Checking The Spark Plug - Yamaha 2010 XMAX YP125R Service Manual

Throttle cable free play
3.0–5.0 mm (0.12–0.20 in)
2. Adjust:
• Throttle cable free play
M MMM M MMM M M MMM M
a. Slide back the rubber cover "1".
b. Loosen the locknut "2".
c. 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.
d. Tighten the locknut.
e. Slide the rubber cover to its original position.
EWA12910
WARNING
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.
L LLL L LLL L L LLL L
EAS20690

CHECKING THE SPARK PLUG

1. Disconnect:
• Spark plug cap "1"
a
M MMM M M MMM M M MMM M
a
b
2 3 1
L LLL L L LLL L L LLL L
2. Remove:
• Spark plug
ECA13330
NOTICE
Before removing the spark plug, blow away
any dirt accumulated in the spark plug well
MMM
with compressed air to prevent it from falling
into the cylinder.
3. Check:
• Spark plug type
Incorrect → Change.
4. Check:
• Electrode "1"
Damage/wear → Replace the spark plug.
• Insulator "2"
Abnormal color → Replace the spark plug.
Normal color is medium-to-light tan.
5. Clean:
• Spark plug
(with a spark plug cleaner or wire brush)
6. Measure:
• Spark plug gap "a"
(with a wire thickness gauge)
Out of specification → Regap.
LLL
7. Install:
• Spark plug
3-24
ENGINE (YP250R)
1
Manufacturer/model
NGK/DPR8EA-9
Spark plug gap
0.8–0.9 mm (0.031–0.035 in)