Yamaha YP250 Mobility Scooter User Manual


 
3-12
THROTTLE CABLE ADJUSTMENT/
SPARK PLUG INSPECTION
INSP
ADJ
*****************************************************
CAUTION:
D Loosen the locknut
1
on the throttle cable.
D 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.
D Tighten the locknut.
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.
EB303040
SPARK PLUG INSPECTION
1. Remove:
D Spark plug cap
D Spark plug
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:
D Spark plug type
Incorrect ! Replace.
Standard spark plug:
DR8EA (NGK)
2. Inspect:
D Electrode
1
Wear/damage ! Replace.
D Insulator
2
Abnormal color ! Replace.
Normal color is a medium-to-light tan col-
or.
2. Clean:
D Spark plug
(with spark plug cleaner or wire brush)
3. Measure:
D Spark plug gap
a
(with a wire gauge)
Out of specification ! Adjust gap.