Yamaha F115 Owners Manual

							 
Basic components 
25 
ting the selector switch on the back of the 
gauge. See the illustration for settings. 
EMU26610 
Trim meter 
This gauge shows the trim angle of your out-
board motor.
NOTE:
 
Memorize the trim angles that work best for
your boat under different conditions. Adjust
the trim angle to the desired setting with the 
power trim and tilt switch. 
EMU26620 
Trim meter (digital type) 
This meter shows the trim angle of your out-
board motor.
NOTE:
 
 
Memorize the trim angles that work best
for your boat under different conditions.
Adjust the trim angle to the desired using
the power trim and tilt switch. 
 
If the trim angle of your motor exceeds the
trim operating range, the top segment on 
the trim meter display will blink. 
EMU26650 
Hour meter (digital type) 
This meter shows the number of hours the
engine has been run. It can be set to show
the total number of hours or the number of
hours for the current trip. The display can
also be turned on and off. 
 
Changing the display format 
 
Pressing the “” (mode) button chang-
es the display format in the following pat-
tern: 
 
Total hours 
→ 
Trip hours 
→  
Display off 
1. Cap
2. Selector switch (for speed unit)
3. Selector switch (for fuel sensor)
ZMU04581
ZMU01740
ZMU01741 
						

							 
Basic components 
26 
 
Resetting the trip hours 
 
Simultaneously pressing the “” (set)
and “” (mode) buttons for more than
1 second while the trip hours are displayed
resets the trip counter to 0 (zero).
NOTE:
 
The total number of hours the engine has 
been run cannot be reset. 
EMU26690 
Trip meter 
This gauge displays the distance the boat
has traveled since the gauge was last reset.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (trip). To reset the trip meter
to zero, press the “” (set) and “”
(mode) buttons at the same time.
NOTE:
 
 
The trip distance is shown in kilometers or
miles depending upon the unit of measure-
ment selected for the speedometer. 
 
The trip distance is kept in memory by bat-
tery power. The stored data will be lost if 
the battery is disconnected. 
EMU26700 
Clock 
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (time). To set the clock, be
sure the gauge is in the “” (time) mode.Press the “” (set) button; the hour display
will begin blinking. Press the “” (mode)
button until the desired hour is displayed.
Press the “” (set) button again, the minute
display will begin blinking. Press the “”
(mode) button until the desired minute is dis-
played. Press the “” (set) button again to
start the clock.
NOTE:
 
The clock operates on battery power. Dis-
connecting the battery will stop the clock. 
Reset the clock after connecting the battery. 
EMU26710 
Fuel gauge 
The fuel level is indicated by eight segments.
When all segments are showing, the fuel
tank is full.
CAUTION:
 
ECM00860  
The Yamaha fuel tank sensor differs from
conventional sensors. Incorrectly setting
the selector switch on the gauge will give
false readings. Consult your Yamaha
dealer on how to correctly set the selec- 
tor switch.
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 
						

							 
Basic components 
27 
give false readings. 
EMU26720 
Fuel 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
activated. Get back to the port within troll- 
ing engine speed. 
EMU26730 
Low battery voltage warning 
indicator 
If battery voltage drops, the display will auto-matically turn on and begin to blink.
CAUTION:
 
ECM00870  
Get back to the port soon if a warning de-
vice has activated. For charging the bat- 
tery, consult your Yamaha dealer. 
EMU26740 
Fuel management meter 
The fuel management meter shows the state
of the fuel consumption while the engine is
running.
NOTE:
 
After the main switch is first turned on, all 
1. Fuel level warning segment
ZMU01745
 
1. Low battery indicator
1. Fuel flow meter
2. Fuel consumption meter / Fuel economy 
meter / Twin engine speed synchronizer
3. Water separator warning indicator (operates 
only if the sensor has been installed)
ZMU01748
1
2
3 
						

							 
Basic components 
28 
segments of the display come on as a test.
After a few seconds, the gauge will change
to normal operation. Watch the gauge when
turning on the main switch to make sure all 
segments come on. 
EMU26750 
Fuel flow meter 
The fuel flow meter displays the amount of
fuel flow over a one hour period, at the cur-
rent 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 following order: 
 
Press the “” (set) button once to display
the fuel flow of the starboard engine. An
“” (for starboard) will also be displayed. 
 
Press the “” (set) button a second time
to display the fuel flow of the port engine.
A “” (for port) will also be displayed. 
 
Press the “” (set) button a third time to
return the display to the total fuel flow of
both engines. “” (for port and starboard)
will also be displayed to indicate both the
port and starboard engines.
NOTE:
 
 
The fuel flow meter displays gallons/hour
or liters/hour according to operator prefer-
ence. Select the desired unit of measure-ment by setting the selector switch on the
back of the gauge during installation. 
 
The fuel consumption meter and fuel
economy meter will indicate the same unit 
of measurement. 
EMU26760 
Fuel consumption meter 
This gauge displays the total amount of fuel
consumed since the gauge was last reset.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to total “” (total). To reset the total
fuel consumption to zero, press the “”
(set) and “” (mode) buttons at the same
time. 
EMU26770 
Fuel economy 
This gauge displays the distance per liter or
gallon when cruising, and is only for refer-
ZMU01749
 
1. Selector switch
ZMU01751 
						

							 
Basic components 
29 
ence use by the operator.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (economy).
NOTE:
 
If twin engines are installed on your boat, the
gauge will only display the total fuel economy 
of both engines.
NOTE:
 
 
Fuel consumption varies greatly with boat
design, weight, propeller used, engine trim
angle, sea conditions (including wind), and
throttle position. Fuel consumption also
varies slightly with the type of water (salt,
fresh, and contaminate levels), air temper-
ature and humidity, cleanliness of the boat
bottom, engine mounting height, skill of
the operator, and individual gasoline for-
mulation (winter or summer fuel and
amount of additives). 
 
The Yamaha digital speedometer and fuel
management meter calculates speed,
miles traveled, and fuel economy by water
movement at the stern of the boat. This
distance can vary greatly from the actual
distance traveled because of water cur-
rents, sea swells, and the condition of the
water speed sensor (partially plugged or
damaged). 
 
Individual engines may slightly vary in theirfuel consumption due to manufacturing
variations. These variations can be even
greater if the engines are of different year
models. In addition, variations in propel-
lers, even of the same basic dimensions of
the same design, can also cause a slight 
variation in fuel consumption. 
EMU26780 
Twin-engine speed synchronizer 
This gauge displays the difference in engine
speed (r/min) between the port and star-
board engines for reference purposes when
synchronizing the two engines’ speeds.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (synchronizer).
ZMU01752
 
1. Port engine speed is higher
2. Port engine speed is slightly higher
3. Engine speed is synchronized evenly 
between port and starboard engines
4. Starboard engine speed is slightly higher
ZMU01753
ZMU01754
1
2
3
4
5 
						

							 
Basic components 
30
NOTE:
 
If the two engines’ speeds are not synchro-
nized while cruising, they can be synchro- 
nized by adjusting trim angle or throttle. 
EMU31640 
Command link multifunction meters 
Command link multifunction meters have 6
kinds of meter units; tachometer unit (square
or round types), speedometer unit (square
type), speed & fuel meter unit (square or
round types), and fuel management meter
(square type). The indicator system is slight-
ly different between the round and square
types. Check the model and type of your unit
carefully. This manual describes mainly the
warning indicators. For more details on set-
ting meters or changing indicator systems,
see the attached operation manual. 
EMU31680 
Tachometer unit 
The tachometer shows the engine revolu-
tions per minute. It has functions of trim
meter, adjusting trolling speed, cooling wa-
ter/engine temperature display, battery volt-
age display, total hour/trip hour display, oil
pressure display, water detection warning,
engine trouble warning, and periodic mainte-
nance notification. If optional sensors are
connected to the unit, cooling water pressure
display will be available. For the optional
sensor, consult your Yamaha dealer. The ta-
chometer unit is available in round or square
types. Check your tachometer unit type. 
5. Starboard engine speed is higher
1. Set button
2. Mode button
1. Tachometer
2. Trim meter
3. Multifunction display
4. Cooling water pressure
5. Cooling water/engine temperature
6. Water detection warning indicator
7. Battery voltage
8. Oil pressure (4-stroke models)
2
1
ZMU05415
2
3 145
67
8
ZMU05416 
						

							 
Basic components 
31
NOTE:
 
The tachometer unit shows various kinds of
information according to the setting made
using the “” (set) and “” (mode) but-
tons. For details, see the attached operation 
manual. 
Preoperation checks 
Place the gear shift lever in neutral and turn
the main switch to “” (on). After all the dis-
plays come on and the total hour display
comes on, the gauge will change to normal
operation. If the buzzer sounds and the wa-
ter separator warning indicator blinks, con-
sult your Yamaha dealer immediately.
NOTE:
 
To stop the buzzer, press the “” (set) or 
“” (mode) button. 
Low oil pressure warning 
When the engine oil pressure drops too low,
the low oil pressure warning indicator will
start to blink, and the engine speed will auto-
matically decrease to about 2000 r/min.
Stop the engine immediately if the buzzer
sounds and the low oil pressure warning in-
dicator blinks. Check the engine oil quantity
and replenish oil if necessary. If the warning 
1. Set button
2. Mode button
1. Tachometer
2. Trim meter
3. Multifunction display
4. Water detection warning indicator
5. Engine trouble warning/maintenance indica-
tor
6. Cooling water pressure
7. Oil pressure (4-stroke models)
8. Cooling water/engine temperature
9. Battery voltage
2 1
ZMU05417
1452
3
6879ZMU05418
ZMU05430
ZMU05431 
						

							 
Basic components 
32 
device has activated while the appropriate
engine oil quantity is maintained, consult
your Yamaha dealer.
CAUTION:
 
ECM01600  
Do not continue to run the engine if the
low oil pressure warning device has acti- 
vated. Serious engine damage will occur.
Overheat warning 
If the engine temperature rises too high while
cruising, the overheat warning indicator will
start to blink. The engine speed will automat-
ically decrease to about 2000 r/min.
Stop the engine immediately if the buzzer
sounds and the overheat warning device has
activated. Check the cooling water inlet for
clogging.
CAUTION:
 
ECM01590  
 
Do not continue to run the engine if the
overheat warning indicator blinks. Seri-ous engine damage will occur. 
 
Do not continue to operate the engine if
a warning device has activated. Con-
sult your Yamaha dealer if the problem 
cannot be located and corrected.
Water separator warning 
This indicator will blink when water has accu-
mulated in the water separator (fuel filter)
while cruising. In such an event, stop the en-
gine immediately and see page 78 of this
manual to drain the water from the fuel filter.
Get back to the port soon and consult a
Yamaha dealer immediately.
CAUTION:
 
ECM00910  
Gasoline mixed with water could cause 
damage to the engine.
Engine trouble warning 
This indicator will blink when the engine mal-
functions while cruising. Get back to the port
ZMU05421
ZMU05422
ZMU05423
ZMU05424 
						

							 
Basic components 
33 
soon and consult a Yamaha dealer immedi-
ately.
CAUTION:
 
ECM00920  
In such an event, the engine will not oper-
ate properly. Consult a Yamaha dealer 
immediately.
Low battery voltage warning 
When the battery voltage drops, the low bat-
tery voltage warning indicator and the bat-
tery voltage value will start to blink. Get back
to the port soon if the low battery voltage
warning device has activated. For charging
the battery, consult your Yamaha dealer. 
EMU31610 
Speed & fuel meter unit 
This unit shows the boat speed and has the
functions of fuel meter, total fuel consump-
tion display, fuel economy display, fuel flow
display, and system voltage display. If op-
tional sensors are connected to the unit, trip
display, water surface temperature display,
depth display, and clock will be available. For
the optional sensor, consult your Yamaha
dealer. The speed & fuel meter unit is avail-
able in round or square types. Check your
speed & fuel meter unit type.
ZMU05425
ZMU05426
ZMU05427
ZMU05428 
						

							 
Basic components 
34
NOTE:
 
After the main switch is first turned on, all the
displays come on as a test. After a few sec-
onds, the gauge will change to normal oper- 
ation.
NOTE:
 
The speed & fuel meter unit shows various
kinds of information according to the setting
made with the “” (set) and “” (mode)
buttons. For details, see the attached opera- 
tion manual. 
EMU31620 
Speedometer unit 
This unit shows the boat speed and has
functions of fuel meter and system voltage
display. If optional sensors are connected to
the unit, trip display, water surface tempera-
ture display, depth display, and clock will be
available. For the optional sensor, consult
your Yamaha dealer. 
1. Set button
2. Mode button
1. Speedometer
2. Fuel meter
3. Multifunction display
1. Set button
2. Mode button
2
1
ZMU05432
1
2
3
ZMU05433
2 1
ZMU05434
 
1. Speedometer
2. Fuel meter
3. Multifunction display
12
3
ZMU05435