Honda CX500 1978 Shop Manual page 46

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HONDA
FUEL SYSTEM
PILOT SCREW INITIAL SETTING
,
-
NOTE
I
The pilot screw is factory preset. Do not
I
adjust unless the carburetor is overhauled.
I
Turn the pilot screw clockwise until it seats
lightly and back it out to the specification. This
is a preliminary setting prior to the final pilot
screw adjustment.
PILOT SCREW' INITIAL OPENING: 2 turns
if the pilot screw is tightened.
PILOT SCREW ADJUSTMENT
NOTE
Use a tachometer with graduations of
100 rpm.
1. Warm up the engine to operating temper-
ature.
Stop and go driving for approximately 10
minutes is sufficient.
2. Attach a tachometer.
3. Adjust the idle speed with the throttle stop
screw.
IDLE SPEED: 1.100i 100rpm
4. Turn the pilot screw in or out to obtain the
highest engine speed.
5. Readjust the idle speed with the throttle
stop screw.
6. Turn the pilot screw in gradually until the
engine speed drops 100 rpm.
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7. Turn the pilot screw 1 turns open from the
position obtained in step
6.
8. Readjust the idle speed with the throttle
stop screw.
NOTE
Perform steps 4 thru 8 for the remaining
carburetor.
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NOTE
1
If the pllot screw seats before lowerlng
I
,
the engine speed 100rpm, continue to
steo 7.
HIGH ALTITUDE ADJUSTMENT
The carburetor idle speed may have to be re-
adjusted for high altitude riding above 2,000 m
(6,500 ft).
IDLE SPEED: 1.100
+
100 rpm
NOTE
Readjust the pilot screw if the engine
idles rough, misses or stalls.
LE STOPS CREW
4-10
Date of Issue: January, 1978
OHONDA MOTOR CO., LTD.
B