Mikuni 2 cycle carb for Minarelli type engine

[hilltopper2]

Hi! New to the forum and to owning a scooter. Found a Alpha Sport Argon 50 with 1600 miles.It has a 2 cycle minarelli style engine. When cleaning the carb. small o ring came out and I am not sure where it came from, I think it and a small washer goes in the hole where the idle screw goes. Not sure. Does the mixture screw suppose to have one too. Also I would like to replace the fuel bowl o ring but only see kits that have a gasket in them not a o ring. The o ring is not just a round o ring but it is a molded shape going around the float and another tube. Where can I get parts for this carb. Also what are the adjustments for the screws. Any help is greatly appreciated.

[90GTVert]

:welcome2:

This will show what screw is what and the parts out of one of my mina carbs...
49ccscoot.proboards.com/index.cgi?board=carb&action=display&thread=363

This explains adjustment. It's for a four-stroke, so use the above link for locating the right screws, but othewise it's the same process.
49ccscoot.proboards.com/index.cgi?board=carb&action=display&thread=429

Not sure where to get the o-ring style gasket. Not sure I've seen them for sale. :stumped:

[reveeen]

Aug 14, 2011 15:52:12 GMT -5 hilltopper2 said:

Also I would like to replace the fuel bowl o ring but only see kits that have a gasket in them not a o ring. The o ring is not just a round o ring but it is a molded shape going around the float and another tube.

VM16 parts here: (server broke, try Monday)
www.motorcyclecarbs.com/

Every time I take apart a carb with a "o" ring fuel bowl gasket the things seems to shrink..... if you run hot tap water over it and GENTLY stretch it between your fingers it will go. This will not help you if it is old, really hardened (from heat), or broken.