4-20
CYLINDER HEAD, CYLINDER AND PISTON
5. Install:
• Gasket (power valve housing)
• Power valve housing "1"
• Bolt (power valve housing) "2"
6. Install:
• O-ring "1"
• Dowel pin "2"
Apply the lithium soap base grease
on the O-rings.
7. Install:
• Cylinder head "1"
• Copper washer "2"
• Nut (cylinder head) "3"
Tighten the nuts (cylinder head) in
stage, using a crisscross pattern.
8. Install:
• Engine bracket "1"
• Bolt (engine bracket) "2"
• Engine mounting bolt (upper) "3"
9. Install:
• Spark plug "1"
• Spark plug cap "2"
Bolt (power valve hous-
ing):
5 Nm (0.5 m•kg, 3.6
ft•lb)
Nut (cylinder head):
25 Nm (2.5 m•kg, 18
ft•lb)
Bolt (engine bracket):
34 Nm (3.4 m•kg, 24
ft•lb)
Engine mounting bolt
(upper):
64 Nm (6.4 m•kg, 46
ft•lb)
Spark plug:
20 Nm (2.0 m•kg, 14
ft•lb)
Summary of Contents for yz250 2015
Page 4: ......
Page 12: ...1 2 LOCATION OF IMPORTANT LABELS EUROPE ...
Page 13: ...1 3 LOCATION OF IMPORTANT LABELS AUS NZ ZA ...
Page 62: ...3 18 CHASSIS ...
Page 153: ...5 40 REAR SHOCK ABSORBER 7 Tighten Bolt air filter joint 1 ...
Page 174: ...PRINTED IN JAPAN E PRINTED ON RECYCLED PAPER ...