Our core drilling machine combines functionality and versatility in one device. It is ideal for lighter drilling work. 1x Machine Stand 1x Set of accesory. Water connection with hose approx. Non water seal cage reduce maintenance costs. Aluminum alloy material ligher and steadier. Suitable for sampling concrete, cement, brick, bituminous pavement and block. Rated input power: 3300W. The largest drilling capacity: 6.5 inch. Spindle thread:M22(22mm). It fit M22 Drill Bit(sale Separately). The Spindle thread is not 1 1/4andldquo;!! First, install the screw connecting the stand and the pedestal. Before use the drill, you need to fix it. Remove the two screws on the back of the stand. Seperate the stand and the pedestal. Rotate the pedesta 180anddeg; and install the screws. Here are two ways. Choose a hollow tube according to the height of the place which need to be drilled. Put one end of the tube against the adjustable screw rod. And turn the rod reversely to fix the driller tightly, expansion bolts are not needed. Make a hole on the wall or the groud and install the bolt. Install the screw rod and the stand. Then tighten the nut. Install drill bit Before installing, you need to smear some grease on the drill end thread in order to discharge easily. After instlling, you need to run the driller at an idle state at first. Attention: Before you install or remove the drill bot, you must be sure the drill is powered off. Before running, the drill must be connected with clean cold water. Here are the ways to inject water. Using tap water: Connecting the tap and the machine with the injecting hose. Hanging a bucket over the drill. Start the drill at an idle state. Then open the water tap. When there is water flowing from the drill, you can start drilling. At first, you need to drill slowly and increase strength gradually. After you drill deeper than 5mm, you can increase your push strength. If the drill’s rotating speed decrease, than proves that the drill is overloaded. Then you need to decrease the push strength, avoiding the drill being stuck. If there is smoke coming out, you must pull out the drill right away and start to drill after a while, avoiding the engine being burn down. When drilling reinforced concrete, current increases and the drill will vibrate. Therefore, you need to decrease pushing strength but the decreasing amplitude should not be too big. Otherwise, the effiency will be affected and the drill bit will be worn more badly. When drilling reinforced concrete containing little grains of sand and small stones, the drill may be overloaded suddenly and the drill be powered off automatically. At this time, you need to pull out the drill right away and clean the hole you drilled before you start again. When you drill woof board and thick pitch, you also need to decrease pushing and drill slowly. Taking out drill core. When you are going yo drill through the board or wal, you need to slow down, avoiding the drill bit being stuck. If the drill bit is stuck, you need to power off the drill immediately pull out the bit and clean it. Fetch out the drill core. Install the drill bit and start again. Attention: You should be careful when taking out the drill bit, noting damaing it. Then you need to tighten the screws to adjust the distance. At the same time, you need to make sure that the pedestal and the stand is connected firmly. This drill can be used on brick, stone, reinforced concrete, rock, and fireproof materials. We are committed to providing customers with high-quality and cost-effective products! Thank you for your support! France, Germany, spain, Italy. Feedback is very important to us. It is impossible to address issues if we do not know about them! Please keep the original box or packaging within 15days since item received. Your satisfaction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.