Mercury V-6 series

68
CA740
SCHEDULED MAINTENANCE THAT SHOULD BE PERFORMED
BY A DEALER
NOTE: Only perform maintenance which applies to your particular
power package.
Task Interval
Steering Head and Remote
Control - Inspect and lubricate.
End of first boatin
g
season and
Carburetor (If Equipped) -
Inspect and adjust.
End
of
first
boating
season
and
thereafter, every 100 hours of
operation or once yearly,
hi h fi t
Throttle Body (EFI Models) -
Inspect.
yy,
whichever occurs first.
Fuel Filter - Replace.
Quicksilver MerCathode
System - Test output.
Closed Cooling Coolant - Test
for alkalinity.
Once a Year
Heat Exchanger - Clean
seawater section.
Drive Unit Bellows and
Clamps - Inspect.
Engine Alignment - Check.
End of first boating season and
thereafter,
Saltwater Use: Every 300
Engine Coupling Universal Joint
Shaft Splines - Lubricate.
Saltwater Use: Every 300
hours of operation or once
yearly, whichever occurs first.
Freshwater Use: Every 300
Universal Joint Cross Bearings-
Inspect.
Freshwater
Use:
Every
300
hours of operation or once every
two years, whichever occurs
first.
Closed Cooling Coolant -
Replace.
Every Five Years
1
1
Only if Extended Life 5/100 Ethylene Glycol Antifreeze/Coolant is used.
If any non-compatible coolant is added to this coolant, coolant must be
changed every 2 years or 400 hours, whichever occurs first. All coolants
other than Extended Life 5/100 Ethylene Glycol Antifreeze/Coolant must
be changed every 2 years or 400 hours, whichever occurs first.