Yamaha XJR1300(L) 99, Service Manual

Page: 68 / 338

3-10
CHK
ADJ
SYNCHRONIZING THE CARBURETORS
ADJUSTING THE ENGINE IDLING SPEED
NOTE:
NOTE:
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:
31.3 kPa (235 mm Hg)
The difference in vacuum pressure between
two carburetors should not exceed 1.33 kPa (10
mm Hg, 0.4 in Hg).
7. Check:
S
engine idling speed
Out of specification
Adjust.
8. Stop the engine and remove the measuring
equipment.
9. Adjust:
S
throttle cable free play
Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.
Throttle cable free play (at the
throttle grip):
3 5 mm
10. Install:
S
fuel tank
S
seat
S
side covers
Refer to “SEAT, SIDE COVER AND FUEL
TANK”.
EAS00054
ADJUSTING THE ENGINE IDLING SPEED
Prior to adjusting the engine idling speed, the
carburetor synchronization should be adjusted
properly, the air filter should be clean, and the
engine should have adequate compression.
1. Start the engine and let it warm up for several
minutes.
2. Install:
S
engine tachometer 1
(to the spark plug lead of cyl. #1)