Thanks for your reply bushman.

I had 2 stroke bike but not like this one. I was looking for a 500 but it was far away from my budget.
I want to check the engine first off all to see what needs to be done and the i'll try to purchase all the stuff at once.
The bike does not have user manual so i have to read the forum to understand the bike.
I've see there is a rotating knob near the choke lever, what's for? for oil supply?
I'm really ansius to go for a ride .