Hi,

after hypersonic clean of my carb there was a small brass ring in the “bathtub”

The only place it could fit is in the bottom of the hole where the main jet is.

Then it should have been vibrated loose.

It is not on any exploded views, so if it is from there it should have been pressurefitted from the factory.

It is 5mm in outer diamater and 3,1mm in inner diameter.

It looks like the main jet could sit fine in it.

But I can’t see if the bottom of the hole is straight or if it ends in a hole with angled sides. Old eyes winking smiley

Does anyone have a 20.17b housing who can say if there is a brass ring/washer in the bottom of the main jet hole?

It could also be that it comes from another cleaning before me.

Thank you

Thomas