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Maintenance
52
CAUTION:
ECM00490
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.
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.
N
O
TE:
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 Yamaha dealer or other
qualified mechanic.
2. Verify whether the idle speed is set to
specification. For idle speed specifica-
tions, see page 40.
EMU29083
Changing engine oil
WARNING
EWM00760
● Avoid draining the engine oil immediate-
ly after stopping the engine. The oil is
hot and should be handled with care to
avoid burns.
● Be sure the outboard motor is securely
fastened to the transom or a stable
stand.
CAUTION:
ECM01240
Change the engine oil after the first 10
hours of operation, and every 100 hours or
at 6-month intervals thereafter. Otherwise
the engine will wear quickly.
NOTE:
Change the engine oil when the oil is still
warm.
The engine oil can be extracted with an oil
changer (recommended), or drained by re-
moving the oil drain screw.
Extracting the oil with an oil changer (normal
oil change)
1. Put the outboard motor in an upright po-
sition (not tilted).
2. Pull out the dipstick and use the oil
changer to extract the oil.
U69J14E0.book Page 52 Friday, March 12, 2004 10:20 AM