Makita BDF451 Owners Manual - Page 8

MAINTENANCE CAUTION: • Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance. Replacing carbon brushes 006258 1. Limit mark Use pliers to remove the carbon brush caps of the carbon brushes. Take out the worn carbon brushes, insert the new ones and replace the carbon brush caps in reverse. 006731 1. Carbon brush cap 1 1 Replace when they wear down to the limit mark. Keep the carbon brushes clean and free to slip in the holders. Both carbon brushes should be replaced at the same time. Use only identical carbon brushes. Use a screwdriver to remove two screws then remove the rear cover. 006729 1. Rear cover 1 2. Screws 2 Raise the arm part of the spring and then place it in the recessed part of the housing with a slotted bit screw- driver of slender shaft or the like. 006730 1 1. Arm 2. Spring 3. Recessed part 23 Make sure that the carbon brush caps have fit into the holes in brush holders securely. 006304 1 1. Hole 2. Carbon brush cap 2 Reinstall the rear cover and tighten two screws securely. After replacing brushes, insert the battery cartridge into the tool and break in brushes by running tool with no load for about 1 minute. Then check the tool while running and electric brake operation when releasing the switch trigger. If electric brake is not working well, ask your local Makita service center for repair. To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts. ACCESSORIES CAUTION: • These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose. If you need any assistance for more details regarding these accessories, ask your local Makita Service Center. • Drill bits • Screw bits • Hook • Grip assembly • Various type of Makita genuine batteries and chargers 8