Yamaha 2011 YZ250, Owner'S Manual

Page: 78 / 174

4-14
CYLINDER HEAD, CYLINDER AND PISTON
REMOVING THE PISTON AND POWER VALVE
Order Part name Q'ty Remarks
1 Piston pin clip 2 Refer to removal section.
2 Piston pin 1 Refer to removal section.
3 Piston 1 Refer to removal section.
4 Small end bearing 1 Refer to removal section.
5 Piston ring 2 Refer to removal section.
6 Power valve cover 1
7 Side holder 2
8 Thrust plate 1
9 Bolt 3
10 Valve holder 1 1
11 Valve shaft 1
12 Link lever 1
13 Pulley 2
14 Link rod 1
15 Power valve 2 2
16 Valve holder 2 1
17 Power valve 1 1
6 Nm (0.6 m kg, 4.3 ft lb)
4 Nm (0.4 m kg, 2.9 ft lb)
4 Nm (0.4 m kg, 2.9 ft lb)
4 Nm (0.4 m kg, 2.9 ft lb)
4 Nm (0.4 m kg, 2.9 ft lb)