Yamaha YZ250(P)/LC, Owner'S Service Manual

Page: 268 / 584

4-28
CYLINDER HEAD, CYLINDER AND PISTON
ENG
4. Install:
9
Spring 1
1
9
Link lever
2
9
Pulley
3
9
Spring 2
4
9
Plain washer
5
9
Valve shaft
6
NOTE:
9
Install the spring 1 to the link lever, and then to
the cylinder.
9
Install the spring 1 with its stopper portion
a
facing inward.
9
Apply the molybdnum disulfide oil on the
grooves in the pulleys.
9
Apply the lithium soap base grease on the oil
seal lip.
9
Install the valve shaft with its cut
b
aligning
with the thrust plate
7
, and then rotate the
valve shaft so that its cut faces upward.
5. Install:
9
Valve holder 1
1
9
Bolt (link lever)
2
9
Bolt (pulley)
3
NOTE:
First tighten the bolt (link lever), and then tighten
the bolts (pulleys).
6. Check:
9
Power valve 1 smooth movement
Unsmooth movement
→
Repair or
replace.
4 Nm (0.4 m•kg, 2.9 ft•lb)
4 Nm (0.4 m•kg, 2.9 ft•lb)
5NX-9-30-4B 6/7/01 1:56 PM Page 2