[SOLVED] Stihl 011 AV Chain Saw Recently Started Leaking Bar Oil Into The Carrying Case Over Time. Mechanic Said Air Pressure Changes Could Be Forcing ...

out. In approx 25 years it never leaked. An old Stihl general manual for dealerships I obtained when teaching small engine maintenance & repair indicated possibly plugged breather. Can’t find exploded diagram to locate breather before taking it apart.
Is it easily accessible without major dis-assembly?
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I worked at a tool rental store while attending college and rented this saw. These saws would leak oil on the shelf. This problem is related to oil pump diaphram /check ball / diaphram spring or gaskets. The following link is the manual for your saw. Read the section on “Cleaning the Oil Pump”. Most likely pulling the pump will reveal the problem. The mechanic would remove the diaphram and spray cleaner in tube. There is a check ball in the system that may not be visible and could have debris holding it open. Good luck with your repair

http://www.stihlusa.com/stihl_ownersmanuals/STIHL010_011_with_safety_manual.pdf

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STIHL chainsaws use a one-way valve oil tank breathing system. This system allows air into the tank whilst the chainsaw is in use, without leaking oil onto the operator. However, in some atmospheric conditions the oil may be forced out of the tank through the oil pump while the chainsaw is in storage.

In all but very exceptional cases there is nothing wrong with the chainsaw and what appears to be an oil leak is simply oil that has sprayed from the chain as it rotates at high speed, draining from the saw body and guide bar.

If your chainsaw is using too much bar oil, you may need to clean the bar and chain and rid it of built-up dirt and debris. You can do this by spraying a degreaser onto the bar and chain and letting it sit for a few minutes before wiping them clean with a rag.

Naturally, the chain of your chainsaw will need to be oiled well to function perfectly. To make sure that it functions well, grab some WD-40 Multi-Use-Product. WD-40 works great for both – rust prevention and lubrication.

Unopened container shelf life: 4 years in originally sealed containers. Container already opened shelf life: up to 4 years if stored in a firmly closed container, in a dark and dry location, at cool (up to 25°C/77°F) constant temperatures.

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Stihl 011 AV chain saw recently started leaking bar oil into the carrying case over time. Mechanic said air pressure changes could be forcing out. In approx 25 years it never leaked. An old Stihl general manual for dealerships I obtained when teaching small engine maintenance & repair indicated possibly plugged breather. Can’t find exploded diagram to locate breather before taking it apart.
Is it easily accessible without major dis-assembly?

ANSWER : I worked at a tool rental store while attending college and rented this saw. These saws would leak oil on the shelf. This problem is related to oil pump diaphram /check ball / diaphram spring or gaskets. The following link is the manual for your saw. Read the section on “Cleaning the Oil Pump”. Most likely pulling the pump will reveal the problem. The mechanic would remove the diaphram and spray cleaner in tube. There is a check ball in the system that may not be visible and could have debris holding it open. Good luck with your repair

http://www.stihlusa.com/stihl_ownersmanuals/STIHL010_011_with_safety_manual.pdf

Read Full Q/A … : Garden

Ms 170 leaks bar chain oil out bottom, no oil on chain

ANSWER : Your clutch drum bearing has gone bad, letting the clutch drum to move around and cut into the oiler behind it, so now it just pumps the oil out that hole. You have to get that fixed to use the saw, otherwise you’re going to cause catastrophic damage to the saw very soon.

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My 290 isn’t oiling chain. I tried adjusting oil flow and still no oil?

ANSWER : You have to remove the bar and clean it out

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I HAVE AN O17 STIHL CHAIN SAW AND IT LEAKS CHAIN OIL
EVEN WHEN IT IS NOT BEING USED

ANSWER : That can happen. When you go to store it, open the oil cap and then close it to lose the pressure the pump builds up inside.

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Bar chain oil leaking into case when not in use

ANSWER : If you store it somewhere other than a climate controlled building , the changes in temperature can cause the oil to expand out of the saw a little each time the temp. goes up.

try some absorbent cloth

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How do I repair the oiler on my stihl chain saw model 028

ANSWER : You have to remove the little white gear to be able to get to the screws to remove it.

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My chainsaw leaks oil out of a small hole or drain just below the base of the bar. is there anyway to way to stop this

ANSWER : Are you sure you aren’t talking about the chain oiler system? There is to be a small amount of oil to lubricate the bar and chain.

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Poulan 14″ gas leaks bar oil all over, plenty on bar/chain, using thin synthetic oil.

ANSWER : Use actual bar oil sold for that purpose. It’s thicker and won’t run out like water. Synthetic oil is very thin does not have the proper density.

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