Checking The Ignition Spark Gap; Checking The Crankshaft Position Sensor; Checking The Lean Angle Cut-Off Switch - Yamaha MT-01 T 2005 Service Manual

• Positive tester probe →
black/red "1"
• Negative tester probe →
spark plug lead "2"
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.
Minimum ignition spark gap
6.0 mm (0.24 in)
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.
Ignition checker
90890-06754
Opama pet-4000 spark checker
YM-34487
2. Spark plug cap
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ELECTRICAL COMPONENTS
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-
LLL
shaft position sensor.
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a. Connect the pocket tester (Ω × 100) to the
crankshaft position sensor coupler as shown.
• Positive tester probe →
gray "1"
• Negative tester probe →
MMM
black "2"
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
7-100
".
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Crankshaft position sensor
resistance
248–372 Ω/gray-black
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Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Gy
B
2 1
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