Yamaha Yzf R1 2007 Manual

OIL PUMP
5-61
3. Check:
 Oil pump operation
Rough movement → Repeat steps (1) and 
(2) or replace the defective part(s).
EAS24970
CHECKING THE RELIEF VALVE
1. Check:
 Relief valve body “1”
 Relief valve “2”
 Spring “3”
 O-ring “4”
Damage/wear → Replace the defective 
part(s).
EAS24980
CHECKING THE OIL DELIVERY PIPES
The following procedure applies to all of the oil 
delivery pipes.
1. Check:
 Oil delivery pipe “1”
 Oil pipe “2”
Damage → Replace.
Obstruction → Wash and blow out with 
compressed...

OIL PUMP
5-62
 O-ring “2”
Damage/wear → Replace.
 Oil nozzle passage
Obstruction → Blow out with compressed 
air.
EAS25010
ASSEMBLING THE OIL PUMP
1. Lubricate:
 Inner rotor
 Outer rotor
 Oil pump shaft
(with the recommended lubricant)
2. Install:
Pin “1”
 Inner rotor “2”
 Outer rotor “3”
 Oil pump housing “4”
NOTE:
When installing the inner rotor, align the pin “1” 
in the oil pump shaft with the groove “a” in the 
inner rotor “2”.
3. Install:
 Oil/water pump driven sprocket “1”
NOTE:
5VY mark...

OIL PUMP
5-63
NOTE:
Install the oil/water pump assembly drive chain 
“1” onto the oil/water pump assembly drive 
sprocket “2”.
CAUTION:
ECA4C81007
After installing the oil/water pump assem-
bly drive chain and drive sprocket, make 
sure the oil/water pump turns smoothly.
3. Install:
 Oil/water pump assembly drive chain guide 
“1”
NOTE:
“UP” mark of the oil/water pump assembly 
drive chain guide is upward.
4. Install:
 Oil delivery pipe “1”5. Install:
 Relief valve “1”
 O-ring 
 Oil strainer “2”
...

OIL PUMP
5-64
 Engine oil drain bolt
WARNING
EWA12820
Always use new copper washers.
NOTE:
 Tighten the oil pan bolts in stages and in a 
crisscross pattern.
 Lubricate the oil level switch O-ring with 
engine oil.
Engine oil drain bolt
43 Nm (4.3 m·kg, 31 ft·lb) 

CRANKCASE
5-65
EAS25540
CRANKCASE
Separating the crankcase
Order Job/Parts to remove Q’ty Remarks
Air filter case Refer to GENERAL CHASSIS on page 4-1.
Throttle body assembly Refer to THROTTLE BODIES on page 7-4.
Engine Refer to ENGINE REMOVAL on page 5-1
Cylinder head Refer to CYLINDER HEAD on page 5-18.
Generator Refer to GENERATOR on page 5-30.
Starter clutch Refer to STARTER CLUTCH on page 5-34.
Shift shaft Refer to SHIFT SHAFT on page 5-54.
Crankshaft position sensorRefer to CRANKSHAFT POSITION...

CRANKCASE
5-66
7 Lower crankcase 1
8Dowel pin 3
9 Damper 1
For installation, reverse the removal proce-
dure.
Separating the crankcase
Order Job/Parts to remove Q’ty Remarks 

CRANKCASE
5-67
EAS25550
DISASSEMBLING THE CRANKCASE
1. Place the engine upside down.
2. Remove:
 Crankcase bolts
NOTE:
 Loosen each bolt 1/4 of a turn at a time, in 
stages and in a crisscross pattern. After all of 
the bolts are fully loosened, remove them.
 Loosen the bolts in decreasing numerical 
order (refer to the numbers in the illustration).
 The numbers embossed on the crankcase 
indicate the crankcase tightening sequence.
M6 × 50 mm (2.0 in) bolts: “1”, “7”
M6 × 60 mm (2.4 in) bolts: “2”,...

CRANKCASE
5-68
3. Install:
Dowel pin
4. Set the shift drum assembly and transmis-
sion gears in the neutral position.
5. Install:
 Lower crankcase “1”
(onto the upper crankcase “2”)
CAUTION:
ECA13980
Before tightening the crankcase bolts, 
make sure the transmission gears shift cor-
rectly when the shift drum assembly is 
turned by hand.
6. Install:
 Crankcase bolts
NOTE:
 Lubricate the bolt threads with engine oil.
 Install a washer on bolts “1” – “10” and “22”.
 Seal bolt “18”
 Tighten the bolts...

CRANKSHAFT
5-69
EAS25960
CRANKSHAFT
Removing the connecting rods and pistons
Order Job/Parts to remove Q’ty Remarks
Lower crankcase Refer to CRANKCASE on page 5-65.
1 Connecting rod cap 4
2 Big end lower bearing 4
3 Big end upper bearing 4
4 Piston pin clip 8
5 Piston pin 4
6Piston 4
7 Connecting rod 4
8 Top ring 4
9 2nd ring 4
10 Oil ring 4
11 Cylinder 1
12 Cylinder gasket 1
For installation, reverse the removal proce-
dure. 

CRANKSHAFT
5-70
Removing the crankshaft
Order Job/Parts to remove Q’ty Remarks
Lower crankcase Refer to CRANKCASE on page 5-65.
Connecting rod and connecting rod capsRefer to REMOVING THE CONNECTING 
RODS AND PISTONS on page 5-71.
1Crankshaft 1
2 Crankshaft journal lower bearing 5
3 Crankshaft journal upper bearing 5
4 Washer 1
5 Crankshaft drive gear 1
6Pin 1
7Pickup rotor 1
For installation, reverse the removal proce-
dure.