E-31:•When a mechanical pencil or a similar other sharp object
is used to remove the O-ring or to clean the inside of the
O-ring groove, the Case and the O-ring may be
damaged and water leakage may be caused.
•When the O-ring is checked with the fingertips, take care
not to stretch the O-ring.
•Never use alcohol, thinner, benzene or similar solvents
or chemical detergents to clean the O-ring. When such
chemicals are used, it is to be feared that the O-ring will
be damaged or that its deterioration will be accelerated.
CAUTION
Using a clean cloth free of fibers, dirt, etc., a piece of lint-free tissue
paper or a soft toothbrush, remove any foreign matter attached to the
grooves of the O-rings. Also remove sand and dirt particles attached to
the O-ring contact surfaces on the case.