Maintenance
51
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 disconnect the gar-
den hose from the garden hose connector.
5.
Connect the garden hose connector to the fitting on the
bottom cowling and tighten it securely.
NOTICE:
If the
garden hose connector is not properly connected,
cooling water can leak out and the engine can over-
heat 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.
6.
To prevent water from freezing in the cooling water pas-
sages, tilt the outboard motor down and wait at least 3
minutes or disconnect the garden hose connector to
drain the water.
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 wa-
ter.
NOTICE:
Do not spray water into the air intake.
[ECM01841]
2.
Drain the cooling water completely out of the outboard
motor. Clean the body thoroughly.
EMU28463
Checking painted surface of outboard motor
Check the outboard motor for scratches, nicks, or flaking
paint. Areas with damaged paint are more likely to corrode.
If necessary, clean and paint the areas. Touch-up paint is
available from your Yamaha dealer.
EMU44950
Periodic maintenance
WARNING
EWM01872
These procedures require mechanical skills, tools, and
supplies. If you do not have the proper skills, tools, or
supplies to perform a maintenance procedure, have a
Yamaha dealer or other qualified mechanic do the work.
The procedures involve disassembling the motor and
exposing dangerous parts. To reduce the risk of injury
from moving, hot, or electrical parts:
Turn off the engine and keep the key(s) and engine
shut-off cord (lanyard) with you when you perform
maintenance unless otherwise specified.
The power trim and tilt switches operate even when
the ignition key is off. Keep people away from the
switches whenever working around the motor. When
the motor is tilted, keep away from the area under it or
between it and the clamp bracket. Be sure no one is in
this area before operating the power trim and tilt
mechanism.
Allow the engine to cool before handling hot parts or
fluids.
Always completely reassemble the motor before oper-
ation.
Maintenance, replacement, or repair of the emission
control devices and systems may be performed by any
marine engine repair establishment or individual. All
warranty repairs, however, including those to the emis-
sion control system, must be performed by an autho-
rized Yamaha marine dealership.
For North America:
A service manual is available for purchase through your
Yamaha dealer for owners who have the mechanical skills,
tools, and other equipment necessary to perform mainte-
nance not covered by this owner’s manual.
1. Fitting
2. Garden hose connector
1. Garden hose
2. Garden hose adapter (commercially avail-
able)
3. Garden hose connector
2
1
2
3
1
1. Air intake
1
1
U6GR30E0.book Page 51 Thursday, April 12, 2018 9:28 AM
©
2019 Yamaha Motor Corporation, U.S.A.
