1. Insert a tool bit into the bar or tool head. Be sure the cutting edge is facing the direction of bar rotation.

2. With the drive unit feed shaft in NEUTRAL, position the bar so the tool bit is near the work to be bored.

3. Adjust the setting of the tool bit to obtain the bore diameter required.(JOYSUNG offers a bore-measuring device especially for setting the tool bit height and checking the actual bore diameter.)

4. Tighten the setscrew to secure the tool bit then make sure accuracy of the setting.

5. After the hole is machined, turn off the motor and clean the iron cutting on the boring machine.

6.To clean the iron cutting, the power-off drive unit must be set in the neutral position. The sharp tool may cause scratches during the cleaning process. You can remove the tool and then clean it.