ENGINE
3-10
into the cylinders.
4. Check:
● Spark plug type
Incorrect → Change.
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.
8. Install:
● Spark plug
NOTE:
Before installing the spark plug, clean the spark
plug and gasket surface.
9. Connect:
● Spark plug
10.Install:
● Inner fender
● Side cover (left and right)
● Center cover
Refer to “GENERAL CHASSIS” on page 4-1.
EAS20700
CHECKING THE IGNITION TIMING
NOTE:
Prior to checking the ignition timing, check the
wiring connections of the entire ignition system.
Make sure all connections are tight and free of
corrosion.
1. Remove:
● Center cover
● Side cover (left and right)
● Left footrest board
Refer to “GENERAL CHASSIS” on page 4-1.
2. Connect:
● Timing light “1”
● Digital tachometer
3. Install:
● Timing light “1”
(onto the spark plug lead of cylinder #1)
4. Check:
● Ignition timing
Manufacturer/model
NGK/CR7E
Spark plug gap
0.7–0.8 mm (0.028–0.031 in)
Spark plug
13 Nm (1.3 m•kg, 9.4 ft•lb)
a
2
1
T
R
.
.
Timing light
90890-03141
Inductive clamp timing light
YU-03141
Timing light
90890-03141
Inductive clamp timing light
YU-03141
1
1
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