EOTech 553 User Manual
Page 27
CAUTION – There are 80 minutes of total windage and elevation (40 minutes in each
direction) in the Reflex Sight. There are 80
1
/
2
min. clicks of adjustment from optical
center to the limits of windage and elevation adjustment. To establish optical/mechanical
zero, adjust turrets to limit, then return 80 clicks (do this for both the elevation and the
windage). When encountering an increase in resistance in adjustments, the end of the
adjustment range has been reached. DO NOT turn the adjustments any farther, serious
damage may occur to the sight.
2.2
Preventive Maintenance Checks and Services (PMCS)
OPERATOR LEVEL MAINTENANCE
The operator is limited to replacing batteries and cleaning the battery compartment and outer
housing surfaces of the sight.
REPLACING BATTERIES
See the heading ‘Replacing Batteries’ under section Description of Components, Controls, and
Indicators. Do not use deteriorated or corroded batteries. Inspect batteries for rips, tears, or
cuts in the housing. If there is any exposed, internal content of the battery, it could potentially
effect the operation of the sight.
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