Stihl FS85

Discussion in 'Mechanic and Repair' started by GroundsMan, Jun 29, 2005.

  1. GroundsMan

    GroundsMan LawnSite Member
    Messages: 8

    I have had recent engine problems with the fs-85 does anyone know why stihl has discontinued there fs-85. Is it manufaturing problems? I own two fs-85's and both have blown engines. They are both just over 2 years old. Could anyone give me any insight.
  2. dvmcmrhp52

    dvmcmrhp52 LawnSite Platinum Member
    from Pa.
    Messages: 4,205

    Blown engines at 2 years old?
    The fs85's were discontinued for the introduction of the 4 cycles........they are no different than the fs80's other than having a solid drive shaft.

    If you've got 2 blown engines on 2 trimmers that are 2 years old, i'd have to say there is some operator error involved...................
  3. ed2hess

    ed2hess LawnSite Fanatic
    Messages: 14,586

    I have a FS85 that is almost 5 years old with heavy better take a look at oil mix!
  4. fool32696

    fool32696 LawnSite Senior Member
    Messages: 993

    I'm still running an FS 80 that I bought in 99 and an FS 85 that I bought in 01. I maintain about 30 lawns and the FS 80 is my only weedeater and the FS 85 is my edger, hedgetrimmer, and backup weedeater. Nothing but air filters and lubing driveshafts. These things are bulletproof.
  5. arborguy

    arborguy LawnSite Member
    from KY
    Messages: 14

    I agree, I'd check the oil mix. I have a 1984 fs65 still going strong. Sure I've replaced carburators and the usual maintenance items but the cylinder has never been touched.

  6. ArchZangel

    ArchZangel LawnSite Member
    from Florida
    Messages: 24

    21 years on a 2 stroke engine. Original rings, piston and cylinder? Commercial use or residential? No offense i find that hard to believe. Even a well take-care of toyota looses compression after that long! haha
  7. arborguy

    arborguy LawnSite Member
    from KY
    Messages: 14

    Good point, it's not commercial use. It's fairly heavy residential usually using the metal blade to cut brush and vines (does anybody else hate honeysuckle :cry: ). It was an expensive tool at the time I bought it and I've always taken very good care of it. Maybe I just got a really good one but the carb is the biggest thing I've replaced on it.

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