Replacement parts System outer foil: once every year Inner blades: once every two years Replacement part is available at your dealer or Service Centre. System outer foil and inner WES9013 blades System outer foil WES9087 Inner blades WES9068 Lubrication oil WES003P Lubrication 1 Apply one drop of lubrication oil to each of the system outer foils. (Fig. 7) 2 Turn on the power and allow to run it for approximately 5 seconds.