Yamaha WR450FN 2022, Owner'S Service Manual

Page: 222 / 402

CYLINDER HEAD
5-20
EAM20107
CYLINDER HEAD
Removing the cylinder head
Order Job/Parts to remove Q’ty Remarks
Seat
Refer to “GENERAL CHASSIS” on page
4-1.
Side cover (left/right)
Refer to “GENERAL CHASSIS” on page
4-1.
Air scoop (left/right)
Refer to “GENERAL CHASSIS” on page
4-1.
Fuel tank Refer to “FUEL TANK” on page 7-1.
Exhaust pipe/Silencer Refer to “ENGINE REMOVAL” on page 5-6.
Radiator hose Disconnect.
Coolant temperature sensor coupler Disconnect.
Throttle body Refer to “THROTTLE BODY” on page 7-4.
Camshaft Refer to “CAMSHAFT” on page 5-13.
Upper engine bracket Refer to “ENGINE REMOVAL” on page 5-6.
1 Bolt (cylinder head) 2
2 Bolt (cylinder head) 4
3 Cylinder head 1
4 Timing chain guide (intake side) 1
5 Cylinder head gasket 1
M
3
5
4
7 N
・
m (0.7 k g f
・
m, 5.2 lb
・
ft)
1 s t
3 rd
4th
2nd
40 N ・ m (4.0 k g f ・ m, 3 0 lb ・ ft)
2 3 N
・
m (2. 3 k g f
・
m, 17 lb
・
ft)
60˚
90˚
10 N
・
m (1.0 k g f
・
m, 7.4 lb
・
ft)
10 N
・
m (1.0 k g f
・
m, 7.4 lb
・
ft)
LT