[Kenthammer]

Anybody happen to know the plastic joint O ring size please
Honda pn 16024MZ2E00

These are the usual O-rings that go between carbs 1-2 & 3-4 on the plastic joint pieces from the fuel inlet hose from the fuel pump.

Have searched the site and can see people having the same issue but no mention of O ring sizes and the schematics from the parts fiche are a bit confusing coupled with they are astronomically expensive in the UK for a few Viton O rings.

 

[ceeejay]

You have probably fixed it by now, I had same problem with these parts for my 99 model . The solution was simple, just measure internal diameter and width of O-ring and these can be ordered from several suppliers on ebay ,they virtually cost pence , compared to ridicules prices quoted from Honda All o-rings are pretty standard , you just need to supply the sizes you require and remember to state type of material, which is important for carbs