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Maintenance
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EMU34445
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(s) (cylinder
head, thermostat cov-
er)
Inspection or replace-
ment as necessary
Anodes (exhaust cover,
cooling water passage
cover, Rectifier Regula-
tor cover)
Replacement
Cooling water leakage
Inspection or replace-
ment as necessary
Cowling lock lever Inspection
Engine starting condi-
tion/noise
Inspection
Engine idling
speed/noise
Inspection
Fuel filter (can be dis-
assembled)
Inspection or replace-
ment as necessary
Fuel line(High pres-
sure)
Inspection
Fuel line(High pres-
sure)
Inspection or replace-
ment as necessary
Fuel line(Low pres-
sure)
Inspection
Fuel line(Low pres-
sure)
Inspection or replace-
ment as necessary
U63V1EE0.book Page 45 Tuesday, March 3, 2009 10:50 AM