Spark plug
To inspect the spark plug the engine must be cold;
proceed as follows:
- Remove the saddle after loosening the knob lo-
cated into the rear trunk.
- Remove the spark plug cap.
- Using the supplied spanner (provided with retain
rubber cap), remove the spark plug.
- Disconnect the spark plug lug and remove it.
- Inspect it carefully; if the insulator is damaged or
chipped, replace it.
- Measure the distance between the electrodes
using a thickness gauge, if required, adjust it by
carefully bending the external electrode.
- Make sure that the sealing washer is in good
working order.
MSS X9 Evolution 250 Maintenance
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