When working this is a very powerful machine, however after only using it a few times the trigger that controls the power to the motor began to act up and not give me the full throttle that I should have had. I have tried adjusting it several times without success. Finally took it off to see what was going on and now the on/off button doesn't work. It is very frustrating at this point and just want it to work the way it did the first three times. I also have a lot of experience using a tiller so it was nothing that I did because I have owned Hondas for many years and have not had this problem.