Spark Plug Cap; Ignition Coil; Ac Magneto - Yamaha SRX700D Service Manual

SDN8050
2
W W
W
IGNITION SYSTEM

SPARK PLUG CAP

1. Remove:
2. Connect:
3. Measure:
SDN8040

IGNITION COIL

1. Disconnect:
2. Connect:
3. Measure:
SDN8060

AC MAGNETO

1. Disconnect:
2. Connect:
3. Measure:
SDN8070
Ω×1
– +
SDN8080
8-4
•
Spark plug cap
•
Pocket tester
(to the spark plug cap)
•
Spark plug cap resistance
Out of specification → Replace.
Spark plug cap resistance:
5 kΩ at 20˚C (68˚F)
•
Ignition coil lead
•
Spark plug lead
•
Pocket tester
(to the ignition coil and spark plug lead)
•
Primary coil resistance 1
•
Secondary coil resistance 2
Out of specification → Replace.
Primary coil resistance 1:
0.38 ~ 0.46 Ω at 20˚C (68˚F)
Secondary coil resistance 2:
5.8 ~ 7.0 kΩ at 20˚C (68˚F)
•
AC magneto coupler
•
Pocket tester
(to the AC magneto coupler)
•
Charge coil/pickup coil resistances
Out of specification → Replace.
Pickup coil resistance 1:
(White/Red – White/Green)
189 ~ 231 Ω at 20˚C (68˚F)
Charge coil resistance 2:
(White – White)
0.36 ~ 0.44 Ω at 20˚C (68˚F)
– +
ELEC