Yamaha 2007 R6 Service

THROTTLE BODIES
7-10
12 Heat protector 1
13 Throttle body joint 4
For installation, reverse the removal proce-
dure.
Removing the throttle body assembly
Order Job/Parts to remove Q’ty Remarks
T R..10 Nm (1.0 m • 
kg, 7.2 ft • Ib)
7
10
3
21
5
8 (8)11
4
12
6
9
13 

THROTTLE BODIES
7-11
Removing the primary injectors
Order Job/Parts to remove Q’ty Remarks
1 Intake air pressure sensor coupler 1 Disconnect.
2 Cylinder-#1 primary injector coupler 1 Disconnect.
3 Cylinder-#2 primary injector coupler 1 Disconnect.
4 Cylinder-#3 primary injector coupler 1 Disconnect.
5 Cylinder-#4 primary injector coupler 1 Disconnect.
6 Sub-wire harness 2 1
7 Intake air pressure sensor hose 7
8 Intake air pressure sensor 1
9 Primary injector fuel rail 1
10 Primary injector 4
11 Throttle...

THROTTLE BODIES
7-12
EAS26980
CHECKING THE PRIMARY INJECTORS
1. Check:
•Injectors
Damage → Replace.
EAS26990
CHECKING THE THROTTLE BODIES
1. Check:
•Throttle bodies
Cracks/damage → Replace the throttle bod-
ies as a set.
2. Check:
•Fuel passages
Obstructions → Clean.



 
 
 








 
 



 
 



 
 







a. Wash the throttle bodies in a petroleum- 
based solvent.
Do not use any caustic carburetor cleaning 
solution.
b. Blow out all of the passages with compressed 
air.
       ...

THROTTLE BODIES
7-13
ET2C01007
ADJUSTING THE THROTTLE POSITION 
SENSOR (FOR THROTTLE VALVES)
1. Check:
• Throttle position sensor (for throttle valves)
Refer to “CHECKING THE THROTTLE PO-
SITION SENSOR (FOR THROTTLE 
VALVES)” on page 8-97.
2. Adjust:
 Throttle position sensor angle



 
 
 








 
 



 
 



 
 







a. Connect the two C size batteries to the throt-
tle servo motor terminal as shown.
CAUTION:
EC2C01027
Do not use a 12 V battery to operate the throt-
tle valves.
b. Check that the...

THROTTLE BODIES
7-14
         
ET2C01009
INSTALLING THE THROTTLE BODY JOINTS
1. Install:
Throttle body joints “1”
NOTE:
Be sure to install the throttle body joints with the 
“L” mark onto the throttle body openings for cyl-
inders #1 and #2 and the joints with the “R” mark 
onto the openings for cylinders #3 and #4.
T R.. 
Throttle body joint bolt
10 Nm (1.0 m·kg, 7.2 ft·lb)
4
41
3
2
L
R
1 

AIR INDUCTION SYSTEM
7-15
EAS27040
AIR INDUCTION SYSTEM
2
1
2
4
3
4
3
6
4
5
A
A 

AIR INDUCTION SYSTEM
7-16
1. Lower air filter case
2. Air induction system hose (air filter case to air 
cut-off valve)
3. Air cut-off valve
4. Air induction system hose (air cut-off valve to 
cylinder head cover)
5. Reed valve assembly
6. Exhaust port 

AIR INDUCTION SYSTEM
7-17
Removing the air cut-off valve
Order Job/Parts to remove Q’ty Remarks
Fuel tank Refer to “FUEL TANK” on page 7-1.
Air filter case Refer to “AIR FILTER CASE” on page 7-5.
Canister (for California only) Refer to “THROTTLE BODIES” on page 7-8.
1 Air induction system cover 1
2 Air induction system solenoid coupler 1 Disconnect.
3Air induction system hose (air filter case to air 
cut-off valve)1
4Air induction system hose (air cut-off valve to 
cylinder head cover)2
5 Air cut-off...

AIR INDUCTION SYSTEM
7-18
Removing the reed valves
Order Job/Parts to remove Q’ty Remarks
1 Reed valve cover 2
2 Reed valve assembly 2
3 Reed valve plate 4
For installation, reverse the removal proce-
dure.
1
3
LTLT
LTLT
1
22
3
LTLT
T R..10 Nm (1.0 m • 
kg, 7.2 ft • Ib)
T R..10 Nm (1.0 m • 
kg, 7.2 ft • Ib) 

AIR INDUCTION SYSTEM
7-19
EAS27060
CHECKING THE AIR INDUCTION SYSTEM
Air injection
The air induction system burns unburned ex-
haust gases by injecting fresh air (secondary air) 
into the exhaust port, reducing the emission of 
hydrocarbons. When there is negative pressure 
at the exhaust port, the reed valve opens, allow-
ing secondary air to flow into the exhaust port. 
The required temperature for burning the un-
burned exhaust gases is approximately 600 to 
700 °C (1112 to 1292 °F).
Air cut-off...