I had what looked like 4 pinhole leaks in the top tank of my rad. According to my mechanic, all I needed to fix that is a propane torch, flux, and acid core solder. I spent a lot of time wrangling a funnel into place under the radiator drain so I could lower the coolant level. I had a section of old hose on the funnel to drain into a bucket, since I didn’t want to remove the skid plates.
Then I learned that the drain is actually a hose, not where I had the funnel under the plug I was unscrewing. So I ditched the funnel, and the hose fit around the drain hose, and into the bucket around the other end
For such a small engine there sure isn’t always a ton of room to work.
After I wire brushed and sanded where the leaks are, I couldn’t find them. Perfect. Also, this torch is garbage, and goes out once it’s anywhere near horizontal. So heating the spots was a huge pain in the ass, but I eventually got some solder where I think the leaks are...
I hope I was successful, but if I wasn’t, I’m gonna need a better torch to do this successfully.