Yamaha F50 Manual

 
General information 
5 
EMU25465 
Caution labels 
EMU25473 
Label
CAUTION:
 
ECM01191  
Transport and store the engine only as
shown. Otherwise, engine damage could 
result from leaking oil. 
EMU25500 
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 agen-...

 
General information 
6 
sels. 
EMU25520 
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 ves-
sel head-on) 
Crossing: 
 (you are traveling across the oth-
er vessel’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...

 
General information 
7 
EMU25530 
Other special situations 
There are three other rules you should be
aware of when driving your boat around oth-
er 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 that may obstruct the view of other wa-
ter vessels, the operator should sound a pro-
longed blast on the whistle (4 to 6 seconds).
If...

 
General information 
8 
EMU25540 
Fueling instructions
WARNING
 
EWM00010  
GASOLINE AND ITS VAPORS ARE HIGH-
LY FLAMMABLE AND EXPLOSIVE! 
 
Do not smoke when refueling, and keepaway from sparks, flames, or other
sources of ignition. 
 
Stop engine before refueling. 
 
Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat. 
 
Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
ZMU01708 

 
General information 
9 
dry rags. 
 
Do not overfill the fuel tank. 
 
Tighten the filler cap securely after re-
fueling. 
 
If you should swallow some gasoline,
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention. 
 
If any gasoline spills onto your skin, im-
mediately wash with soap and water.
Change clothing if gasoline spills on it. 
 
Touch the fuel nozzle to the filler open-
ing or funnel to help prevent electro- 
static sparks.
CAUTION:
 
ECM00010...

 
General information 
10 
EMU25700 
Battery requirement
CAUTION:
 
ECM01060  
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. 
EMU25711 
Battery specifications
NOTE:
 
The engine cannot be started if battery volt- 
age is too low. 
EMU25742 
Propeller...

 
General information 
11
NOTE:
 
Select a propeller which will allow the engine
to reach the middle or upper half of the oper-
ating range at full throttle with the maximum
boat load. If operating conditions such as
light boat loads then allow the engine r/min to
rise above the maximum recommended
range, reduce the throttle setting to maintain 
the engine in the proper operating range.
For instructions on propeller removal and in-
stallation, see page 66. 
EMU25770 
Start-in-gear protection 
Yamaha...

 
12 
Basic components 
EMU25799 
Main components
NOTE:
 
* May not be exactly as shown; also may not be included as standard equipment on all mod- 
els. 
F50, T50, F60, T60
2
3
4
TRIP TIME BATT
Km/h
knot
mph
km
mileSPEEDYAMAHA
set
mode
14
1
9
11
6
7
5 10
8
1215 13
1816 17
19 20
ZMU05090
 
1. Top cowling
2. Water separator
3. Top cowling lock lever
4. Drain screw
5. Anode
6. Anti-cavitation plate
7. Trim tab (anode)
8. Propeller
9. Cooling water inlet
10. Anode(s)
11. Clamp bracket
12. Tilt support...

 
Basic components 
13 
EMU25802 
Fuel tank 
If your model was equipped with a portable
fuel tank, its function is as follows.
WARNING
 
EWM00020  
The fuel tank supplied with this engine is
its dedicated fuel reservoir and must not
be used as a fuel storage container. Com-
mercial users should conform to relevant
licensing or approval authority regula- 
tions. 
EMU25830 
Fuel joint 
This joint is used to connect the fuel line.
1
46 3
2
5
ZMU05429
 
1. Tachometer unit (Square type)*
2. Tachometer unit...

 
Basic components 
14 
EMU25841 
Fuel gauge 
This gauge is located on either the fuel tank
cap or on the fuel joint base. It shows the ap-
proximate amount of fuel remaining in the
tank. 
EMU25850 
Fuel tank cap 
This cap seals the fuel tank. When removed,
the tank can be filled with fuel. To remove the
cap, turn it counterclockwise. 
EMU25860 
Air vent screw 
This screw is on the fuel tank cap. To loosen
the screw, turn it counterclockwise. 
EMU26180 
Remote control 
The remote control lever actuates...