Spark Plug Inspection - Yamaha SR125 1997 Service Manual

THROTTLE CABLE ADJUSTMENT/

SPARK PLUG INSPECTION

3-7
: Loosen the locknut 1 on the throttle cable.
: Turn the adjuster 2 in or out until specified
free play is obtained.
Turning in ! Free play is increased.
Turning out ! Free play is decreased.
: Tighten the locknut.
WARNING
After adjusting, turn the handlebar to the
right and to the left to ensure that this does
not cause the engine idling speed to
change.
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EB303040
SPARK PLUG INSPECTION
1. Remove:
: Spark plug cap
: Spark plug
CAUTION:
Before removing the spark plug, use com-
pressed air to blow away any dirt accumu-
lated in the spark plug wells to prevent it
from falling into the cylinder.
1. Check:
: Spark plug type
Incorrect ! Replace.
Standard spark plug:
DR8EA (NGK)
2. Inspect:
: Electrode 1
Wear/damage ! Replace.
: Insulator 2
Abnormal color ! Replace.
Normal color is a medium-to-light tan color.
3. Clean:
: Spark plug
(with spark plug cleaner or wire brush)
4. Measure:
: Spark plug gap a
(with a wire gauge)
Out of specification ! Adjust gap.
Spark plug gap:
0.6 0.7 mm
INSP
ADJ