Yamaha XVS950CU 2014, Service Manual

Page: 168 / 580

PERIODIC MAINTENANCE
3-9
TIP
The difference in vacuum pressure between two
throttle bodies should not exceed 1.33 kPa (10
mmHg).
▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲▲▲
8. Measure:
• Engine idling speed
Out of specification
→
Adjust.
Make sure that the vacuum pressure is within
specification.
9. Stop the engine and remove the measuring
equipment.
10.Connect:
• Intake air pressure sensor hose
• Cap
11.Install:
• Air filter case
Refer to “GENERAL CHASSIS” on page 4-1.
12.Adjust:
• Throttle grip free play
Refer to “CHECKING THE THROTTLE GRIP
OPERATION” on page 3-26.
EAS21080
CHECKING THE EXHAUST SYSTEM
The following procedure applies to all of the ex-
haust pipes and gaskets.
1. Check:
• Exhaust pipe joint “1”
• Exhaust pipe “2”
• Muffler “3”
• Gaskets “4”, “5”
Exhaust gas leaks
→
Replace.
2. Check:
Tightening torque
• Exhaust pipe joint nuts “6”
• Exhaust pipe nuts “7”
• Exhaust pipe bolts “8”
• Muffler bracket and frame bolt “9”
• Muffler bracket and engine bracket (rear low-
er side) bolts “10”
• Muffler and exhaust bolt “11”
• Muffler bracket and muffler bolts “12”
EAS1XC1027
ADJUSTING THE EXHAUST GAS VOLUME
TIP
• Be sure to set the CO density level to standard,
and then adjust the exhaust gas volume.
• To adjust the exhaust gas volume, use the CO
adjustment mode of the Yamaha diagnostic
tool. For more information, refer to the opera-
tion manual of the Yamaha diagnostic tool.
1. Connect the Yamaha diagnostic tool to the
coupler. For information about connecting the
Yamaha diagnostic tool, refer to “YAMAHA
DIAGNOSTIC TOOL” on page 7-45.
EAS20960
REPLACING THE AIR FILTER ELEMENT
1. Remove:
• Air filter case cover “1”
Throttle grip free play
4.0–6.0 mm (0.16–0.24 in)
T
R
.
.
Exhaust pipe joint nut
15 Nm (1.5 m·kgf, 11 ft·lbf)
Exhaust pipe nut
20 Nm (2.0 m·kgf, 14 ft·lbf)
Exhaust pipe bolt
20 Nm (2.0 m·kgf, 14 ft·lbf)
Muffler bracket and frame bolt
53 Nm (5.3 m·kgf, 38 ft·lbf)
Muffler bracket and engine brack-
et (rear lower side) bolt
53 Nm (5.3 m·kgf, 38 ft·lbf)
Muffler and exhaust bolt
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Muffler bracket and muffler bolt
35 Nm (3.5 m·kgf, 25 ft·lbf)
Yamaha diagnostic tool
90890-03215
3
12
9
10
8 5
2
4
1
4
7
11
6