This time, at Repeat I bought it. Mileage of 5000 Km from last time Doing it It will be replaced.. Since it is 2 stroke, electrode wear and carbon etc. The adhesion of I think that it is the best time for exchange Indeed when it comes to a new Plug, startability is It gets better and Idling also stabilizes. Although the price is somewhat high, the performance that it is responsible for I think that there is.