MAINTENANCE SERVICE MANUAL NUMBER 23
Page 1B-6 90-861326--1 MARCH 1999
Scheduled Maintenance That Can Be Performed By An Owner/Operator
HORIZON MODELS
Recommended Maintenance Interval
Engine Oil - Check Level
Transmission Fluid - Check Level Before Every Use
Closed Cooling - Check Level
Power Package Surfaces - Spray with
Quicksilver Corrosion Guard
Saltwater Use: Yearly
Scheduled Maintenance That Should Be Done by Dealer
HORIZON MODELS
Recommended Maintenance Interval
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
Every Three Years
Serpentine Belt - Check Tension
Closed Cooling Coolant - Replace
Every Five Years or 1000 Hours of
Operation,Whichever Occurs First
1
Power Package Surfaces - Spray with
Quicksilver Corrosion Guard
Yearly If Used In Saltwater
Engine Alignment - Check Per Boat Builder Recommendations
1
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.
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