Yamaha YFM90RA Model Vehicle User Manual


 
7 - 8
+
ELEC
IGNITION SYSTEM
EBS01040
YES
NO
EBS01099
YES
NO
EBS01047
YES
NO
7. Pickup coil resistance
Disconnect the C.D.I. magneto coupler
from the wire harness.
Connect the pocket tester ( 100) to the
pickup coil terminal as shown.
Positive tester probe
white/black terminal
Negative tester probe
white/red terminal
Measure the pickup coil resistance.
Pickup coil resistance
94 ~ 140 at 20 °C (68 °F)
(between white/red and white/
blue)
Is the pickup coil OK?
Replace the pickup
coil/stator assembly.
8. Source coil resistance
Disconnect the C.D.I. magneto coupler
from the wire harness.
Connect the pocket tester ( 100) to the
source coil terminal.
Positive tester probe
black/green terminal
Negative tester probe
black/red terminal
Measure the source coil resistance.
Source coil resistance
640 ~ 960 at 20 °C (68 °F)
(black/red and green/white)
Replace the pickup
coil/stator assembly.
9. Wiring
Check the entire ignition system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
Is the ignition system’s wiring properly
connected and without defects?
Replace the C.D.I.
unit.
Properly connect or
repair the ignition
system’s wiring.
1
1
1
2
2
2
W
W
W /R
B/R B/G
W/B
1
2
W
W
W /R
B/R B/G
W/B
× ×