There are some simple steps that can reduce oil leaking from the chainsaw but it’s important to understand why chainsaws leak oil in the first place. All chainsaws have an oil tank which is designed to store special oil until it’s pumped through to the guide bar by the oil pump. If you need to keep oil in the tank, then the best way to vent your chainsaws oil tank is to lay the chainsaw on its side with the oil cap pointing upwards and open the cap slightly.
I bought a used MS661 that leaked bar oil from under the clutch cover and mysteriously had metal shavings in the oil tank. It turned out that the front bar mount bolt had been heli-coiled, and when they did that, they had drilled through the case into the oil tank.
stihl chainsaw is leaking oil Related Question:
Why is my Stihl chainsaw leaking chain oil?
This condition is deemed to be normal for any chainsaw with a similar bar & chain lubricating system. If the unit continues to seep oil after a few days, the problem may be the vacuum relief valve located in the side of the engine housing between the oil output hole and the bar stud(s).
Is it normal for my chainsaw to leak oil?
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.
Why is my chainsaw leaking oil from the bottom?
What causes a chainsaw to leak oil? As the oil is pumped from the tank through to the guide bar, air begins to replace the space where the oil was previously stored. If there isn’t proper ventilation of the oil tank, a vacuum can occur and reduce the flow of oil to the guide bar.
How do you adjust the oil on a Stihl chainsaw?
Insert a small flat-head screwdriver into the oil adjustment screw on the underside of the chainsaw. Turn the screw clockwise to increase oil flow or counterclockwise to decrease the oil flow, reveals Stihl USA.
Where is the oil relief valve on a Stihl chainsaw?
Re: stihl oil vent Facing the muffler look to the lower left corner. You should see it there. Sometimes compressed air is necessary to remove it. After you have removed the plastic plug replace it with a 6mm machine threaded screw.
How much bar oil should a chainsaw use?
When to Oil Gas chainsaws use about one tank of bar and chain oil for every tank of fuel, so fill the reservoir every time you fill the tank.
Why is my Husqvarna chainsaw leaking chain oil?
The oil must be of a viscosity that adheres to the chain without being too thick or too thin. If you’ve chosen the wrong oil for the machine, that may be the reason it’s leaking from the bottom. Husqvarna strenuously warns users to never use waste oil in a chain saw.
How does a chainsaw oil pump work?
But how does a chainsaw oil pump work? The crankshaft drives the pump, which draws oil from the tank and pushes it onto the guide bar via the outlet hole. The movement of the chain then distributes the oil along the entire length of the guide bar.
How do you adjust the oil on a Stihl ms271?
Slightly rotate it left or right to properly align the screwdriver with the screw. Once it clicks in, you are good to go. Remember that rotating it clockwise will increase the oil flow, and rotating it counterclockwise will decrease it.
How do I clean the oil tank on my Stihl chainsaw?
Half fill the tank, close, slosh around, leave sit a while, slosh some more and empty – repeat a few times. Then retrieve the filter line with a hooked wire, change filter, fill with white spirits again and run the saw a while to flush the chanells and pump.
Why does the chain come off a chainsaw?
Chainsaw chains come off the bar due to worn-out bars, worn-out sprockets, and wrongly set tension. You should also note that with continued use, chains lose their tension and hence are more likely to come off the bar when you least expect it.
How much does it cost to tighten a chain on a chainsaw?
It should “give” about a 1/4 inch from the bar without much effort. Finally, while still holding up on the tip of the bar, tighten the bar nuts. Proper chainsaw chain tension is safer, it cuts better and it will extend the life of both your chainsaw and your chain.
Why does my chainsaw chain keep getting tight?
Re: Chain tightens by itself Has the oiler stopped working, or the oil feed hole in the bar got plugged with sawdust. Running without oil will do that sort of thing.