hey , how do u bleed thru gilera 172 proply , how can you tell when the air is out of the cooling system. cheers.
on the cylinder head there is a little nipple with a hole through the top, think its an 8ml head,, just undo it oncee youve filled the sytem and checked for leaks and it will hiss for 2-3 seconds and when water starts coming out tighten it up quickly.
