Wondered if anyone has a photo of a 2.5 n/a filler cap, pretty sure the one i got on mine is non-standard as it leaks oil everwhere, and has a thread on it even though there is no thread on the engine to screw into.

Cant get a picture of mine for a few days as i lent it to a mate.

Cheers

the 'thread' may just be the ribs on the o ring that make it seal - get a new one from paddocks for pennies and it shouldnt leak any more.