9 ENGLISHDust extractionOptional accessoryUse the vacuum head for dust extraction.1Fig.20► 1. Vacuum headInstalling the vacuum head12Fig.21► 1. Support 2. Lock lever1. Raise the lock lever of the vacuum head.2. Place the vacuum head on the tool base so that itstop will be caught in the hook on the tool base.3. Insert the supports on the vacuum head into thehooks on the front of the tool base.4. Push down the lock lever onto the tool base.5. Connect a vacuum cleaner to the vacuum head.Fig.22Removing the vacuum head1. Raise the lock lever.2. Pull the vacuum head out of the tool base whileholding the supports between thumb and finger.MAINTENANCECAUTION: Always be sure that the tool isswitched off and unplugged before attempting toperform inspection or maintenance.NOTICE: Never use gasoline, benzine, thinner,alcohol or the like. Discoloration, deformation orcracks may result.Replacing carbon brushes1Fig.23► 1. Limit markCheck the carbon brushes regularly.Replace them when they wear down to the limit mark.Keep the carbon brushes clean and free to slip in theholders. Both carbon brushes should be replaced at thesame time. Use only identical carbon brushes.1. Use a screwdriver to remove the brush holdercaps.2. Take out the worn carbon brushes, insert the newones and secure the brush holder caps.1Fig.24► 1. Brush holder cap