i nead to determine year model of my ferris z1000 zero turn mower,the pto keeps kicking out.i changed the pto switch that helped for 5 minutes,then it quit again and i noticed a small stick between pulley and magnet ,i removed it and was able to mow for 2 hours then it quit turning blades again parked it for 30 minutes and noticed it worked so i mowed one path before it kicked out again --now thinking maybe silenoid.which brings me to ask what year model i have so i can order a manuel for it