Hitachi DH30PC2 Instruction Manual - Page 12

English 8. Selecting the driver bit Screw heads or bits will be damaged should an inappropriate bit for the screw diameter be employed to drive in the screws. 9. Selecting the function mode You can switch functions to the 3 modes of "hammering only, "rotation + hammering", and "rotation only" by turning the change lever while pressing the push button. Set the mark position of the change lever to that of the mode to be used. CAUTION: Before operating the change lever, check and make sure that the motor has stopped. A failure can occur if it is operated while the motor is running. To operate the change lever, press the push button, and release the lock of the change lever. Also, check and make sure after operation that the push button has returned and that the change lever has been locked. Switch the change lever without mistake. If it is used at a position halfway, there is a fear that the service life of the switching mechanism may be shortened. HOW TO USE CAUTION: To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle when the drill bits and other various parts are installed or removed. The power switch should also be turned off during a work break and after work. 1. Switch operation The rotation speed of the drill bit can be controlled steplessly by varying the amount that the trigger switch is pulled. Speed is low when the trigger switch is pulled slightly and increases as the switch is pulled more. 2. Rotation + Hammering This rotary hammer can be set to rotation and hammering mode by Change lever Push button pressing the push button and turning the change lever to mark. (Fig. 4) Turn the grip slightly and confirm that the clutch has been engaged with a click. Fig. 4 12