Yamaha Yzf R1 2007 Manual

THERMOSTAT
6-7
EAS26450
CHECKING THE THERMOSTAT
1. Check:
 Thermostat
Does not open at 71–85°C (160–185°F) → 
Replace.
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a. Suspend the thermostat “1” in a container 
“2” filled with water.
b. Slowly heat the water “3”.
c. Place a thermometer “4” in the water.d. While stirring the water, observe the ther-
mostat and thermometer’s indicated tem-
perature.
Disassembling the thermostat assembly
Order Job/Parts to remove Q’ty Remarks
1 Thermostat housing cover 1
2 Thermostat 1
3...

THERMOSTAT
6-8
NOTE:
If the accuracy of the thermostat is in doubt, 
replace it. A faulty thermostat could cause seri-
ous overheating or over cooling.
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2. Check:
 Thermostat housing cover “1”
 Thermostat housing “2”
Cracks/damage → Replace.
EAS26460
ASSEMBLING THE THERMOSTAT ASSEM-
BLY
1. Install:
 Thermostat housing “1”
 Thermostat “2”
 O-ring “3” 
 Thermostat housing cover “4”
NOTE:
Install the thermostat with its breather hole “a” 
facing up.
EAS26480
INSTALLING...

WATER PUMP
6-9
EAS26500
WAT E R  P U M P
Disassembling the water pump
Order Job/Parts to remove Q’ty Remarks
Oil/water pump assembly Refer to OIL PUMP on page 5-57.
Oil pump rotor Refer to OIL PUMP on page 5-57.
1 Water pump cover 1
2O-ring 1
3Pin 2
4 Impeller shaft (along with the impeller) 1
5 Water pump seal 1
6 Oil seal 1
7 Bearing 1
8O-ring 1
For installation, reverse the removal proce-
dure. 

WATER PUMP
6-10
EAS26520
DISASSEMBLING THE WATER PUMP
1. Remove:
 Water pump seal “1”
 Water pump housing “2”
NOTE:
Tap out the bearing and oil seal from the out-
side of the water pump housing.
2. Remove:
Oil seal “1”
 Bearing “2”
 Water pump housing “3”
NOTE:
Tap out the bearing and oil seal from the out-
side of the water pump housing.
3. Remove:
 Rubber damper holder “1”
 Rubber damper “2”
(from the impeller, with a thin, flat-head 
screwdriver)
NOTE:
Do not scratch the impeller shaft....

WATER PUMP
6-11
2. Install:
 Water pump seal “1” 
CAUTION:
ECA14080
Never lubricate the water pump seal sur-
face with oil or grease.
NOTE:
 Install the water pump seal with the special 
tools.
 Before installing the water pump seal, apply 
Yamaha bond No. 1215 (Three bond No. 
1215®) “2” to the water pump housing “3”.3. Install:
 Rubber damper holder “1” 
 Rubber damper “2” 
NOTE:
Before installing the rubber damper, apply tap 
water or coolant onto its outer surface.
4. Measure:
 Impeller shaft...

FUEL SYSTEM
FUEL TANK.................................................................................................. 7-1
REMOVING THE FUEL TANK ................................................................ 7-2
REMOVING THE FUEL PUMP............................................................... 7-2
CHECKING THE FUEL PUMP BODY .................................................... 7-2
CHECKING THE FUEL PUMP OPERATION ......................................... 7-2
INSTALLING THE FUEL...

FUEL TANK
7-1
EAS26620
FUEL TANK
Removing the fuel tank
Order Job/Parts to remove Q’ty Remarks
Rider seat Refer to GENERAL CHASSIS on page 4-1.
Passenger seat Refer to GENERAL CHASSIS on page 4-1.
1 Fuel tank side cover 2
2 Fuel sender coupler 1
3 Fuel pump coupler 1
4 Fuel tank drain hose 1
5 Fuel tank breather hose 1
6 Fuel hose connector 1
7 Fuel hose 1
8Fuel tank 1
9 Fuel tank top cover 1
10 Fuel pump 1
For installation, reverse the removal proce-
dure. 

FUEL TANK
7-2
EAS26630
REMOVING THE FUEL TANK
1. Extract the fuel in the fuel tank through the 
fuel tank cap with a pump.
2. Remove:
 Fuel hose connector cover
 Fuel hose
 Fuel sender coupler
 Fuel pump coupler
 Fuel tank drain hose
 Fuel tank breather hose
 Fuel tank side cover
CAUTION:
ECA4C81002
 Be sure to disconnect the fuel hose by 
hand. Do not forcefully disconnect the 
hose with tools.
 Although the fuel has been removed from 
the fuel tank be careful when removing 
the fuel hoses,...

FUEL TANK
7-3
EAS4C81002
INSTALLING THE FUEL TANK
1. Install:
 Fuel hose
 Fuel hose connector cover
CAUTION:
ECA14740
When installing the fuel hose, make sure 
that it is securely connected, and that the 
fuel hose holders are in the correct posi-
tion, otherwise the fuel hose will not be 
properly installed.
NOTE:
Install the fuel hose connector securely onto 
the fuel tank until a distinct “click” is heard, and 
then make sure that it does not come loose. To 
install the fuel hose from the fuel...

THROTTLE BODIES
7-4
EAS26970
THROTTLE BODIES
Removing the throttle bodies
Order Job/Parts to remove Q’ty Remarks
Rider seat Refer to GENERAL CHASSIS on page 4-1.
Fuel tank Refer to FUEL TANK on page 7-1.
Air filter case Refer to GENERAL CHASSIS on page 4-1.
1 Sub-wire harness coupler 1 Disconnect.
2 Coolant temperature sensor coupler 1 Disconnect.
3 Throttle servo motor coupler 1 Disconnect.
4Throttle position sensor (for throttle valves) cou-
pler1 Disconnect.
5Throttle position sensor (for throttle...