Stihl MS260 pro Over-lubricating?

Discussion in 'Mechanic and Repair' started by Grn Mtn, Sep 7, 2007.

  1. Grn Mtn

    Grn Mtn LawnSite Senior Member
    Messages: 863

    I have a new (less-than year-old under 20 hours) Stihl MS260 Pro chain saw that seems to be over-lubricating, and or may be some how mixing fuel with the lube.

    I had a hard time cutting the otherday and decided that the blade may be dull (I did just loan it to a friend) like it hit the dirt. So I cleaned everything spotless changed the blade and ran it up close to a board. It is spraying lube oil, but it also seems to be dripping lube oil from somewhere near the rear chain sprocket. Also the lube oil is dark like the gas/oil mix is in it? I don't recall this happening with my last 260pro I had for 4 years. Anythoughts.
  2. Juan_Deere

    Juan_Deere LawnSite Senior Member
    Messages: 301

    Have you tried adjusting the oil screw? Page 44 in the owner/operator manual. All the oil I ever see come of the blade is dark looking, even though the stuff I put in the reservoir isn't.
  3. 44DCNF

    44DCNF LawnSite Bronze Member
    Messages: 1,915

    Dump the oil tank and refill it. Could the borrower, not knowing better, have put gas in the oil tank? Does the oil on the chain smell of gas?

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