76
use and maintenance
Rally 50
-
30!2+ 0,5'
Carefully read p. 53 (MAINTENANCE).
Check and clean the spark plug after the
first 312 mi (500 km). Change it every
2,500 mi (4,000 km).
Periodically remove the spark plug and
clean it carefully, removing carbon depos-
its; change it if necessary.
To reach the spark plug:
◆
Remove the inspection cover, see p. 72
(REMOVING THE INSPECTION COV-
ER) .
To remove and clean the spark plug:
a
WARNING
Before carrying out the following opera-
tions, let the engine and the exhaust si-
lencer cool down until they reach room
temperature, in order to avoid burns.
◆
Remove the spark plug cap (1).
◆
Using compressed air, blow all the dirt
away from the base of the spark plug.
Using the special spark plug wrench
from the tool kit, unscrew the spark plug.
Make sure that no dirt falls into the cylin-
der through the spark plug hole.
◆
Inspect the spark plug, and insure that
there are no carbon deposits nor corro-
sion marks on either electrode or the ce-
ramic nose that surrounds the center
electrode. If necessary, clean the spark
plug with a proprietary spark plug clean-
er, and a stainless steel brush.
◆
Using compressed air, carefully blow out
the spark plug after you have cleaned it.
Inspect for cracks on the insulating mate-
rial, electrode corrosion or erosion, or
deposits that you cannot remove.
If the spark plug shows any of these de-
fects, it must be replaced.
◆
Check the spark plug gap with a thick-
ness gauge.
◆
The gap must be
0.020 – 0.024 in (0.5 –
0.6 mm)
; if necessary adjust it, carefully
bending the ground (outside) electrode.
◆
Make sure the gasket is in good condi-
tion. With the gasket on, screw the spark
plug into the head by hand.
◆
Tighten the spark plug with the spark
plug wrench, approximately one-half turn
after it first snugly contacts the cylinder
head.
Spark plug tightening torque:
14.47 ftlb (20 Nm).
a
CAUTION
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 p. 91 (TECHNICAL DA-
TA), in order not to compromise the life
and performance of the engine.
◆
Position the spark plug cap (1) properly,
so that it does not come off due to the vi-
brations of the engine.
◆
Replace the inspection cover, see p. 72
(REMOVING THE INSPECTION COV-
ER).
Summary of Contents for RALLY 50
Page 1: ......
Page 8: ...8 use and maintenance Rally 50 0 3 4 4 7 2 3 6 3 ...
Page 10: ...10 use and maintenance Rally 50 9 10 11 Ref Description 12 13 14 Ref Description ...
Page 17: ...safe drive ...
Page 96: ...96 use and maintenance Rally 50 MPORTERS ...
Page 97: ...97 use and maintenance Rally 50 MPORTERS ...
Page 98: ...98 use and maintenance Rally 50 7 2 2 2ALLY ...
Page 100: ...100 4 3 2 5 30 2 0 243 9 use and maintenance Rally 50 ...
Page 101: ...101 4 3 2 5 30 2 0 243 9 use and maintenance Rally 50 ...
Page 102: ...102 4 3 2 5 30 2 0 243 9 use and maintenance Rally 50 ...
Page 103: ...103 4 3 2 5 30 2 0 243 9 use and maintenance Rally 50 ...