Maintenance
75
2.
Spray the outboard motor exterior with
“Yamaha Silicone Protectant”.
NOTICE:
Do not spray when the engine is run-
ning. Also, do not spray near the si-
lencer or into the engine. Otherwise
the engine could be damaged.
[ECM01403]
3.
Wax the cowling with a non-abrasive
wax such as “Yamaha Silicone Wax”.
EMU40964
Flushing cooling water passage
Perform this procedure right after operation
for the most thorough flushing.
NOTICE
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.
Disconnect the garden hose connector
from the fitting on the bottom cowling.
2.
Connect the garden hose to the garden
hose connector.
3.
With the engine off, turn on the water
supply and let the water flush through
the cooling water passages for about 15
minutes.
4.
Turn off the water supply, and then dis-
connect the garden hose from the gar-
den hose connector.
5.
Connect the garden hose connector to
the fitting on the bottom cowling and
tighten it securely.
NOTICE:
If the gar-
den hose connector is not properly
connected, cooling water can leak out
and the engine can overheat during
operation.
[ECM01802]
TIP:
When flushing the cooling water passages
with the boat in the water, tilting the outboard
motor up until it is completely out of the water
will achieve better results.
EMU44342
Cleaning the outboard motor
When cleaning the outboard motor, the top
cowling must be installed.
1.
Wash the exterior of the outboard motor
using fresh water.
NOTICE:
Do not
spray water into the air intake.
[ECM01841]
1. Fitting
2. Garden hose connector
2 1
ZMU08101
1. Garden hose
2. Garden hose adapter (commercially avail-
able)
3. Garden hose connector
2
3
1
ZMU08102
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2019 Yamaha Motor Corporation, U.S.A.
