my piston went and have had it rebored but now the engine doesnt tick over it starts but the throttle has to be pulled and it cant be left running as it dies out but it does go but wont pullaway untill at half throttle maybe timing is out or mixtures are wrong any one know how many turns the screws need for the right setting on the carb someone please help me and my mates have been at it a week!?

JP, February 2006

where can i get new plastics cheap for a speedfight2 307 wrc scooter?

chris, March 2006

well the timing doesnt go out on them its preset into the cdi unit and it doesnt have valves that need timing up either,it sounds like either the person who has rebuilt it has maybe done a bad job and broken a piston ring or two or something else which has lowered the compression ,if the bike was ticking over fine before it had a rebore ect...then it should still be fine on the settings the carb had then ,the mixture screw should be 1 and a half turns out after scewing it all the way in and the tickover screw should be wound in as far as it takes to make the bike idle at a reasonable speed ,also a blocked exhaust pipe will cause the symtons you mentoined so check its easy to blow through when taken off,ok good luck ill check your reply and try to help more if needed ,adam

adam, February 2006