2015 YAMAHA V1 engine

Description
20
EJU40303
Watercraft glossary
Trolling speed
“Trolling” is the lowest maneuvering speed. You are applying little or no throttle. The water-
craft is down in the water, and there is no wake.
Sub-planing speed
“Sub-planing” is a medium speed. The bow of the watercraft is slightly up from the water sur-
face, but you are still traveling through the water. There is a wake.
Planing speed
“Planing” is a faster speed. The watercraft is more level and is skimming on top of the water.
There is a wake.
Bow
The front end of the watercraft.
Stern
The rear end of the watercraft.
Starboard
The right side of the watercraft when facing forward.
Port
The left side of the watercraft when facing forward.
Bilge water
Water that has collected in the engine compartment.
Yamaha Engine Management System (YEMS)
YEMS is an integrated, computerized management system that controls and adjusts ignition
timing, fuel injection, engine diagnostics, and the off-throttle steering (OTS) system.
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Description
23
5
4 1
23
9
1011 7
68
1Start switch (page 25)
2Engine shut-off switch (page 25)
3Clip (page 25)
4Engine shut-off cord (lanyard) (page 25)
5Engine stop switch (page 25)
6Glove compartment (page 37)
7Multifunction information center (page 29)
8Rearview mirror
9Beverage holder (V1 Sport) (page 38)
10Shift lever (V1 Sport) (page 28)
11Throttle lever (page 26)
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Description
24
Engine compartment
6
789
12
345
1Water separator (page 27)
2Fuel tank
3Air filter case
4Battery (page 50)
5Flushing hose connector
6Electrical box
7Spark plug/Spark plug cap/Ignition coil
8Oil tank filler cap/Dipstick
9Oil tank
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Control function operation
25
EJU31026
Watercraft control functionsEJU31153Engine stop switch “ ”
The engine stop switch (red button) stops the
engine when the switch is pushed.
EJU31164Engine shut-off switch “ ”
The engine shut-off switch automatically
stops the engine when the clip, on the end of
the engine shut-off cord (lanyard), is removed
from the switch, such as if the operator falls
off the watercraft.
Insert the clip under the engine shut-off
switch before starting the engine.
When the engine is not running, remove the
clip from the engine shut-off switch to pre-vent accidental starting or unauthorized op-
eration by children or others.
EJU43560Start switch “ ”
NOTICE
ECJ01311
Do not run the engine over 4000 r/min on
land. Also, do not run the engine for more
than 15 seconds without supplying water,
otherwise the engine could overheat.
The start switch (green button) starts the en-
gine when the switch is pushed.
Release the start switch as soon as the en-
gine starts to run. If the engine does not start
in 5 seconds, release the start switch, wait 15
seconds, and then try again. NOTICE: Never
push the start switch while the engine is
running. Do not operate the start switch
for more than 5 seconds, otherwise the
battery will be discharged and the engine
1Engine stop switch
1Engine shut-off switch
2Clip
3Engine shut-off cord (lanyard)
1
STOP
312
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Control function operation
26
will not start. Also, the starter motor could
be damaged.
[ECJ01041]
The engine will not start under any of the fol-
lowing conditions:
Clip is removed from the engine shut-off
switch.
Throttle lever is squeezed.EJU31212Throttle lever
The throttle lever increases the engine speed
when the lever is squeezed.
The throttle lever returns automatically to its
fully closed (idle) position when released.
EJU31262Steering system
By turning the handlebars in the direction you
wish to travel, the angle of the jet thrust noz-zle is changed, and the direction of the water-
craft is changed accordingly.
Since the strength of the jet thrust determines
the speed and degree of a turn, throttle must
always be applied when attempting a turn,
except at trolling speed.
This model is equipped with the Yamaha En-
gine Management System (YEMS) that in-
cludes an off-throttle steering (OTS) system.
It will activate at planing speeds should you
attempt to steer the watercraft after releasing
the throttle lever. The OTS system assists in
turning by continuing to supply some thrust
while the watercraft is decelerating, but you
can turn more sharply if you apply throttle
while turning the handlebars. The OTS sys-
tem does not function below planing speeds
or when the engine is off. Once the engine
slows down, the watercraft will no longer turn
in response to handlebar input until you apply
throttle again or you reach trolling speed.
1Start switch
1Throttle lever
START
1
1
1Handlebar
2Jet thrust nozzle
2
1
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Control function operation
27
EJU35975Cooling water pilot outlet
When the engine is running, some of the
cooling water that is circulated in the engine
is discharged from the cooling water pilot
outlet.
There is a cooling water pilot outlet on the
port (left) side of the watercraft. To check for
proper operation of the cooling system, make
sure that water is being discharged from the
cooling water pilot outlet. If water is not being
discharged from the outlet, stop the engine
and check the jet intake for clogging. (See
page 82 for information on the jet intake.)
TIP:
It will take about 60 seconds for the water
to reach the outlet after the engine is start-
ed.
Water discharge may not be constant
when the engine is running at idling speed.
If this occurs, apply a little throttle to make
sure that water discharges properly.
EJU40323Water separator
The water separator prevents water from en-
tering the fuel tank by collecting any water
that has entered the fuel tank breather hose if
the watercraft was capsized.If water has collected in the water separator,
drain it by loosening the drain screw.
To drain water from the water separator:
(1) Place a drain pan or dry cloth under the
water separator.
(2) Gradually loosen the drain screw to drain
the water. Catch the draining water in the
drain pan or soak it up with the dry cloth
so that it does not spill into the engine
compartment. If any water spills into the
watercraft, be sure to wipe it up with a
dry cloth.
(3) Securely tighten the drain screw until it
stops.1Cooling water pilot outlet
1
1Water separator
2Drain screw
1
2
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Instrument operation
29
EJU43570
Multifunction information
center
The multifunction information center displays
various watercraft information.
Multifunction information center initial op-
eration
When the multifunction information center is
activated, all of the display segments come
on. After 2 seconds, the warning indicators in
the information display go off, and then the
center starts to operate normally.
If only the multifunction information center is
activated, the “WARNING” indicator light
blinks once.
Multifunction information center standby
state
If the multifunction information center does
not receive any operation input within 25 sec-
onds after the engine stops, the center will
turn off and enter a standby state. When the
engine is started again, the displays return to
their state before the center turned off, and
then the center starts to operate normally.
EJU35025Information display
The information display shows watercraft op-
erating conditions.
EJU31504Speedometer
The speedometer shows the watercraft
speed against water.
By switching the display units, the speed can
be shown in kilometers per hour “km/h” or
miles per hour “mph”.
TIP:
“mph” is selected as the display unit at the
Yamaha factory.
1Select button
2Information display
3“WARNING” indicator light
123
1Tachometer
2Speedometer
3Hour meter/voltmeter
4Fuel level meter
5Check engine warning indicator
6Engine overheat warning indicator
7Oil pressure warning indicator
8Fuel level warning indicator
1Speedometer
1234
8765
1
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Instrument operation
30
To switch the speedometer display units:
Push the select button for at least 1 second,
within 10 seconds after the multifunction in-
formation center is activated. The speedom-
eter display changes.
EJU31464Tachometer
The tachometer shows the engine speed.
The outer numbers × 1000 r/min and display
segments on the meter show the engine
speed.
EJU31556Hour meter/voltmeter
The hour meter/voltmeter has both an hour
meter function and a voltmeter function. By
switching the meter, it can be used as either
an hour meter or a voltmeter.
TIP:
The hour meter is selected at the Yamaha
factory.
Hour meter
The hour meter shows the total number of
hours that the engine has been running since
the watercraft was new.
TIP:
The elapsed time will be kept even if the bat-
tery terminals have been disconnected.
To switch to the hour meter from the voltme-
ter:
Push the select button for at least 1 second
after the multifunction information center is
activated for more than 10 seconds. The dis-
play switches to the hour meter from the volt-
meter.
1Speedometer
2Select button
1Tachometer
1
2
1
1Hour meter/voltmeter
1Hour meter
2Select button
1
1
2
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