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Mercury 305 CID - Maintenance Schedules; Maintenance Intervals; Alpha Models

Mercury 305 CID
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MAINTENANCE - 1B-190-823225--1 1096
Maintenance Schedules
Maintenance Intervals
Maintenance intervals and the tasks to be performed, as shown in this current schedule, or as found in a
previously printed schedules, are generally based on an average boating application and environment.
However, individual operating habits and personal maintenance preferences can have an impact on the
suggested intervals. In consideration of these factors, MerCruiser has adjusted some maintenance intervals and
corresponding tasks to be performed. In some cases, this may allow for more individual tasks to be performed
in a single visit to the serving dealer, rather than multiple visits. Therefore, it is very important that the boat owner
and servicing dealer discuss the current Maintenance Schedule and develop appropriate maintenance intervals
to coincide with the individual operating habits, environment, and maintenance requirements.
Alpha Models
SCHEDULED MAINTENANCE THAT CAN BE PERFORMED BY OWNER/OPERATOR
NOTE: Only perform maintenance which applies to your particular power package.
Task Interval
Engine Crankcase Oil - Check level
Wkl
Closed Cooling Coolant - Check level
Wkl
Power Steering Fluid - Check level
Wkl
Stern Drive Unit Oil - Check level
Wkl
Battery - Check level and inspect for damage
Weekly
Fuel Pump Sight Tube (If so Equipped) - Check that
no fuel is present
W
ee
kl
y
Power Trim Pump Oil - Check level
Anodes - Inspect for erosion
Gear Housing Water Pickups - Check for marine
growth or debris
Drive Belt(s) - Inspect condition and check tension
Every 100 hours of operation or 120 days.
Whichever occurs first.
Propeller Shaft - Lubricate
Saltwater Use: Every 50 hours of operation or 60
days Whichever occurs first
Power Package - Exterior Surfaces - Spray with rust
preventative
days
,
Whichever
occurs
first
.
Freshwater Use: Every 100 hours of operation or
120 days, Whichever occurs first.
Power Package Exterior Surfaces - Clean and paint Once a year
Cooling System - Flush seawater section Saltwater Use: After every use.

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