Yamaha YZ250(N)/LC Owner's Service Manual page 264

CYLINDER HEAD, CYLINDER AND PISTON
4. Install:
9Spring 1 1
9Link lever 2
9Pulley 3
9Spring 2 4
9Plain washer 5
9Valve shaft 6
NOTE:
9Install the spring 1 to the link lever, and then to
the cylinder.
9Install the spring 1 with its stopper portion a
facing inward.
9Apply the molybdnum disulfide oil on the
grooves in the pulleys.
9Apply the lithium soap base grease on the oil
seal lip.
9Install 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:
9Bolt (link lever) 1
9Bolt (pulley) 2
NOTE:
First tighten the bolt (link lever), and then tighten
the bolts (pulleys).
6. Check:
9Power valve 1 smooth movement
Unsmooth
replace.
4-27
ENG
4 Nm (0.4 m•kg, 2.9 ft•lb)
4 Nm (0.4 m•kg, 2.9 ft•lb)
movement Repair or