Dewalt DCCS620B Instruction Manual - Page 6

English and enables better control of the chain saw in unexpected situations. • Only use replacement bars and chains specified by the manufacturer. Incorrect replacement bars and chains may cause chain breakage and/or kickback. • Follow the manufacturer's sharpening and maintenance instructions for the saw chain. Decreasing the depth gauge height can lead to increased kickback. Kickback Safety Features WARNING: The following features are included on your saw to help reduce the hazard of kickback; however such features will not totally eliminate this dangerous reaction. As a chain saw user do not rely only on safety devices. You must follow all safety precautions, instructions, and maintenance in this manual to help avoid kickback and other forces which can result in serious injury. • Reduced-Kickback Guide Bar, designed with a small radius tip which reduces the size of the kickback danger zone on bar tip. A reduced - kickback guide bar is one which has been demonstrated to significantly reduce the number and seriousness of kickbacks when tested in accordance with safety requirements for electric chain saws. • Low-Kickback Chain, designed with a contoured depth gauge and guard link which deflect kickback force and allow wood to gradually ride into the cutter. A low-kickback chain is a chain which has met kickback performance requirements of ANSI B175.1-2012. Chainsaw Names and Terms • Bucking - The process of cross cutting a felled tree or log into lengths. • Motor Brake - A device used to stop the saw chain when the trigger is released. • Chain Saw Powerhead - A chain saw without the saw chain and guide bar. • Drive Sprocket or Sprocket - The toothed part that drives the saw chain. • Felling - The process of cutting down a tree. • Felling Back Cut - The final cut in a tree felling operation made on the opposite side of the tree from the notching cut. • Front Handle - The support handle located at or toward the front of the chain saw. • Front Hand Guard - A structural barrier between the front handle of a chain saw and the guide bar, typically located close to the hand position on the front handle. • Guide Bar - A solid railed structure that supports and guides the saw chain. • Guide Bar Scabbard - Enclosure fitted over guide bar to prevent tooth contact when saw is not in use. • Kickback - The backward or upward motion, or both of the guide bar occurring when the saw chain near the nose of the top area of the guide bar contacts any object such as a log or branch, or when the wood closes in and pinches the saw chain in the cut. 4 • Kickback, Pinch - The rapid pushback of the saw which can occur when the wood closes in and pinches the moving saw chain in the cut along the top of the guide bar. • Kickback, Rotational - The rapid upward and backward motion of the saw which can occur when the moving saw chain near the upper portion of the tip of the guide bar contacts an object, such as a log or branch. • Limbing - Removing the branches from a fallen tree • Low-Kickback Chain - A chain that complies with the kickback performance requirements of ANSI B175.1-2012 (when tested on a representative sample of chain saws.) • Normal Cutting Position - Those positions assumed in performing the bucking and felling cuts. • Notching Undercut - A notch cut in a tree that directs the tree's fall. • Rear Handle - The support handle located at or toward the rear of the saw. • Reduced Kickback Guide Bar - A guide bar which has been demonstrated to reduce kickback significantly. • Replacement Saw Chain - A chain that complies with kickback performance requirements of ANSI B175.1-2000 when tested with specific chain saws. It may not meet the ANSI performance requirements when used with other saws. • Saw Chain - A loop of chain having cutting teeth, that cut the wood,and that is driven by the motor and is supported by the guide bar. • Ribbed Bumper - The ribs used when felling or bucking to pivot the saw and maintain position while sawing. • Switch - A device that when operated will complete or interrupt an electrical power circuit to the motor of the chain saw. • Switch Linkage - The mechanism that transmits motion from a trigger to the switch. • Switch Lockout - A movable stop that prevents the unintentional operation of the switch until manually actuated. Additional Safety Information WARNING: ALWAYS use safety glasses. Everyday eyeglasses are NOT safety glasses. Also use face or dust mask if cutting operation is dusty. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT: • ANSI Z87.1 eye protection (CAN/CSA Z94.3), • ANSI S12.6 (S3.19) hearing protection, • NIOSH/OSHA/MSHA respiratory protection. WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: • lead from lead-based paints, • crystalline silica from bricks and cement and other masonry products, and • arsenic and chromium from chemicallytreated lumber.