Feature 1Practical Tool: The portable tire groover is a practical tool for renovating solid truck tires and other rubber tires by cutting and grooving, restoring the tire's grip ability efficiently. 2Portable and Compact: The rubber grooving machine is easy to use, lightweight, compact and easy to carry, suitable for various tire and rubber plate grooving, providing convenient operating and control. 3Adjustable Heating Power: The solid tire cutter allows stepless adjustable output power through a knob, with voltage values displayed on the LCD control panel, choosing proper power for cutting different tire groove sizes. 4Multifunctional Tool: Equipped with 10 tire blades including U and V shapes for different tire grooving requirements, cutting width on rubber ranges from 2mm to 10mm, and depth from 9mm to 14mm. 5Easy to Use: The tire engraver can groove rubber from 3mm to 20mm in width and 7mm to 16mm in depth, lightweight groover with separately controlled blade heating for easy rubber cutting.Item Type: Portable Tire GrooverMaterial: Metal+PlasticFrequency: 50/60HzApplication: Universal fit, used for tire repair and restoring tire gripQ&A1. When the screen is on but the blade is not heated and the indicator is off.The problem is that the fuze is blown, please turn off the power and replace it with a new fuze. Replace with the 10 amp fuze.2. The machine works normally, but it is difficult to push the handleIf the temperature is low, please turn the voltage knob to raise the voltage.3. The machine works normally, but when the blade cuts into the rubber, it will smoke immediatelyIf the temperature is too high, lower the voltage (press "-" to adjust) to an appropriate temperature.4. The power cord to heat up when the tire machine is working.It is normal.5. The power cable is damaged within a small rangePlease wrap with qualified electrical tape.6. Heat the blade when the machine is in standby modePower off and restart. Package List1 x Portable Tire Groover1 x Handheld Tool1 x Plug1 x Box of Accessories (22Pcs)1 x Storage BoxNoteThis tool should be used by professionals with technical expertise!