Spark Plug - APRILIA SCARABEO 500 Manual Del Usuario

1

SPARK PLUG

R e a d p a g e 4 1 ( M A I N T E N A N C E )
carefully.
Check the spark plug every 6000 km (3750
mi) and change it every 12000 Km (7500
mi).
At regular intervals, remove the spark plug
and clean off any carbon deposits or
replace as required.
In order to gain access to the spark plug:
◆
Remove the inspection covers, see page
55 (REMOVING THE RIGHT AND LEFT
INSPECTION COVERS) and work from
the left side of the vehicle.
58
use and maintenance Scarabeo 500
All manuals and user guides at all-guides.com
0,7-0,8 mm 0,7-0,8 mm
Removal and cleaning:
WARNING
Allow the engine and muffler to cool
down completely before proceeding.
◆
Pull the HT cable cap (1) off the spark plug.
◆
Remove any traces of dirt from the spark
plug base. Fit the suitable spark plug tool
(supplied with the tool kit) to the spark
plug. Unscrew and extract the spark
plug. Ensure that no dust or foreign
matter fall into the cylinder.
◆
Check electrode and insulating material
for carbon deposits or corrosion. Clean
off deposits with a metal wire or wire
brush, if needed.
◆
Blow with an air line to prevent residue
from entering the engine. A spark plug
must be changed when: the insulator is
cracked; the electrodes show traces of
corrosion or exceeding deposits.
◆
Check the electrode gap with a feeler
gauge. Electrode gap should be 0.7 - 0.8
mm. If it needs adjusting, bend the earth
electrode carefully.
◆
Make sure the washer is in good condition.
Fit the washer and screw the spark plug
finger-tight to avoid damaging the thread.
◆
Tighten using the supplied tool. Screw in
the spark plug by one half turn to
compress the washer.
Spark plug torque wrench setting:
12 -14 Nm (1.2 -1.4 kgm).
CAUTION
It is essential to tighten the spark plug
properly. A loose spark plug will cause
engine overheating and result in severe
damage.
Replace with recommended spark
plugs only. See page 71 (TECHNICAL
DATA). Using a spark plug other than
specified might compromise engine
performance and life.
◆
Refit the spark plug cap securely onto
the spark plug, so that it will not work
itself loose when exposed to engine
vibration.
◆
Refit the right inspection cover, see page
55 (REMOVING THE RIGHT AND LEFT
INSPECTION COVERS).