Checking The Spark Plug; Chas - Yamaha MBK YQ100 Service Manual

ADJUSTING THE THROTTLE CABLE FREE PLAY /

CHECKING THE SPARK PLUG

Handlebar side
a.Loosen the locknut.
b.Turn the adjusting nut in direction left or rught
until the specified throttle cable free play is
obtained.
Direction left
Direction right
c. Tighten the locknut.
After adjusting the throttle cable free play,
start the engine and turn the handlebar to the
right and to the left to ensure that this does
not cause the engine idling speed to change.
EAS00060
CHECKING THE SPARK PLUG
1.Disconnect:
• spark plug cap
2. Remove:
• spark plug
CAUTION:
Before removing the spark plug, blow away
any dirt accumulated in the spark plug well
with compressed air to prevent it from falling
into the cylinder.
3.Check:
• spark plug type
Incorrect → Change.
4.Check:
• electrodes
Damage/wear→ Replace the spark plug.
• insulator
Abnormal color → Replace the spark plug.
Normal color is medium-to-light tan.
3-13
Throttle cable free play is
increased.
Throttle cable free play is
decreased.
WARNING
Spark plug type (manufacturer)
BR8HS (NGK)
INSP
REG