Any white or gray particles on the screen is a harmless, non-irritant lubricant. Grasp front & back of foil carrier assembly & pull upward. Grasp each cutter between thumb & forefinger & pull upward. Snap each new cutter assemblies into top of drive shaft. Do not push on ends of cutters as this may bend them & reduce effectiveness. Replace the new foil carrier assembly.
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Interceptor F5 with Shaving Technology 3 Stage Interceptor Cutting System Cuts Long Hairs to Shave Close Pivot & Flex Technology ...