Cleaning and replacing the spark plugs
Spark plugs are essential to smooth engine running
and should be checked at regular intervals.
This is a relatively simple operation and provides a
good indication of how well the engine is running.
Pull the spark plug caps off the spark plugs and
remove the plugs from the cylinder heads using the
wrench supplied in the toolkit.
Check the colour of the ceramic insulator around the
central electrode: a uniform light brown colour
indicates good engine condition.
If the insulation is any other colour, or if there are dark
deposits, replace the spark plug and describe the
condition of the old plug to a Ducati dealer or
Authorized Service Centre.
Also check the central electrode; if it is worn or
glazed, replace the spark plug.
Check the distance between the electrodes, which
must be: 0.7÷0.8 mm.
Fig. 114
Important
If adjustment is required, bend the side
electrode carefully. A gap outside the specified limits
will adversely affect engine performance and may
lead to difficult starting or erratic idling.
Thoroughly clean the electrode and insulation using a
wire brush, and check the condition of the gasket.
Carefully clean the seat in the cylinder head and be
careful not to let any foreign material fall into the
combustion chamber.
143
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