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 → ...

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Gear Position Switch Inspection
NOTE Be sure the transmission and external shift mechanism are good condition. Remove the fuel tank (see Fuel Tank Removal in the Fuel System (DFI) chapter). Disconnect the connector [A]. Set the hand tester [A] to the × 1 kΩ or × 100 Ω range and connect i ...

Throttle Control System Inspection
Check the throttle grip free play [A]. If the free play is incorrect, adjust the throttle cables. Throttle Grip Free Play Standard: 2 3 mm (0.08 0.12 in.) Check that the throttle grip [B] moves smoothly from full open to close, and the throttle closes quickly and completely by the ...