K12 sparks ..how do i change them

Hey guys !..Glad i found u !..Im from romania !..Just got a k12 for my wife ...
Can anyone please tell me how do i change the sparks to this model ..! I looked everywhere for them but i cant find them !
If u guys have any pics of the location would be great !..

So the car is K12 65 HP ...gasoline 1240 cc ....

Also ..where is the air conditioning filter located
Thanks !