169
continued
Ma
in
te
na
nce
Spark Plug
Changing Spark Plug
For the recommended spark plugs, see
“Specifications.”
2
Use only the recommended type of spark
plugs in the recommended heat range.
1.
Remove the left and right fog light
covers.
2
2.
Remove the left and right cylinder head
side covers.
2
3.
Disconnect the connectors from the
direct ignition coils.
4.
Remove the bolts and direct ignition
coils.
5.
Clean any dirt around the spark plug
bases.
6.
Remove the spark plugs using provided
spark plug wrench.
2
7.
Install new spark plugs. With the plug
washers attached, thread the spark
plugs in by hand to prevent cross-
threading.
8.
Tighten the spark plugs.
• Installing a new plug, tighten it twice
to prevent loosening:
a) First, tighten the plug:
1 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
NOTICE
Using a spark plug with an improper heat range can
cause engine damage.
Bolt
Direct ignition coil
Connector
Spark plug
Spark plug wrench
14 x 17 mm Box end wrench
NOTICE
An improperly tightened spark plug can damage the
engine. If a plug is too loose, a piston may be
damaged. If a plug is too tight, the threads may be
damaged.
20 GL1800 32MKC820.book 169 ページ 2019年9月20日 金曜日 午後3時9分
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