Yamaha YZ250 2022 Owner's Service Manual page 167

Disassembling the YPVS system
(2) (2)
(4)
6
Order Job/Parts to remove
1 Piston pin clip
2 Piston pin
3 Piston
4 Small end bearing
5 Piston ring set
6 Power valve cover
7 Side holder
8 Thrust plate
9 Power valve holder 1
10 Power valve shaft
11 Power valve link lever
12 Pulley
13 Link rod
14 Power valve 2
15 Power valve holder 2
16 Power valve 1
CYLINDER HEAD, CYLINDER AND PISTON
8 (2)
7
10
14
15 16
13
(2)
12
11
9
5-5
12
1
3
Q'ty Remarks
2
1
1
1
1
1
2
1
1
1
1
2
1
2
1
1
14
5
7 (2)
2
4
1