how do i reset my mixtur screw back to orginal settngs on a piaggo zip 50 ?

hi screw mixture in fully ,do not over tighten ,,then screw out two and half turns . all it needed was the mixture richening up a little to suit your new filter.this is just a bench mark setting and slight adjustment may be needed either way eg turn mixture screw clockwise to richen mixture ,counter clockwise to lean out mixture. good luck,.

killerdanny
October 2011