Yamaha YZF-R6, Service Manual

Page: 87 / 425

3-18
SYNCHRONIZING THE CARBURETORS/
ADJUSTING THE ENGINE IDLING SPEED
CHK
ADJ
NOTE:
NOTE:
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 carburetor #3
by turning the synchronizing screw 2 in ei-
ther direction until both gauges read the
same.
c. Synchronize carburetor #2 to carburetor #3
by turning the synchronizing screw 3 in ei-
ther direction until both gauges read the
same.
Vacuum pressure at engine
idling speed
24.0 kPa (0.24 kg / cm
2
)
The difference in vacuum pressure between
two carburetors should not exceed 1.33 kPa (10
mm Hg).
8. Measure:
engine idling speed
Out of specification
Adjust.
9. Stop the engine and remove the measuring
equipment.
10. Adjust:
throttle cable free play
Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.
Throttle cable free play
(at the flange of the throttle grip)
6 8 mm
EB303020
ADJUSTING THE ENGINE IDLING SPEED
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 com-
pression.
1. Start the engine and let it warm up for several
minutes.