Yamaha 2008 Raptor 250, Service Manual

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ENG
4-7
CYLINDER HEAD
Order Job/Parts to remove Q’ty Remarks
Removing the cylinder head
Seat/front fender/fuel tank/fuel tank
shield
Refer to “SEAT, FENDERS AND FUEL
TANK” in chapter 3.
Muffler and exhaust pipe Refer to “MUFFLER AND EXHAUST
PIPE”.
Carburetor Refer to “CARBURETOR” in chapter 5.
Ignition coil spark plug lead Refer to “LEADS, CABLES AND HOSES”.
Engine bracket (upper side) Refer to “ENGINE MOUNTING BOLTS”.
1 Spark plug 1
2 Cylinder head cover 1/O-ring 1/1
3 Cylinder head cover 2/O-ring 1/1
4 Cylinder head cover 3/O-ring 1/1
5 Breather pipe 1/Gasket 1/1
6 Crankshaft end accessing screw/
O-ring 1/1
7 Timing mark accessing screw/O-ring 1/1
8 Camshaft sprocket bolt 1 Loosen.
20 Nm (2.0 m•kg, 15 ft•lb)
60 Nm (6.0 m•kg, 44 ft•lb)
10 Nm (1.0 m•kg, 7.4 ft•lb)
10 Nm (1.0 m•kg, 7.4 ft•lb)
18 Nm (1.8 m•kg, 13 ft•lb)
24 Nm (2.4 m•kg, 18 ft•lb)
18 Nm (1.8 m•kg, 13 ft•lb)
10 Nm (1.0 m•kg, 7.4 ft•lb)
CYLINDER HEAD