Stripped tank threads 1982 250 WR

The bottom half of the threads on the tank (where the petcock attaches) are stripped out. There are still a few good threads above, but not enough to secure the petcock properly. Has this happened to anyone else? Any tips on repair would be greatly appreciated!

Kent

Thread restorer if you can find that size. Ebay has metric thread gauges for $0.82.

I believe its a kind'a odd ball Thread. If a Tap won't clean it up to where You can use it then having it welded up and re Taped is probably best. Epoxy might work. There is a product called Belzona that would also work but its very expensive.

Here is what I am looking at.

repare with parts steel and TEFLON PLUMBER

impossible ?? change with
parts NOS HVA-FACTORY !

Use the type of tap that is fitted to the older plastic tanks , you can cot of the old tap thread and use the hole , a rubber washer with a steel washer and nut on the inside. Not easy to do but you wont need to do any welding!