Service manual

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CHK
ADJ
SYNCHRONIZING THE CARBURETORS/
ADJUSTING THE ENGINE IDLING SPEED
NOTE:
After each step, rev the engine two or
three times, each time for less than a
second, and check the synchronization
again.
b. Synchronize carburetor #4 to carbure-
tor #3 by turning the synchronizing
screw 2 in either direction until both
gauges read the same.
c. Synchronize carburetor #2 to carbure-
tor #3 by turning the synchronizing
screw 3 in either direction until both
gauges read the same.
NOTE:
The difference in vacuum pressure
between two carburetors should not
exceed 1.33 kPa (10 mm Hg).
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8.Measure:
• engine idling speed
Out of specification → Adjust.
9.Stop the engine and remove the mea-
suring equipment.
10.Adjust:
• throttle cable free play
Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.
Vacuum pressure at engine
idling speed
29.3 kPa (0.293 kg/cm
2
, 220
mm Hg)
Throttle cable free play
(at the flange of the throttle
grip)
3 ~ 5 mm
EB303020
ADJUSTING THE ENGINE IDLING SPEED
NOTE:
Prior to adjusting the engine idling
speed, the carburetor synchronization
should be adjusted properly, the air filter
element should be clean, and the engine
should have adequate compression.
1.Start the engine and let it warm up for
several minutes.