Dewalt DCD790B Instruction Manual - Page 12
Keyless Single Sleeve Chuck Fig. 3-5 - drill
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English Speed Trigger Switch (Fig. 2) To turn the tool on, squeeze the trigger switch (A). To turn the tool off, release the trigger switch. Your tool is equipped with a brake. The chuck will stop as soon as the trigger switch is fully released. NOTE: Continuous use in variable speed range is not recommended. It may damage the switch and should be avoided. Forward/Reverse Control Button (Fig. 2) A forward/reverse control button (B) determines the direction of the tool and also serves as a lock-off button. To select forward rotation, release the trigger switch and depress the forward/reverse control button on the right side of the tool. To select reverse, depress the forward/reverse control button on the left side of the tool. The center position of the control button locks the tool in the off position. When changing the position of the control button, be sure the trigger is released. NOTE: The first time the tool is run after changing the direction of rotation, you may hear a click on start up. This is normal and does not indicate a problem. Torque Adjustment Collar (Fig. 2) Your tool has an adjustable torque screwdriver mechanism for driving and removing a wide array of fastener shapes and sizes and in some models, a hammer mechanism for drilling into masonry. Circling the collar (C) are numbers, a drill bit symbol, and in some models, a hammer symbol. These numbers are used to set the clutch to deliver a torque range. The higher the number on the collar, the higher the torque and the larger the fastener which can be driven. To select any of the numbers, rotate until the desired number aligns with the arrow. NOTE: The torque adjustment collar is only engaged during screwdriving mode and not in drill and hammerdrill modes. Dual Range Gearing (Fig. 2) The dual range feature of your drill/driver allows you to shift gears for greater versatility. 1. To select speed 1 (high torque setting), turn the tool off and permit it to stop. Slide the gear shifter (D) forward (towards the chuck). 2. To select speed 2 (low torque setting), turn the tool off and permit it to stop. Slide the gear shifter back (away from the chuck). NOTE: Do not change gears when the tool is running. Always allow the drill to come to a complete stop before changing gears. If you are having trouble changing gears, make sure that the dual range gear shifter is either completely pushed forward or completely pushed back. Worklight (Fig. 2) There is a worklight (E) located on the foot of the tool. The worklight is activated when the trigger switch is depressed, and will automatically turn off 20 seconds after the trigger switch is released. If the trigger switch remains depressed, the worklight will remain on. NOTE: The worklight is for lighting the immediate work surface and is not intended to be used as a flashlight. Keyless Single Sleeve Chuck (Fig. 3-5) WARNING: Do not attempt to tighten drill bits (or any other accessory) by gripping the front part of the chuck and turning the tool on. Damage to the chuck and personal injury may result. Always lock off trigger switch and disconnect tool from power source when changing accessories. WARNING: Always ensure the bit is secure before starting the tool. A loose bit may eject from tool causing possible personal injury. Your tool features a keyless chuck (F) with one rotating sleeve for onehanded operation of the chuck. To insert a drill bit or other accessory, follow these steps. 10