Bing 54 (enrichment/choke circut)
New rotax 582 owner, I'm currently in the middle of tearing down my bing 54's for a rebuild however ive ran into a slight issue. In the enrichment circuit there appears to be a small o ring however in my rebuild kit I dont have a ring that appears to be this size? Also whats the difference between this one and the newer solid brass piston type ones?
One thing I noticed is that in this diagram there appears to be no sort of o ring between the parts and the carb? Is there supposed to be one in the hole? on one of my carbs the o ring is as pictured below, yet the other one was completely dissolved and crudded up the hole?
http://procarbshop.com/pdf/54x2.pdf
Thanks!