Spark Plug - APRILIA SCARABEO50 I.E.-100 4T Manual Del Usuario

SPARK PLUG

Carefully read page 47 (MAINTENANCE).
Check the spark plug after the first 500 km
(312 mi), and change every 4000 km (2500
mi).
100
Check or change the spark plug every 8000
km (5000 mi).
Periodically remove the spark plug and clean
it carefully, removing carbon deposits;
change it if necessary.
To gain access to the spark plug:
♦
Remove the inspection cover, see page 65
(REMOVING THE INSPECTION COVER).
To remove and clean the spark plug:
♦
Remove the spark plug cap (1).
♦
Remove all the dirt from the base of the
spark plug, then unscrew it with the span-
ner you will find in the tool kit and extract it
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100
1
from its seat, taking care that neither dust
nor other substances enter the cylinder.
♦
Make sure that there are neither carbon
deposits, nor corrosion marks on the elec-
trode 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.
♦
Energetically blow some air, in order to pre-
vent the removed residues from getting into
the engine. If the spark plug has crackings
on the insulating material, corroded elec-
trodes or excessive deposits, it must be
changed.
♦
Check the spark plug gap with a thickness
gauge. The gap must be 0.5 - 0.6 mm; if
necessary adjust it, carefully bending the
earth electrode.
♦
Make sure that the washer is in good con-
ditions. With the washer on, screw the
spark plug by hand in order not to damage
the thread.
1
♦
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 (2.0 kgm)
The spark plug must be well tightened,
otherwise the engine may overheat and
be seriously damaged.
Use the recommended type of spark plug
only, see page 86 (TECHNICAL DATA), in
order not to compromise the life and per-
formance of the engine.
♦
Connect the spark plug pipe (1).
♦
Keep the pipe in the same position as
before its disassembly.
♦
Refit the inspection cover, page 65 (RE-
MOVING THE INSPECTION COVER).
use and maintenance Scarabeo 50
CAUTION
- Scarabeo 100 4T 71