Hitachi G18MR Instruction Manual - Page 12

English 6. Mounting the wheel guard Be sure to mount the wheel guard at an angle that will protect the operator's body from injury by a broken wheel piece. [Installing and adjusting the wheel guard] ⅜ Open the lever and insert the locating pin Screw Set Piece of wheel guard, bringing it into line with the across flats of packing ground. Locating Pin ⅜ Then, turn the wheel guard to a desired position (for use). ⅜ Close the lever and fix it. If and when Lever required, carry out adjustments by tightening or loosening the screw. ⅜ If the lever does not move smoothly, apply some lubricating oil to the sliding section between the set piece and the lever. Fasten the wheel guard at the position where the across flats of the wheel guard positioning pin and packing ground are Wheel Guard aligned (the position where the wheel guard is inserted), but do not use it. WARNING: If the wheel guard is not attached properly, a broken wheel may result in and cause death or serious injury. Packing Gland Fig. 2 Across Flats 7. Thoroughly check that the depressed center wheel is free of cracks, splits and other abnomalities before mounting. Make sure it is firmly clamped and has been properly mounted. Refer to page 14 of this manual for Depressed Center Wheel Assembly and Disassembly. 8. Test the grinder before using Before actually beginning the grinding work, test the grinder by first clearing the area of all other personnel. Make sure the wheel guard is in place and that you are wearing eye protection. Turn the grinder "on", and make sure the grinder runs smoothly and shows no abnormalities. Duration of the trial run is as follows: When depressed center wheel is replaced 3 minutes or more When starting daily work 1 minute or more 9. Use only properly rated depressed center wheels Use only depressed center wheels rated at 6600 RPM or more. Using a depressed center wheel rated less can lead to wheel disintegration during operation and cause serious bodily injury. 10. Check the push button Make sure that the push button is disengaged by pushing push button two or three times before turning on the grinder. (Fig. 5) 12