Hi tomo, I presume you are using fresh fuel....What I would try is a capful of fuel straight down the plughole and with a dry plug replaced, see if it will run....if it does, your carby may be the prob.
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl
