Maintenance
62
EMU41072
Lubrication
(1) Change the gear oil. For instructions, see
page 76. Check the gear oil for the pres-
ence of water that indicates a leaky seal.
Seal replacement should be performed
by an authorized Yamaha dealer prior to
use.
(2) Lubricate all grease fittings. For further
details, see page 68.
TIP:
For long-term storage, fogging the engine
with fogging oil is recommended. Contact
your Yamaha dealer for information about
fogging oil and procedures for your outboard
motor.
EMU28446
Flushing power unit
Perform this procedure right after operation
for the most thorough flushing.
ECM01531
Do not perform this procedure while the
engine is running. The water pump may be
damaged and severe damage from over-
heating can result.
(1) After shutting off the engine, unscrew the
garden hose connector from the fitting
on the bottom cowling.
(2) Screw the garden hose adapter onto a
garden hose, which is connected to a
fresh water supply, and then connect it
to the garden hose connector.
(3) With the engine off, turn on the water tap
and let the water flush through the cool-
ing passages for about 15 minutes. Turn
off the water and disconnect the garden
hose adapter from the garden hose con-
nector.
(4) Reinstall the garden hose connector
onto the fitting on the bottom cowling.
Tighten the connector securely.
NOTICE:
Do not leave the garden hose
connector loose on the bottom cowl-
ing fitting or let the hose hang free
during normal operation. Water will
leak out of the connector instead of
1. Fitting
2. Garden hose connector
3. Garden hose adapter
1
2
3
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