Need help with my 720LP FAST!!! Memorial day plans kaput!

I posted this in the General section just to get more eyes on it.



Aint this a B,

Been planning for the last month to set my 720lp in the front yard this Memorial day, with Ol' Glory hanging from it. Got a uncle that is REALLY into MCs that really wants to hear it run. Not to mention, just showing it off to other relatives.

Tractor has ran like a TOP! Makes great power, runs super clean, Starts almost to easy,,,,,until today

I drove it over to my house to wash it. Got it all clean, let it dry, then cranked it up to put it in the shop overnight.

I get to the shop, and it starts to idle up, like its about to run out of LP.
No biggie, I kill it, and shut the valves off.
Fill it up with LP, and then the problem started.

With the key on, you can hear a hiss, and its blowing LP up through the air cleaner oil bath assy, bubbling up, and overflowing the oil bath pan, and running over.
I took the bowl off, and with the key on, and either valve open, it blows LP past the converter, and out the bottom of the air assy.

Did the diaphram break in the converter? Is there anything that I could have "tripped" that needs to be "reset"?

I need help, I really wanted to show her off tomorrow to relatives, and half the fun is hearing it run.


Thoughts??

converter diaphram is leaking. new one at John Deere or local lp distributer

Make sure the atmospheric air vent on the regulator is not plugged up or filled with water. If thats clear I think you're gonna have to tear it apart and see what's broke.

you got a blown high pressure gasket in the reg....if it is a Century model M-41 going to be hard to find parts ...if its a Century model "H" then you can still get parts ...working on my 520LP right now & found the parts at a lot of fork lift repair part suppliers...Google up LP fork lift...model # is stamped on the left hand side of front cover...good luck ...Kent

found the card ...try "nashfuel.com"...tele # 859-881-0509...ask for Bill

Well, we got the converter off and tore into it. Neither of the diaphrams appear to have ANY tears, cracks, holes, ect in them whatsoever.
Nothing appears to be out of wack.


Also, im a LITTLE confused as to what unit I am SUPPOSE to have.
Everything I research shows that I SHOULD have a M4, however, mine is stamped M6, and has a tag that shows M6 also. It has the 12v primer button on the backside, but there is nothing that connects anything electrical to it.
IIRC, it LOOKS like I have the unit off of a 730LP.

I am at a loss.