JETSURF ADVENTURE DFI PLUS - Spark Plug Check and Replacement

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DFI003/EN_part A
MAINTENANCE
In order to ensure proper engine operation, the spark plug must be placed correctly between the
electrodes and it must be kept clean.
CHECK OF THE SPARK PLUG
When the spark plug is removed, you can check it visually. If the insulator is highly worn or if you can
see any scratches or cracks on it, replace the spark plug.
Using a shim gauge, you can measure the gap between the electrodes of the spark plug. For NGK BPR
7HS this gap should be 0.7 – 0.8 mm.
SPARK PLUG REPLACEMENT
Warning – high voltage on the spark plug boot.
Never remove the boot from the spark plug when the ignition is switched
on (the indicator is not on or ashing).
Do not remove the boot from the spark plug if there is water in the en-
gine compartment.
When working in the engine compartment, DO NOT to handle re.
After the boot has been removed from the spark plug, NEVER START THE
ENGINE – if the engine was started without a mounted spark plug boot,
it would damage the control unit.
PROCEDURE:
– Before every assembly, remove the tank: disconnect the thoses and undo the velcro with
which the tank is attached.
– Check the engine, of it is not too hot. We recommend performing the assembly minimum
0.5 hours after the engine was switched o.
– Check whether the ICU control unit is not on (the indicator is not lit or ashing)!
Required tools: spark plug spanner supplied by the manufacturer (accessories) - 21 mm.
1) Take o the holder from the spark plug boot – FIGURE 1.
2) Remove the spark plug boot – FIGURE 2.
3) Screw the spark plug out using a spark plug spanner – FIGURE 3 and 4.
WARNING
Insulator
Electrode
0,7–0,8 mm