Help with Stihl FS94R Trimmers.

Discussion in 'Mechanic and Repair' started by ed2hess, Jun 17, 2019.

  1. jkilov

    jkilov LawnSite Bronze Member
    from MS
    Messages: 1,417

    The cylinder base gasket is not hard to replace. Just undo the bottom 4 bolts and pull the cylinder off.

    If the crankcase gasket is leaking, that is a bit harder.
     
  2. OP
    OP
    ed2hess

    ed2hess LawnSite Fanatic
    Messages: 15,830

    what about slapping right stuff on the cyclinder gasket?
     
  3. Walker56

    Walker56 LawnSite Fanatic
    Messages: 13,719

    Ed, I never use any type of gasket maker/sealer on base gaskets.
     
    Cam15 likes this.
  4. OP
    OP
    ed2hess

    ed2hess LawnSite Fanatic
    Messages: 15,830

    Do you know part number on cyclinder gasket? I need somerthing to describe to dealer what I need. Is it cyclinder gasket?
     
  5. Walker56

    Walker56 LawnSite Fanatic
    Messages: 13,719

  6. OP
    OP
    ed2hess

    ed2hess LawnSite Fanatic
    Messages: 15,830

    Got back to this FS94R......will order gasket tomorrow. The rings are loose in the groves..ok. Little wear on skirt but I think it will be good to go.

    KIMG1253.JPG

    KIMG1254.JPG
     
    Walker56 likes this.
  7. Walker56

    Walker56 LawnSite Fanatic
    Messages: 13,719

    Ed, was the gasket blown out or deformed where it was leaking?
     
    Cam15 likes this.
  8. BigFish

    BigFish LawnSite Fanatic
    Messages: 5,140

    C'mon, bud, you really gonna re-use the rings ?
     
  9. OP
    OP
    ed2hess

    ed2hess LawnSite Fanatic
    Messages: 15,830

    Sadly the gasket seems fine..but pretty sure
    Compression is good I am finished with trying to get these 7 units back in business. I have little confidence that this $12 gasket will turn it into useable machine....I am just curious if I can get it running....
     
    Cam15, hort101 and Walker56 like this.
  10. Cam15

    Cam15 LawnSite Silver Member
    Messages: 2,117

    Just wondering why didn't you just dump them off at your stihl dealer to repair for you?
     

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