Maintenance
69
EMU46073
Maintenance chart 1
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
Page
20 hours
(3
months)
100 hours
(1 year)
300 hours
(3 years)
500 hours
(5 years)
Anode(s) (external)
Inspection or re-
placement as nec-
essary
82
Anode(s) (internal)
*1
Inspection or re-
placement as nec-
essary
—
Anode(s) (internal)
*2
Replacement —
Battery (electro-
lyte level, terminal)
Inspection 82
Battery (electro-
lyte level, terminal)
Fill, charging or re-
placing as neces-
sary
—
Cooling water
leakage
Inspection or re-
placement as nec-
essary
—
Cowling lock lever Inspection 47, 49
Engine starting
condition/noise
Inspection 51
Engine idle
speed/noise
Inspection 74
Engine oil Replacement 74
Engine oil filter
(cartridge)
Replacement 77
U6FN36E0.book Page 69 Tuesday, November 30, 2021 8:08 AM