Testing Ignition Switches; Testing Electrical Resistances - Arctic Cat ZR 120 Service Manual

D. Defective tether

Testing Ignition Switches

1. Disconnect the engine wires from the main wiring
harness.
2. At the main wiring harness engine connector, connect
the red tester lead to the violet wire; then connect the
black tester lead to the engine ground (brown wire).
3. With the ignition switch in the RUN position, the emer-
gency stop switch in the ON position, and the tether
cord connected, the meter must read no resistance. If
the meter reads resistance, disconnect the ignition
switch from the main wiring harness. If the meter now
reads no resistance, replace the ignition switch.
4. If the meter continues to read resistance with the
ignition switch disconnected, disconnect the emer-
gency stop switch. If the meter now reads no resis-
tance, replace the emergency stop switch.
5. If the meter continues to read resistance with both
the ignition switch and the emergency stop switch
disconnected, disconnect the wires to the tether
switch. If the meter now reads no resistance,
replace the tether switch.
6. If the meter continues to read resistance with all
three switches disconnected, replace the main wir-
ing harness.
Testing Electrical
Resistances

NOTE: The following test procedure starts by testing
the resistance for the spark plug cap and working back
to the stator under the flywheel. Replace any compo-
nent that does not have a test value within specifica-
tions.
SPARK PLUG CAP
1. Remove the spark plug cap from the high tension
lead by rotating it counterclockwise.
2. Set the selector in the OHMS position.
34
3. Connect one tester lead to one end of the cap and
the other tester lead to other end of the cap.
4. Spark plug cap resistance must be between 4000-
6000 ohms.
MAGNETO
1. Disconnect the two white wires from the main har-
ness.
2. Set the meter selector to the OHMS position; then
connect the red and black tester leads to each of
the two white wires.
3. The meter must show less than 1 ohm.
EXTERNAL COIL
Primary
725-704A
1. Disconnect the single black/white wire lead of the
coil from the main harness.
2. Set the meter selector to the OHMS position; then
connect the red tester lead to the black/white wire
and the black tester lead to the metal post of the
coil.
3. Resistance must be within 11.25-11.75k ohms.
Secondary
1. Remove the spark plug end cap from the high ten-
sion lead of the coil.
2. Set the meter selector to the OHMS position; then
connect the red lead of the tester to the high ten-
sion lead fo the coil and the black tester lead to
ground.
3. Resistance must be within 6000-7000 ohms.
LIGHTING COIL
1. Disconnect the two yellow wires from the main
wiring harness.
2. Set the selector to the OHMS position.
3. Connect the tester leads to the two yellow leads on
the engine-side connectors.
4. Lighting coil resistance must be between 0.46-
0.68 ohm.
B170