hello Omnitrac ,this may help ,not sure how much dif the 30 and 60 timing is ,bruce oz
hello dennis ,i 30/60 book show above but in the 30 operator book it says there are marked when built , so i would say that maybe have a chissel or a punch mark on the edge of each gear to line each up ,may need a brigth ligth to find ,sorry i am not more help than that ,bruce oz