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Stihl 041 AV How to Remove Cylinder, help required

Discussion in 'Chainsaw' started by Zolo, Jul 14, 2017.

  1. Zolo

    Zolo ArboristSite Lurker

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    Hi guys, I am trying to open/remove the cylinder for my Stihl 041 AV and I am unable to find the right tool for it, as far as I believe it has 4 trox T25 screws on the cylinder but I am not sure which tool I need to use to remove those screws as screwdriver has to be more than 4 inch long, I have T27 screwdriver from Stihl, I also have Key wrench/Allan Keys T25 but either these are not more than 4 inch long or if I found a tool which is more than 4 inch in length It is not going through the cylinder holes as the tool is too thick. I am struggling on it now as I do not know which tool I need to buy that will do the job.

    So far I have bought the below two tools

    neilsen CT2899 250 mm X-Long T15/T20/T25/T30 Star Torx Screwdriver Set - Silver (4-Piece)
    https://www.amazon.co.uk/d/Hand-Scr...coding=UTF8&psc=1&refRID=MATG17XJ2D3C06Q10S7S

    LONG ARM HEX TORX KEY SET 9PCS
    http://www.screwfix.com/p/long-arm-hex-torx-key-set-9pcs/49554

    If i buy the below tool will it fix the problem? I mean will I be able to remove the cylinder screws.

    Hakkin 8pcs S2 Steel 150mm T8-T40 Magnetic Extra Long Star Torx Security Screwdriver Bits Set
    https://www.amazon.co.uk/gp/product/B01MXIGAT6/ref=ox_sc_act_image_1?smid=A14A87C88XI8FT&psc=1

    any help will be much appreciated, let me know if you have any questions.

    Regards

    Zolo
     
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  2. Ozhoo

    Ozhoo ArboristSite Guru

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    Unless someone has changed them, they should be M5 socket head vice torx. If you're gonna make a habit of working on saws, a nice set of Wiha tools will serve you well.
     
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  3. JT78

    JT78 ArboristSite Guru

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    I bought a cheap set of t-handle Allen from harbor freight and trimmed the plastic so I could reach the screws on mine.
     
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  4. Zolo

    Zolo ArboristSite Lurker

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    Thanks for your advice, I do not use chainsaw on regular basis and I am not professional as well so spending $50 plus international shipment (I am in UK) is going to be expensive.
     
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  5. Zolo

    Zolo ArboristSite Lurker

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  6. backhoelover

    backhoelover 2 cycle carb master, don't believe me just ask!!!!

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    If you go to beg for manual thread you can get a service manual sent to your inbox
     
  7. HarleyT

    HarleyT Addicted to ArboristSite

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    Are there any other Torx style fasteners on the saw?
     
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  8. HarleyT

    HarleyT Addicted to ArboristSite

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    Or are they the Flat Cheesehead style screws? If so, the cylinder bolts should be allen head .
     
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  9. s sidewall

    s sidewall Addicted to ArboristSite

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  10. JT78

    JT78 ArboristSite Guru

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    Not sure if those will be long enough but if the original screws are still the ones in there I believe they are 4 or 4.5 mm Allen head
     
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  11. HarleyT

    HarleyT Addicted to ArboristSite

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    homedepot.jpg These are at Home Depot..
     
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  12. Zolo

    Zolo ArboristSite Lurker

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    Thanks Guys, really appreciated your response, I am going to buy this one and let 's us hope i can fix it, if i have any more questions I will come back to you.
    This website is really good, lots of help.
     
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  13. JT78

    JT78 ArboristSite Guru

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    They run good when they are done.

     
  14. JonCraig

    JonCraig ArboristSite Guru

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    They sure do. I let a good friend borrow mine running and 18". When he brought it back he was grinning ear to ear and offerred me a good chunk of change for it. I passed.
     
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