Yamaha YZ250/LC Manuel Du Propriétaire page 268

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CYLINDER HEAD, CYLINDER AND PISTON
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
replace.
4-28
ENG
4 Nm (0.4 m•kg, 2.9 ft•lb)
4 Nm (0.4 m•kg, 2.9 ft•lb)
¡
movement
Repair
or

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