2

I opened the case of my Sthil MS311 chainsaw and found a recessed screw in the case, but I cannot find where it came from (saw wrench head for scale). It seems to be a something used to hold liquid, because of the rubber gasket. The saw ran fine for a long time (about a year). It's been acting up lately, not sure if this is the cause. By acting up, I mean it starts fine, but it seems like the chain isn't getting enough bar oil, causing the chain to bind up.

I searched though the parts list on the usual sites, but cannot find it.

Any idea what it is and where it goes?

Back

Front

2

The rubber gasket is a vibration isolation mechanism, not a liquid holding mechanism, based on experience with the parts of my Stihl saw (different model but those parts are similar.) All the mounting points between the handle/frame and the saw motor use those rubber-mount nuts.

While lacking a convenient exploded parts diagram, the manual I found does have a list of things to check when the bar is not getting enough oil.

https://stihl.partsmartweb.com/Catdata/EMP_IMG/STGSTH/Images/SERVICE/00590215.PDF

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.