Makita EA7300P Operator's And Safety Manual

Also see for EA7300P: Instruction manual Operator's and safety manual

Position the chain saw in such a way that your body isclear of the cutting attachment whenever the engine isrunning (fig. 10).Don’t put pressure on the saw when reaching the end ofa cut. The pressure may cause the bar and rotating chainto pop out of the cut or kerf, go out of control and strikethe operator or some other object. If the rotating chainstrikes some other object a reactive force (see pages 2to 4) may cause the chain to strike the operator.Reactive forces during the cut, including kickbackWARNING!Reactive forces, that may occur during any cut arekickback, pushback and pull-in. Reactive forces canbe dangerous! In any chain saw, the powerful forceused to cut wood can be reversed (and work againstthe operator).If the rotating chain is suddenly stopped by contactwith any solid object like a log or branch or is pinched,the reactive forces instantly occur.These reactive forces may result in loss of controlwhich may, in turn, cause serious or fatal injury. Anunderstanding of the causes of these reactive forcesmay help you avoid loss of control.The most common reactive forces are- kickback,- pushback,- pull-in.In order to keep control of your saw, always maintaina firm foothold. Never work on a ladder, in a tree or onany other insecure support. Never use the saw aboveshoulder height (fig. 9).90This reaction can occur in a fraction of a second and undersome circumstances, cause the guide bar and chain tostrike the operator with enough force to cause severe orfatal injury. It may also occur during limbing.It also occurs when the nose of the guide bar is pinchedunexpectedly, unintentionally contacts solid material inthe wood (fig.12) or is incorrectly used to begin a plungeor boring cut.The greater the force of the kickback reaction, the moredifficult it becomes for the operator to control the saw.Kickback:Kickback occurs when the upper quadrant of the barnose contacts a solid object in the wood or is pinched(fig. 11). The reaction of the cutting force of the chaincauses a rotational force of the chain saw in the direction opposite to the chain movement, mainly in the planeof the bar. This may fling the bar in an uncontrolled arctowards the operator.2