Checking The Spark Plugs - Yamaha YZF-R1P Service Manual

ADJUSTING THE THROTTLE CABLE FREE PLAY/

CHECKING THE SPARK PLUGS

Direction a
Direction b
d. Tighten the locknut.
_
After adjusting the throttle cable free play,
start the engine and turn the handlebars to
the right and to the left to ensure that this
does not cause the engine idling speed to
change.
L LLL
4. Install:
• air filter case
Refer to "AIR FILTER CASE".
• fuel tank
Refer to "FUEL TANK".
• rider seat
Refer to "SEATS".
EAS00059
CHECKING THE SPARK PLUGS
The following procedure applies to all of the
spark plugs.
1. Remove:
• rider seat
Refer to "SEATS".
• fuel tank
Refer to "FUEL TANK".
• air filter case
• ignition coil plates
• rubber baffle
Refer to "AIR FILTER CASE".
2. Remove:
• ignition coil
• spark plug
CAUTION:
_
Before removing the spark plugs, blow
away any dirt accumulated in the spark
plug wells with compressed air to prevent it
from falling into the cylinders.
3. Check:
• spark plug type
Incorrect → Change.
3 - 19
CHK
ADJ
Throttle cable free play
is increased.
Throttle cable free play
is decreased.
WARNING
L LLL L L LLL L L LLL L L LLL
Spark plug type (manufacturer)
CR9EIA 9 (NGK)
IU27D (DENSO)
L L LLL L LLL