Yamaha YZF-R7 User Manual

6 - 14
EFI
ELECTRONIC FUEL INJECTION
CHECKING THE FUEL PUMP AND
PRESSURE REGULATOR OPERATION
1. Check:
• pressure regulator operation
▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼
a. Remove the fuel tank and air filter
case cover.
Refer to “FUEL TANK AND AIR FIL-
TER” in chapter 3.
b. Disconnect the nagative pressure
hose 1 from the pressure regulator
at the joint.
c. Disconnect the injector fuel pipe 3 2
from the fuel distributor.
d. Connect the mity vac 3 onto the neg-
ative pressure hose from the pressure
regulator.
e. Install the pressure gauge 4 and
adapter 5 with the washers and
injector fuel pipe 3 onto the fuel dis-
tributor.
f. Install the fuel tank.
Refer to “FUEL TANK AND AIR FIL-
TER” in chapter 3.
g. Start the engine.
h. Measure the fuel pressure.
Mity vac
90890-06756
Pressure gauge
90890-03153
Adapter
90890-03151
T
R
.
.
Adapter
30 Nm (3.0 m • kg, 22 ft • lb)
Fuel pressure
250 ~ 260 kPa
(2.5 ~ 2.6 kgf/cm
2
,
35.6 ~ 37.0 psi)

Yamaha YZF-R7 Specifications

General

Bore x Stroke	80.0mm x 68.6mm
Compression Ratio	11.5:1
Fuel Delivery	Fuel injection
Final Drive	Chain
Front Brakes	Dual 298mm hydraulic disc; ABS
Rear Brakes	245mm hydraulic disc; ABS
Front Tire	120/70ZR17
Rear Tire	180/55ZR17
Wheelbase	54.9 in
Seat Height	32.9 in
Fuel Capacity	3.4 gal
Wet Weight	414 lb
Ground Clearance	5.3 in
Engine Type	Liquid-cooled, 4-stroke, DOHC, 4-valves
Transmission	6-speed
Front Suspension	41mm KYB inverted fork, adjustable preload, rebound and compression damping; 5.1-in travel
Rear Suspension	Single shock, adjustable preload and rebound damping; 5.1-in travel