Replacing The Oil Pump Of The Stihl 180 Chainsaw

Comments 40

Yesterday, for some reason, the crankshaft bearings jammed when starting up. Disassembled the dirt there and washed all the cases oiled. Everything began to spin. Assembled in reverse order. Saw Does not start a spark, there is a benz. There is a current equal to NO. Collected on a transparent silicone sealant. Collected and after a while began to try to start. Is silent. And under the candle it poured too zero. Maybe it won’t start because of bad germtization? Dusty new was working 5 times in total.

Dirt in the bearing means dirt in the gasoline! I do not even know, try another sealant. But this is probably not the reason!

In the first part in the photo you can see a bottle with 80% oil that they are burned because of this and are badass

How did you determine that it was burnt?

Color capacity print quality. Well fired right away.

Well you are an “expert”!
1) In the photo, the label is not really visible, but you saw the UAH print and identified the fake, or rather DIRECTLY saw)
2) The color of the bottle can be distorted by the camera in any way, depending on the white balance settings and the sensitivity of the camera itself.
3) The oil is not bought in the market, but in the OFFICIAL DEALER of Stihl together with the saw!

Here even chainsaws will be repaired))). And they say the site is automobile. I also have Stihl, 290 MS, and the analysis of the current oil hose changed

Good chainsaw. It has been working for me since 2008 and have no problems. I saw about 12 cubes a year for heating the house.

As it looks more or less, she’s just a mini-bikini #128521;

I described everything perfectly, read both parts! Such a Stihl himself went through, only a piston assembly stuck in a Chinese one, it has been working for the second year, exactly h, since he works on cutting firewood for barbecue in a cafe, the flight is normal, so sometimes Chinese spare parts come across good quality #128578;

Perhaps China is good too. They did not risk it)

I described everything perfectly, read both parts! Such a Stihl himself went through, only a piston assembly stuck in a Chinese one, it has been working for the second year, exactly h, since he works on cutting firewood for barbecue in a cafe, the flight is normal, so sometimes Chinese spare parts come across good quality #128578;

Hello! Can you specify which ones? Also need.

I bought it from my neighbors with a broken piston. I want to restore. He says the wedge was given to Stihl. As I understand it, because of his stupidity, he wanted to push the piston through the candle hole. But not destiny. Seizure on the piston.

I don’t remember the name of prshneva, it was a long time ago, I took it from us on the market, chose the most qualitatively made one, saw to saw to this day

What needs to be changed besides the piston group?

And the piston that I took had bearings and oil seals in the kit, they did not change the pads, the relatives were Long for all the living, replaced the prshnyu and oil seals in the end, the knee was also alive, for the money it turned out that something about 800r in a circle, including a sealant, I advise before disassemble the subject by purchasing, and write a list of what needs to be replaced))

Replacing The Oil Pump Of The Stihl 180 Chainsaw

I agree. Thanks. Just another question. How to remove the cooling drum and clutch mechanism? There crankshaft threads on both sides are right?

And the piston that I took had bearings and oil seals in the kit, they did not change the pads, the relatives were Long for all the living, replaced the prshnyu and oil seals in the end, the knee was also alive, for the money it turned out that something about 800r in a circle, including a sealant, I advise before disassemble the subject by purchasing, and write a list of what needs to be replaced))

1 for “disassemble and burn” Burn, fuck! Write down, not remember)))

DO NOT tell me where the idle speed adjustment is. The saw Does not start, it starts only when I hold the gas, I release the gas stalls.

The idle speed adjustment is located on the right side of the saw (position how to cut) There is a round hole in the handle (top). Using the screwdriver from the kit, try to turn it clockwise. Another point, let’s disassemble the carburetor, clean it, I had the same problem. Pay attention to the felt filter. Good luck.

Thanks for your reply., At the weekend I will try to clean and adjust.

How to remove the cooling drum and clutch mechanism? There the crankshaft threads on both sides are right?

The piston does not bring to TDC by about a third, in the hole of the candle We fill a cord like a starter (we leave the tail out) and presses the piston at TDC. And gently turn away.

Left-hand thread! Thanks for the advice!

Good report!, very competently done! If you allow a couple of comments, firstly, you don’t need to smear the hose with a sealant, you need to blow it out and wipe it, I don’t know who said that this is a sore spot 180 calm (the sore spot is a compensator for the gas tank and oil tanks, the pipette is so green) and with such scuffs, you need to carefully watch the thickness piston skirts, if, after grinding with sandpaper, it is thin, then it does not go there for a long time on the edge with a large production, a small mark appears on it and look at the thickness) and most importantly, a THERMAL seizure appears ONLY FROM A LOW-QUALITY GASOLINE AND NOT FROM UNHEATING! THESE saws DO NOT HEAT THEY ARE SO DESIGNED THAT IT IS POSSIBLE TO WORK IMMEDIATELY, but after repairing the engine, they need to run-in, that is, work in normal mode, but for a short time, she does not immediately need Kamaz to get dusty firewood))))

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I repaired the same one with thermal seizure from overheating by a curved user, as it turned out full throttle at a high load. min revolutions and min airflow, Bosch replaced the rings, re-adjusting the grooves for them on the piston, and 1mm teflon foil seizure at the very bottom of the cylinder was cut.

It should only work at full throttle! And the whole trouble with scuffing is when the old mixture is either slightly diluted with fresh or NOT at all diluted and loaded as much as possible, then the effect of working on pure gasoline is obtained from this aluminum piston and the scuffing begins

I agree, but he did not allow her to unwind, especially in the heat, he might not say anything in the mixture, as usual in the service: what did they do with the product. nothing, you can figure it out, and there is a kick.

I completely agree constantly with such situations))) they did everything according to the instructions))))

Good report !, very competently done! If you allow a couple of comments, firstly, you don’t need to smear the hose with a sealant, you need to blow it out and wipe it, I don’t know who said that this is a sore spot 180 calm (the sore spot is a compensator for the gas tank and oil tanks, the pipette is so green) and with such scuffs, you need to carefully watch the thickness piston skirts, if, after grinding with sandpaper, it is thin, then it does not go there for a long time on the edge with a large production, a small mark appears on it and look at the thickness) and most importantly, a THERMAL seizure appears ONLY FROM A LOW-QUALITY GASOLINE AND NOT FROM UNHEATING! THESE saws DO NOT WARM UP THEY ARE SO DESIGNED THAT IT IS POSSIBLE TO WORK IMMEDIATELY, but after repairing the engine, they need to run in a break-in mode, that is, they need to work in normal mode but for a short time, she does not need KAMAZ to get dusty firewood right away))))

I agree. I carried out the running-in on small jobs (branch boards). Didn’t load much. Regarding warming up, the question is still controversial. Any engine requires warming up, at least 30-60 seconds. On my Echo trimmer with a 2-stroke engine, the instructions are directly prescribed to warm up a little before work.

Replacing the cord

Remove the side cover. Inspect the inside of the protective casing. If there is no damage, check the launch unit. Unscrew the starter bolt and remove the spring. Diagnose a pulley with a cord. If the rope is intact, then check each Delalle of the launch mechanism:

The cord is made of synthetic material and will gradually wear out. If it is damaged, cracked or torn, then it must be replaced.

How to disassemble, repair and assemble a Stihl chainsaw

To repair the device, you must first disassemble it. You need to remove the side cover, saw chain and bar. Then he will clean the tool, blow it out with a compressor and clean all the components with a brush. Then remove the handle. To do this, remove the plugs from the shock absorbers with a screwdriver. After that, remove the shock absorbers and the handle.

Then the starter is removed. Remove the housing cover and unscrew the starter screws. Remove the item. Then they remove the flywheel by unscrewing the nut that holds it, unscrew the flywheel nut. Twisting to the left. Remove the flywheel. Then dismantle the clutch, oil pump drive and carburetor.

After that, the motor is removed and disassembled. It is held in place by 4 screws on the bottom of the saw. You need to unscrew them and remove the motor. Then the engine itself is disassembled. Unscrew the crankcase screws, remove it. Then dismantle the crankshaft, oil seals, bearings and piston rings. At the end of disassembly, repair and troubleshooting are performed.

After repair, the tool will need to be reassembled. For this, the piston is installed on the connecting rod. The arrow on it should look along the chain, and to the left of the piston there will be the side of the crankshaft in which you want to mount the flywheel. They put the piston in the cylinder. Install the bearings, seals and circlip into the cylinder. After that, degrease the place of fixing the crankcase and install it in its place. When assembling, follow the reverse sequence of dismantling.

The main malfunctions of Stihl chainsaws and DIY repair instructions

The Stihl chainsaw is a tool designed for harvesting wood, processing plants, creating landscaping and other household needs. In case of breakdown of any parts or failure of the device, you will need to repair the Stihl chainsaw.

Repair and replacement of the oil pump

Consider how to change the oil pump. If the element leaks, then the gasket between the two parts should be renewed. If this part of the oil pump is NOT damaged, then it must be wiped and put in place. Now they check the hose. There should be no cracks on it. If the hose is damaged, replace it. Then the outlet channels are cleaned with a compressor.

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How to set the ignition

It is necessary to set the ignition on the chainsaw. The ignition is adjusted as follows:

  • Unscrew the candle and evaluate its appearance;
  • Specify the distance between the magnets and the coil (up to 0.2 mm);
  • Check Spark.

DOES NOT start

If the chainsaw does not start, then the prerequisite may be a breakdown of the ignition and engine start unit. If, when measuring the gap between the module and the flywheel, no deviations are found, then the spark plug should be checked. It is pulled out of the shaft and the gap is measured. If fuel enters the combustion chamber, and there are breakdowns in the ignition system, then the carburetor is faulty.

How to remove the clutch

Before unscrewing the clutch, you must remove the drive sprocket. Remove the corkscrew washer and remove the sprocket and needle bearing. Unscrew the clutch. Remove the baffle plate and pump.

Carburetor STIHL MS-180

The STIHL MS-180 carburetor is equipped with one idle adjustment screw. Full load jet is NOT adjustable, i.E. Cannot be changed.

You need to know the basic rules for adjusting the idle speed:

1) check the air filter, if necessary, change it;

2) check the spark arresting grille, if necessary, change or clean it. Then you can turn on the engine and then warm it up.

Chainsaw oil pump device:

To get to it, you need to remove the clutch (the whole process can be seen in detail at. Thanks to the author. Evgeny Kravchenko for a detailed story!).

This is what the oil pump looks like after shooting the clutch:

The figure shows very clearly the plunger, which has a groove on the tail. This groove is needed to capture the required portion of the oil and feed it through the hose to the guide bar and further to the chain. Rotation of the plunger is given by the sprocket of the clutch drum. Accordingly, we get the required amount of oil at any engine speed, since engine speed and plunger speed are interconnected.

Plunger Stihl MS 210,230,250

Many chainsaws have the ability to adjust the amount of oil supplied. Adjustment is carried out by turning the screw, which reduces or increases the amount of oil captured by the plunger. The screw is located underneath the pump. (See photo).

Variable oil pump

Educational program: chainsaw oil pump.

I am starting a section called “Educational program” in which I will talk in detail and units of chainsaws, their designs, reasons for failure and repair methods.

Opens this heading oil pump. The oil pump in the chainsaw is required to lubricate the saw chain during operation. In most cases, a plunger-type oil pump is installed. The oil pump is located under the clutch.

Chainsaw oil pump and lubrication system malfunctions:

  • The most common reason why chain oil stops flowing is a forgotten outlet. In this case, you just need to blow through the channels. Channels can also be clogged on the bus. Also easy to clean.
  • Oil leaks during standstill. There are several possible reasons: 1.Cracks in the oil pump housing. 2.Check the integrity of the hoses and their fit.
  • Insufficient chain lubrication. As already mentioned above, on some chainsaws, you can adjust the amount of oil supplied. If there is no such adjustment, then again there are several reasons. 1.Air leaks through cracks in the hoses, pump casing or hose attachment points. 2. On the drive of the oil pump, the coil is worn out. In that case, a replacement. This also applies to the plunger.
  • High oil consumption. This malfunction may arise due to: 1. Incorrectly installed tire 2. Failure of the oil pump. In fairness, it should be noted that many chainsaws have too much oil consumption for chain lubrication by nature. Its consumption can be reduced by using specialized oils for chain lubrication.

Diagnostics and repair of the oil pump and chainsaw chain lubrication system

The chain is NOT lubricated

We are repairing the chainsaw, you will notice that oil does NOT get on the chain. If the chain is not lubricated, then there are interruptions in the lubrication system. There are such malfunctions:

  • The chain is dry, light shade.
  • The chain stretches too quickly.
  • The tire is too hot and the paint has melted on it.
  • Oil does NOT drain in the tank.
  • With a sharp chain, the saw cut worse.

Such signs indicate that there has been a violation of the lubrication process. To check the oil supply to the lubrication unit, you need to remove the tire and turn on the chainsaw. Then increase the speed and observe the end point of the oil line. If the oil is flowing, then its volume is Not enough for proper lubrication. If there is no supply, you need to clean the filter. You should also adjust the oil flow. In the absence of faults, further diagnostics and do-it-yourself repairs are required. If it turns out that the substance is NOT supplied, then the oil system is repaired.

Consider the main malfunctions and methods for their elimination:

  • Broken oil hose. This can be seen on examination. In this case, the hose must be replaced.
  • If there is no thread on the shaft of the oil pump, then replace it.
  • If there are defects in the thread, then it must be replaced.
  • If there is no corkscrew of the main shaft, then a nail of the same diameter can be installed in its place.
  • The filter might be clogged. This happens a lot with the Stihl MS 180 saws. You can wash it off with gasoline. If this does NOT correct the problem, the filter should be replaced.
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In Stihl 180 chainsaws, there is often a depressurization of the oil line. This occurs where the oil line from the tank is inserted into the tool body. Breakage can be detected by oil leaking at the bottom of the saw.

To fix the problem, you need to remove the saw handle, pull out the hose. After that, you need to clean the hose. Then apply sealant to it and put it in the tool body.

The reason for the appearance of oil leaks on the bottom of the chainsaw

In the Stihl 180 chainsaw, there is a characteristic malfunction, which consists in insufficient sealing of the place where the oil hose is installed in the chainsaw body and the appearance of theca in this place. To eliminate it, it is enough to remove the Stihl MS 180 saw handle, disconnect the hose itself, rinse and degrease the seat in the body and the hose shank, then apply sealant and reinstall the hose. Such a simple operation will reliably eliminate the malfunction and the oil will stop leaking.

Everything in the Stihl 180 oil pump

As a mechanism for supplying oil for chain lubrication, a mechanical oil pump is used in the Stihl MC 180 Chainsaw. Remarkably, the Stihl 180 oil pump is completely made of metal parts and is practical and highly reliable. Let’s take a closer look at how the oil supply system of the Stihl 180 chainsaw is organized.

DOES NOT develop momentum

If the saw is Plasma Idle, the following may have happened:

  • Clogged filter;
  • Violation of the ignition system;
  • The carburetor has deteriorated;
  • Parts of the motor are deformed.

For self-repair, you need to follow these steps:

  • Flush or replace the fuel hose.
  • Clean the filter.
  • Check the quality of gasoline and oil.
  • Check the operation of the carburetor and spark plugs.

When the Stihl chainsaws are repaired, they will work correctly.

If the saw is NOT gaining momentum, then this could be caused by:

  • Faulty engine;
  • Cylinder wear;
  • Failure of piston rings;
  • Broken spark plug;
  • Coil malfunction;
  • Unbalance of carburetor screws.

If, after testing, defects are NOT found, then check the carburetor.

Actions in the event of a malfunction in various parts of the unit

Unpleasant phenomena such as loss of power, lack of connectivity, and no-load support are common. The reasons for this behavior of the tool are malfunctions of the chainsaw carburetor. This is reflected in the contamination of dust particles, sawdust. Such a breakdown can be eliminated without problems.

Carburetor cleaning is carried out using:

  • A small amount of gasoline;
  • Phillips screwdriver
  • Brushes;
  • Heads size 8.

To start repairing the carburetor, they begin by cleaning them from dirt and dusty particles, small wood. A brush is used for this. When the surface is completely free of debris residues, the repairer removes the cover, after which the filter.

Carburetor repair and adjustment

The carburetor is adjusted to warm up the engine. If the engine fails to tune, the carburetor stuck may be a prerequisite for excess gasoline in the mixture. To remove the part, it is necessary to unscrew the fastening nuts, disconnect the ignition and the rod from the engine control lever. Then the lever is removed. Then you can remove the filter and carburetor.

The muffler is secured with two nuts. You need to untwist them and pull the muffler towards you. Then the coil screws are unscrewed and dismantled. In Stihl saws, the carburetor has 1 idle adjustment screw. If the idle speed is violated, then the carburetor needs repair. This is a complex process and difficult to do on your own. Contact a repair shop.

STIHL MS 180 oil supply repair

The owners of this model of the tool should be prepared for the fact that they may face such an unpleasant moment as oil leakage for lubricating the chain. Oil can leak out while working with the tool and even when just lying down without action.

What is the reason for this phenomenon? The fact is that oil leaks due to leakage in the area where the hose from the oil tank and pump is connected.

In order to solve the STIHL MS 180 oil supply problem, it is advisable to disassemble the device.

Solution to the problem:

  • Check the hose, if it is damaged, then replace it with another one. Or try to degrease the hose and rinse, and put on a sealant, everything should work.
  • Check the filter oil for breakage, clean it (if you filled in the waste)
  • There may also be a clogged zapune, this creates a vacuum in the fuel tank and affects the fuel supply. The problem may be in the adjustment of the carburetor and there may be clogged channels, well, or the air filter, you need to thoroughly clean the filter and carburetor channels.

In general, the main problem is due to poor oil.

It is not recommended to pour oil into a chainsaw which is not intended!

The main malfunctions of the Stihl 180 chainsaw

Chainsaw “Stihl 180”, whose malfunctions and repairs you can identify and make yourself, must be operated according to the manufacturer’s instructions. The start button, for example, should only be activated after the technician has checked the chain tension and has also made sure that the respective tanks are filled with oil and fuel mixture. The chainsaw must be securely fixed in your hands, only after you can start work.