±
104
Adjusting Idle Speed and Air-Fuel Mixture
Do not try to compensate for faults in other systems by adjusting the
carburetor.
To adjust the idle speed:
1,400
100 min (rpm)
To adjust the air-fuel mixture:
Turn the pilot screw ( ) clockwise until you hear the engine miss
or decrease in speed.
Then turn the screw counterclockwise until the engine misses or
decreases in speed again.
Center the pilot screw exactly between the two extreme positions.
Usually, the correct setting (between extremes of rich and lean)
will be found at
turns open from a fully closed position.
If idle speed changes after adjusting the fuel mixture, readjust the
throttle stop screw.
W a r m up th e
engine. The engine must be warm for
accurate idle adjustment. Ten minutes of stop-and-go riding is
sufficient.
Adjust idle speed by turning the throttle stop screw (Fig.
).
Idle Speed:
(1)
1.
2.
3.
4.
2
(1) Throttle stop screw
(2) Pilot screw
(2)
1.
2.
1-3/4
4-9
Fig. 4-9
01/04/28 16:39:17 3CHN5620_109
