Spark Plug Service - ST TRE 0701 Manuel D'utilisation

c) R emove the filtering element (3a + 3b).
d) R emove the pre-filter (3b) from the cartridge
(3a).
e) T ap the cartridge (3a) on a solid surface and
blow it from the inside with compressed air to
remove dust and debris.
f) W ash the sponge pre-filter (3b) with water and
detergent and leave it to dry in the air.
IMPORTANT
Do not use water, petrol,
detergents or any other products to clean the
cartridge.
IMPORTANT
The sponge pre-filter (3b)
must NEVER be oiled.
g) C lean the inside of the filter housing (4) from
dust and debris, making sure to block the inlet
duct with a rag (5) to prevent them from enter-
ing the engine.
h) R emove the rag (5), install the filtering element
(3b + 3a) in its housing and refit the cover (1).

6.6 SPARK PLUG SERVICE

a) Remove the spark plug (1) using a spark plug
socket wrench (2).
b) C lean the electrodes (3) with a metal brush
and remove any carbonaceous build-up.
c) U sing a thickness gauge (4), check for the
right gap (0.6 - 0.8 mm) between the elec-
trodes.
d) I nstall the spark plug (1) and tighten with a
socket wrench (2).
Replace the spark plug if the electrodes are burnt
or if the porcelain is broken or damaged.
WARNING!
the ignition system with spark plug re mo­
v ed.
IMPORTANT
Use only spark plugs of the
recommended type (see 8.1).
Fire hazard! Do not check
7
EN