Quick question - bung/plug

[scbk]

Is there supposed to be some kind of bung/plug/breather or something in this hole? It seems to go down into the oil tank, and lets out a small drip whilst the saw is running.

 

 

 

 

 

 

I have parts diagrams but I can't see it anywhere!

 

Saw is a stihl ms250

[spudulike]

Parts diagram here (IPL) - Plance éclatées MS 250-MS250C : Smaf-Touseau.com

Click on "ok" if it doesnt display.

 

Spud

[scbk]

Yeh I've got the parts diagrams but I just can't see it mentioned anywhere

[raker]

Fair bit of heat being generated there to cause that burning.Is that normal?

[morten]

Fair bit of heat being generated there to cause that burning.Is that normal?

 

It's a MS-250, with a plastic body - not alloy like the 260. Hence the discoloring.

[Pete Mctree]

it looks like a breather. if oil is leaking out i suspect there might be a partial blockage in the oil line

[John Russell]

Looks to me like there should be a dipstick in it: makes sense if it goes into the oil tank.

[scbk]

The hole by the exhaust seems to meet up with the normal hole for the guide bar (so not into the tank).

 

I just can't figure it out. I tried blocking the hole with a short thick screw, and with the bar off, oil streams out of the hole for the guide bar, as it should. But when you put a bar and chain on, the oil doesnt seem to run along the bar. The bar and oil hole are totally clean, and I even tried a different bar. Also tried blowing out the hole with an air line

[scbk]

Has anyone else got a simillar sized stihl, and does it have the hole going down by the exhaust?

[Wee Jim]

what happens when you blank it off??