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Stihl 031 AV ignition

Discussion in 'Chainsaw' started by Duke M, Jan 14, 2009.

  1. Duke M

    Duke M ArboristSite Lurker

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    I have an 031 AV ,what do u have to do to put an atom module on it,so I can get rid of points and condensor?Thanks Duke
     
  2. Rookie1

    Rookie1 Addicted to ArboristSite

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    Hey Duke, Here is a thread that should be helpful. http://www.arboristsite.com/showthread.php?t=25974&highlight=031 ignition Also do a search for 031 ignition or spark. There are lots of other threads about it. I wouldnt be too fast to junk points. That saw is 30+ years old and the points have worked til now. Fix em and get another 30. Ill say condenser is the problem without seeing it. :)
     
  3. Lakeside53

    Lakeside53 Stihl Wrenching

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    Yes.. and much better spark at recoil speeds with Points than electronic..
     
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  4. flyboy

    flyboy ArboristSite Operative

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    I put the electronic in.....then stripped it out and went back to points because it worked better.

    If it is the condensor, you can just replace it with a polypropylene capacitor from Wima or Vishay. It needs to be about 0.2uF and 400V or more and have a low dissipation factor.

    I used a Wima MKP4 0.22uF 630Volt 10% tolerance part with perfect results.

    I am having trouble finding that part at distributors. You may be able to get away with a 250V version of the same part. Worth the experiment for under $1 in my opinion.

    http://www.mouser.com/Search/ProductDetail.aspx?qs=76AoAlxFV7iVSP2ZUUrtYg==


    I glued mine in the spot where the original condensor was (used silicone). I soldered to leads to it and attached one to the block and one to the points.
     
  5. Duke M

    Duke M ArboristSite Lurker

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    Thanks for the info, the condenser is probally bad,but points are also burnt .Where do I get that capacitor and a set of points thanks a million Duke
     
  6. flyboy

    flyboy ArboristSite Operative

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    The link is in my original post for the capacitor. I would try just the points first. Just clean them up with emery cloth and set the gap to whatever the book says.... 0.018" I think.
     
  7. Duke M

    Duke M ArboristSite Lurker

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    I was wanting to find out where u got that capacitor, can get one at radio shack ? what do I ask for? where is your oringal link? Thanks Duke icecreambanditok@watchtv.net
     
  8. AOD

    AOD Addicted to ArboristSite

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    Geeze, today must be the day for everybody to pull out their 031's.

    I should dig mine out from under the bench.
     
  9. flyboy

    flyboy ArboristSite Operative

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    The original Wima cap I used came from a sample kit that they give electrical engineers (which I am).

    I think that the cap that I found at mouser.com (link above) will work fine.
     
  10. Duke M

    Duke M ArboristSite Lurker

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    Thanks ,I went to that web site and orderd 4 of them for less than 4 dollars thanks you Duke
     
  11. Fish

    Fish Account Hold

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    set points at 16 thou.
     
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  12. flyboy

    flyboy ArboristSite Operative

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    Duke. You will have to solder short leads to the cap to attach it (it does not have a medal case, so both leads). I used blue glue (gasket maker silicone) to secure it in the original location.

    Please reply with your results.
     
  13. phelps63

    phelps63 ArboristSite Member

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    I just bought the item above and it works great. I had bought a 031 listed as needing a carb adjustment because of hard starts. Not only was it hard starting but would not rev. The local Stihl dealer tells me to junk it bad ignition. Parts obsolete he tells me. So I figure I can get them off ebay. I buy from a guy claiming to have new 031 points and condenser for 19.99 a piece. They get here along with the flywheel puller another 20.00 and don't even come close to what is in it. I was going to part it and sell it on ebay till I read this post. THANK YOU FLYBOY for .83 cents plus 6.00 shipping with barely a tug it fires up and runs real strong!!:greenchainsaw::greenchainsaw:
     
  14. flyboy

    flyboy ArboristSite Operative

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    I'm really pleased they worked for you as well. Mine have been in my "go to saw" for more than a year now.
     
  15. frecato

    frecato ArboristSite Lurker

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    I picked up a 031av about a year ago and from what i can tell i think that using the method described above it would get my chainsaw running strong again, :chainsaw: however, I don't have that much experience repairing chainsaws or anything by that means but catch on real quick and follow directions real well.

    This being said is there any way for someone to post a picture of where this piece would go and what the wires would connect to. It would be greatly appreciated!

    Thanks for the help.
     
  16. MnSam

    MnSam Addicted to ArboristSite

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  17. EtzCutter

    EtzCutter ArboristSite Lurker

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    I started a thread a while back, in regards to replacing the old capacitor/condensor in a Stihl 031...

    http://www.arboristsite.com/showthread.php?t=114902

    Within the link you will find a before/after video of how my saw ran prior to replacing the capacitor/condensor. I used the the capacitor that could be obtained from Mouser.

    Enjoy
     
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  18. roncoinc

    roncoinc Official Stihl Disser

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    I picked up some caps today,was wondering if these would work.
    .022uf @ 630v.
    anybody want to try one PM me,will send one for free,would like to know if they would work.

    [​IMG]
     
  19. flyboy

    flyboy ArboristSite Operative

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    I highly doubt those would work. They need to be in the 0.1-0.22uf range. Additionally they need to be low dissipation factor caps.....which are kind of a specialized things. The caps from Wima are proven to work on several saws. Additionally, I reverse engineered a good stock condenser to prove that out.
     
  20. roncoinc

    roncoinc Official Stihl Disser

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    Ok,how about these ??

    [​IMG]
     

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