Yamaha YZF-R1PC Utility Trailer User Manual


 
3 - 15
CHK
ADJ
SYNCHRONIZING THE THROTTLE BODIES
4. Install:
carburetor syncronizer 1
(onto the synchronizing hose)
digital tachometer
(near the spark plug)
5. Install:
fuel tank
Refer to FUEL TANK.
6. Start the engine and let it warm up for sev-
eral minutes.
7. Measure:
engine idling speed
Out of specification Adjust.
Refer to ADJUSTING THE ENGINE
IDLING SPEED.
8. Adjust:
throttle body synchronization
▼▼▼ ▼▼▼▼▼ ▼▼▼ ▼▼▼ ▼▼▼ ▼▼▼
a. With throttle body #3 as standard, adjust
throttle bodies #1, #2, and #4 using the air
screw 1.
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.
Carburetor synchronizer
YU-08030
Engine idling speed
1,000 ~ 1,100 r/min
Carburetor angle driver
90890-03158
Vacuum pressure at engine idling
speed
25.3 kPa
(190 mmHg, 7.48 inHg)