Yamaha WR250F 2017 Owner's Service Manual page 253

VALVES AND VALVE SPRINGS
EAS2GBB249
Removing the valves and valve springs
Order
Cylinder head
Valve lifter
1
Adjusting pad
2
Valve cotter
3
Valve spring retainer
4
Valve spring
5
Valve stem seal
6
Valve spring seat
7
Intake valve
8
Exhaust valve
9
Part name
6-24
VALVES AND VALVE SPRINGS
Q'ty
Refer to "CYLINDER HEAD" on page 6-20.
4
4
8
4
4
4
4
2
2
For installation, reverse the removal proce-
dure.
Remarks