Rebuild Magnum petcock?

Mine is leaking. Don't know if it's from age, bad seals/washers etc. Has anyone tried to dismantle and rebuild? Replacement costs around $30, which is why I ask. Also, has anyone every jerry rigged a generic on/off valve to the Magnum tank and, if so, how and from where did the valve come?

Re: Rebuild Magnum petcock?

See Ya Moped Army /

There's a little round rubber gasket in there with 3 holes in it. Over time, it hardens and disentegrates. That's what causes petcocks to leak. Unless you can fabricate that little rubber piece (it's a lot harder than you think), you'll need to buy a new one.

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