85
use and maintenance Pegaso 650 I.E.
aCAUTION
When changing the spark plug, check
the thread pitch and length.
If the threaded part is too short, the car-
bon deposits will accumulate on the
thread seat, and therefore the engine
may be damaged during the installation
of the right spark plug.
Use the recommended type of spark
plugs only, see p. 101 (TECHNICAL DA-
TA), in order not to compromise the life
and performance of the engine.
◆ Check the spark plug gap with a thick-
ness gauge.
The spark plug gap must be 0,6 – 0,7
mm; if necessary, adjust it, bending the
centre electrode (6) with care.
◆ Make sure that the washer (7) is in good
conditions.
For the installation:
◆ With the washer on (7), screw the spark
plug by hand in order not to damage the
thread.
◆ 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).
aCAUTION
The spark plug must be well tightened,
otherwise the engine may overheat and
be seriously damaged.
aCAUTION
Make sure that the cap (1) is correctly
connected to the spark plug (2). Due to
the vibrations of the engine, the incor-
rect position would cause the discon-
nection of the spark plug cap, with seri-
ous damage to the engine.
◆ Correctly insert the cap (1) in the spark
plug (2), until you hear the click.
◆ Put back the fuel tank, see p. 72 (RE-
MOVAL OF THE FUEL TANK).
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