symphony- oil filler neck

hi folks, can anyone tell me if there should be a gauze or mesh underneath the oil filler cap. looks a bit open to me, but it could be normal. any help would be great.

Diesel or Petrol?
Mine's petrol and doesn't have any gauze beneath the filler cap, I don't really see why it should? you'll only be putting clean oil in there and there should be no bits in it.

As a slight aside, I did find that if you filled it up too fast and allowed the funnel to fill up, you get oil in the air intake ducting, through the breather system.

Frank

thanks boxerman. there was oil in breather, that's what must have happened. thanks for your help.