Maintenance
58
7. Fill the tank with fresh water to above the
level of the anti-cavitation plate.
CAUTION:
ECM00300
Do not run the engine without supplying
it with cooling water. Either the engine
water pump will be damaged or the en-
gine will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water passag-
es.
CAUTION:
ECM00290
If the fresh water level is below the level
of the anti-cavitation plate, or if the water
supply is insufficient, engine seizure may
occur.
8. Cooling system flushing is essential to
prevent the cooling system from clog-
ging up with salt, sand, or dirt. In addi-
tion, fogging of the engine is mandatory
to prevent excessive engine damage
due to rust. Perform the flushing and
fogging at the same time.
WARNING
EWM00090
●
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.
9. Run the engine at a fast idle for 10–15
minutes in neutral position.
10. Just prior to turning off the engine, quick-
ly spray “Yamaha Stor-Rite Engine
Fogging Oil” alternately into each carbu-
retor or the fogging hole of the silencer
cover, if equipped. When properly done,
the engine will smoke excessively and
almost stall.
11. Remove the outboard motor from the
test tank. For further details, see page
56.
12. Drain the cooling water completely out
of the motor. Clean the body thoroughly.
13. Install the silencer cover/cap and top
cowling.
EMU28402
Lubrication
1. Install the spark plug(s) and torque to
proper specification. For information on
spark plug installation, see page 66.
2. Change the gear oil. For instructions,
see page 74. Inspect the 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.
3. Grease all grease fittings. For further de-
tails, see page 65.
NOTE:
For long-term storage, fogging the engine
with oil is recommended. Contact your
Yamaha dealer for information about fogging
oil and procedures for your engine.
1. Water surface
2. Lowest water level
ZMU02051
1
2
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©2019 Yamaha Motor Corporation, U.S.A.
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