Yamaha F150 Four Stroke Manual

Basic components
14
NOTE:
The neutral throttle lever will operate only
when the remote control lever is in neutral.
The remote control lever will operate only
when the neutral throttle lever is in the closed
position.
EMU26232Free accelerator
To open the throttle without shifting into either
forward or reverse, push the free accelerator
button and move the remote control lever.
NOTE:

The free accelerator button can only be
used when the remote control lever is in the
neutral position.

After the button...

Basic components
15
When constant speed is desired, tighten the
adjuster to maintain the desired throttle set-
ting.
EMU25990Engine stop lanyard switch
The lock plate must be attached to the engine
stop switch for the engine to run. The lanyard
should be attached to a secure place on the
operator’s clothing, or arm or leg. Should the
operator fall overboard or leave the helm, the
lanyard will pull out the lock plate, stopping ig-
nition to the engine. This will prevent the boat
from running away under...

Basic components
16
With the main switch in the “” (start) po-
sition, the starter motor turns to start the en-
gine. When the key is released, it returns
automatically to the “” (on) position.
EMU26141Power trim and tilt switch on remote 
control or tiller handle
The power trim and tilt system adjusts the out-
board motor angle in relation to the transom.
Pressing the switch “” (up) trims the out-
board motor up, then tilts it up. Pressing the
switch “” (down) tilts the outboard motor
down and trims it...

Basic components
17
NOTE:
For instructions on using the power trim and
tilt switch, see page 36.
EMU26161Power trim and tilt switches (twin 
binnacle type)
The power trim and tilt system adjusts the out-
board motor angle in relation to the transom.
Pushing the switch “” (up) trims the out-
board motor up, then tilts it up. Pressing the
switch “” (down) tilts the outboard motor
down and trims it down. When the switch is re-
leased, the outboard motor will stop in its cur-
rent position.
NOTE:

On the...

Basic components
18
EMU26340Tilt support lever for power trim and 
tilt or hydro tilt model
To keep the outboard motor in the tilted up po-
sition, lock the tilt support lever to the clamp
bracket.
EMU26382Top cowling lock lever (pull up type)
To remove the engine top cowling, pull up the
lock lever(s) and lift off the cowling. When in-
stalling the cowling, check to be sure it fits
properly in the rubber seal. Then lock the
cowling by moving the lever(s) downward.
EMU26460Flushing device
This device is...

Basic components
19
NOTE:
The water separator and engine trouble warn-
ing indicators only operate when the engine is
equipped with the appropriate functions.
EMU26521Low oil pressure warning indicator
If oil pressure drops too low, the warning indi-
cator will start to blink. For further information,
see page 26.
CAUTION:
ECM00020

Do not continue to run the engine if the
low oil pressure warning indicator is on
and the engine oil level is lower. Serious
engine damage will occur.

The low oil pressure...

Basic components
20
NOTE:
After the main switch is first turned on, all seg-
ments of the display come on as a test. After
a few seconds, the gauge will change to nor-
mal operation. Watch the gauge when turning
on the main switch to make sure all segments
come on.
NOTE:
The speedometer displays km/h, mph, or
knots, according to operator preference. Se-
lect the desired unit of measurement by set-
ting the selector switch on the back of the
gauge. See the illustration for settings.
EMU26620Trim meter...

Basic components
21

Changing the display format
Pressing the “” (mode) button chang-
es the display format in the following pat-
tern:
Total hours→Trip hours→Display off

Resetting the trip hours
Simultaneously pressing the “” (set) and
“” (mode) buttons for more than 1 sec-
ond while the trip hours are displayed re-
sets the trip counter to 0 (zero).
NOTE:
The total number of hours the engine has
been run cannot be reset.
EMU26690Trip meter
This gauge displays the distance the boat has
traveled since...

Basic components
22
NOTE:
The fuel level reading can be affected by the
position of the sensor in the fuel tank and the
attitude of the boat in the water. Operation
with bow-up trim or continuous turning can
give false readings.
EMU26720Fuel warning indicator
If the fuel level decreases to one segment, the
fuel level warning segment will begin to blink.
CAUTION:
ECM00880
Do not continue to operate the engine with
full throttle if a warning device has activat-
ed. Get back to the port within trolling en-...

Basic components
23
mal operation. Watch the gauge when turning
on the main switch to make sure all segments
come on.
EMU26750Fuel flow meter
The fuel flow meter displays the amount of
fuel flow over a one hour period, at the current
rate of engine operation.
If twin engines are installed on your boat, the
fuel flow meter displays the total fuel flow of
both the port and starboard engines. It also
displays “” (for port and starboard).
Use the “” (set) button to rotate the fuel flow
display in the...