- Operating on both sides of the scooter, undo the
screws «B».
- Remove the inspection cover «C» by pulling it
upwards.
- Disconnect the cap «D» from the spark plug HV
wire.
- Unscrew the spark plug using the wrench sup-
plied.
- Check the conditions of the spark plug, make
sure the insulation is intact and the electrodes are
not excessively worn or sooty, check the condi-
tions of the sealing washer and measure the elec-
trode gap using the appropriate thickness gauge.
- If necessary, adjust the gap by bending the side
electrode very carefully. In case of anomaly (as
described before), replace the spark plug with an-
other one of the recommended type.
CAUTION
THE SPARK PLUG MUST BE REMOVED WHEN THE EN-
GINE IS COLD. CHECK AND REPLACE THE SPARK PLUG
AS INDICATED IN THE SCHEDULED MAINTENANCE TA-
BLE. USING NON-COMPLYING IGNITION CONTROL
UNITS OR SPARK PLUGS OTHER THAN THOSE PRESCRI-
BED MAY SERIOUSLY DAMAGE THE ENGINE.
Characteristic
Spark plug
CHAMPION RG4HC
Alternative spark plug
NGK CR8EB
Electrode gap
0.7 ÷ 0.8 mm
Locking torques (N*m)
Carnaby 125 - 200 Maintenance
MAIN - 45
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