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Stihl HS80 overheating problem

Posted by Steven Whitaker on August 4, 2010 at 5:18pm
Hi Guys,Just wondered if anyone has had this problem, my HS80 seems to be constantly loosing gearbox grease down the blade, I squeeze it in and it just oozes out and over-heats. Is there a part missing do you think or worn out? I cannot seem to find any schematic diagrams or exploded views anywhere on the internet. They obviously don't want you to fix them yourself!
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Replies

  • PRO
    Gary RK August 4, 2010 at 5:39pm
    Steve, I have a PDF Stihl workshop manual that covers the HS75 & 80.

    PM and I'll see if I can send an extract to you.
  • Geoff Norfolk August 4, 2010 at 5:40pm
    Are you using the Stihl recommended grease.......... the gearboxes do get quite warm and you do need quite a high melting point on the grease.
  • Steven Whitaker August 4, 2010 at 5:42pm
    Hi Gary that would be great, not sure how to PM you on here,could you send to my email, steventhegardener@yahoo.co.uk many thanks!

    gary @ affinity landscapes said:
    Steve, I have a PDF Stihl workshop manual that covers the HS75 & 80.

    PM and I'll see if I can send an extract to you.
  • Steven Whitaker August 4, 2010 at 5:43pm
    Hi Geoff, Yes I use Stihl grease for hedge trimmers from the Stihl dealership, but it tends to ooze out onto the blade.

    Geoff Norfolk said:
    Are you using the Stihl recommended grease.......... the gearboxes do get quite warm and you do need quite a high melting point on the grease.
  • PRO
    Gary RK August 4, 2010 at 5:46pm
    Steve, on it's way to your yahoo address.

    Covers HS75 & HS80 & BG75 blower. Looks like gaskets are involved - see chapter 10.

    Its about a 1Mb file in PDF format.

    Couldn't find a way to do from LJN Mail - sorry.
  • PRO
    Gary RK August 4, 2010 at 5:53pm
    Parts list also on it's way as a seperate PDF file.
  • Steven Whitaker August 4, 2010 at 5:57pm
    Superb thank you Gary, I will post the outcome in case it helps someone else.....

    gary @ affinity landscapes said:
    Steve, on it's way to your yahoo address.

    Covers HS75 & HS80 & BG75 blower. Looks like gaskets are involved - see chapter 10.

    Its about a 1Mb file in PDF format.

    Couldn't find a way to do from LJN Mail - sorry.
  • Steven Whitaker August 4, 2010 at 6:15pm
    Update - Just removed the gearbox cover, and there is no gasket + the thrust plate has disintegrated!!!!
    AND this has been back to the workshop twice for overheating - and they did not notice..........I will be taking it to a different service centre tomorrow.....
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