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5 - With the hands, put gently the retainer on the focus group. The pin holes of the retainer must be on top.
6 - Put the external part of the focus group spanner 66067115AA. Rotate anti-clockwise the external part of the spanner so the spanner pins are
into the retainer pin holes. Continue to rotate anti-clockwise the external part of the spanner so the retainer falls in the correct thread position.
7 - Tighten the retainer with the external part of the spanner. Do not apply high torque and tighten the retainer just in contact.
8 - Untighten the internal part of the spanner and pull out the whole spanner by the internal part of the spanner.
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