Scheduled Maintenance That Can Be Performed By An Owner/Operator; Scheduled Maintenance That Should Be Done By Dealer - Mercury MerCruiser MCM 454 Mag MPI Service Manual

MAINTENANCE

Scheduled Maintenance That Can Be Performed By An Owner/Operator

HORIZON MODELS
Engine Oil - Check Level
Transmission Fluid - Check Level
Closed Cooling - Check Level
Power Package Surfaces - Spray with
Quicksilver Corrosion Guard

Scheduled Maintenance That Should Be Done by Dealer

HORIZON MODELS
Transmission Fluid - Change
Crankcase Oil and Oil Filter - Change
Flame Arrestor - Clean And Inspect
Throttle and Shift Linkage - Lubricate
Fuel Filter - Change
Heat Exchanger - Clean Seawater Section
Positive Crankcase Ventilation Valve -
Replace
Serpentine Belt - Check Tension
Closed Cooling Coolant - Replace
Power Package Surfaces - Spray with
Quicksilver Corrosion Guard
Engine Alignment - Check
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Only if Extended Life Coolant is used. If any other coolant is added to the Extended Life Coolant, coolant must
be changed every 2 years or 400 hours of operation, whichever occurs first. All coolants other than Extended
Life Coolant must be changed every 2 years or 400 hours of operation, whichever occurs first.
Index Index
Page 1B-6
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Recommended Maintenance
Recommended Maintenance
SERVICE MANUAL NUMBER 23
Interval
Before Every Use
Saltwater Use: Yearly
Interval
Yearly Yearly
Every Three Years y
Every Five Years or 1000 Hours of
Operation,Whichever Occurs First
Yearly If Used In Saltwater
Per Boat Builder Recommendations
90-861326--1 MARCH 1999
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