Yamaha Raptor 90 YFM90RA 2011 Service Manual page 216

EBS01038
4. Ignition coil resistance
• Disconnect the ignition coil connectors
from the ignition coil terminals.
• Connect the pocket tester (Ω × 1) to the
ignition coil as shown.
Positive tester probe → black terminal
Negative tester probe → green terminal
2
• Measure the primary coil resistance.
Primary coil resistance
0.19 ~ 0.23 Ω at 20 °C (68 °F)
• Connect the pocket tester (Ω × 1k) to the
ignition coil as shown.
Positive tester probe → spark plug lead
Negative tester probe → green terminal
2
3
• Measure the secondary coil resistance.
Secondary coil resistance
2.79 ~ 3.41 kΩ at 20 °C (68 °F)
• Is the ignition coil OK?
YES
1
2
1
3
2
NO
Replace the ignition
coil.
7 - 7
IGNITION SYSTEM
EBS01041
5. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
EBS01042
6. Engine stop switches
• Check the engine stop switches for conti-
nuity.
Refer to "CHECKING THE SWITCHES".
• Are the engine stop switches OK?
YES
ELEC – +
NO
Replace the main
switch.
NO
Replace the handle-
bar switch or engine
stop switch (frame).