Gday all, recently my idle adjustment at the tiller on my 15hp johnson stopped working. I took a look at it today and couldnt find out the reason why. The adjustment knob at the end spins infinetly. seems as though the plastic thread is either stripped or i have wound the knob off the end of the thread?? does anyone know a repair for this? and is there another adjustment at the carbs?
Today i had a look at the carby and only found one mixture screw and one i think is a timing adjustment screw behind the air intake??
Today i had a look at the carby and only found one mixture screw and one i think is a timing adjustment screw behind the air intake??

