Bought this June 25th and received it on June 30th (after a weekend). Assembly requires mechanical know-how and a floor jack helps. I suggest draining oil that comes in the atv and replacing it (15W-40 about a quart) before starting. Also replace that oil again after a couple hours running. Replacing the stock plug with a NGK D8EA is also a good idea. Mine came with a defective fuel filter that was easily replaced from a small engine shop. Make sure when attempting to start that the kill switch on the left handle bar is in the center position and you push it in till it clicks. You also need to pull back the brake and either hold or use the push pin lock.