2021 YAMAHA SUPERJET Owners Manual

Description
18
1
237
46
5
1Fire extinguisher holder (page 29)
2 Start switch
3 Throttle lever
4 Clip (page 20)
5 Engine stop/“L-MODE” switch (page 20)
6 Engine shut-off cord (lanyard) (page 20)
7 Engine shut-off switch (page 20)
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Description
19
Engine compartment
1
2
3
4
5
6
1Oil tank filler cap/Dipstick (page 33)
2 Fuel tank
3 Water separator (page 22)
4 Flushing hose connector (page 57)
5 Spark plug/Ignition coil
6 Battery (page 42)
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Control function operation
20
EJU31027
Watercraft control functionsEJU45552Engine stop/“L-MODE” switch “ ”
The engine stop/“L-MODE” switch (red but-
ton) stops the engine when the switch is
pushed. You can also activate L-MODE.
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.
EJU45561Start switch “ ”ECJ01361
Do not run the engine for more than 15
seconds on land 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
1 Engine stop/“L-MODE” switch
1 Clip
2 Engine shut-off switch
3 Engine shut-off cord (lanyard)
1
1
2
3
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Control function operation
21
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.
EJU35934Steering 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.
The angle of the jet thrust nozzle can be ad-
justed to suit operator preference. (See page
64 for information on adjusting the jet thrust
nozzle angle.)
1
Start switch
1 Throttle lever
1
1
1Handlebar
2 Jet thrust nozzle
1
2
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Control function operation
22
EJU31273Steering pole
The steering pole can be moved up or down
to change the height of the handlebars.
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 72 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 thewater 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
2 Drain screw
2
1
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Watercraft operation
23
EJU40003
Watercraft operation modes
EJU45572L-MODE
The L-MODE is a function that limits the max-
imum engine speed to approximately 85% of
the maximum engine speed in the normal
mode.
TIP:
The L-MODE can only be activated when the
engine is stopped.
Activating and deactivating the L-MODE
Activation of the L-MODE will be confirmed
by the “L-MODE” indicator light. (See page
24 for information on the indicator lights.)
To activate the L-MODE:
(1) Briefly push the start switch to turn the power on.
(2) Push the engine stop/“L-MODE” switch three times. (3) “L-MODE” indicator light comes on and
the L-MODE is activated.
To deactivate the L-MODE:
To deactivate the L-MODE, follow the same
procedure as for activating the L-MODE.
1 Engine stop/“L-MODE” switch
1
1“L-MODE” indicator light
1
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Instrument operation
24
EJU45701
Meter
When the meter is activated, all of the fuel
level meter segments and all indicators come
on. After a few seconds, the fuel level meter
displays the remaining amount of fuel and all
indicators go off.
EJU45620Fuel level meter
The fuel level meter shows the amount of fuel
remaining in the fuel tank. The amount of re-
maining fuel is shown using four display seg-
ments, which disappear one at a time as the
fuel level decreases.
TIP:
The accuracy of the fuel level meter varies
depending on the operating conditions. Use
this function as a reference only.
EJU45631Fuel level warning
If the fuel remaining in the fuel tank drops to
about 6.0 L (1.59 US gal, 1.32 Imp.gal), the
lowest fuel level segment blinks.
If the fuel level warning is activated, refill the
fuel tank as soon as possible. (See page 31
for information on filling the fuel tank.)
EJU45641Indicator lights
EJU45650Oil pressure warning
If the oil pressure drops significantly, the
“WARNING” indicator light blinks. At the
1“WARNING” indicator light
2 “L-MODE” indicator light
3 Fuel level meter
1 Fuel level meter
1
2 3
1
1
“WARNING” indicator light
2 “L-MODE” indicator light
1
2
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Instrument operation
25
same time, the maximum engine speed is
limited.
If the oil pressure warning is activated, imme-
diately reduce the engine speed, return to
shore, and then check the engine oil level.
(See page 33 for information on checking the
engine oil level.) If the oil level is sufficient,
have a Yamaha dealer check the watercraft.
EJU45660Engine overheat warning
If the engine temperature rises significantly,
the “WARNING” indicator light comes on.
While the engine overheat warning is activat-
ed, the maximum engine speed is limited.
If the engine overheat warning is activated,
immediately reduce the engine speed, return
to shore, and then make sure that water is
being discharged from the cooling water pilot
outlet while the engine is running. If there is
no discharge of water, stop the engine, and
then check the jet intake for clogging. (See
page 72 for information on the jet intake.)NOTICE:
If you cannot locate and correct
the cause of the overheating, consult a
Yamaha dealer. Continuing to operate at higher speeds could result in severe en-
gine damage.
[ECJ00042]
EJU45681
Check engine warning
If a sensor malfunction or a short circuit is de-
tected, the “WARNING” indicator light blinks
once for several seconds.
If the check engine warning is activated, im-
mediately reduce the engine speed, return to
shore, and have a Yamaha dealer check the
engine.
EJU45690Communication disconnecting warning
If communication disconnecting is detected,
the “WARNING” indicator light and “L-
MODE” indicator light blink.
If the communication disconnecting warning
is activated, have the watercraft serviced by
a Yamaha dealer as soon as possible.
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