Instruct: Classify Amazon reviews into positive or negative sentiment
Query: terrible

They evidently updated this product so that it will start reliably and quite easily. I purchased it because it was a 4-cycle and it had the detachable shaft to work with my existing accessories. The problem with this beast is 1)it has no shoulder strap, 2) is has *heavy* vibration. There is no vibration padding on either of the handles. 4-cycle engines are supposed to be balanced and smooth. This one is clearly not. As the rpm increases the vibration only gets much worse. I'm returning it to the store after only 20 minutes of use.