1975 KZ400 - Petcock Replacement?

So my newly aquired KZ400 has a leaky petcock that someone has globbed up a bunch of JB
Weld or something of that nature on in a poor attempt to fix it. I have a new Honda
petcock that is identical save for the outlet positions- no biggie there. My question is-
how the heck do you change the thing?

2 bolts. Unless it's a single pip threaded petcock. If you can't see the bolts I would guess they jbwelded the bolts. Sounds like a real hack job. You need to get the jb off and get the bolts out. Can you supply a picture of where the petcock attaches to the tank? Might help with suggestions as to how to fix it.

It's not the threaded type, that's the only type I've ever changed. What I'm seeing here is that there is a removable (sediment?) bowl on the bottom of the petcock...the one on the bike has been Jb'd on and therefore doesn't look like a removable part anymore. I'm guessing that comes off and
there lies the screws?

Looks like you need to remove the sediment bowl. I guess Honda uses the same one: cgi.ebay.com/ebaymotors/HONDA-CB500-CB75...fPartsQ5fAccessories

Yep it looks like the bown had to come off to access the bolts
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