CHAPTER 3A ENGINE 260/ 300 / 400 cc ATV SERVICE MANUAL09.0
CHAPTER 3 ENGINE PAGE. 3A- 11
4. Adjust:
z Engine idle speed
Adjustment steps:
zTurn the pilot screw c until it is lightly seated.
zTurn the pilot screw out by the specified
number of turns.
Pilot screw:
1
3
/
8
turn out
z Turn the throttle stop screw d in or out until
the specified idling speed is obtained.
Turning in → Idling speed is increased.
Turning out → Idling speed is decreased.
3.2.3SPARK PLUG INSPECTION
1.Remove :
z Spark plug cap
z Spark plug
CAUTION:
Before removing the spark plug, use
compressed air to blow away any dirt
accumulated in the spark plug wells to prevent it
from falling into the cylinder.
1. Check:
zSpark plug type
Incorrect Replace.
Standard spark plug:
DR8EA (NGK)
2.Inspect:
zElectrode c
Wear/ damage Replace.
zInsulator d
Abnormal color Replace.
Normal color is a medium - to- light tan color.
3.Clean:
zSpark plug
(with spark plug cleaner or wire brush)
4.Measure:
zSpark plug gap ③
(with a wire gauge)
Out of specification Adjust gap.
To Next Page
Loading...
Need help?
General
