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Glue for Stihl plastic?

Discussion in 'Chainsaw' started by Yukon Stihl, Feb 18, 2013.

  1. Yukon Stihl

    Yukon Stihl ArboristSite Operative

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    Hi All
    I scored a MS230 that fell out of the back of a truck,was told it only cut a few tress for the power company befor the drop and roll down the road.
    I had a 025 that the top end is toast,i robed the brake handle,and handle from it for the 230,and was feeling pretty good about fixing the saw on the cheap.
    i cleaned up the corner of the case near the oil hole that got broke, then i saw it....
    A crack through the oil cap hole,looks like it would leak into the flywheel area.
    I could change the tanks from the 025,screw caps instead of flippys,either one is fine by me.
    But i'm wondering if anyone has found a glue that works on the white stihl plastic.I'm leaning towards keeping this saw and selling the 021 i have,so i'd be willing to try some glue on it.
    Thanks Thomas
     
  2. cedarshark

    cedarshark AboristSite Guru

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    I have had good luck with Gorilla Glue on plastic but I do not know if it is oil resistant.
     
  3. Roanoker494

    Roanoker494 Addicted to ArboristSite

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    Some have successfully welded plastic tanks. You will need a hot iron, like a wood burning pin or soldiering iron, and a strip of plastic robbed from the tank, usually taken from the ribs on the bottom. Some also say that string trimmer line works well for welding. If you have a Harbor Freight nearby they sell a complete plastic welding kit, if not you can always visit their website.

    This has been discussed here before and I am pretty sure several folks had found plastic epoxies that would hold on the type of plastic these tanks are made from.

    EDIT:
    If the repair will be just to seal a leak you may want to check this out
    http://www.arboristsite.com/chainsaw/75455.htm
     
    Last edited: Feb 18, 2013
  4. blackoak

    blackoak Addicted to ArboristSite

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    I have had pretty good luck with a product called Plastic Welder.It a two part glue you mix together and it sets up in about 5 minutes. I think Devco or Devcon makes it but I'm not sure. I will look the next time I'm in the shop.
    It's called Devcon Plastic Welder
     
  5. Nonprophet

    Nonprophet ArboristSite Member

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    My Stihl 440 magnum had a golf ball-sized hole in the fuel tank from the previous owner dropping it. Stihl wanted like $175 for the tank, so, I decided to try and fix it myself. I repaired it by using some similar plastic harvested from a $2 spray bottle from the hardware store. I cut the patch out of the bottom of the spray bottle where the plastic was thickest--about 1/8" or so. I overlapped the opening by 1/4" all the way around, and then I used a soldering iron to "weld" the plastic patch over the hole. As a final measure, I used JB weld over the entire patched area. I did this 3 years ago, and the patch is holding up just fine--no leaks at all.

    They key is getting a donor piece of plastic that is the same type of plastic as what you're repairing. I can't remember now what the Stihl tanks are made of, but a few minutes on the web (and the helpful folks here!) and I was able to get the info and find the right plastic to make the repair.

    Good luck!


    NP
     
    Dan_IN_MN likes this.
  6. Aldiehoggydoggy

    Aldiehoggydoggy ArboristSite Operative

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    If its just a crack. I had one i did tonight on a gas tank. I took a little hand held blow torch and heated a flat head screwdriver red hot and kinda just smeared it around the area. Worked like a charm
     
  7. cutforfun

    cutforfun Addicted to ArboristSite

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    If you use glue, stick a vacume on the oil filler and suck the glue into the crack, it will help fill all the voids and seal it up.
     
  8. andrethegiant70

    andrethegiant70 Addicted to ArboristSite

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    Seal All

    Try Seal All. Amazingly effective, though a little hard to work with due to a fast set time. It's formulated to do exactly what you're doing. I've sealed a few gas tanks with it, no failures so far.

    Seal-All Adhesive Product Information
     
    Last edited: Feb 19, 2013
  9. Brushwacker

    Brushwacker Addicted to ArboristSite

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    + 1 for seal all. I use it on the old style stihl fuel caps that most people overtighten with a screw driver and break the seal between the inner and outer section that causes them to leak. I fill the whole slot so no more screw drivers go in it.
     
  10. LegDeLimber

    LegDeLimber Addicted to ArboristSite

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  11. Yukon Stihl

    Yukon Stihl ArboristSite Operative

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    Hi All
    Thanks for the suggestions.I have used seal all in the past,i have a gas tank on my bush truck that i fixed over 20yrs ago,still was holding last time i used it.
    I was hoping to come across a thin glue that is compatable with the plastic.The crack runs through the oil cap hole,i figgered a thin glue would wick into that area leaving it smooth for the oil cap to seal.
    Thomas
     
  12. SteveH

    SteveH AboristSite Guru

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    That Seal All looks like it'd be good to have around. Their web site doesn't say where to get it. Where you guys find it?
     
  13. Yukon Stihl

    Yukon Stihl ArboristSite Operative

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    Walmart has it up here.
     
  14. Chris-PA

    Chris-PA Where the Wild Things Are

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    Advance Auto has it around here.
     
  15. JeremiahJohnson

    JeremiahJohnson ChainsawRepair is where it is @

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    I've used seal all on everything from metal to plastic tanks. Right now I am redneck fixing a cracked plastic oil tank on a 029 with it. Great stuff. :rock:

    Napa, Pep boys, advanced auto, wally world etc.
     
  16. andrethegiant70

    andrethegiant70 Addicted to ArboristSite

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    I got mine at Home Depot.
     
  17. furb

    furb ArboristSite Operative

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    x2 on the devcon plastic welder. I used it on two HS45 handles and they haven't failed yet.
     

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