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Maintenance
49
● Keep hands, hair, and clothes away 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 flush-
ing 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 conduct-
ed 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 smoothly.
2. Once the engine has warmed up, verify
whether the idle speed is set to specifica-
tion. For idle speed specifications, see
page 12. If you have difficulty verifying
the idle speed, or the idle speed requires
adjustment, consult a Yamaha dealer or
other qualified mechanic.
EMU29113
Checking wiring and connectors
● Check that each connector is engaged se-
curely.
● Check that each ground lead is properly se-
cured.
EMU32112
Checking propeller
WARNING
EWM01881
You could be seriously injured if the en-
gine accidentally starts when you are near
the propeller. Before inspecting, remov-
ing, 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
U63V1EE0.book Page 49 Tuesday, March 3, 2009 10:50 AM