And I see that you have now ran completely out of class...
I was not aware that I needed to make a point, merely offering up a suggestion to help the OP.... BTW...that wasn't you!.
Instead of going on the offensive at somebody offering a suggestion that you may not like, why not just try keeping your mouth shut since it wasn't about your tractor to begin with???.. Seldom does one solution fit every situation... and this is an example of that. While a simple petcock may be all you have ever needed, there could be one reader that is looking for an alternative to trying to remember the petcock... Not sure about others, but thats what I use this forum for, is to gain knowledge and share when able...
I apologize to the OP for this going as far as it did..... I consider this matter closed.