Yamaha 115 C Service Manual

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EMB40010
BASIC BOATING RULES
(Rules of the road)
Just as there are rules which apply when
you are driving on streets and high ways,
there are waterway rules which apply when
you are driving your boat. These rules are
used internationally, and are also enforced
by the United States Coast Guard and local
agencies. You should be aware of these
rules, and follow them whenever you
encounter another vessel on the water.
Several sets of rules prevail according to
geographic location, but are all basically...

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RULES WHEN ENCOUNTERING
VESSELS
There are three main situations which you
may encounter with other vessels which
could lead to a collision unless the Steering
Rules are followed:
Meeting
(you are approaching another vessel
head-on)
Crossing
(you are travelling across the other ves-
sel’s path)
Overtaking
(you are passing or being passed by
another vessel)
In the following illustration, your boat is in
the center. You should give the right-of-way
to any vessels shown in white area (you are
the...

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way until you are clear of it. Likewise, if
another vessel is passing you, you should
maintain your speed and direction so that
the other vessel can steer itself around you.
OTHER SPECIAL SITUATIONS
There are three other rules you should be
aware of when driving your boat around
other vessels.
Narrow Channels and Bends
When navigating in narrow channels, you
should keep to the right when it is safe and
practical to do so. If the operator of a
power-driven vessel is preparing to go
around a bend...

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Remember, markings may vary by geo-
graphic location. Always consult local boat-
ing authorities before driving your boat in
unfamiliar waters.
11
A
11
Proceeding toward head
of navigation from seaward
CAN  BUOY
Odd number.  Leave to port.
OR SECONDARY CHANNEL BUOYS
STARTS NEW NUMBERING SYSTEM
old new
C   1
NUN BUOY
Even number.  Leave to starboard N     2
BUOY
COLOR CODE
BLACK
RED
GREEN
 A

  2

 1 
  3
 4 
 5 
  7N   2   6C  1
RB    L
RG    Lor
SECONDARY CHANNEL
MAIN CHANNEL
oldnew
222
A
L
L
Odd...

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EMU00016
FUELING INSTRUCTIONS
w
GASOLINE AND ITS VAPORS ARE HIGH-
LY FLAMMABLE AND EXPLOSIVE!
8Do not smoke when refueling, and
keep away from sparks, flames, or
other sources of ignition.
8Stop engine before refueling.
8Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat.
8Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags.
8Do not overfill the fuel tank.
8Tighten the filler cap securely after
refueling.
8If you should swallow some...

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EMU01804
GASOLINE
If knocking or pinging occurs, use a differ-
ent brand of gasoline or premium unlead-
ed fuel.
EMU00027
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing
methanol. Gasohol containing ethanol
can be used if ethanol content does not
exceed 10% and the fuel meets minimum
octane ratings. Gasohol containing
methanol is not recommended by Yama-
ha because it can cause fuel system dam-
age or engine performance problems.
EMU19570
ENGINE OIL
Use...

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EMU01775
BATTERY REQUIREMENT
cC
Do not use a battery that does not meet
the specified capacity. If a battery which
does not meet specifications is used, the
electric system could perform poorly or
be overloaded, causing electric system
damage.
For electric start models, choose a battery
which meets the following specifications.
EMU01860
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Minimum cold cranking amps
(CCA/SAE): 380 amps at -18°C (-0.4°F)
Minimum marine cranking amps
(MCA/ABYC): 502 amps at 0°C (32°F)
Minimum reserve capacity...

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Yamaha outboard motors are fitted with
propellers chosen to perform well over a
range of applications, but there may be
uses where a propeller with a different
pitch would be more appropriate. For a
greater operating load, a smaller-pitch
propeller is more suitable as it enables
the correct engine speed to be main-
tained. Conversely, a larger-pitch pro-
peller is more suitable for a smaller oper-
ating load.
Yamaha dealers stock a range of pro-
pellers, and can advise you and install a
propeller on...

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EMU01209
START-IN-GEAR PROTECTION
Yamaha outboard motors or Yamaha
approved remote control units are
equipped with start-in-gear protection
device(s). This feature permits the engine
to be started only when it is Neutral.
Always select Neutral before starting the
engine.
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