Yamaha RX10LTGTYL Service Manual page 1048

CARBURETOR SYNCHRONIZATION
2-15
NOTE:
After each step, rev the engine two or three
times, each time for less than a second, and
check the synchronization again.
S Synchronize carburetor #4 to carburetor #3 by
turning the synchronizing screw 2 in either
direction until both gauges read the same.
S Synchronize carburetor #2 to carburetor #1 by
turning the synchronizing screw 3 in either
direction until both gauges read the same.
Vacuum pressure at engine
idling speed
35 kPa (0.35 kg/cm
NOTE:
The difference in vacuum pressure between
two carburetors should not exceed 1.33 kPa
2
(0.01 kg/cm , 0.19 psi).
6. Measure:
S Engine idle speed
Out of specification ! Adjust.
7. Adjust:
S Throttle cable free play
Refer to "THROTTLE CABLE FREE PLAY
ADJUSTMENT".
INSP
ADJ
2
, 4.98 psi)