Yamaha WR250F 2021 - Cylinder Head

CYLINDER HEAD
5-21
EAM20107
CYLINDER HEAD
Removing the cylinder head
Order Job/Parts to remove Q’ty Remarks
Refer to “INSTALLING THE CYLINDER
HEAD” on page 5-23.
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 5-14.
Upper engine bracket Refer to “ENGINE REMOVAL” on page 5-6.
1 Nut (cylinder head) 2
2 Bolt (cylinder head) 3
3 Bolt (cylinder head) 1
4 Cylinder head 1
5 Cylinder head gasket 1
M
1st
3rd
4th
2nd
30 N・m (3.0 kgf・m, 22 lb・ft)
15 N・m (1.5 kgf・m, 11 lb・ft)
60˚
60˚
(2)
1
10 N・m (1.0 kgf・m, 7.4 lb・ft)
10 N・m (1.0 kgf・m, 7.4 lb・ft)