Yamaha F150 Four Stroke Manual

General information
4

Know the marine laws and regulations
where you will be boating—and obey them.
For basic boating rules, see “Rules of the
road” on page 5.

Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating in hazardous weather.

Tell someone where you are going: leave a
Float Plan with a responsible person. Be
sure to cancel the Float Plan when you re-
turn.

Use common sense and good judgment
when boating. Know your abilities, and be
sure you understand how...

General information
5
EMU25413Label (counter rotation models)
WARNING
EWM01281
Use only a counterclockwise rotation pro-
peller with this engine.
Counterclockwise propellers are marked
with a letter “L” after the size indication.
The wrong type of propeller could cause
the boat to go in an unexpected direction,
which could lead to an accident.
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...

General information
6
Crossing: (you are traveling across the other
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 to
any vessels shown in white area (you are the
Give-Way vessel). Any vessels in the shaded
area must yield to you (they are the Give-Way
vessels). Both you and the meeting vessel
must alter course to avoid each other.
Meeting
If you are meeting another power vessel...

General information
7
vessels, the operator should sound a pro-
longed blast on the whistle (4 to 6 seconds). If
another vessel is around the bend, it too
should sound the whistle. Even if no reply is
heard, however, the vessel should still pro-
ceed around the bend with caution. If you nav-
igate such waters with your boat, you will
need to carry a portable air horn, available
from local marine supply stores.
Fishing vessel right-of-way
All vessels which are fishing with nets, lines or
trawls are...

General information
8
EMU25540
Fueling instructions
WARNING
EWM00010
GASOLINE AND ITS VAPORS ARE HIGH-
LY FLAMMABLE AND EXPLOSIVE!

Do not smoke when refueling, and keep
away 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.
ZMU01708
U63P14E0.book  Page 8  Monday, June 6, 2005  4:57 PM 

General information
9

Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags.

Do not overfill the fuel tank.

Tighten the filler cap securely after refu-
eling.

If you should swallow some gasoline, in-
hale a lot of gasoline vapor, or get gaso-
line 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...

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 elec-
tric system could perform poorly or be
overloaded, causing electric system dam-
age.
For electric start models, choose a battery
which meets the following specifications.
EMU25711Battery specifications
NOTE:
The engine cannot be started if battery volt-
age is too low.
EMU25742
Propeller selection
The...

General information
11
For instructions on propeller removal and in-
stallation, see page 55.
EMU25770
Start-in-gear protection
Yamaha outboard motors or Yamaha-ap-
proved remote control units are equipped with
start-in-gear protection device(s). This feature
permits the engine to be started only when it
is in neutral. Always select neutral before
starting the engine.
U63P14E0.book  Page 11  Monday, June 6, 2005  4:57 PM 

Basic components
12
EMU25796
Main components
NOTE:
* May not be exactly as shown; also may not be included as standard equipment on all models.
EMU26180Remote control
The remote control lever actuates both the
shifter and the throttle. The electrical switches
are mounted on the remote control box.
1. Top cowling
2. Top cowling lock lever(s)
3. Anti-cavitation plate
4. Trim tab (anode)
5. Propeller*
6. Cooling water inlet
7. Clamp bracket
8. Flushing device
9. Power trim and tilt switch
10.Remote control...

Basic components
13
EMU26190Remote control lever
Moving the lever forward from the neutral po-
sition engages forward gear. Pulling the lever
back from neutral engages reverse. The en-
gine will continue to run at idle until the lever
is moved about 35° (a detent can be felt).
Moving the lever farther opens the throttle,
and the engine will begin to accelerate.EMU26201Neutral interlock trigger
To shift out of neutral, first pull the neutral in-
terlock trigger up.
EMU26211Neutral throttle lever
To open...