2005 YAMAHA GP1300R engine overheat

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2
EJU10070
FEATURES AND
FUNCTIONS
Location of main components .............. 2-1
Operation of controls and other
functions ................................................... 2-5
Seat ........................................................ 2-5
Hood ....................................................... 2-6
Fuel tank filler cap .................................. 2-6
Oil tank filler cap ..................................... 2-6
Engine stop switch ................................. 2-7
Engine shut-off switch ............................ 2-7
Throttle lever .......................................... 2-7
Start switch ............................................. 2-8
Cooling water pilot outlet ....................... 2-8
Steering system ..................................... 2-9
Quick Shift Trim System (QSTS)
selector ................................................. 2-10
Handgrip ............................................... 2-11
Engine overheat warning system ........ 2-12
Exhaust temperature warning
system .................................................. 2-13
Yamaha Engine Management System
(YEMS) ................................................. 2-14
Multifunction information center .......... 2-15
Tachometer .......................................... 2-16
Speedometer ....................................... 2-16
Fuel meter ............................................ 2-16
Hour meter/Voltmeter .......................... 2-17
Fuel warning indicator .......................... 2-17
Oil warning indicator ............................ 2-18
Check engine warning indicator .......... 2-18
Engine overheat warning indicator ...... 2-19
Exhaust temperature warning
indicator ................................................ 2-19
Storage compartments ........................ 2-20
Yamaha Adjustable Sponson (YAS) ... 2-21
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2-12
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EJU20450
Engine overheat warning
system
This model is equipped with an engine
overheat warning system.
If the engine starts to overheat, the warn-
ing light and the engine overheat warning
indicator begin to blink, and the buzzer
sounds intermittently.
When this occurs, reduce the engine
speed and beach the watercraft. Check for
water discharge. If there is no discharge of
water at the cooling water pilot outlet, whole
the engine is running, check the intake grate
and impeller for clogging.
WARNING@ Before attempting to remove weeds or
debris from the intake grate or impeller,
shut the engine off and remove the clip
from the engine shut-off switch. Severe
injury or death could result from coming
in contact with the rotating parts of the
jet pump.
@
CAUTION:@ This watercraft is equipped with a cata-
lytic converter.

Return to shore at low speed if over-
heat warning indicator and buzzer
come on. If you ignore these signals,
engine will stop running and cannot be
restarted until exhaust system cools
down.

Have your watercraft inspected and
serviced by a Yamaha dealer if engine
stops due to overheating.
@
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If the overheat warning is ignored, engine
and exhaust system heat may increase, par-
ticularly if the watercraft is operated at
higher speeds. When this occurs, the warn-
ing light, the engine overheat warning indi-
cator and the buzzer will change from
intermittently to continuously on, and the
overheat system will stop ignition to the
engine to reduce the risk of severe over-
heating. The engine cannot be started until
it cools down, so it may be necessary to
have the watercraft towed back to the
beach. (See “Towing the watercraft” on page
5-7 for towing procedures.)
NOTE:@ Press the select button on the multifunction
information center to stop the buzzer.
@
EJU20460
Exhaust temperature warning
system
This model is equipped with an exhaust
temperature warning system.
If the exhaust temperature gets too hot,
the warning light and exhaust temperature
warning indicator begin to blink, and the
buzzer sounds intermittently.
When this occurs, reduce engine speed
and beach the watercraft to allow the
exhaust system to cool down.
WARNING@ Hot muffler surfaces can cause serious
burns. Do not touch any muffler surface
during or after engine operation. The cat-
alytic converter gets hotter after the
engine stops.
@
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CAUTION:@ This model is equipped with a catalytic
converter.

When the exhaust temperature warn-
ing system is activated, reduce engine
speed (below 4,000 r/min) and beach
the watercraft.

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
engine damage.
@
NOTE:@ Press the select button on the multifunction
information center to stop the buzzer.
@
EJU19940
Yamaha Engine Management
System (YEMS)
This model is equipped with an inte-
grated, computerized management system
that controls and adjusts ignition timing, fuel
injection, engine diagnostics, and the Off-
Throttle Steering (OTS) system.
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EJU20161
Multifunction information
center
This meter contains following functions for
the help and convenience of operation.
1
Tachometer
2
Speedometer
3
Hour meter/Voltmeter
4
Fuel meter
5
Warning light
6
Fuel warning indicator
7
Engine overheat warning indicator
8
Oil warning indicator
9
Exhaust temperature warning indicator
0
Check engine warning indicator
A
Select button
CAUTION:@
Do not run the engine over 4,000 r/min
to check the meter for operation on
land. The engine could overheat or the
catalytic converter could result in seri-
ous damage.

Use the specified resistor-type spark
plug and cap, otherwise the meter may
function erratically.
@
NOTE:@ All display light up and the buzzer sounds
twice after the engine starts. Then, the
meter will operate normally after few sec-
onds. The current display will continue to
operate for 25 seconds after the engine
stops.
@
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EJU20050
Engine overheat warning
indicator
If the engine starts to overheat, the warn-
ing light and engine overheat warning indi-
cator begin to blink, and the buzzer sounds
intermittently.
If the watercraft continues to be operated
at higher speeds after the warning system
has been activated, the warning light,
engine overheat warning indicator and the
buzzer will change from intermittently to
continuously on. (See “Engine overheat
warning system” on page 2-12 for further
details.)
The warning signals will turn off when the
engine is started after it has cooled down.
NOTE:@ When the warnings overlap each other, their
priority is as follows:
1. Final overheat warning
2. Fuel level warning
3. Oil level warning
4. Initial overheat warning
5. Exhaust temperature warning
6. Check engine warning
@
EJU11860
Exhaust temperature warning
indicator
If the exhaust system becomes too hot,
the warning light and exhaust temperature
warning indicator begin to blink, and the
buzzer sounds intermittently. (See “Exhaust
temperature warning system” on page 2-13
for further details.)
The warning signals will turn off when the
engine is started after it has cooled down.
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EJU10580
Jet unit
Carefully check the jet intake for weeds,
debris, or anything else that might restrict
the intake of water. If the intake is clogged,
cavitation could occur, reducing jet thrust,
and possibly damaging the jet pump.
In some cases, the engine may overheat
because of lack of cooling water, and dam-
age to the engine could result. Engine cool-
ing water is fed to the engine by the jet
pump. (See page 5-4 for jet intake cleaning
procedures.)
WARNING@
Keep away from intake grate while
engine is on. Items such as long hair,
loose clothing, or PFD straps can
become entangled in moving parts
resulting in severe injury or drowning.

Stop the engine and remove the clip
from the engine shut-off switch before
removing any debris or weeds, which
may have collected around the jet
intake.
@
EJU10590
Engine shut-off cord (lanyard)
Check that the engine shut-off cord is not
frayed or broken. If the cord is damaged,
replace it; never try to repair it or tie it
together.
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EJU18352
Switches
CAUTION:@ Do not run the engine of the watercraft
for more than 15 seconds on land with-
out supplying water, otherwise the
engine may overheat.
@
Check the start switch, the engine stop
switch, and the engine shut-off switch for
proper operation.
Push the start switch 1 to start the
engine. As soon as the engine starts run-
ning, push the engine stop switch 2 to ver-
ify that the engine stops immediately.
Restart the engine, and then pull the engine
shut-off cord 5 to remove the clip 4 from
the engine shut-off switch 3 to verify that
the engine stops immediately. (See pages
2-7 to 2-8 for information on proper opera-
tion of the start switch, the engine stop
switch, and the engine shut-off switch.)
EJU10610
Cooling water pilot outlet
Check that water comes out from the out-
lets while the engine is running and the
watercraft is in the water.
EJU10620
Multifunction information center
Check the operation of the multifunction
information center. (See pages 2-15 to 2-19
for multifunction information center.)
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