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• Fuel tank cover
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Air scoop
Refer to "GENERAL CHASSIS (1)" on page
4-1.
EAS30799
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 8-36.
Yamaha diagnostic tool USB
90890-03250
Yamaha diagnostic tool (A/I)
90890-03252
EAS30627
CHECKING THE AIR INDUCTION SYSTEM
Refer to "CHECKING THE AIR INDUCTION
SYSTEM" on page 7-19.
EAS30623
CHECKING THE CYLINDER HEAD
BREATHER HOSE
1. Remove:
• Air filter case
Refer to "GENERAL CHASSIS (2)" on page
4-7.
2. Check:
• Cylinder head breather hose "1"
Cracks/damage Replace.
Loose connection Connect properly.
ECA14920
NOTICE
Make sure the cylinder head breather hose is
routed correctly.
PERIODIC MAINTENANCE
a
1
3. Install:
• Air filter case
Refer to "GENERAL CHASSIS (2)" on page
4-7.
EAS30628
REPLACING THE AIR FILTER ELEMENT
1. Remove:
• Air scoop
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Fuel tank cover
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
2. Remove:
• ECU (Engine Control Unit) "1"
• Air filter case cover "2"
Refer to "GENERAL CHASSIS (2)" on page
4-7.
a a
2
3. Check:
• Air filter element "1"
• Air filter seal
Damage Replace.
TIP
• Replace the air filter element every 40000 km
(24000 mi) of operation.
• The air filter needs more frequent service if you
are riding in unusually wet or dusty areas.
3-11
1
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