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:
S
side cowlings
S
bottom cowlings
Refer to “COWLINGS”.
2. Remove:
S
radiator upper bolts
S
radiator lower bolt
Refer to “RADIATOR” in chapter 6.
3. Remove:
S
ignition coils
S
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:
S
spark plug type
Incorrect
!
Change.
Spark plug type (manufacturer)
CR9EK (NGK)
5. Check:
S
electrode
1
Damage / wear
!
Replace the spark plug.
S
insulator
2
Abnormal color
!
Replace the spark plug.
Normal color is medium-to-light tan.
6. Clean:
S
spark plug
(with a spark plug cleaner or wire brush)
7. Measure:
S
spark plug gap
a
(with a wire Thickness gauge)
Out of specification
!
Regap.
Spark plug gap
0.6
X
0.7 mm
(0.0236
X
0.0276 in)
Summary of Contents for YZF-R1S
Page 1: ......
Page 50: ...2 22 TIGHTENING TORQUES SPEC Cylinder head tightening sequence Crankcase tightening sequence ...
Page 56: ...2 28 1 Thermostat 2 Radiator cap 3 Radiator 4 Oil cooler COOLING SYSTEM DIAGRAMS SPEC ...
Page 57: ...2 29 ENGINE OIL LUBRICATION CHART SPEC ENGINE OIL LUBRICATION CHART ...
Page 61: ...2 33 1 Main axle 2 Oil delivery pipe 3 Drive axle LUBRICATION DIAGRAMS SPEC ...
Page 62: ...2 34 1 Cylinder head 2 Crankshaft LUBRICATION DIAGRAMS SPEC ...
Page 346: ...7 2 FUEL INJECTION SYSTEM FI 7 WIRING DIAGRAM ...
Page 401: ...8 8 IGNITION SYSTEM ELEC EAS00735 IGNITION SYSTEM CIRCUIT DIAGRAM ...
Page 420: ...8 27 LIGHTING SYSTEM ELEC EAS00780 LIGHTING SYSTEM CIRCUIT DIAGRAM ...
Page 427: ...8 34 SIGNALING SYSTEM ELEC EAS00793 SIGNALING SYSTEM CIRCUIT DIAGRAM ...
Page 436: ...8 43 COOLING SYSTEM ELEC EAS00807 COOLING SYSTEM CIRCUIT DIAGRAM ...
Page 456: ......
Page 457: ......