases where a pobedite chain for a chainsaw is installed.
To properly put the chain on the chainsaw, it is necessary to observe the following order of actions:
- First, you need to check whether the lock for random activation of the garden tool is on. Also, the owner of the saw will need to turn on the inertia brake in advance;
- The next step is to remove the protective plastic cover located on the right side of the saw and remove the screws;
- Then it will be necessary to determine which side of the chain to put on the chainsaw. Manufacturers advise that the headset should be installed so that the cutter located at the top of the installed bar is directly facing the direction of rotation of the chain;
- After that, it is necessary to put on protective gloves made of thick material and begin to slowly rotate the headset on the bar;
- If the operator finds that the saw element being used is sagging, it will need to be tightened. To do this, turn the tensioner until the sawing part is tensioned;
- Then you need to loosen the screws that are designed to mount the factory bar as standard;
- Next you need to insert the bar and tighten the screws.
Finally you need to check again the tension of the saw element. The chain should not sag if correctly installed, but should not be stretched too much. It is best to let the part sag by about 0.5 cm when pressing it with the index finger of your hand.
Problems and solutions
Problems with the oil pump can be divided into two categories. The first is no oil flow and the second is leaking. Depending on the type of the problem and the main “symptom”, the correct procedure is different.
No oil flow
If there is no oil supply to the saw head and you do not notice any leakage, it can be assumed that the ram remains stationary. Why the ram stands in place? It may be worn or the screw to which it is connected is not properly installed. The latter may stand in an unnatural position for itself, which often happens due to improper assembly of this unit.
You have to look at the /-, the special marks. These marks can, of course, be lined up in the correct position, but the screw will not stand as it should (oppositely). How to fix such a problem? Just disassemble the pump and put the screw on properly. Sometimes it is enough to turn it to the “-” mark. The screw itself can not stand in place, so it blocks the plunger movement.
How do you know if the plunger is worn out?? Pay attention to its end, or rather to the edge of this end, which can be worn away. Then in this place you will not see the characteristic protruding part. This place with the whole edge will be about level. How to solve this problem? There are two options:
If you choose the second option, don’t forget to sharpen the shoulder in the center. Keep in mind that the pump will work after sharpening, but the oil flow is increased by shifting the plunger.
Sometimes there is another problem, when oil flows but the pump doesn’t work as it should. Then check the inlet and outlet hose. One of them might come loose. If it happens to the inlet hose, oil will leak. even when the saw is not running. If the output hose has been disconnected, oil will leak when the machine is running. This can be easily remedied by simply reconnecting the hoses.
Leaking
It would seem that we have looked at the cause of oil leakage. Yes, indeed, this sometimes happens because of disconnected hoses. But it has nothing to do with the pump. So now let’s look at the causes of leaks that are related to pump malfunctions.
Leakage can occur when the rubber seal is no longer hermetically sealing. The seal may be badly worn, or maybe it’s not installed as it should be.
Before you look for a new pump for your Partner chainsaw due to persistent leaks, remove the components and look at the collar, which may be installed with the collar turned toward the oil reservoir. If it’s standing like this, turn it about 180 degrees. If you see that the seal is worn, replace it with a new one. Of course, try to find the perfect cuff. If you can’t find one, buy a seal ring at a plumbing store.
If you still observe leaks afterwards, examine the walls of the pump cylinder, which may be worn out. In that case, it’s easier to buy a new pump.
Oil Pump Malfunctions
Regardless of the manufacturer, any chainsaw model has malfunctions in the lubrication system.
chainsaw oil pump assembly
The nature of faults in the lubrication system can be different, and therefore it is necessary to determine exactly the cause of oil leakage or lack of oil on the tire before beginning repairs. If you exclude the possibility of mechanical damage, you can identify the following lubrication system failures:
- The line connection to the chainsaw’s oil pump outlet is not tight;
- Loose fit of parts in the plunger system;
- Inconsistency of discharge chamber parameters and plunger dimensions;
- Oil line tightness with oil pump inlet fitting.
Keep in mind that if the plunger system is not tight and the lubrication tank is located above it, oil will leak quickly (2-3 days).
It is easy enough to stop a chainsaw oil leak if it has not been used for a long time. Several screwdrivers and wrenches are needed for this.