33CC Gas Powered Jack Hammer Concrete Breaker, 1000W 2-Stroke Demolition Jack Hammer with 30J Impact Energy, 4000BPM for Concrete Breaking, Rock Drilling - Includes Point/Flat Chisels, 3 Drill Bits

Put threadlock on every bolt! The bolts vibrate loose, often within 10 minutes, even after they've been reinstalled. Also, the power may not be enough for heavy applications as I've found that the chisel won't always move even at full power. The jackhammer does start easily and it is not difficult to manuever.

With this being a Chinese style rock drill. The way that it operates is different than American small engines. What I mean. To start open air intake, turn oil intake to start positioning. Pull until first fire, then turn oil valve to run positioning. Pull start again and that is the speed of the machine. Kill switch is the push button on top. Took about a day to get it running correctly for feild personal to us in feild, and we are using it as a back up machine.

Followed the instructions, lubricated, added fuel and engine will not start. Tried to start it for over an hour. Requesting refund.

I’ve built a lot of fence over the years so I was skeptical, but after using it today I’ll tell you this is the best purchase I’m made in years. It fired right up and did the job of busting up concrete. In two hours I drove 44 7 foot t-posts in heavy clay and rock.