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Ignition Coil Inspection; Spark Plug Removal, Installation - Kawasaki ZR-7S Service Manual

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14-34 ELECTRICAL SYSTEM
Ignition System
Ignition Coil Inspection
• Remove the ignition coils.
• With the spark plug caps left attached, connect the igni-
tion coil [8] to the tester [A] to measure the arcing dis-
tance.
A
WARNING
To avoid extremely high voltage shocks, do not
touch the coil body or leads.
*
If the distance reading is less than the specified value, the
ignition coil or spark plug caps are defective.
Ignition Coil Arcing Distance
Standard:
7 mm (0.28 in.) or more
• Remove the spark plug caps to measure the arcing dis-
tance again.
*11 the arcing distance is subnormal as before, replace the
ignition coil.
*
If the arcing distance is now normal, replace the spark
plug caps
NOTE
Off the coil tester is unavailable, the internal resistance
of the ignition coil can be checked with
a
hand tester.
However, this inspection is not sufficient to determine
whether or not the coil is defective.
A
.., ..... " c
• Remove the spark plug caps and measure the resistance
as shown on the right.
OSet the hand tester to the x 1 Q range and measure [A]
the resistance of the primary windings.
OSet the hand tester to the x 1 kQ range and measure [8]
the resistance of the secondary windings. Ignition Coil [C]
*If the measurement is out of standard, replace the ignition
coil.
Ignition Coil Resistance
Standard:
Primary windings 2.61 - 3.19
n
Secondary windings 13.5 -16.5 kO:
• Visually inspect the secondary wire.
*
If it is damaged, replace the ignition coil.
OTo install the spark plug caps, turn them in clockwise.
Spark Plug Removal, Installation
• Take out the spark plug cap and remove the spark plug.
Owner's Tool-Spark Plug Wrench: 92110-1130 [A]
Special Tool- Spark Plug Wrench: 57001-1024
• Install the spark plug and tighten it to the specified torque.
Torque - Spark Plug: 14 N·m (1.4 kgf·m, 10 ft·lb)
• Fit the plug caps securely.
• Pull up the spark plug caps lightly to make sure of the
installation of the spark plug caps.

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