Cleaning And Replacing The Spark Plugs - Ducati 996 Owner's Manual

Viscosity
SAE 20W-50
The other viscosity degrees indicated in the table can be
used if the local average temperature is within the limits
specified for that oil viscosity.
E
10W
20W
20
20W–40
15W–40 15W–50
10W–40
10W–30
–10 0
54
30
40
20W–50
10 20 30
Cleaning and replacing the spark plugs (fig. 42)
Spark plugs are essential to smooth engine running and
should be checked at regular intervals. This is done quite
easily and quickly and provides a good measure of engine
condition.
Remove the l.h. body panel, remove the spark plug caps
from the cylinder head using the wrench supplied with
the motorcycle.
Check the color of the insulating ceramic material of the
central electrode: a light brown, even color is a sign of
good engine condition. If color has altered or you find any
dark deposits, change the spark plug and report this to a
Ducati Dealer or Authorized Workshop.
Check wear on the central electrode. If it looks worn out
or has a vitreous appearance, change the spark plug.
Check electrode gap: it should be 0.6 mm/0.023 in.
Important
If the gap needs adjusting, be very careful when
bending the side electrode. If gap is too wide or too
close, engine performance will be affected. This could
also cause difficult starting or irregular idling.
Clean the electrode and the insulating material accurately
using a small metal brush and check seal condition.
Clean the seat in the cylinder head. Be careful not to let
any foreign matters fall into the combustion chamber.
Refit spark plug into cylinder head. Snug it finger-tight
until it is fully seated into the head. Tighten the spark plug
to 20 Nm/14.7 ft.lbs.
40°C