Kawasaki Ninja Service Manual: Spark Plug Condition Inspection

Kawasaki Ninja Service Manual / Electrical System / Ignition System / Spark Plug Condition Inspection

Remove the spark plugs (see Spark Plug Replacement in the Periodic Maintenance chapter).
Visually inspect the spark plugs.

If the spark plug center electrode [A] and/or side electrode [B] are corroded or damaged, or if the insulator [C] is cracked, replace the plug.

If the spark plug is dirtied or the carbon is accumulated, replace the spark plug.

Measure the gap [D] with a wire-type thickness gauge.

If the gap is incorrect, replace the spark plug.

Spark Plug Gap: 0.8 0.9 mm (0.031
0.035 in.)

Use the standard spark plug or its equivalent.

Spark Plug Condition Inspection

Standard Spark Plug Type: NGK CR9EIA-9

Stick Coil Primary Peak Voltage Inspection

NOTE Be sure the battery is fully charged. Remove the stick coils (see Stick Coil Removal). Do not remove the spark plugs. Connect the ECU to the harness. Measure the primary peak voltag ...

Interlock Operation Inspection

Raise the rear wheel off the ground with the stand [A]. 1st Check Start the engine to the following conditions Condition: Transmission Gear → 1st Position Clutch Lever → ...

Other materials:

Wheel Bearing Damage Inspection
Raise the front wheel off the ground with the jack (see Front Wheel Removal in the Wheels/Tires chapter). Special Tools - Jack: 57001-1238 Jack Attachment: 57001-1608 Turn the handlebar all the way to the right or left. Inspect the roughness of the front wheel bearing by moving [A] ...

Charging Voltage Inspection
Check the battery condition (see Charging Condition Inspection). Warm up the engine to obtain actual alternator operating conditions. Remove the front seat (see Front Seat Removal in the Frame chapter). Check that the ignition switch is turned off, and connect the hand tester [A] to t ...

Water Temperature Sensor Removal/Installation
NOTICE Never drop the water temperature sensor especially on a hard surface. Such a shock to the sensor can damage it. Remove the throttle body assy (see Throttle Body Assy Removal in the Fuel System (DFI) chapter). Drain the coolant (see Coolant Change in the Periodic Maintenance c ...