engine YAMAHA GP1800R SVHO 2022 Service Manual

Pre-operation checks
63
POST-LAUNCH CHECKS
TIP
To ensure safety and reliability, pre-operation checks should be made each time the water-
craft is used.
Jet thrust nozzle and re-
verse gate Check the jet thrust nozzle and reverse gate for
damage.
68
Stern drain plugs Check the stern drain plugs for damage and foreign
material and check that they are securely installed.
69
Hood Check that the hood is securely closed. 69
Front and rear seats Check that the seats are securely installed. 48
ITEM ROUTINE PAGE
Cooling water pilot outlet Check that water is discharged from the port (left)
cooling water pilot outlet while the engine is run-
ning. 69
Multifunction information
center Check the multifunction information center for prop-
er operation.
70
Shift system Check the shift system for proper operation. 70
Engine idling speed Check the engine idling speed. 70
ITEM ROUTINE PAGE
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Pre-operation checks
64
EJU32282
Pre-operation check pointsEJU40099Pre-launch checks
Perform the pre-launch checks in the pre-op-
eration checklist while the watercraft is on
land.
To perform the pre-launch checks:
(1) Remove the seats and seat storagecompartment. (See page 48 for seat re-
moval and installation procedures and
page 52 for information on the seat stor-
age compartment.)
(2) Perform the checks and make sure that there are no malfunctioning items or oth-
er problems.
(3) After completing these checks, securely install the seat storage compartment and
seats in their original positions.
EJU32334Engine compartment checkEWJ00462
Failure to ventilate the engine compart-
ment could result in a fire or explosion. Do
not start the engine if there is a fuel leak.
Ventilate the engine compartment. Leave the
engine compartment open for a few minutes
to allow any fuel vapors to escape.
Make sure that there is no damage inside the
engine compartment.
EJU34215Fuel system checksEWJ00382
Leaking fuel can result in fire or explosion.
Check for fuel leakage regularly.
If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
watercraft unsafe to operate.
Make sure that there is no damage, leakage,
or other problem in the fuel system.
Check:
Fuel filler cap and seal for damage
Fuel tank for damage and leakage
Fuel hoses and joints for damage and leak-
age
Fuel tank breather hose for damage and
leakage
EJU36875Fuel level check
Check the fuel level in the fuel tank.
Add fuel if necessary. (See page 55 for infor-
mation on filling the fuel tank.)
EJU32424Water separator check
Make sure that no water has collected in the
water separator. If water has collected in the
water separator, drain it. (See page 27 for in-
formation on draining the water separator.)
1Water separator
1
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Pre-operation checks
65
EJU40182Engine unit check
Check the exterior of the engine unit for dam-
age or other problem.
EJU36886Engine oil level check
Make sure that the engine oil level is between
the minimum and maximum level marks on
the dipstick. (See page 57 for information on
checking the engine oil level.)
EJU32456Bilge water check
Make sure that no bilge water has collected in
the engine compartment. If bilge water has
collected in the engine compartment, drain it.
(See page 59 for information on draining the
bilge water.)
EJU32488Battery checks
Make sure that the battery terminals are not
damaged and that the battery leads are con-nected properly.
WARNING! Never operate
the watercraft if the battery does not have
sufficient power to start the engine or if it
shows any other signs of decreased pow-
er. Loss of battery power may leave you
stranded.
[EWJ01242]
Make sure that the battery is securely held in
place.
EJU32614Steering system checks
Turn the handlebars to the right and left sev-
eral times to make sure that operation is
smooth and unrestricted throughout the
whole range, and that the free play is not ex-
cessive.
Turn the handlebars as far as possible to the
right and left to make sure that the jet thrust
nozzle moves as the handlebars are turned,
and that there is no difference between the
1 Dipstick
1 Maximum level mark
2 Minimum level mark
1
1
2
1Negative (–) battery terminal: Black lead
2 Positive (+) battery terminal: Red lead
2
1
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Pre-operation checks
67
EJU45351Yamaha Security System checkMake sure that the Yamaha Security System
operates properly. (See page 24 for Yamaha
Security System setting procedures.)
EJU32666Engine shut-off cord (lanyard) check
Make sure that the engine shut-off cord (lan-
yard) is not damaged. If the cord is damaged,
replace it. WARNING! Never try to repair
the engine shut-off cord (lanyard) or tie it
together. The engine shut-off cord (lan-
yard) may not pull free when the operator
falls off, allowing the watercraft to contin-
ue to run and cause an accident.
[EWJ01222]
EJU46050
Switch checksECJ01311
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.
Check the engine start/stop switch and the
engine shut-off switch for proper operation.
(See page 25 for information on operating
each switch.)
To check the operation of the switches:
(1) If the lock mode is selected for the
Yamaha Security System setting, selectthe unlock mode. (See page 24 for
Yamaha Security System setting proce- dures.)
(2) Push the engine start/stop switch to make sure that the engine starts.
(3) As soon as the engine starts running, push the engine start/stop switch to
1Clip
2 Engine shut-off switch
3 Engine shut-off cord (lanyard)
1 Engine start/stop switch
12
3
1
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Pre-operation checks
68
make sure that the engine stops immedi-
ately.
(4) Restart the engine, and then pull the en- gine shut-off cord (lanyard) to remove
the clip from the engine shut-off switch
to make sure that the engine stops im-
mediately.
EJU46060Electric trim system check
Turn on the multifunction information center,
and then operate the “TRIM/T.D.E.” switch.
Check that the jet thrust nozzle moves up and
down properly and that the trim setting indi-
cator change according to the operation of
the switch. (See page 39 for information on
turning on the multifunction information cen-
ter without starting the engine and page 31
for information on the electric trim system.)
EJU40102Storage compartment checks
Make sure that the storage compartments
are not damaged and that water has not col-
lected in the compartments. (See page 51 for
information on the storage compartments.)
EJU43800Fire extinguisher holder, cover, and band
checks
Make sure that the fire extinguisher holder,
cover, and band are not damaged and that
the fire extinguisher is securely held in place
using the band. (See page 53 for information
on the fire extinguisher holder, cover, and
band.)
EJU32544Fire extinguisher check
Check that there is a full fire extinguisher on
board.
To check the fire extinguisher, see the in-
structions supplied by the fire extinguisher
manufacturer. Always keep the fire extin-
guisher secured in the holder with its cover in
place.
Always carry a fire extinguisher on board. A
fire extinguisher is not standard equipment
with this watercraft. If you do not have one,
contact a Yamaha dealer or a fire extinguish-
er dealer to obtain one meeting the proper
specifications.
EJU40122Safety equipment check
Check that safety equipment meeting the ap-
plicable regulations is on board.
EJU32353Hull and deck check
Check the hull and deck for damage or other
problem.
EJU32657Jet intake checks
Make sure that the jet intake is not damaged
or clogged with weeds or debris. If the jet in-
take is clogged, clean it. (See page 98 for in-
formation on the jet intake.)
EJU43221Jet thrust nozzle and reverse gate check
Check the jet thrust nozzle and reverse gate
for damage or other problem.
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Pre-operation checks
69
EJU44252Stern drain plug checks
Loosen the stern drain plugs and remove
them, and then make sure that the plugs and
O-rings on the plugs are not damaged and
that there is no foreign material on the
threads or O-rings on the plugs. NOTICE:
Before installing the stern drain plugs,
clean the drain plug threads and the O-
rings on the plugs to remove any foreign
materials, such as dirt or sand. Otherwise,
the stern drain plugs could be damaged,
allowing water to enter the engine com-
partment. Check the O-rings on the stern
drain plugs and make sure that the plugs
are tightened securely before launching
the watercraft. Otherwise, water may
flood the engine compartment and cause
the watercraft to submerge.
[ECJ00364]
Securely install the stern drain plugs by tight-
ening them until they stop.
EJU41441Hood check
Push down on the rear of the hood and make
sure that it is securely closed.
EJU40147Post-launch checks
Perform the post-launch checks in the pre-
operation checklist while the watercraft is in
the water and the engine is running.
To perform the post-launch checks:
(1) Launch the watercraft. (See page 72 for information on launching the watercraft.)
(2) Perform the checks and make sure that there are no malfunctioning items or oth-
er problems.
EJU41811Cooling water pilot outlet check
Make sure that water is discharged from the
port (left) cooling water pilot outlet while the
engine is running. (See page 27 for informa-
tion on the cooling water pilot outlets.)
1Stern drain plug
2 O-ring
2
1
1Stern drain plug
1
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Pre-operation checks
70
EJU45260Multifunction information center check
Make sure that the multifunction information
center operates properly. (See page 39 for in-
formation on proper operation of the multi-
function information center.)
EJU43393Shift system check
Operate the throttle lever and RiDE lever, and
check that the watercraft moves or does not
move according to the displayed shift indica-
tor. (See page 29 for shift system operation
procedures.) WARNING! To avoid colli-
sions, operate at safe speeds and keep a
safe distance away from people, objects,
and other watercraft.
[EWJ01860] EJU40172
Engine idling speed check
Start the engine and warm it up. Use the ta-
chometer in the multifunction information
center to make sure that the engine idling
speed is not significantly above or below the
specified range.
1
Shift indicator
2 “F” (Forward position)
3 “N” (Neutral position)
4 “R” (Reverse position)
14.3V
RPM
x1000
MPH
1
2
3
4
Engine idling speed:
1250 ±100 r/min
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Operation
72
EJU40212Riding position
Operator riding position
The operator should grip the handlebars firm-
ly with both hands and sit astride the seat
with both feet on the floor of the footwell.
Passenger riding position
The passenger(s) should hold on firmly, either
to the person in front of them or to the hand-
grip provided, and sit astride the seat with
their feet on the floor of the footwell. Never al-
low a passenger to ride in front of the opera-
tor. (See page 16 for information on the riding
position when pulling a wakeboarder or wa-
ter-skier.)
EJU32803Launching the watercraft
When launching the watercraft, make sure
that there are no obstacles around you.
If the watercraft is launched from a trailer,
someone should make sure that waves do
not push the watercraft into the trailer.
EJU46071Starting the engine on waterEWJ01532
Do not apply throttle when anyone is at the
rear of the watercraft. Turn the engine off
or keep it at idle. Water and debris exiting
the jet thrust nozzle can cause severe in-
jury.
To start the engine:
(1) If the lock mode is selected for theYamaha Security System setting, selectthe unlock mode. (See page 24 for
Yamaha Security System setting proce- dures.)
(2) Move the watercraft to an area that is free from weeds and debris, and has a
water depth of at least 60 cm (2 ft) from
the bottom of the watercraft. NOTICE:
Never run the engine in water that is
less than 60 cm (2 ft) deep from the
bottom of the watercraft, otherwise
pebbles or sand could be sucked into
the jet intake, causing impeller dam-
age and engine overheating.
[ECJ00473]
(3) Attach the engine shut-off cord (lanyard) to your left wrist, and then attach the clip
to the engine shut-off switch. (See page
25 for information on operating the en-
gine shut-off switch.) WARNING! Check
that the engine shut-off cord (lanyard)
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Operation
73
is attached correctly. If the engine
shut-off cord (lanyard) is not attached
correctly, it may not pull free when the
operator falls off, allowing the water-
craft to continue to run and cause an
accident.
[EWJ00583]
(4) With the throttle lever released, push theengine start/stop switch (red button) to
start the engine. (See page 25 for infor-
mation on operating the engine
start/stop switch.)
EJU46080Stopping the engine
Release the throttle lever, and then push the
engine start/stop switch (red button) to stop
the engine. WARNING! You need throttle to
steer. Shutting the engine off can cause
you to hit an obstacle you are attempting to avoid. A collision could result in severe
injury or death.
[EWJ00602]
EJU32874
Leaving the watercraft
If leaving the watercraft, remove the clip from
the engine shut-off switch to prevent acci-
dental starting or unauthorized operation by
children or others.
EJU43411Operating the watercraft
When the throttle lever is squeezed, the “F”
(forward) shift indicator will be displayed and
the watercraft will move forward. While the
“F” (forward) shift indicator is displayed, the
watercraft will move forward at trolling speed
even if the throttle lever is in the fully closed
(idle) position. (See page 29 for shift system
operation procedures.)
1 Clip
2 Engine shut-off switch
3 Engine shut-off cord (lanyard)
12
3
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Operation
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EJU43423Turning the watercraftEWJ01783
Do not release the throttle lever when
trying to steer away from objects—as
with other powerboats, you need throt-
tle to steer. A collision could result in se-
vere injury or death.
When operating at higher speeds, make
gradual turns or slow down before turn-
ing. Sharp high-speed turns may cause
the watercraft to slide sideways or spin,
throwing the operator and passenger(s)
overboard, which could cause an injury.
Take early action to avoid collisions. The
RiDE system is not a braking device for
avoiding dangerous situations.
Steering control depends on the combination
of handlebar position and the amount of
throttle.
Water sucked in through the intake grate is
pressurized by the impeller in the jet pump.
As the pressurized water is expelled from the
pump through the jet thrust nozzle, it creates
thrust to move and steer the watercraft. The
higher the engine speed, the more thrust pro-
duced.
The amount of jet thrust, in addition to the po-
sition of the handlebars, determines how
sharply you turn.
A. More throttle produces higher thrust, sothe watercraft will turn more sharply.
B. Less throttle produces lower thrust, so the watercraft will turn more gradually.
C. Releasing the throttle lever completely produces only minimum thrust. If you are
traveling at speeds above trolling, you
will have rapidly decreasing ability to
1“F” (Forward position)
14.3V
RPM
x1000
km/h
1
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