Philips Norelco Shaver 4100 Series 4000 wet & dry electric shaver AT810-41 DualPrecision heads Flex & Float system 50 min shaving 1 hour charge AquaTech wet & dry technology with Aquatec - Wet or Dry shaving and Pop-up trimmer - Manual (Page 21)

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6 Separate the cutter from the comb and
clean it with the short bristled side of the
brush supplied.
Do not clean more than one cutter and comb
at a time, since they are all matching sets. If you
accidentally interchange the cutters and combs, it
could take several weeks before optimal shaving
performance is restored.
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7 Clean the inside and outside of the comb
with the brush supplied.
For optimum performance, razor cutters and
combs should be cleaned in a degreasing liquid
(e.g. Philips Norelco Shaving Head Cleaning Spray,
Model HQ110 or alcohol) and lubricated with
one drop of mineral oil (in the center of the
head). This helps prevent wear of the shaving
heads.
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8 Replace the set back into the Razor Head
Assembly.
Make sure that the two pointy edges of the
head fit exactly into the recesses.
9 Repeat the process for the other two sets
of cutters and combs.
10 Replace the frame and turn the lock
clockwise until it locks into place.
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