Maintenance
36
EMU34449
Maintenance chart 1
TIP:
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
operating 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
Cooling water leakage
Inspection or replace-
ment as necessary
Engine starting condi-
tion/noise
Inspection
Engine idle
speed/noise
Inspection
Fuel filter (inside built-
in fuel tank)
Inspection and clean-
ing as necessary
Fuel line
Inspection
Fuel line
Inspection or replace-
ment as necessary
Fuel/engine oil leakage
Inspection
Gear oil
Replacement
Greasing points
Greasing
Impeller/water pump
housing
Inspection or replace-
ment as necessary
Impeller/water pump
housing
Replacement
Propeller/propeller
nut/cotter pin
Inspection or replace-
ment as necessary
Spark plug(s)
Inspection or replace-
ment as necessary
U6GD22E0.book Page 36 Friday, January 13, 2023 10:22 AM
