YAMAHA GP800R 2003 Service Manual

2-18
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EJU01035
Storage compartments
A front storage compartment and a glove
compartment are provided.
NOTE:@
Make sure that the storage compartments
are properly secured before operating the
watercraft.

The storage compartments are not
designed to be waterproof. If you carry
objects that must be kept dry, such as the
manuals, put them in a waterproof bag.
@
EJU01037
Front storage compartment
The front storage compartment 2 is
located at the bow.
To open the front storage compartment,
push the hood latch 1 down, and then open
the hood.
NOTE:@ The front storage compartment can be
removed to access the engine compart-
ment.
@
Front storage compartment:
Capacity: 16 L (4.2 US gal, 3.5 Imp gal)
Load limit: 5 kg (11 lb)
To close the front storage compartment,
push down on the rear of the hood until it
latches securely.
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2-19
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EJU01038
Glove compartment
A glove compartment 2 is located in front
of the seat.
To open the glove compartment, slide the
latch 1 toward you, and then lift up the lid.
To close the glove compartment, push the
lid down until it locks securely.
Glove compartment:
Capacity: 2 L (0.53 US gal, 0.44 Imp gal)
Load limit: 1 kg (2.2 lb)
EJU01039
Yamaha Adjustable Sponson
(Y.A.S.)
The sponsons 1 have adjustable posi-
tioning to allow the operator to enhance
either straight-line performance or turning
performance according to the preference
and operating conditions.
Adjusting to upward A:
There will be less water resistance in this
position, so straight-ahead acceleration
when on plane and top speed will be
enhanced.
Adjusting to downward B:
This position will give the watercraft more
“hook” which will enhance turning perfor-
mance.
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E
3
EJU01040
OPERATION
Fuel and oil ............................................... 3-1
Gasoline ................................................. 3-1
2-stroke engine oil .................................. 3-2
Filling the fuel tank ................................. 3-3
Filling the oil tank ................................... 3-4
Pre-operation checks .............................. 3-5
Pre-operation check list ......................... 3-5
Pre-operation check points .................... 3-6
Operation ................................................ 3-13
Engine break-in .................................... 3-13
Starting the engine ............................... 3-15
Stopping the engine ............................. 3-18
Leaving the watercraft ......................... 3-18
Operating your watercraft .................... 3-19
Getting to know your watercraft ........... 3-19
Learning to operate your watercraft .... 3-19
Riding watercraft with a passenger ..... 3-20
Starting the watercraft .......................... 3-21
Boarding and starting in deep water ... 3-23
Capsized watercraft ............................. 3-25
Turning the watercraft .......................... 3-27
Stopping the watercraft ........................ 3-29
Beaching the watercraft ....................... 3-30
Docking the watercraft ......................... 3-30
Rough water operation ........................ 3-30
Post-operation checks ......................... 3-31
Transporting .......................................... 3-33
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3-1
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EJU01041
Fuel and oil
This engine uses Yamaha’s oil injection
system, which provides superior lubrication
by ensuring the proper oil ratio for all operat-
ing conditions. No fuel premixing is neces-
sary except during the engine break-in
period. Simply pour gasoline into the fuel
tank and oil into the oil tank.
EJU01911
Gasoline
WARNING@ GASOLINE AND ITS VAPORS ARE
HIGHLY FLAMMABLE AND EXPLOSIVE!

Do not smoke when refueling, and
keep away from sparks, flames, or
other sources of ignition.

Stop engine before refueling.

Refuel in a well-ventilated area with
the watercraft in a horizontal position.

Do not stand or sit on the watercraft
while refueling in case of fire.

Take care not to spill gasoline. If gaso-
line spills, wipe it up immediately with
dry rags. Always properly dispose of
gasoline-soaked rags.

Avoid overfilling the fuel tank. Stop fill-
ing when the fuel level just reaches the
bottom of the filler tube. Do not fill up
the filler tube because fuel expands as
it warms up and could overflow. If tem-
porarily leaving the watercraft with a
full fuel tank, do not leave it in direct
sunlight. Leave it in a well-ventilated
area with the watercraft in a horizontal
position.

Tighten the filler cap securely after
refueling.

If you should swallow some gasoline,
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.
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3-2
E

If any gasoline spills onto your skin,
immediately wash with soap and
water. Change clothing if gasoline
spills on it.
@
CAUTION:@ Use only fresh gasoline that has been
stored in clean containers.
@
EJU01832
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing meth-
anol.
Gasohol containing ethanol can be used
if ethanol content does not exceed 10% and
the fuel meets minimum octane ratings.
Gasohol containing methanol is not rec-
ommended by Yamaha because it can
cause fuel system damage or engine perfor-
mance problems.
EJU01044
2-stroke engine oil
If YAMALUBE 2-W is not available,
another 2-stroke engine oil with an NMMA-
certified TC-W3 rating may be used.Recommended gasoline:
Regular unleaded gasoline with
a minimum octane rating of
86 (Pump octane number) = (R+M)/2
90 (Research octane number)
Recommended engine oil:
YAMALUBE 2-W
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3-3
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EJU01045
Filling the fuel tank
CAUTION:@ Be careful when refueling. Avoid getting
water or other contaminants in the fuel
tank. Contaminated fuel can cause poor
running or engine damage.
@
1. Open the hood and remove the front
storage compartment, to check the fuel
level. (See page 2-18 for front storage
compartment.)
2. Open the fuel tank filler cap, and slowly
add fuel to the fuel tank.
3. Stop filling when the fuel just reaches the
bottom of the filler tube on the fuel tank.
Do not fill into the filler tube, because
fuel could spill out.
Fuel tank capacity:
Total: 60 L (15.9 US gal, 13.2 Imp gal)
Reserve: 10 L (2.6 US gal, 2.2 Imp gal)
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3-4
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EJU01046
Filling the oil tank
WARNING@
Do not add gasoline to the oil tank.
Fire or explosion could result.

Oil in the bilge is a serious fire hazard.
Wipe up any spilled oil immediately.
@
CAUTION:@ Do not allow the oil tank to become com-
pletely empty. If the oil tank becomes
empty the oil injection pump must be
bled to ensure proper oil flow, otherwise
engine damage may occur. If bleeding of
the oil pump is necessary, have a
Yamaha dealer bleed it.
@
1. Remove the seat to watch the oil level.
(See page 2-5 for seat.)
2. Open the oil tank filler cap, and very
slowly add engine oil to the oil tank.
3. Stop filling when the oil just reaches the
top of oil tank visible.
Oil tank capacity:
5.5 L (1.5 US gal, 1.2 Imp gal)
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3-5
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EJU01346
Pre-operation checks
EJU01347
Pre-operation check list
Before operating this watercraft, perform the checks in the following check list. See the
accompanying text in this chapter for details on how to perform the checks.
WARNING@ If any item in the pre-operation check list is not working properly, have it inspected
and repaired before operating the watercraft, otherwise an accident could occur.
@
POC-***
NOTE:@ Pre-operation checks should be made thoroughly each time the watercraft is used. This pro-
cedure can be completed in a short time. It is worth the time spent to assure safety and reli-
ability.
@
ITEM ROUTINE PAGE
Engine compartment Remove the seat and front storage compartment
to ventilate engine compartment. Check for fuel
vapors or loose electrical connections3-6
Bilge Check for water and fuel residue and remove if
necessary3-7
Throttle Check that the throttle lever springs back 3-10
Steering system Check for proper steering system operation 3-10
Fuel and oil Check fuel and oil level and add if necessary
Check hoses and tanks for leakage3-6
Water separator Check for water and drain if necessary 3-7
Battery Check electrolyte level and battery condition 3-8
Hood Check that the hood is properly secured 2-6
Seat Check that the seat is properly secured 2-5
Hull/Deck Check the hull and deck for cracks or other dam-
age—
Jet unit Check for debris and remove if necessary 3-11
Fire extinguisher Check the condition and replace if necessary 3-9
Engine shut-off cord Check condition and replace is frayed or broken 3-11
Switches Check the start switch, engine stop switch and
engine shut-off switch for proper operation when
the watercraft is in the water3-12
Cooling water pilot outlet Check that water is discharged while the engine
is running and the watercraft is in the water3-12
Multifunction information center Check for warning indications and proper opera-
tion3-12
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3-6
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EJU01048
Pre-operation check points
EJU01050
Engine compartment
Ventilate the engine compar tment before
each use.
To ventilate the engine compartment,
remove seat and front storage compart-
ment. (See page 2-5 for seat, and 2-18 for
front storage compartment.) Allow the
engine compartment to remain open for a
few minutes to allow any fuel vapors to
escape. Also, check for loose electrical con-
nections.
WARNING@ Failure to ventilate the engine compart-
ment could result in fire or explosion. Do
not start the engine if there is a fuel leak
or a loose electrical connection.
@
EJU01051
Fuel and oil systems
Check the fuel system for leakage, cracks
or malfunctions before each use. (See page
4-9 for check points and correct proce-
dures.)
1. Remove the fuel tank filler cap to release
any pressure that might have built up in
the fuel tank.
2. Remove seat and front storage compart-
ment. (See page 2-5 for seat, and 2-18
for front storage compartment.)
3. Check the fuel and oil levels in the tanks
and replenish if necessary. (See pages
3-3 and 3-4 for filling instructions.)
4. Turn the fuel cock to the “ON” position.
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3-7
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EJU01961
Water separator
Check the water separator 1 for water.
Normally the water separator is empty. The
water separator retains any water entering
through the fuel tank breather hose if the
watercraft is capsized.
If water remains in the water separator,
drain it by removing the drain screw 2.
Place a drain pan under the water separator
to catch the draining water or use a dry cloth
to soak up any water that could spill into the
watercraft. If any water spills into the water-
craft, be sure to wipe it up with a dry cloth.
Be sure to install the drain screw after drain-
ing the water separator.
EJU01053
Bilge
Check for moisture and fuel residue in the
bilge.
Excessive water in the bilge can splash
into the carburetor and engine which could
cause engine damage.
To remove water from the bilge:
1. Remove the stern drain plugs.
2. Raise the bow of the watercraft until the
water drains.
3. After the water has drained, wipe the
bilge with dry rags to make sure that the
bilge is thoroughly dry.
4. Install the drain plugs.
CAUTION:@
Make sure that the stern drain plugs
are tightened securely before launch-
ing the watercraft.

Clean any foreign materials, such as
dirt or sand, from the drain plug
threads before installing the drain
plugs.
@
UF0W72.book Page 7 Thursday, August 22, 2002 1:27 PM