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Maintenance
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-hp model: Warm the engine with the
throttle in the start position or less. If the
outboard is mounted on a boat, be sure
the boat is tightly moored.
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 47.
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.
1. Water trap
2. Engine oil tank
59
2
1
ZMU01895
EMU29111
Checking wiring and connectors
Check that each grounding wire is properly
G
secured.
Check that each connector is engaged se-
G
curely.
EMU29120
Exhaust leakage
Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EMU29130
Water leakage
Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EMU29153
Checking power trim and tilt system
EWM00430
WARNING
Never get under the lower unit while it
G
is tilted, even when the tilt support lever
is locked. Severe injury could occur if
the outboard motor accidentally falls.
Make sure no one is under the outboard
G
motor before performing this test.
1.
Check the power trim and tilt unit for any
sign of oil leaks.
2.
Operate each of the power trim and tilt
switches on the remote control and en-
gine bottom cowling (if equipped) to
ZMU04007
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