Filter
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Maintenance
51
4. Reinstall the filter element in the cup.
Make sure the O-ring is in position in the
cup. Firmly screw the cup onto the filter
housing.
5. Attach the filter assembly to the bracket
so that the fuel hoses are attached to the
filter assembly.
6. Run the engine and check the filter and
lines for leaks.
EMU29041
Inspecting idling speed
WARNING
EWM00451
●
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:
ECM00490
This procedure must be performed while
the outboard motor is in the water. A
flushing 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 smooth-
ly.
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 ver-
ifying the idle speed, or the idle speed re-
quires adjustment, consult a Yamaha dealer
or other qualified mechanic.
2. Verify whether the idle speed is set to
specification. For idle speed specifica-
tions, see page 40.
EMU29050
Checking water in engine oil tank
Oil injection models
There is a water trap at the bottom of the en-
gine oil tank. If water or foreign matter is vis-
ible in this trap, consult your Yamaha dealer.
EMU29112
Checking wiring and connectors
●
Check that each grounding wire is properly
secured.
●
Check that each connector is engaged se-
curely.
EMU29120
Exhaust leakage
Start the engine and check that no exhaust
leaks from the joints between the exhaust
1. Water trap
2. Engine oil tank
2
1
ZMU01895
ZMU03915