6 - 9
Periodic maintenance and adjustment
EN
6
Checking the spark plugs
The spark plugs are important engine
components, which should be checked
periodically, preferably by a Benelli dealer.
Since heat and deposits will cause any
spark plug to slowly erode, they should
be removed and checked in accordance
with the periodic maintenance and lubri-
cation chart. In addition, the condition of
the spark plugs can reveal the condition
of the engine.
The porcelain insulator around the center
electrode of each spark plug should be a
medium-to-light tan (the ideal color when
the vehicle is ridden normally), and all
spark plugs installed in the engine should
have the same color.
If any spark plug shows a distinctly diffe-
rent color, the engine could be operating
improperly.
Do not attempt to diagnose such pro-
blems yourself. Instead, have a Benelli de-
aler check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other de-
posits, it should be replaced.
Before installing a spark plug, the spark
plug gap should be measured with a wire
thickness gauge and, if necessary, adju-
sted to specification.
Clean the surface of the spark plug gasket
and its mating surface, and then wipe off
any grime from the spark plug threads.
TIP
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn past
finger tight.
However, the spark plug should be tighte-
ned to the specified torque as soon as
possible.
NOTE
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Specified spark plug:
NGK CR8E
1
1. Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.027 - 0.031 in)
Tightening torque:
15 N·m (1.5 kgf·m, 11 lb·ft)
1
1
Summary of Contents for 302R 2017
Page 3: ......
Page 9: ......
Page 41: ...5 4 IT 5 Utilizzo e punti importanti relativi alla guida NOTE ...
Page 91: ...NOTE ...
Page 93: ......
Page 99: ......
Page 104: ...Safety information EN 1 1 5 NOTE ...
Page 131: ...5 4 Operation and important riding points EN 5 NOTE ...
Page 139: ...6 8 Periodic maintenance and adjustment EN 6 NOTE ...
Page 173: ...8 4 Specifications EN 8 Electric System ...
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Page 189: ......
Page 221: ...5 4 Utilisation et conseils importants concernant le pilotage FR 5 NOTE ...
Page 263: ...8 4 Caractéristiques FR 8 Installation electrique ...
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Page 279: ......
Page 311: ...5 4 Wichtige Fahr und Bedienungshinweise DE 5 NOTE ...
Page 355: ...8 4 Technische Daten DE 8 Elektrische Anlage ...
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Page 371: ......
Page 403: ...5 4 Utilización y puntos importantes para la conducción ES 5 NOTE ...
Page 445: ...8 4 Especificaciones ES 8 Electric System ...
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