The ND250 uses a specialized Quartz Halogen bulb which is extremely efficient,
but which requires special handling. Touching the glass surface with bare
skin deposits oils which may cause the bulb to fail prematurely. If the
glass surface is ever touched by bare skin, clean it with alcohol or window
cleaner and allow it to dry fully before installing.
Remove rubber lens guard.
Using a fine screwdriver or other
fine instrument, remove the “o-ring” between the yellow light body and
the lens. Be careful not to damage it.
Remove the lens by unscrewing
Using a Phillips screwdriver,
remove the 2 screws attaching the reflector to the spacer below it. Be
careful not to scratch the reflector.
Detach the wires to the bulb by
gently pulling the connections apart.
Lay the reflector open face down,
remove the Phillips head screw located beside the bulb, and pull the bulb
Insert the new bulb into the reflector,
being careful never to touch it’s glass surface (see “NOTE ON BULB”), and
re-install screw holding bulb to reflector.
Re-attach wires at connectors.
Re-install reflector to spacer
with the 2 Phillips head screws.
Install the large “o-ring” to
threaded end of the body as close to the “on-off” switch as possible.
Re-install the lens and tighten
firmly by hand until it just begins to squeeze the large “o-ring” installed
in Step 10 above.
Re-install rubber lens guard,
taking care to seat the ribs on the lens into the slots on the inside wall
of the lens guard.
Test the light for proper function.