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Maintenance
56
from the flywheel and other rotating
parts while the engine is running.
NOTICE
ECM00490
This procedure must be performed while
the outboard motor is in the water. A
flushing attachment or test tank can be
used.
If the boat is not equipped with a tachometer
for the outboard motor, use a diagnostic ta-
chometer for this procedure. Results may
vary depending on whether testing is con-
ducted with the flushing attachment, in a test
tank, or with the outboard motor in the water.
1. Start the engine and allow it to warm up
fully in neutral until it is running smooth-
ly.
2. Once the engine has warmed up, verify
whether the idle speed is set to specifi-
cation. For idle speed specifications, see
page 9. If you have difficulty verifying the
idle speed, or the idle speed requires ad-
justment, consult a Yamaha dealer or
other qualified mechanic.
EMU29114
Inspecting wiring and connectors
●
Inspect that each connector is engaged
securely.
●
Inspect that each ground lead is properly
secured.
EMU32112
Checking propeller
WARNING
EWM01881
You could be seriously injured if the en-
gine accidentally starts when you are
near the propeller. Before inspecting, re-
moving, or installing the propeller, place
the shift control in neutral, turn the main
switch to “
” (off) and remove the key,
and remove the clip from the engine shut-
off switch. Turn off the battery cut-off
switch if your boat has one.
Do not use your hand to hold the propeller
when loosening or tightening the propeller
nut. Put a wood block between the anti-cavi-
tation plate and the propeller to prevent the
propeller from turning.
Checkpoints
●
Check each of the propeller blades for ero-
sion from cavitation or ventilation, or other
damage.
●
Check the propeller shaft for damage.
●
Check the splines for wear or damage.
●
Check for fish line tangled around the pro-
peller shaft.
ZMU02087
ZMU01897
69R-9-2A-1E0.book 56 ページ 2010年2月3日 水曜日 午後5時18分