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Maintenance
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EMU34446
Maintenance chart 1
T
IP:
● Refer to the sections in this chapter for explanations of each owner-specific action.
● The maintenance cycle on these charts assume usage of 100 hours per year and regular
flushing of the cooling water passages. Maintenance frequency should be adjusted when op-
erating the engine under adverse conditions such as extended trolling.
● Disassembly or repairs may be necessary depending on the outcome of maintenance
checks.
● Expendable or consumable parts and lubricants will lose their effectiveness over time and
through normal usage regardless of the warranty period.
● When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should
be flushed with clean water after each use.
The “” symbol indicates the check-ups which you may carry out yourself.
The “” symbol indicates work to be carried out by your Yamaha dealer.
Item Actions
Initial Every
20 hours
(3 months)
100 hours
(1 year)
300 hours
(3 years)
500 hours
(5 years)
Anode(s) (external)
Inspection or replace-
ment as necessary
Anode (cylinder head
exhaust passage)
Inspection or replace-
ment as necessary
Anodes (cylinder head,
cylinder block, cylinder
block thermostat por-
tion, oil cooler cover,
exhaust guide)
Replacement
Battery (electrolyte lev-
el, terminal)
Inspection
Battery (electrolyte lev-
el, terminal)
Fill, charging or replac-
ing as necessary
Cooling water leakage
Inspection or replace-
ment as necessary
Cowling lock lever Inspection
Engine starting condi-
tion/noise
Inspection
Engine idle
speed/noise
Inspection
Engine oil Replacement
Engine oil filter (car-
tridge)
Replacement
Fuel filter (can be dis-
assembled)
Inspection or replace-
ment as necessary
U6CB10E0.book Page 69 Wednesday, September 30, 2009 9:49 AM