CAUTION : • 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 chemicals detergents to clean the O-ring. When such chemicals are used, it is likely that the O-ring will be damaged or that its deterioration will be accelerated.

Install the O-ring.

Confirm that no foreign matter is attached, apply a thin coat of the accessory grease to the O-ring, and fit the O-ring into the groove. At this time, confirm that the O-ring does not stick out from the groove.

How to Apply Grease to the O-ring

1Apply the specified grease

2Spread the grease over the O-ring.

Check that there

3is no damage or irregularities on the O-ring.

Apply the grease

4to the O-ring contact surface.

Make sure there is no dirt on your fingers or on the O-ring; then squeeze about 5 mm of grease onto your fingertip.

Using two fingers and a thumb, spread the grease over the O-ring while rubbing it in. Use caution not to squeeze or pull the O-ring too hard.

Once the grease has permeated throughout the O-ring, check it for damage or irregularities (both visually and by touch). If you notice any abnormalities, replace the O-ring with a new one.

Use any residual grease on your fingertips to clean and lubricate the Oring contact surface on the front lid.

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