Yamaha FZ6-SS 2004, Service Manual, Page: 92 / 456

3-17
SYNCHRONIZING THE THROTTLE BODIES
CHK
ADJ
NOTE:
CAUTION:
NOTE:
6. Measure:
S
engine idling speed
Out of specification
!
Adjust.
Refer to “ADJUSTING THE ENGINE IDLING
SPEED”.
Engine idling speed
1,250
X
1,350 r / min
7. Adjust:
S
throttle body synchronization
a. With throttle body #1 as standard, adjust
throttle bodies #2, #3, and #4 using the air
screws
1 .
#1 2 , #2 3 , #3 4 , #4 5
S
After each step, rev the engine two or three
times, each time for less than a second, and
check the synchronization again.
S
If the air screw is removed, turn the screw 3 / 4
turn in and be sure to synchronize the throttle
body.
Do not use the throttle valve adjusting
screws to adjust the throttle body synchro-
nization.
Vacuum pressure at engine
idling speed
29 kPa
(218 mmHg, 8.5827 inHg)
The difference in vacuum pressure between
two throttle bodies should not exceed 1.33 kPa
(10 mmHg, 0.39 inHg).