Yamaha WR250F Manuel D'atelier page 324

CYLINDER HEAD
Extent of removal:
Extent of removal Order
Preparation for removal
1
10
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1 Cylinder head removal
Part name
CYLINDER HEAD REMOVAL
Seat and fuel tank
Exhaust pipe and silencer
Radiator hose 1
Carburetor
Camshaft
Upper engine bracket
1 Radiator pipe
2 Decompression cable guide
3 Oil delivery pipe
4 Nut
5 Bolt [L=135 mm (5.31 in)]
6 Bolt [L=145 mm (5.71 in)]
7 Cylinder head
8 Timing chain guard (exhaust side)
9 Bolt (decompression shaft)
Decompression shaft
4 - 29
CYLINDER HEAD
Q'ty
Refer to "SEAT, FUEL TANK AND SIDE
COVERS" section.
Refer to "EXHAUST PIPE AND
SILENCER" section.
Disconnect at cylinder head side.
Refer to "CARBURETOR" section.
Refer to "CAMSHAFTS" section.
Refer to "ENGINE REMOVAL" section.
1
1
1
2
2
2
1 Disconnect the decompression cable.
1
1
1
ENG
Remarks