Cub Cadet Challenger 500, Service Manual

Page: 210 / 244

Electrical
6 ‐ 12
Fuses (Main, Ignition)
Replace with a new fuse
Check the charged condition of the battery
open circuit voltage
12.8 V or more
Clean the battery terminals and recheck
open circuit voltage.
Charge or replace the battery.
Troubleshooting
No spark or intermittent spark (ignition circuit)
Procedure:
Check:
1) Fuses (main, ignition)
2) Battery
3) Spark plug
4) Ignition spark cap
5) Spark plug cap resistance
6) Ignition coil resistance
7) Main switch
8) Pickup coil resistance
9) Rotor pickup coil resistance
10) Wiring connections (the entire Ignition circuit).
No Continuity
C
ontinuity
Incorrect
C
orrect
Out of specification
or no spark
Check the condition of the spark plug.
Is it the proper plug and is the gap
correct.
Disconnect the spark plug cap.
Attach the ignition spark tester.
Turn the main switch on.
Crank the engine while looking at the
tester.
Minimum spark gap
6.0mm (0.24 in)
Repair or replace the spark plug
The ignition system is not faulty.
Incorrect
Meets Specification