Carl, don't see any notes in my junk. I'll have to go out and look. Hope it's there on frame?? That hitch is really diff than I've seen anywhere. Even the metal 3pt frame seems quite different from the hand lift ones. Did you see I sold my 1240 and the 1622 at show? Didn't want to real bad, but trying to reduce around here and had to make decisions of which ones. Gonna be looking back into the 1641 more now, seems like nice set-up, little easier to steer and Vanguard seems like nice engine. Now if I could get it to start easier. Seems I need shot of either to get first start. After that, is fine when warmed. Kinda weird. Was told gaskets on valve covers and areas are not sealing enough for fuel pump to get vacumm. Ever hear such a thing? Yours Vanguard?
I think with the one I posted at the top of this thread I've sorted out the year letter at the end of the serial number. That one ended in J and was bought new in 1991. Mine ends in M and I believe it to be a 1994. If I'm right that would make K a 1992 model.
Mine has the Vanguard V-twin. Easiest starting engine I've ever had, only takes a bump of the key and it fires right up (of course that's if I remember to pull the choke when it's cold).
I can see where a crankcase leak would keep the fuel pump from working properly. When you first start it though it should have fuel in the float bowl. Mine will run for several minutes before it tells me I forgot to open the fuel tap.