Hitachi Sander/Polisher11Amp Instruction Manual - Page 14

English MAINTENANCE AND INSPECTION WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection. 1. Inspecting the screws Regularly inspect all screws and ensure that they are properly tightened. Should any of the screws be loosened, retighten them immediately. WARNING: Using this electronic sander polisher with loosened screws is extremely dangerous. 2. Inspecting the carbon brushes (Fig. 7) The motor employs carbon brushes which are consumable parts. Replace the carbon brush with a new one when it becomes worn to its wear limit. Always keep carbon brushes clean and ensure that they slide freely within the brush holders. Wear limit 43 No. of carbon Fig. 7 CAUTION: Using this electronic sander polisher with a carbon brush which is worn in excess of the wear limit will damage the motor. NOTE: Use HITACHI carbon brush No. indicated in Fig. 7. ⅜ Replacing carbon brushes: Remove the brush caps (Fig. 1) with a slotted screwdriver. The carbon brushes can then be easily removed. 3. Cleaning lock pin section If the lock pin section becomes dirty, clean it at once. 4. Service and repairs All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AUTHORIZED SERVICE CENTER, ONLY. 5. Service parts list CAUTION: Repair, modification and inspection of Hitachi Power Tools must be carried out by an Hitachi Authorized Service Center. This Parts List will be helpful if presented with the tool to the Hitachi Authorized Service Center when requesting repair or other maintenance. In the operation and maintenance of power tools, the safety regulations and standards prescribed in each country must be observed. 14