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* Check brushes periodically to prevent damage to armature. * Changing the blade Disconnect the power supply and put on the blade protection before changing the blade. Use work gloves for your own safety. Loosen the screws of the blade mounting, remove the blade and replace it. Make sure that the sharp bevel of the blade always shows upwards and the blade is fitting in exactly the position of the old one. 4.1 Genuine Spare Parts Spare parts and accessories are manufactured uniquely for the Duro®