Service manual

ELECTRICAL COMPONENTS
7-100
c. Measure the secondary coil resistance.
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ET5YU1032
CHECKING THE IGNITION SPARK GAP
1. Check:
• Ignition spark gap
Out of specification → Perform the ignition
system troubleshooting, starting with step 5.
Refer to “TROUBLESHOOTING” on page
7-3.
NOTE:
If the ignition spark gap is within specification,
the ignition system circuit is operating normally.
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a. Disconnect the spark plug cap from the spark
plug.
b. Connect the ignition checker “1” as shown.
c. Turn the main switch to “ON” and engine stop
switch to “”.
d. Measure the ignition spark gap “a”.
e. Crank the engine by pushing the start switch
“” and gradually increase the spark gap un-
til a misfire occurs.
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EAS28120
CHECKING THE CRANKSHAFT POSITION
SENSOR
1. Disconnect:
• Crankshaft position sensor coupler
(from the wire harness)
2. Check:
• Crankshaft position sensor resistance
Out of specification → Replace the crank-
shaft position sensor.
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a. Connect the pocket tester (Ω × 100) to the
crankshaft position sensor coupler as shown.
b. Measure the crankshaft position sensor re-
sistance.
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EAS28130
CHECKING THE LEAN ANGLE CUT-OFF
SWITCH
1. Remove:
• Lean angle cut-off switch
• Positive tester probe →
black/red “1”
• Negative tester probe →
spark plug lead “2”
Minimum ignition spark gap
6.0 mm (0.24 in)
Ignition checker
90890-06754
Opama pet-4000 spark checker
YM-34487
2. Spark plug cap
Crankshaft position sensor
resistance
248–372 Ω/gray-black
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
gray “1”
• Negative tester probe →
black “2”
Gy
B
12