Cylinder Head; Removing The Cylinder Head - Yamaha YZF-R25 Service Manual

EAS20044

CYLINDER HEAD

Removing the cylinder head

17 Nm (1.7 m kgf, 12 ft
•
1
2
7
New
7
8
4
13
10 Nm (1.0 m kgf, 7.2 ft
•
68 Nm (6.8 m kgf, 49 ft
•
18
17
New
* Following the tightening order, loosen the bolt one by one, and then retighten it to the specific torque.
Order
Rider seat
Side panels
Front side cowling assembly/Fuel tank cover as-
sembly
Fuel tank
Air filter case
Throttle bodies
Coolant reservoir
Footrest assembly (right)
Muffler assembly/exhaust pipe
Air cut-off valve/Reed valve
Water pump housing
Clutch cover
10 Nm (1.0 m kgf, 7.2 ft
• •
(6)
Ibf)
•
16
Ibf)
•
18
Ibf)
•
9
68 Nm (6.8 m
Job/Parts to remove
Ibf)
5
M
5
3
6
16
15
New
14
11
12
kgf, 49 ft Ibf)
• •
Q'ty
Refer to "GENERAL CHASSIS (1)" on page
4-1.
Refer to "GENERAL CHASSIS (2)" on page
4-3.
Refer to "GENERAL CHASSIS (3)" on page
4-5.
Refer to "FUEL TANK" on page 7-1.
Refer to "GENERAL CHASSIS (6)" on page
4-16.
Refer to "THROTTLE BODIES" on page 7-6.
Refer to "RADIATOR" on page 6-1.
Refer to "REAR BRAKE" on page 4-42.
Refer to "ENGINE REMOVAL" on page 5-3.
Refer to "AIR INDUCTION SYSTEM" on
page 7-15.
Refer to "WATER PUMP" on page 6-6.
Refer to "CLUTCH" on page 5-49.
5-21
CYLINDER HEAD
1st 10 Nm (1.0 m kgf, 7.2 ft
•
2nd 30 Nm (3.0 m kgf, 22 ft
•
*3rd 12 Nm (1.2 m kgf, 8.7 ft
•
Specified angle 115–125˚
68 Nm (6.8 m kgf, 49 ft Ibf)
• •
10 Nm (1.0 m kgf, 7.2 ft
•
15 Nm (1.5 m kgf, 11 ft
•
19
12
68 Nm (6.8 m kgf, 49 ft
•
Remarks
Ibf)
•
Ibf)
•
Ibf)
•
Ibf)
•
Ibf)
•
9
10
Ibf)
•