Checking The Spark Plug - Yamaha MT-03 Service Manual

2. Adjust:
• Throttle cable free play
NOTE:
When the throttle is opened, the accelerator
cable "1" is pulled.
Throttle body end
a. Loosen the locknut "2" on the accelerator cable.
b. Turn the adjusting nut "3" in direction "a" or
"b" until the specified throttle cable free play
is obtained.
Direction "a"
Throttle cable free play is increased.
Direction "b"
Throttle cable free play is decreased.
c. Tighten the locknut.
NOTE:
If the specified throttle cable free play cannot
be obtained on the throttle body end of the ca-
ble, adjust the free play at the handlebar end of
the cable using the adjusting nut.
Handlebar end
a. Loosen the locknut "1".
b. Turn the adjusting nut "2" in direction "a" or
"b" until the specified throttle cable free play
is obtained.
a
1
2
3

a

b
Direction "a"
Throttle cable free play is increased.
Direction "b"
Throttle cable free play is decreased.
1
c. Tighten the locknut.
WARNING
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.
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.
Spark plug type (manufacturer)
CR7E (NGK)
4. Check:
• Electrode "1"
Damage/wear
• Insulator "2"
Abnormal color
Normal color is medium-to-light tan.
3-6
ENGINE
b
a
2
Replace the spark plug.
Replace the spark plug.