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Fs120

Discussion in 'Ask the Experts' started by Rickyh, May 12, 2020.

  1. Rickyh

    Rickyh New OPE Member

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    Hey everyone I have I old.fs120 stihl and I wanna re-ring it when I search I see diff...cc..for that model...any idea what ones I need or where to look on the trimmer
     
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  2. DND 9000

    DND 9000 Pinnacle OPE Member

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    I think you have the old 2-stroke version. There is also a newer version of the FS 120 with stratified scavening engine (2-Mix from 2016) in some markets availible. Both of these FS 120`s have a 35mm piston but different piston rings. Have a look what your serial number is and let me know. Both versions have the same displacement.

    For the old 2 stroke version you need piston rings 4119 034 3001 (35mm*1,5mm).
     
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  3. Rickyh

    Rickyh New OPE Member

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    Thanks.for the reply where would I find it on this one it's like 20 years old prolly I hate to get rid of it ..also what should the compression read on it
     
  4. ayoungtexan

    ayoungtexan Super OPE Member

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    I wonder if the NE120’s are more restricted than the OE120’s
     
  5. DND 9000

    DND 9000 Pinnacle OPE Member

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    You`ll find the serial number here on the side where the muffler is on the bottom of the engine housing. There are no numbers for the compression.
    upload_2020-5-16_12-49-59.png
     
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