Kowa K9L48B, Service Manual, Page: 45 / 60

GG-09001 Edition 1.3
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9-4 Cleaning field lens
①
Using an Allen wrench, loosen
2
retaining screws
. If these screws are tightly locked, apply a
few drops of the cleaning solution to loosen the screws.
②
Using the handle, remove the field lens. Follow the steps described in “
9-1 Preparing for lens
cleaning
” and “
9-2 Lens cleaning procedures
”.
③
When you complete the lens cleaning, position the field lens and tighten
2
retaining screws using
an Allen wrench.
④
When it seems that dusts exist on the field lens, it is very likely that dusts also exist on the
protective glass above the field lens. Clean the protective glass as necessary.