4-19
CYLINDER HEAD, CYLINDER AND PISTON
ENG
EC478100
PISTON AND POWER VALVE
Extent of removal
Order
Part name
Q’ty
Remarks
PISTON AND POWER VALVE
REMOVAL
1
Piston pin clip
2
2
Piston pin
1
3
Piston
1
Refer to “REMOVAL POINTS”.
4
Small end bearing
1
5
Piston ring
2
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
Extent of removal:
1
Piston and piston ring removal
2
Power valve removal
2
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)
1P8-9-32-4a 4/10/06 1:53 PM Page 38
Summary of Contents for YZ250(W)/W1
Page 78: ...2 11 MAINTENANCE SPECIFICATIONS SPEC MEMO...
Page 594: ...TUN MEMO...
