ignition YAMAHA YZF-R1S 2004 Service Manual
Page 15 of 457
CHECKING THE CONDITION OF THE BULB SOCKETS 8-6. . . . . . .
CHECKING THE LEDs 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IGNITION SYSTEM8-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRIC STARTING SYSTEM8-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION 8-15. . . . . . . . .
TROUBLESHOOTING 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTER MOTOR8-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE STARTER MOTOR 8-21. . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLING THE STARTER MOTOR 8-22. . . . . . . . . . . . . . . . . . . . . .
CHARGING SYSTEM8-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIGHTING SYSTEM8-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE LIGHTING SYSTEM 8-31. . . . . . . . . . . . . . . . . . . . . . . .
SIGNALING SYSTEM8-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE SIGNALING SYSTEM 8-36. . . . . . . . . . . . . . . . . . . . . .
COOLING SYSTEM8-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP SYSTEM8-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAM 8-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL PUMP SYSTEM 8-49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKING THE FUEL PUMP 8-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SELF-DIAGNOSIS8-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 8-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 9
TROUBLESHOOTING
STARTING FAILURES9-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUEL SYSTEM 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Page 27 of 457
1-11
SPECIAL TOOLS
GEN
INFO
Tool No.Tool name / FunctionIllustration
90890-04113
YM-04113
90890-04118
YM-4118Valve guide reamer
This tool is used to rebore the new valve
guides.
90890-06754
YM-34487
Ignition checker
This tool is used to check the ignition sys-
tem components.
90890-85505
ACC-1109-0501
Yamaha bond No. 1215
This bond is used to seal two mating sur-
faces (e.g., crankcase mating surfaces).
90890-03174
Digital circuit tester
This tool is used to check the electrical sys-
tem.
Pivot shaft wrench
90890-01471
YM-01471
Pivot shaft wrench
adapter
90890-01476Pivot shaft wrench
Pivot shaft wrench adapter
This tool is need to loosen or tighten the
spacer bolt.
90890-03132
YU-3112
Pocket tester
This instrument is needed for checking the
engine oil temperature.
Oil pressure
gauge
90890-03153
YU-03153
Adapter
90890-03139Oil pressure gauge
Adapter
These tools are used to measure engine oil
pressure.
90890-06756
Vacuum/pressure pump gauge set
This tool used to measure the vacuum pres-
sure.
90793-80009
Engine tachometer
This tool is needed for observing engine
rpm.
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Page 43 of 457
2-15
ELECTRICAL SPECIFICATIONSSPEC
ELECTRICAL SPECIFICATIONS
ItemStandardLimit
System voltage12 V
Ignition system
Ignition system type
Ignition timing
Crankshaft position sensor
resistance / color
T.C.I. unit model (manufacturer)
DC. T.C.I.
5 BTDC at 1,050 r / min
336 504 Ω at 20C (68F) / Gy-B
F8T822 (MITSUBISHI) (USA)
F8T823 (MITSUBISHI) (CAL)
Ignition coils
Model (manufacturer)
Minimum ignition spark gap
Primary coil resistance
Secondary coil resistance
F6T558 (MITSUBISHI)
6 mm (0.24 in)
1.19 1.61 Ω at 20C (68F)
8.5 11.5 kΩ at 20C (68F)
Charging system
System type
Model (manufacturer)
Normal output
Stator coil resistance / color
A.C. magneto
F4T850 (MITSUBISHI)
14 V / 560 W at 5,000 r / min
0.14 0.18 Ω at 20C (68F) / W-W
Rectifier / regulator
Regulator type
Model (manufacture)
Semi conductor short circuit
FH011AA (SHINDENGEN)
()
No-load regulated voltage
Rectifier capacity
Withstand voltage
()
14.3 15.1 V
50 A
100 V
Battery
Battery type
Battery voltage / capacity
Specific gravity
Manufacturer
Ten hour rate amperage
YTZ10S
12 V / 8.6 Ah
1.310
YUASA
0.8 A
Headlight typeHalogen bulb
Bulbs (voltage / wattage quantity)
Headlight
Auxiliary light
Tail / brake light
Front turn signal light / position light
Rear turn signal light
Licence plate light
Meter light
12 V 55 W 4
12 V 5 W 2
LED 1
12 V 21 W / 5 W 2
12 V 21 W 2
12 V 5 W 1
LED 1
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Page 45 of 457
2-17
ELECTRICAL SPECIFICATIONSSPEC
ItemStandardLimit
Fuses (amperage quantity)
Main fuse
Fuel injection system fuse
Headlight fuse
Signaling system fuse
Ignition fuse
Radiator fan motor fuse
Backup fuse (odometer and clock)
Reserve fuse
50 A 1
15 A 1
25 A 1
10 A 1
15 A 1
15 A 2
10 A 1
25 A, 15 A, 10 A 1
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Page 68 of 457
2-40
P To the air filter
Q Route the fuel tank drain hose
over the canister stay and be-
tween the breather hose 2 and
wire harness. On the front side of
the canister stay, let though the
bottom of the A.C.magneto lead
and the wire harness.
R Route by the upside of vehicle
away from the canister stay.
CABLE ROUTINGSPEC
I The coupler for the air induction
solenoid lead and camshaft sen-
sor lead should be connected
above the ignition coil sub wire
harness and it should not drop
on the cylinder head cover be-
hind the ignition coil.
J Pass the right handlebar switch
lead between the frame and heat
protector.
K Coolant reservoir tank drain
hose should cross with the
speed sensor lead under the
swingarm bracket. Route the
coolant reservoir tank drain hose
over the up side of the vehicle.L Pass the rear brake light switch
lead between the swingarm
bracket and coolant reservoir
tank.
M Release the tip of the clamp and
install it to the clutch cable.
Insert the clamp to the hole lo-
cated on the right back side of
the radiator.
Radiator fan motor lead should
not be caught while inserting the
clamp.
N Push the clamp until it hits the ra-
diator side stay. Radiator fan mo-
tor lead should not be caught.
O Clamp the clutch cable so that it
is within this specified clamp.
ProCarManuals.com
Page 88 of 457
3-11
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:
EAS00045
ENGINE
ADJUSTING THE VALVE CLEARANCE
The following procedure applies to all of the
valves.
Valve clearance adjustment should be made
on a cold engine, at room temperature.
When the valve clearance is to be measured or
adjusted, the piston must be at top dead center
(TDC) on the compression stroke.
1. Remove
rider seat
Refer to “SEATS”.
fuel tank
Refer to “FUEL TANK”.
air filter case
Refer to “AIR FILTER CASE”.
bottom cowlings
side cowlings
Refer to “COWLINGS”.
throttle body assembly
Refer to “THROTTLE BODIES” in chapter 7.
air cut-off valve
Refer to “AIR INDUCTION SYSTEM” in
chapter 7.
radiator
radiator fan motor
Refer to “RADIATOR” in chapter 6.
2. Remove
ignition coils
spark plugs
cylinder head cover
cylinder head cover gasket
Refer to “CAMSHAFT” in chapter 5.
3. Remove
pickup rotor cover
1
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Page 94 of 457
3-17
ADJUSTING THE VALVE CLEARANCE /
SYNCHRONIZING THE THROTTLE BODIESCHK
ADJ
NOTE:
NOTE:
NOTE:
7. Install:
all removed parts
For installation, reverse the removal procedure.
SYNCHRONIZING THE THROTTLE BODIES
Prior to synchronizing the throttle bodies, the
valve clearance and the engine idling speed
should be properly adjusted and the ignition tim-
ing should be checked.
1. Stand the motorcycle on a level surface.
Place the motorcycle on a suitable stand.
2. Remove:
rider seat
Refer to “SEATS”.
fuel tank
Refer to “FUEL TANK”.
3. Remove:
synchronizing hoses
1
4. Install:
vacuum gauge
1
(onto the synchronizing hose)
digital tachometer
(near the spark plug)
Vacuum gauge
90890-03094, YU-08030
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Page 100 of 457
3-23
CHECKING THE SPARK PLUGS
CHK
ADJ
CAUTION:
EAS00059
CHECKING THE SPARK PLUGS
The following procedure applies to all of the
spark plugs.
1. Remove:
side cowlings
bottom cowlings
Refer to “COWLINGS”.
2. Remove:
radiator upper bolts
radiator lower bolt
Refer to “RADIATOR” in chapter 6.
3. Remove:
ignition coils
spark plugs
Before removing the spark plugs, blow away
any dirt accumulated in the spark plug wells
with compressed air to prevent it from fal-
ling into the cylinders.
4. Check:
spark plug type
Incorrect Change.
Spark plug type (manufacturer)
CR9EK (NGK)
5. Check:
electrode
1
Damage / wear Replace the spark plug.
insulator
2
Abnormal color Replace the spark plug.
Normal color is medium-to-light tan.
6. Clean:
spark plug
(with a spark plug cleaner or wire brush)
7. Measure:
spark plug gap
a
(with a wire Thickness gauge)
Out of specification Regap.
Spark plug gap
0.6 0.7 mm
(0.0236 0.0276 in)
ProCarManuals.com
Page 101 of 457
3-24
CHECKING THE SPARK PLUGS /
MEASURING THE COMPRESSION PRESSURECHK
ADJ
13 Nm (1.3 mkg, 9.4 ftlb)
NOTE:
NOTE:
CAUTION:
8. Install:
spark plugs
ignition coils
Before installing the spark plug, clean the spark
plug and gasket surface.
9. Install:
radiator upper bolts
radiator lower bolt
Refer to “RADIATOR” in chapter 6.
10. Install:
side cowlings
bottom cowlings
Refer to “COWLINGS”.
EAS00065
MEASURING THE COMPRESSION
PRESSURE
The following procedure applies to all of the cyl-
inders.
Insufficient compression pressure will result in a
loss of performance.
1. Measure:
valve clearance
Out of specification Adjust.
Refer to “ADJUSTING THE VALVE CLEAR-
ANCE”.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Remove:
ignition coils
spark plugs
Before removing the spark plugs, use com-
pressed air to blow away any dirt accumu-
lated in the spark plug wells to prevent it
from falling into the cylinders.
ProCarManuals.com
Page 103 of 457
3-26
MEASURING THE COMPRESSION PRESSURE /
CHECKING THE ENGINE OIL LEVELCHK
ADJ
13 Nm (1.3 mkg, 9.4 ftlb)
NOTE: d. If the compression pressure is below the
minimum specification, pour a teaspoonful of
engine oil into the spark plug bore and mea-
sure again.
Refer to the following table.
Compression pressure
(with oil applied into the cylinder)
ReadingDiagnosis
Higher than
without oilPiston ring(s) wear
or damage
Repair.
Same as without
oilPiston, valves,
cylinder head
gasket or piston
possibly defective
Repair.
6. Install:
spark plug
7. Install:
ignition coils
EAS00069
CHECKING THE ENGINE OIL LEVEL
1. Stand the motorcycle on a level surface.
Place the motorcycle on a suitable stand.
Make sure the motorcycle is upright.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Check:
engine oil level
The engine oil level should be between the
minimum level mark
a and maximum level
mark
b.
Below the minimum level mark Add the
recommended engine oil to the proper level.
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