Don't take your eyes off your equipment for 1/2 a second. I came home yesterday and put the trailer in the driveway. Put my trimmers and blower in the garage, left mowers on the trailer while I went in to eat. When I came back out about 30 minutes later, I had one less commercial toro 21 to change the blade on Got lucky, was at dealer to see what I could get to replace it with since there are no more 2 strokes. I guy had called about 20 min earlier and said that he needed some parts for a mower he bought the night before. Turns out the guy woh stole my mower had taken the serial number off and sold it within 3 hours. Long story short, the guy that had bought it (dealer said that he knows him well and he would not have stolen it) brought it in, and I gave him his $125 and got my mower back. Small price to pay VS the 1700 CAN the new 4 stroke will cost.