Spark Plugs - APRILIA RSV MILLE - REGULAR SERVICE Manual

Carefully read p. 55 (MAINTENANCE).
Check the spark plugs every 7500 km
(4687 mi), change them every 15000 km
(9375 mi).
In case of use on racetracks, change the
spark plugs every 3750 km (2343 mi).
Periodically remove the spark plugs and
clean them carefully, removing carbon de-
posits; change them if necessary.
To reach the spark plugs:
N
Lift the fuel tank, see p. 70 (LIFTING
THE FUEL TANK).
NOTE
The vehicle is equipped with two
spark plugs per cylinder. The following op-
erations refer to one spark plug only, but
are valid for both.
To remove and clean the spark plug,
proceed as follows:
N
Remove the cap (1) of the spark plug (2).
N
Remove any trace of dirt from the spark
plug base.
N
Introduce the special spanner provided
in the tool kit on the spark plug.
N
Insert the 13 mm fork spanner provided
in the tool kit in the hexagonal seat of the
spark plug spanner.
N
Unscrew the spark plug and extract it
from its seat, taking care to prevent dust
or other substances from getting inside
the cylinder.
N
Make sure that there are neither carbon
deposits, nor corrosion marks on the
electrode and on the central porcelain
part; if necessary, clean them with the
special cleaners for spark plugs, with an
iron wire and/or a metal brush.
N
Energetically blow some air, in order to
prevent the removed residues from get-
ting into the engine.
If the spark plug has crackings on the in-
sulating material, corroded electrodes or
excessive deposits, it must be changed.
N
Check the spark plug gap with a thick-
ness gauge.
The gap must be 0.6 – 0.7 mm; if neces-
sary adjust it, carefully bending the earth
electrode.
N
Make sure that the washer is in good
conditions.
N
Position the spark plug in its seat.
N
Screw the spark plug manually, using the
spanner provided in the tool kit.
N
Tighten the spark plug by means of the
spanner you will find in the tool kit, giving
it half a turn to compress the washer.
Spark plug driving torque:
20 Nm (2 kgm).
CAUTION
The spark plug must be well tightened,
otherwise the engine may overheat and
be seriously damaged.
Use the recommended type of spark
plugs only, see p. 98 (TECHNICAL DA-
TA), in order not to compromise the life
and performance of the engine.
N
Position the spark plug cap (1) properly,
so that it does not come off due to the vi-
brations of the engine.
N
Put back the fuel tank, see p. 70 (LIFT-
ING THE FUEL TANK).
use and maintenance RSV mille - RSV mille R
85