do it yourself mate, on the right hand side of the engine there are 2 large black rubber pipes attatched to the outside of the water pump casing remove the bottom one , crank the engine over without the bike running ie dissconect stator multiplug, above the pipe you are removing, , put water in the header tank and a very small amount of washing powder and repeat his process, do NOT remove ht lead or coil wires to minimize spark retention, do NOT put antifreeze in until you have flushed at least 4 times y washing powder you ask! trade secret!
m, January 2013