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Inspecting idling speed
WARNING
Do not touch or remove electrical parts
when starting or during operation.
Keep hands, hair, and clothes away from
the flywheel and other rotating parts
while the engine is running.
CAUTION:
This procedure must be performed while
the outboard motor is in the water. A flush-
ing attachment or test tank can be used.
A diagnostic tachometer should be used for
this procedure. Results may vary depending
on whether testing is conducted 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.
NOTE:
Correct idling speed inspection is only possi-
ble if the engine is fully warmed up. If not
warmed up fully, the idle speed will measure
higher than normal. If you have difficulty veri-
fying the idle speed, or the idle speed requires
adjustment, consult a Outboards dealer or other
qualified mechanic.
2.
Verify whether the idle speed is set to
specification. For idle speed specifica-
tions, see page 25.
Checking wiring and connectors
Check that each grounding wire is properly
secured.
Check that each connector is engaged se-
curely.
Exhaust leakage
Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
Water leakage
Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
Checking propeller
WARNING
You could be seriously injured if the en-
gine accidentally starts when you are near
the propeller.
Before inspecting, removing, or install-
ing the propeller, remove the spark plug
caps from the spark plugs. Also, place
the shift control in neutral, turn the main
switch to "
" (off) and remove the key,
and remove the lanyard from the engine
stop switch. Turn off the battery cut-off
switch if your boat has one.
Do not use your hand to hold the propel-
ler when loosening or tightening the
propeller nut. Put a wood block between
the anti-cavitation plate and the propel-
ler to prevent the propeller from turning.
Maintenance
32
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