ArboristSite.com Sponsors
 
 


Stihl 029 Super

Discussion in 'Chainsaw' started by Aufdy's lawn, Nov 13, 2019.

  1. Aufdy's lawn

    Aufdy's lawn ArboristSite Lurker

    Joined:
    Aug 1, 2017
    Messages:
    11
    Likes Received:
    1
    Location:
    Botkins, Ohio
    I've torn a 029 Super down, and knew it was scored pretty bad. But once I had it apart, I noticed that the scoring looks more like it suffered a heat seizure. It was scored clear across the exhaust side, one side, and 2 different spots on the intake side. I just want to know if I should look at replacing the crank bearings and seals, of if they might be alright
     
  2. dmb2613

    dmb2613 Addicted to ArboristSite

    Joined:
    Dec 25, 2017
    Messages:
    1,338
    Likes Received:
    1,861
    Location:
    Virginia
    The crank bearings and seal are EZ to install, I would put in new seals , if the bearings feel good they should be alright. They are strong saws with a 390 cylinder and a cross pop up piston in them
     
  3. Aufdy's lawn

    Aufdy's lawn ArboristSite Lurker

    Joined:
    Aug 1, 2017
    Messages:
    11
    Likes Received:
    1
    Location:
    Botkins, Ohio
    I figured the seals, since they take no time to do. Can you post a link for the piston you're talking about? And where would you recommend getting the seals?
     
  4. irhunter

    irhunter ArboristSite Operative

    Joined:
    Oct 21, 2014
    Messages:
    188
    Likes Received:
    79
    Location:
    Greenville, Maine
    I would get the seals at a dealer.

    You might also think about a new fuel and impulse line at this time. Also, once you have it back together, consider doing a vacuum and pressure check of the case before you fire her up.

    Roy
     
  5. Ozhoo

    Ozhoo Addicted to ArboristSite

    Joined:
    Nov 7, 2011
    Messages:
    1,810
    Likes Received:
    2,483
    Location:
    North Georgia
  6. Aufdy's lawn

    Aufdy's lawn ArboristSite Lurker

    Joined:
    Aug 1, 2017
    Messages:
    11
    Likes Received:
    1
    Location:
    Botkins, Ohio
    I figured I should do the lines as well.... definitely a lot easier to do the small stuff now, than have to rebuild because of bad small parts.

    Can any of you tell me anything about the pop up pistons? I get that they increase compression, but do I have to do anything to the timing or anything else?

    I managed to find just the piston and rings, which runs about $30. Any recommendations of am cylinders? I haven't looked to see if I think I can clean the cylinder up, but I want to have a back up plan
     

Share This Page