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:

Balancer Installation
Position the crankshaft at #2, 3 positions TDC or at #1, 4 positions TDC. Install the balancer assembly as follows. Align the punch mark [A] on the weight and the projection [B] on the crankcase. Engage the balancer gear and the crankshaft gear. Insert the balancer shaft until it is bot ...

Radiator Cap Inspection
Remove: Radiator Cap (see Coolant Change in the Periodic Maintenance chapter) Check the condition of the bottom [A] and top [B] valve seals and valve spring [C]. If any one of them shows visible damage, replace the cap with a new one. Install the cap [A] on a cooling system pr ...

Brake Lever Adjuster
There is an adjuster on the brake lever. The adjuster has 6 positions so that the released lever position can be adjusted to suit the operator’s hands. Push the lever forward and turn the adjuster to align the number with the mark on the lever holder. The distance from the grip to the rel ...