Maintenance
55
tion. Water will leak out of the connector
instead of cooling the engine, which can
cause serious overheating. Be sure the
connector is tightened securely on the fit-
ting after flushing the engine.
NOTE:
●
When flushing the engine with the boat in
the water, tilting up the outboard motor un-
til it is completely out of the water will
achieve better results.
●
For cooling system flushing instructions,
see page 50.
EMU28450
Cleaning the outboard motor
After use, wash the exterior of the outboard
motor with fresh water. Flush the cooling
system with fresh water.
NOTE:
For cooling system flushing instructions, see
page 50.
EMU28460
Checking painted surface of motor
Check the motor for scratches, nicks, or flak-
ing paint. Areas with damaged paint are
more likely to corrode. If necessary, clean
and paint the areas. A touch-up paint is avail-
able from your Yamaha dealer.
EMU28478
Periodic maintenance
WARNING
EWM01071
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If you are not familiar with ma-
chine servicing, this work should be done
by your Yamaha dealer or other qualified
mechanic.
EMU28511
Replacement parts
If replacement parts are necessary, use only
genuine Yamaha parts or parts of equivalent
design and quality. Any part of inferior quality
may malfunction, and the resulting loss of
control could endanger the operator and
passengers. Yamaha genuine parts and ac-
cessories are available from your Yamaha
dealer.
EMU34150
Severe operating conditions
Severe operating conditions involve one or
more of the following types of operation on a
regular basis:
●
Operating continuously at or near maxi-
mum engine speed (rpm) for many hours
●
Operating continuously at a low engine
speed (rpm) for many hours
●
Brief periods of rapid acceleration and de-
celeration followed by engine shut off be-
fore the engine has reached proper
operating temperature
●
Frequent quick acceleration and decelera-
tion
●
Frequent shifting
●
Frequently starting and stopping the en-
gine(s)
●
Operation that fluctuates often between
light and heavy cargo loads
Outboard motors operating under any of
