Maintenance
81
plug because heat and deposits will cause
the spark plug to slowly break down and
erode.
To remove the spark plug
1. Remove the flywheel magnet cover after
removing the bolt.
2. Remove the ECM (Electronic Control
Module) cover.
3. Remove the bolt that is securing the ig-
nition coil, and then remove the ignition
coil.
NOTICE:
Do not use any tools to
remove or install the ignition coil.
Otherwise, the ignition coil coupler
could be damaged.
[ECM02331]
4. Remove the spark plug.
WARNING!
When removing or installing a spark
plug, be careful not to damage the in-
sulator. A damaged insulator could
allow external sparks, which could
lead to explosion or fire.
[EWM00562]
To check the spark plug
1. Check the condition of the spark plug. If
electrode erosion becomes excessive or
carbon and other deposits are exces-
sive, replace the spark plug with the
specified plug.
2. Measure the spark plug gap using a
thickness gauge. If the spark plug gap is
out of specification, replace the spark
1. Flywheel magnet cover
2. Bolt
1. ECM (Electronic Control Module) cover
1
2
ZMU06971
1
ZMU06947
1. Bolt
2. Ignition coil
Standard spark plug:
LFR6A-11
2
1
1
2
1
1
1
1
2
2
2
2
ZMU06973
ZMU0694
8
6CB-9-3B-1E0.book 81 ページ 2017年11月16日 木曜日 午後5時29分
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2019 Yamaha Motor Corporation, U.S.A.