Yamaha F50 Manual

							 
Basic components 
25 
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 
 
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.
ZMU01741 
						

							 
Basic components 
26
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 
give false readings. 
EMU26720 
Fuel warning indicator 
If the fuel level decreases to one segment,
the fuel level warning segment will begin toblink.
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.
ZMU01745
 
1. Fuel level warning segment
1. Low battery indicator 
						

							 
Basic components 
27 
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. 
1. Set button
2. Mode button
2
1
ZMU05415
 
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)
1. Set button
2. Mode button
2
3 145
67
8
ZMU05416
2 1
ZMU05417 
						

							 
Basic components 
28
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 willstart 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
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. 
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
1452
3
6879ZMU05418
ZMU05430
ZMU05431 
						

							 
Basic components 
29 
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 76 of this
manual to drain the water from the fuel filter.
Get back to the port soon and consult aYamaha 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
soon and consult a Yamaha dealer immedi-
ately.
ZMU05421
ZMU05422
ZMU05423
ZMU05424
ZMU05425 
						

							 
Basic components 
30
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.
ZMU05426
ZMU05427
 
1. Set button
2. Mode button
ZMU05428
2
1
ZMU05432 
						

							 
Basic components 
31
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. Speedometer
2. Fuel meter
3. Multifunction display
1. Set button
2. Mode button
1. Speedometer
2. Fuel meter
3. Multifunction display
1
2
3
ZMU05433
2 1
ZMU05434
12
3
ZMU05435
 
1. Set button
2. Mode button
2
1
ZMU05436 
						

							 
Basic components 
32
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 speedometer unit shows various kinds
of information according to the setting made
using the “” (set) and “” (mode) but-
tons. In addition, the speedometer can show
the desired unit of measurement such as km/
h, mph, or knots. For details, see the at- 
tached operation manual. 
EMU31630 
Fuel management meter 
This meter has functions of fuel flow meter,
total consumption display, fuel economy dis-
play, and remaining fuel display.
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 fuel management meter shows various
kinds of information when the operator uses
the “” (set) and “” (mode) buttons.
For details, see the attached operation man- 
ual. 
1. Speedometer
2. Fuel meter
3. Multifunction display
1
2
3
ZMU05437
 
1. Set button
2. Mode button
1. Fuel flow meter
2. Multifunction display
2
1
ZMU05438
1
2
ZMU05439 
						

							 
Basic components 
33 
EMU26801 
Warning system
CAUTION:
 
ECM00090  
Do not continue to operate the engine if a
warning device has activated. Consult
your Yamaha dealer if the problem can- 
not be located and corrected. 
EMU26816 
Overheat warning 
This engine has an overheat warning device.
If the engine temperature rises too high, the
warning device will activate. 
Activation of warning device 
 
The engine speed will automatically de-
crease to about 2000 r/min. 
 
If equipped with an overheat warning indi-
cator, it will light or blink. 
 
The buzzer will sound (if equipped on the
tiller handle, remote control box, or main
switch panel).If the warning system has activated, stop the
engine and check the cooling water inlet for
clogging. 
EMU30167 
Low oil pressure warning 
If the oil pressure drops too low, the warning
device will activate. 
Activation of warning device 
 
The engine speed will automatically de-
crease to about 2000 r/min. 
 
If equipped with a low oil pressure warning
ZMU04746
ZMU01757
ZMU03604
ZMU04587 
						

							 
Basic components 
34 
indicator, it will light or blink. 
 
The buzzer will sound (if equipped on the
tiller handle, remote control box, or main
switch panel).
If the warning system has activated, stop the
engine as soon as it is safe to do so. Check
the oil level and add oil as needed. If the oil
level is correct and the warning device does
not switch off, consult your Yamaha dealer.
CAUTION:
 
ECM00100  
Do not continue to run the engine if the
low oil pressure warning indicator is on. 
Serious engine damage could occur.
ZMU03609