How much oil should i put in the bike?

After having it for a year and one trackday i think its time to do an oil and filter change.

Hi Morris and happy christmas to you.
If its a 76A take a look in the sticky at the top as 'Jay' posted all the info you will need.

usually it says it on the sump / around the clutch area on the outside of the bike, gk73a is 2.5 litres