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:

Handlebar Removal
Remove: Steering Damper (see Steering Damper Removal) Clutch Lever Clamp Bolts [A] Clutch Lever Assembly [B] Left Switch Housing [C] Handlebar Weight [D] Left Handlebar Grip [E] Remove: Front Master Cylinder [A] (see Front Master Cylinder Removal in the Brakes chapter) ...

Cylinder Head Warp Inspection
Clean the cylinder head. Lay a straightedge across the lower surface of the cylinder head at several positions. Use a thickness gauge [A] to measure the space between the straightedge [B] and the head. Cylinder Head Warp Standard: – – – Service Limit: 0.05 mm (0.0020 in.) ...

Break-in
The first 1 600 km (1 000 mi) that the motorcycle is ridden is designated as the break-in period. If the motorcycle is not used carefully during this period, you may very well end up with a “broken down” instead of a “broken in” motorcycle after a few thousand kilometers. The fol ...