1999 YAMAHA YZF-R7 Owners Manual

5 - 14
COOLWATER PUMP
EB503020
DISASSEMBLING THE WATER PUMP
1. Remove:
• water pump seal 1
NOTE:
Tap out the water pump seal from the
inside of the water pump housing.
2Water pump housing
2. Remove:
• oil seal 1
• bearing 2
NOTE:
Tap out the bearing and oil seal from the
outside of the water pump housing.
3Water 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.
EB503032
CHECKING THE WATER PUMP
1. Check:
• water pump housing cover 1
• water pump housing 2
• impeller 3
• rubber damper 4
• rubber damper holder 5
Cracks/damage/wear ® Replace.
2. Check:
• water pump seal
• oil seal
• water pump inlet pipe
Cracks/damage/wear ® Replace.
• bearing
Rough movement ® Replace.

5 - 15
COOLWATER PUMP
EB503040
ASSEMBLING THE WATER PUMP
1. Install:
• oil seal 1
(into the water pump housing 2)
NOTE:
• Before installing the oil seal, apply tap
water or coolant onto its outer surface.
• Install the oil seal with a socket that
matches its outside diameter.
New
2. Install:
• water pump seal 1
ACHTUNG:CAUTION:
Never lubricate the water pump seal
surface 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 2 to the
water pump housing 3.
Push down.
Mechanical seal installer 4
90890-04078
Middle driven shaft bearing
driver 5
90890-04058
Yamaha bond No. 1215
90890-85505
New
3. Install:
• rubber damper 1
• rubber damper holder 2
NOTE:
Before installing the rubber damper,
apply tap water or coolant onto its outer
surface.
New
New

5 - 16
COOLWATER PUMP
4. Measure:
• impeller shaft tilt
Out of specification ® Repeat steps (3)
and (4).
ACHTUNG:CAUTION:
Make sure that the rubber damper and
rubber damper holder are flush with the
impeller.
1Straightedge
2Impeller
Max. impeller shaft tilt
0.15 mm (0.006 in)

6 - 1
EFI

ELECTRONIC FUEL INJECTION
ELECTRONIC FUEL INJECTION
ELECTRONIC FUEL INJECTION
Order Job/Part Q’ty Remarks
Removing the injector 2 assembly
and air filter case
Remove the parts in the order listed.
Air filter case cover Refer to “FUEL TANK AND AIR FIL-
TER” in chapter 3.
1 Crankcase breather hose 1 Disconnect.
2 Fuel hose 3
3 Injector 2 sub-lead coupler 3 Disconnect.
4 Pressure sensor hose 2 Disconnect.
5 Plastic band 1
6 Injector 2 assembly 1
7 Spacer 6
8 Air funnel 4
9 Air funnel bracket 4
10 Fuel hose joint pipe 1
6

6 - 2
EFI

ELECTRONIC FUEL INJECTION
Order Job/Part Q’ty Remarks
11 Intake air temperature sensor 1
12 Copper washer 1
13 Air filter case breather hose 1 Disconnect.
14 Negative pressure hose 1 Disconnect.
15 Air funnel rubber seat 4
16 Air filter case 1
For installation, reverse the removal
procedure.
6

6 - 3
EFI

T R..30 Nm (3.0 m • kg, 22 ft • Ib)
T R..8 Nm (0.8 m • kg, 5.8 ft • Ib)
T R..5 Nm (0.5 m • kg, 3.6 ft • Ib)
T R..8 Nm (0.8 m • kg, 5.8 ft • Ib)
(4)
1
2
3
4
5 6
7
10
9 8
11
2012
14
11
12
13
15
19
16
18
17
LTLT
LTLT
LTLT

ELECTRONIC FUEL INJECTION
Order Job/Part Q’ty Remarks
Removing the injector 2
Remove the parts in the order listed.
1 Intake air pressure sensor coupler 1
2 Atmospheric pressure sensor cou-
pler1
3 Cylinder #1 – injector 2 coupler 1
4 Cylinder #2 – injector 2 coupler 1
5 Cylinder #3 – injector 2 coupler 1
6 Cylinder #4 – injector 2 coupler 1
7 Pressure sensor hose 2
8 Intake air pressure sensor 1
9 Atmospheric pressure sensor 1
10 Pressure sensor bracket 1
11 Union bolt 2
12 Washer 4

6 - 4
EFI

ELECTRONIC FUEL INJECTION
Order Job/Part Q’ty Remarks
13 Injector fuel pipe 3 1
14 Injector fuel pipe 4 1
15 Injector 2 cover 8
16 Injector 2 4
17 O-ring 4
18 Seal 4
19 Seal 4
20 Fuel distributor 1
For installation, reverse the removal
procedure.
T R..30 Nm (3.0 m • kg, 22 ft • Ib)
T R..8 Nm (0.8 m • kg, 5.8 ft • Ib)
T R..5 Nm (0.5 m • kg, 3.6 ft • Ib)
T R..8 Nm (0.8 m • kg, 5.8 ft • Ib)
(4)
1
2
3
4
5 6
7
10
9 8
11
2012
14
11
12
13
15
19
16
18
17
LTLT
LTLT
LTLT

6 - 5
EFI

ELECTRONIC FUEL INJECTION
Order Job/Part Q’ty Remarks
Removing the throttle body assem-
bly
Remove the parts in the order listed.
1 Fuel hose 1
2 Throttle position sensor coupler 1
3 Cylinder #4 – injector 1 coupler 1
4 Cylinder #3 – injector 1 coupler 1
5 Cylinder #2 – injector 1 coupler 1
6 Cylinder #1 – injector 1 coupler 1
7 Starter cable 1 Disconnect.
8 Throttle cable 2 Disconnect.
9 Throttle stop screw 1 Disconnect.
10 Throttle body assembly 1
11 Left plate 4
12 Right plate 4