Just because you have a Pingle or other manual petcock

[Thunderbolt]

doesn't mean you can't hydro lock.  Iris and I rode over to Lake City to eat at Sonny's today.  Was a beautiful day for a ride here in the Northern part of our fair state.  When we came out the Interstate spun a partial turn and stopped.  I did not have the Pingle manual petcock turned off.  So it doesn't do any good to have one if you don't use it.  I asked my sweetie to give me a shove down a small downgrade in the parking lot with the key on and the bike in second gear and it fired up when I popped the clutch.  She got on and we were on our merry way, but it really smelled like a lot of raw gas as we took off. 
So be careful out there pilgrims, if the engine stops turning while you have the starter engaged don't hit it again.  Either push start it or take the plugs out and spin it over.  I have the Kuryakyn plug valences, so not easy to pull the plugs.
I think I will add a little Sea Foam and hope it helps the sticky float valve.

[Tropic traveler]

Terry, I think there may be enough gas in the carb bowl & the feed line to hydrolock a cylinder if it is in the right position at shut off. The pivotal cause of a hydrolock is a open needle & seat. If the circumstances are just right {or in this case just wrong} you can have a perfectly functioning petcock & still hydrolock.
You are absolutely correct about being vigilant upon start up to prevent hydrolock damage!

[Tundra]

 Good idea with the push start, can that cause any other damage during ignition or does it just burn the extra fuel?
 I trained myself, engine off/petcock off. Even just for a fuel stop.
Glad you caught it just in time. That is something we can all take note of and hopefully save us some heartache and cash in the future.
Thanks for sharing

[Thunderbolt]

As far as further damage, not sure.  If it sat too long I imagine some gasoline would leak into the crankcase and give you more problems.  As far as immediate damage as I mentioned it did smell strongly of gasoline, so I'm sure that cylinder pushed a lot of gas out that exhaust pipe on the 6X6.

[OnaWingandaPrayer]

  There is also the chance that you can bend a rod . Liquid fuel will not compress .

[wizard -vrccds#125]

Push it backwards in 2nd or 3rd gear. That allows the fuel to exit through the exhaust valve without compressing it ! Just make sure you go at least one complete cycle of all 6 cyl. Then it is clear to hit the starter !   

[Thunderbolt]

Appreciate the input.  It's one of the things you hope you don't need to know, but good if it is in the back of your mind somewhere.

[FloridaValkRyder]

Push it backwards in 2nd or 3rd gear. That allows the fuel to exit through the exhaust valve without compressing it ! Just make sure you go at least one complete cycle of all 6 cyl. Then it is clear to hit the starter !   

Wow..that's a great tip. I have never heard that before!!