engine YAMAHA GP1300R 2007 Workshop Manual

Maintenance and care
67
If the steering is stiff or misadjusted, have a
Yamaha dealer service it.
EJU34360Checking and adjusting the throttle
cable
Check that the throttle cable moves back to
the set position smoothly and that the throttle
lever free play is within specification.
(1) Squeeze and release the throttle lever. If
the throttle lever does not return smooth-
ly, have a Yamaha dealer service it.(2) Adjust the free play by loosening the lock-
nut and turning the adjuster.
EJU34371Cleaning and adjusting the spark
plugs
WARNING
EWJ00350
Be careful not to damage the insulator
when removing or installing a spark plug.
A damaged insulator could allow sparks to
escape, which could result in a fire or ex-
plosion.
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate something about
the condition of the engine. For example, if the
center electrode porcelain is very white, this
could indicate an intake air leak or carburetion
problem in that cylinder. Do not attempt to di-
agnose any problems yourself. Have a
Yamaha dealer service the watercraft.
Remove and inspect the spark plugs periodi-
cally; heat and deposits will cause the spark
plugs to slowly break down and erode. If elec-
trode erosion becomes excessive, or if carbon Difference of A and B:
Maximum 5 mm (0.20 in)
1Locknut
2Adjuster
3Throttle lever free play
Throttle lever free play:
4.0–7.0 mm (0.16–0.28 in)
UF1G74E0.book Page 67 Monday, July 31, 2006 10:10 AM

Maintenance and care
71
EJU34490Fuel injection system
The fuel injection system was set at the
Yamaha factory. If the fuel injection system
needs to be adjusted, have a Yamaha dealer
service the watercraft.
CAUTION:
ECJ00220
Do not attempt to adjust the fuel injection
system. If the settings are disturbed by
someone who does not have the neces-
sary technical knowledge, poor engine
performance and damage may result.
EJU34500Checking the trolling speed
(1) Place the watercraft in the water.
(2) Start the engine and warm it up. Use the
tachometer in the multifunction informa-
tion center to check the trolling speed.
If the trolling speed is out of specification,
have a Yamaha dealer service the watercraft.
EJU34520Bleeding the oil pump
If the oil tank becomes completely empty, or
any hose connected to the oil pump has been
disconnected, the oil pump must be bled to
ensure proper oil flow.
If necessary, have a Yamaha dealer bleed the
oil pump.
EJU36190Adjusting the Yamaha Adjustable
Sponsons (YAS)
The Yamaha Adjustable Sponsons can be
adjusted to two positions to enhance water-
craft performance according to operator pref-
erence and operating conditions. (See page
33 for an explanation of the positions.)To adjust the YAS:
(1) Remove the bolts on both sponsons.
(2) Remove the sponsons, and then install
them in the desired position.
NOTE:
Be sure to install both sponsons in the same
position.
(3) Tighten the sponson bolts to the specified
torque. Trolling speed:
1350 ±100 r/min
1Bolt
Sponson bolt tightening torque:
18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
UF1G74E0.book Page 71 Monday, July 31, 2006 10:10 AM

Specifications
72
EJU34540
Specifications
Watercraft capacity:
Maximum people on board:
2 person
Maximum load capacity:
160 kg (353 lb)
Dimensions:
Length:
2930 mm (115.4 in)
Width:
1150 mm (45.3 in)
Height:
1020 mm (40.2 in)
Dry weight:
297 kg (655 lb)
Performance:
Maximum output (according to ISO 8665/SAE
J1228):
114.7 kW@7000 r/min
Maximum fuel consumption:
57.0 L/h (15.1 US gal/h) (12.5 Imp.gal/h)
Cruising range at full throttle:
1.05 hour
Trolling speed:
1350 ±100 r/min
Engine:
Engine type:
2-stroke
Number of cylinders:
3
Engine displacement:
1297.0 cm³
Bore & stroke:
84.0 × 78.0 mm (3.31 × 3.07 in)
Compression ratio:
5.90 :1
Lubrication system:
Oil injection
Cooling system:
Water
Starting system:
Electric
Ignition system:
Digital C.D.I.
Spark plug:
BR8ES-11
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)Battery capacity:
12 V19.0 Ah
Charging system:
Flywheel magneto
Drive unit:
Propulsion system:
Jet pump
Jet pump type:
Axial flow, single stage
Impeller rotation:
Counterclockwise
Jet thrust nozzle angle:
23.0 °+23.0 °
Jet thrust nozzle trim angle:
-10 °, -5 °, 0 °, 5 °, 10 °
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Minimum octane rating (PON):
86
Minimum octane rating (RON):
90
Recommended engine oil:
YAMALUBE 2-W
Fuel tank total capacity:
60.0 L (15.9 US gal) (13.2 Imp.gal)
Engine oil tank capacity:
5.5 L (1.45 US gal) (1.21 Imp.gal)
UF1G74E0.book Page 72 Monday, July 31, 2006 10:10 AM

Trouble recovery
73
EJU34560
Troubleshooting
If you have any trouble with your watercraft, use this section to check for the possible cause.
If you cannot find the cause, or if the procedure for replacement or repair is not described in
this owner’s/operator’s manual, have a Yamaha dealer perform the necessary service.
EJU34580Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Engine shut-
off switchClip not in place Install clip
22
Fuse Burned out Replace the fuse and
check wiring78
Battery Run down Recharge 69
Poor terminal con-
nectionsTighten as required
69
Terminal corroded Clean 61
Starter motor Faulty Have serviced by
Yamaha dealer—
Warning sys-
temOverheat mode Cool down engine
29
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 23
Fuel Empty Refill as soon as pos-
sible36
Stale or contaminat-
edHave serviced by
Yamaha dealer66
Fuel tank Water or dirt present Have serviced by
Yamaha dealer66
Spark plug Fouled or defective Clean or replace 67
Spark plug
capNot connected or
looseConnect properly
67
Crankcase Filled with water Crank engine with
plug out until clean79
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
Water tem -
perature sen-
sorFailed Have serviced by
Yamaha dealer 29
UF1G74E0.book Page 73 Monday, July 31, 2006 10:10 AM

Trouble recovery
74
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible36
Stale or contaminat-
edHave serviced by
Yamaha dealer66
Fuel tank Water or dirt present Have serviced by
Yamaha dealer66
Spark plug Fouled or defective Replace 67
Incorrect heat range Replace 67
Gap incorrect Adjust 67
Spark plug
capLoose Connect properly 67
Cracked, torn, or
damagedReplace
—
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinksFuel level Empty Refill as soon as pos-
sible36
Engine oil
levelEmpty Refill immediately 36
Oil filter clogged Have serviced by
Yamaha dealer—
Engine over-
heatedJet intake clogged Clean 76
Water temperature
sensor is failedHave serviced by
Yamaha dealer29
Low battery
voltageBattery voltage low Charge 69
Battery terminal con-
nected wrongConnect properly
69
Exhaust gas
temperatureGas temperature is
too highCool down engine
31
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer31 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF1G74E0.book Page 74 Monday, July 31, 2006 10:10 AM

Trouble recovery
75
Watercraft slow or
loses powerCavitation Jet intake clogged Clean 76
Impeller damaged or
wornHave serviced by
Yamaha dealer—
Engine over-
heatedJet intake clogged Clean
76
Spark plug Fouled or defective Replace 67
Incorrect heat range Replace 67
Gap incorrect Adjust 67
Spark plug
capsLoose Connect properly
67
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer66
Bilge Water in bilge Drain 39 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF1G74E0.book Page 75 Monday, July 31, 2006 10:10 AM

Trouble recovery
76
EJU34620
Emergency procedures EJU34630Cleaning the jet intake and impeller
If weeds or debris get caught in the jet intake
or impeller, cavitation can occur, causing jet
thrust to decrease even though engine speed
rises. If this condition is allowed to continue,
the engine will overheat and may seize. If
there is any sign that the jet intake or impeller
is clogged with weeds or debris, return to
shore and check the intake and impeller. Al-
ways stop the engine before beaching the wa-
tercraft.
WARNING
EWJ00780
Before attempting to remove weeds or de-
bris from the jet intake or impeller area,
shut the engine off and remove the clip
from the engine shut-off switch. Severe in-
jury or death could result from coming incontact with the rotating parts of the jet
pump.
CAUTION:
ECJ00650
If weeds or debris get caught in the jet in-
take, do not operate the watercraft above
trolling speed until they have been re-
moved.
(1) Turn the watercraft on its side as shown.
UF1G74E0.book Page 76 Monday, July 31, 2006 10:10 AM

Trouble recovery
77
CAUTION:
ECJ00660

Place a suitable clean cloth or carpeting
underneath the watercraft to protect it
from abrasions and scratches.

Always turn the watercraft over onto its
port (left) side.

When turning the watercraft on its side,
support the bow so that the handlebars
are not bent or damaged.
(2) Remove any weeds or debris from
around the drive shaft, impeller, jet pump
housing, and jet thrust nozzle.
If debris is difficult to remove, consult a
Yamaha dealer.
CAUTION:
ECJ00670
Always avoid operating your watercraft in
areas where weed growth is thick. If travel-
ing in weeded areas is unavoidable, oper-
ate the engine alternately at partial throttle
and full throttle. Weeds tend to accumu-
late more at a steady speed and at trolling
speed. If weeds clog the jet intake or im-
peller area and cause cavitation, follow the
cleaning procedure above.
EJU34640Jumping the battery
If the watercraft battery has run down, the en-
gine can be started using a 12-volt booster
battery and jumper cables.
WARNING
EWJ00790
Battery electrolyte is poisonous and dan-
gerous, causing severe burns, etc. Elec-
trolyte contains sulfuric acid. Avoid
contact with skin, eyes, or clothing.
Antidotes
External: Flush with water.
Internal: Drink large quantities of water or
milk. Follow with milk of magnesia, beatenegg, or vegetable oil. Call a physician im-
mediately.
Eyes: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flames, cigarettes, etc., well away.
If using or charging the battery in an en-
closed space, make sure that it is well ven-
tilated. Always shield your eyes when
working near batteries.
KEEP OUT OF THE REACH OF CHILDREN.
EJU34650Connecting the jumper cables
(1) Connect the positive (+) jumper cable to
the positive (+) battery terminals of both
batteries.
(2) Connect one end of the negative (–)
jumper cable to the negative (–) battery
terminal of the booster battery.
(3) Connect the other end of the negative (–)
jumper cable to an unpainted bolt on the
cylinder head.
CAUTION:
ECJ00680
Do not connect the end of the negative (–)
jumper cable to the negative (–) battery
terminal of the watercraft battery! Make
sure that all connections are secure and
correct before attempting to start the en-
1Positive (+) jumper cable
2Negative (–) jumper cable
3Booster battery
UF1G74E0.book Page 77 Monday, July 31, 2006 10:10 AM

Trouble recovery
78
gine. Any wrong connection could dam-
age the electrical system.
(4) Start the engine, and then disconnect the
jumper cables by reversing the steps
above.
CAUTION:
ECJ00690

Never push the start switch while the en-
gine is running.

Do not operate the start switch for more
than 5 seconds, otherwise the battery
will be discharged and the engine will
not start. Also, the starter motor could
be damaged. If the engine does not start
in 5 seconds, release the start switch,
wait 15 seconds, and then try again.
EJU34680Replacing the fuses
The fuses are located in the electrical box.
To replace a fuse:
(1) Remove the cap on the electrical box.
(2) Replace the blown fuse with the spare
fuse of the correct amperage by using the
fuse puller on the reverse side of the cap.
WARNING
EWJ00800
Do not use fuses of higher amperage than
recommended. Substitution with a fuse
that has an improper rating can cause ex-
tensive electrical system damage and pos-
sible fire.
EJU34710Towing the watercraft
If the watercraft becomes inoperative in the
water, it can be towed to shore.
If the watercraft must be towed in an emer-
gency using a towline, the operator should
ride the watercraft, holding onto the handle-
bars.
CAUTION:
ECJ00720

Tow the watercraft at 5 mph (8 km/h) or
less, otherwise water could enter the en-
gine through the exhaust passages or
through the air intake and flood the en-
gine compartment if it is towed too fast.

Tow the watercraft using the bow eye
only.
1Electrical box
2Cap
3Fuse puller
4Fuse
5Spare fuse
Fuse amperage:
Main fuse:
20 A
Meter fuse:
3 A
Bilge pump fuse:
3 A
UF1G74E0.book Page 78 Monday, July 31, 2006 10:10 AM

Trouble recovery
79

The bow must be kept up out of the wa-
ter during towing to prevent water from
entering the engine compartment.
WARNING
EWJ00810

The watercraft should only be towed in
an emergency.

The towline should be long enough so
that the watercraft will not collide with
the towing boat when slowing down. A
good rule of thumb is a towline that is
three times the combined length of the
towing boat and the watercraft.

The operator of the towing boat must
keep speed to a minimum and avoid traf-
fic or obstacles which could be a hazard
to the rider on the watercraft.
EJU34740Submerged watercraft
If the watercraft is submerged or flooded with
water, follow the procedure below and consult
a Yamaha dealer as soon as possible. Failure
to do so could result in serious engine dam-
age!
In an emergency:
(1) Beach the watercraft and remove the
stern drain plugs to drain the water fromthe engine compartment. (See page 39
for more information.)
Remove the storage compartment drain
plugs to drain the water from each stor-
age compartment.
(2) Install the stern drain plugs.
(3) Have the watercraft inspected by a
Yamaha dealer as soon as possible.
1Bow eye
UF1G74E0.book Page 79 Monday, July 31, 2006 10:10 AM