Ryobi TR45K English Manual - Page 12
Direction Of Feed And Thrust - guide
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OPERATION DIRECTION OF FEED AND THRUST See Figures 6 and 7. The trimmer motor and cutter revolve in a clockwise direction. This gives the tool a slight tendency to twist in your hands in a counterclockwise direction, especially when the motor starts. Feed the trimmer into the workpiece from left to right. When fed from left to right, the rotation of the cutter pulls the trimmer against the workpiece. If fed in the opposite direction, the rotation forces of the spinning cutter will tend to throw the trimmer away from the workpiece, causing kickback. This could result in loss of control of the trimmer. Because of the extremely high speed of cutter rotation during a proper feeding operation, there is very little kickback to contend with under normal conditions. However, should the cutter strike a knot, hard grain, foreign object, etc. that would affect the normal progress of the cutting action, there will be a slight kickback. Kickback could be sufficient to spoil the trueness of your cut if you are not prepared. Such a kickback is always in the direction opposite the direction of cutter rotation. To guard against kickback, plan your set-up and direction of feed so that you will always be thrusting the tool-to hold it against whatever you are using to guide the cut-in the same direction that the leading edge of the cutter is moving. The thrust should be in a direction that keeps the sharp edges of the cutter continuously biting straight into new (uncut) wood. TRIM END GRAINS FIRST TRIMMER FEED DIRECTION BIT ROTATION TRIMMER FEED DIRECTION GUIDE OUTSIDE BIT ROTATION Fig. 6 THRUST ROTATION GUIDE GUIDE INSIDE ROTATION GUIDE FEED FEED TRIMMER FEED DIRECTION THRUST Fig. 7 Page 12