engine YAMAHA EXR 2021 User Guide

Description
22
1210 9
36
4
7
8
4
5
1
RiDE lever (page 28)
2 Start switch (page 24)
3 Engine shut-off switch (page 24)
4 Rearview mirror
5 Clip (page 24)
6 Throttle lever (page 25)
7 Multifunction information center (page 31)
8 Glove compartment (page 39)
9 Engine shut-off cord (lanyard) (page 24)
10 Engine stop switch (page 24)
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Description
23
Engine compartment
8
3
1011
4
2
1
56
7
9
1 Water separator (page 26)
2 Fuel tank
3 Air filter case
4 Flushing hose connector (page 71)
5 Oil tank filler cap/Dipstick (page 44)
6 Oil tank
7 Battery (page 53)
8 Fuse box 9
Spark plug/Ignition coil
10 Fire extinguisher holder (page 41)
11 Seat storage compartment (page 40)
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Control function operation
24
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.
EJU44350Start switch “ ”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
1 Engine stop switch
1 Engine shut-off switch
2 Clip
3 Engine shut-off cord (lanyard)
1
1
2
3
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Control function operation
25
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.
Throttle lever is malfunctioning.
RiDE lever is squeezed.
RiDE lever is malfunctioning.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.
EJU43342RiDE lever
When the RiDE lever is squeezed, the reverse
gate lowers and the watercraft starts movingin reverse. If the watercraft is moving forward,
the watercraft gradually slows down until it
stops, and then the watercraft starts moving
in reverse.
When the RiDE lever is released, it automati-
cally returns to its fully closed (idle) position
and the reverse gate moves to the neutral po-
sition.
EJU31262Steering system
By turning the handlebars in the direction you
wish to travel, the angle of the jet thrust noz-
1
Start switch
1 Throttle lever
1
1
1RiDE lever
1
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Control function operation
26
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.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 85 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.
1Handlebar
2 Jet thrust nozzle
1
21Cooling water pilot outlet
1
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Control function operation
27
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.
1Water separator
2 Drain screw
2
1
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Watercraft operation
28
EJU40014
Watercraft operation functions
EJU43154Shift system EWJ01773
Make sure that there are no obstacles or
people behind you before shifting into
reverse.
Do not touch the reverse gate while the
RiDE lever is being operated, otherwise
you could be pinched.
If the RiDE lever and throttle lever are
being operated at the same time, do not
release only the RiDE lever. Otherwise,
the watercraft could accelerate more
quickly than expected, which may lead
to an accident.
The RiDE lever and throttle lever can be oper-
ated to change the forward or rearward
movement of the watercraft only when the
engine is running. When the RiDE lever is
squeezed, the reverse gate lowers and de-
flects the water jet being discharged from the
jet thrust nozzle so that the watercraft moves
in reverse or is in neutral. When the throttle le-
ver is squeezed, the reverse gate rises and
the watercraft moves forward.
TIP:
This model is equipped with a function
which limits the engine speed in reverse.
When the engine is started, the reverse
gate automatically moves to the neutral po-
sition.
To shift into reverse:
(1) Release the throttle lever.
(2) Squeeze the RiDE lever. The reverse gate will lower, the engine speed will in-
crease, the watercraft will start moving in reverse, and the “R” (reverse) shift indi-
cator will be displayed.
To shift into neutral from reverse:
Release the RiDE lever. The reverse gate will
automatically return to the neutral position
1 RiDE lever
1 Reverse gate
2 Reverse position
1 “R” (Reverse position)
1
1
2
1
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Watercraft operation
29
and the “N” (neutral) shift indicator will be dis-
played.
TIP:
Although the neutral position helps keep the
watercraft from moving even when the en-
gine is running, some movement may occur.To shift into forward:
(1) Release the RiDE lever.
(2) Squeeze the throttle lever. The reverse
gate will rise completely, the engine
speed will increase, the watercraft will
start moving forward, and the “F” (for-
ward) shift indicator will be displayed.
1RiDE lever
1 Reverse gate
2 Neutral position
1 “N” (Neutral position)
1
1
2
1
1Throttle lever
1 Reverse gate
2 Forward position
1 “F” (Forward position)
1
1
2
1
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Instrument operation
31
EJU44570
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.
Multifunction information center standby
state
If the multifunction information center does
not receive any operation input within 30 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.
EJU35027Information display
The information display shows watercraft op-
erating conditions.
EJU43832Speedometer
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.
1 Information display
2 “WARNING” indicator light
12
1Fuel level meter
2 Shift indicator
3 Engine overheat warning indicator
4 Check engine warning indicator
5 Tachometer / hour meter / voltmeter
6 Oil pressure warning indicator
7 Fuel level warning indicator
8 Speedometer
1 Speedometer
251346
78
1
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Instrument operation
32
To switch the speedometer display units:
Start the engine, stop the engine, and then
push the engine stop switch 3 times, pushing
the switch for 0.4 seconds or more each time,
before the multifunction information center
turns off. The speedometer display units
change.
To switch the speedometer display units
again, repeat this procedure.
EJU44650Tachometer
The tachometer shows the engine speed.
TIP:
While the engine is stopped, the battery volt-
age and the total engine hours are displayed
alternately.
EJU43891Shift indicator
This indicator shows the reverse gate shift
positions: “F” (forward), “N” (neutral), and “R”
(reverse). (See page 28 for shifting proce-
dures.)
EJU44700Hour meter and voltmeter
The hour meter and voltmeter are displayed
in the tachometer portion of the information
display while the engine is stopped.
1 Engine stop switch
1 Speedometer
1
1
1Tachometer
1 Shift indicator
2 “F” (Forward position)
3 “N” (Neutral position)
4 “R” (Reverse position)
1
12
3
4
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