Yamaha RX10LTGTYL Service Manual page 195

SYNCHRONIZING THE THROTTLE BODIES
7. Adjust:
• throttle body synchronization
a. With throttle body #1 as standard, adjust
throttle bodies #2, #3, and #4 using the air
screws .
#1 , #2 , #3
NOTE: NOTE:
• After each step, rev the engine two or three
times, each time for less than a second, and
check the synchronization again.
• If the air screw is removed, turn the screw 3/4
turn in and be sure to synchronize the throttle
body.
CAUTION:
Do not use the throttle valve adjusting
screws to adjust the throttle body synchro-
nization.
Vacuum pressure at engine
idling speed
27.3 kPa
(205 mmHg, 8.0709 inHg)
NOTE: NOTE:
The difference in vacuum pressure between
two throttle bodies should not exceed 1.33 kPa
(10 mmHg, 0.39 inHg).
11
INSP
ADJ
, #4