i have ryobi petrol strimmer and it will only start when cold but will not run when i put the choke off. i have replaced the carbuerrator, the heat dam as this had slight crack and all revellant gaskets and fuel pipes. there are a good spark at the spark plug. cut it be taking in air around sealant on the fuel tank.

patrick, January 2010

sounds like just d idle screw,think its 1 3/4 turn 4 that model

trev, February 2010