Mylo44 wrote:Thanks Hamster..... where is the screw....? or are you talking about the jubillee clips either end of the hose....?

Bleed screw is behind gold [plastic] cover above the water pump.It is partially obscured by one of the hoses,
This screw has a very fine thread so extreme care is needed when carrying out any work to it ,especially when relocating it as its very easy to cross thread it when trying to relocate it , with the oil supply hoses pushing against it.
Good luck
regards Mike

^^What fallenmikethebike said.

Right hand side of the engine.

Thanks for the advice, Turns out it was the classic Oil sender switch. I took it out, dropped a bit of 2 stroke out of the bottle, and popped it back with some sealant around the top of the switch... hopefully that should stop it pissing all over the garage floor.

Thanks