Yamaha YZ125(W)/W1 Owner's Service Manual page 272

CYLINDER HEAD, CYLINDER AND PISTON
5. Install:
9 Gasket (power valve housing)
9 Power valve housing 1
9 Bolt (power valve housing) 2
6. Install:
9 O-ring 1
NOTE:
Apply the lithium soap base grease on the O-
rings.
7. Install:
9 Cylinder head 1
9 Copper washer 2
9 Nut (cylinder head) 3
NOTE:
Tighten the nuts (cylinder head) in stage, using a
crisscross pattern.
8. Install:
9 Engine bracket 1
9 Bolt (engine bracket) 2
9 Engine mounting bolt (upper) 3
9. Install:
9 Spark plug 1
9 Spark plug cap 2
4-29
ENG
4 Nm (0.4 m•kg, 2.9 ft•lb)
28 Nm (2.8 m•kg, 20 ft•lb)
34 Nm (3.4 m•kg, 24 ft•lb)
34 Nm (3.4 m•kg, 24 ft•lb)
20 Nm (2.0 m•kg, 14 ft•lb)