417�2�5 ROTOR BLADES:The rotor and ledger blades need to be sharp for the Chipper to perform as expected. Periodic inspectionis recommended. Keep the blades sharp to reduce the amount of power required during operation.Watch the sharpness of the blades when processing material with a lot of sand, soil or dirt mixed withit. Reverse or sharpen the blades if the cutting edge becomes dull.The rotor is equipped with 4 blades spaced evenly to keep the rotor in balance. If one needs to bechanged, the one opposite should also be changed.It is recommended that the rotor blades be removed from the rotor when sharpening. Always sharpenthe blades at a 45° angle to provide the best cutting effect as it meets the stationary blade. Be sure totighten the blade mounting bolts to their specified torque when re-installing the blades to the rotor.1. Ensure the machine is set in Safe Condition (See Section 7.2).2. Remove the bolt that secures theupper rotor housing, and carefullyopen the rotor housing.3. With care, slowly rotate chipper rotorplate until the rotor lock lines up withlock hole in the rotor plate.4. Engage the rotor lock, and ensureit snaps into the lock hole. Do notallow the rotor lock to snap into thechipper blade slot, damage to theblade may result.5. Remove the bolts that hold the rotor bladeto the rotor, remove the blade.6. Rotate the blade and reinstall or replacewith new or re-sharpened blade.7. Ensure the blade is properly oriented, withthe leading edge out. The blade is designedto fit into the rotor one way only. Seediagram for proper installation.8. Tighten bolts as specified in the torquechart.9. Repeat steps for remaining blades.Rotor BladeBoltsLeading EdgeProper orientationof Rotor BladeRotor LockCaution: Avoid Serious InjuryThe rotor is very heavy, turnrotor slowly and be aware ofhand positioning: avoid getting pinched orwedged between the lower rotor housingand rotor.RotorWARNINGMachine is shown with guardremoved or rotor cover openedfor illustrative purposesonly� Do not operate machinewith guard removed or coveropened�Rotor Blade: depending on your modelthe rotor blade may have 4 mounting holes.The removal replacement procedure is thesame for both.