Glue for Stihl plastic?

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Yukon Stihl

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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
 
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
 
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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
 
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
 
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
 
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.
 
+ 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.
 
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
 
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