Checking The Spark Plug - Yamaha T135SE Service Manual

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Yamaha T135 Service Manual

CHECKING THE SPARK PLUG

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EAS00060
CHECKING THE SPARK PLUG
1. Remove:
9side cowling (right)
Refer to "REMOVING THE SIDE COWL-
INGS".
9AIS resonator
cC
Be sure to remove the AIS hose, before
removing the AIS resonator, otherwise to
brake the AIS resonator mount.
2. Disconnect:
9spark plug cap
3. Remove:
9spark plug
cC
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.
4. Check:
9spark plug type
Incorrect → Change.
Spark plug type (manufacturer)
CPR8EA-9 (NGK)
5. Check:
9electrode 1
Damage/wear → Replace the spark plug.
9insulator 2
Abnormal color → Replace the spark plug.
Normal color is medium-to-light tan.
6. Clean:
9spark plug
(with a spark plug cleaner or wire brush)
7. Measure:
9spark plug gap a
(with a wire thickness gauge)
Out of specification → Regap.
Spark plug gap
0.8–0.9 mm (0.031–0.035 in)
CHK
ADJ