Cylinder Head/Valves Service Information; Cylinder Head/Valves Torque Values; ('04 - '06 California Type, After '06) - Honda 2004 CRF250X Service Manual

SERVICE INFORMATION
GENERAL
CYLINDER HEADIVALVES
• This section covers service of the camshaft, cylinder head and valves. These services can be done with the engine
installed in the frame.
• During disassembly, mark and store the disassembled parts to ensure that they are reinstalled in their original loca-
lions.
• Clean all disassembled parts with cleaning solvent and dry them by blowing them off with compressed air before
inspection.
• Camshaft lubrication oi l is fed through oil passages in the cylinder head. Clean the oil passages before assembling the
cylinder head.
• Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head.
SPECIFICATIONS
F ;inder compression
ITEM
valve guide
stem
height
I .
TORQUE VALUES
i
Ii
0.0.
49
Canada
California
Cylinder head cover boh
Camshaft holder mounting bolt
Cylinder head nut
Crankshaft hole cap
Rocker arm shaft cap
Engine hanger plate
""'
Spark plug
Vacuum hose boost joint
(engine side)
(frame side)
('04 - '06 California type, After '06)
'04:
After '04:
STANDARD
392 kPa (4.0 kgf/cm ,57 psi)
9.8 N·m (1.0 kgf.m, 7 Ibf·ft)
16 N·m (1.6 kgf.m, 12 Ibf·ft)
39 N'm (4.0 kgf·m , 29 Ibf·ft)
15 N'm (1.5 kgf·m, 11 Ibf·ft)
5.9 N'm (0.6 kgf·m, 4.3 Ibf·ft)
54 N·m (5.5 kgf·m. 40 Ibf·ft)
26 N·m (2.7 kgf·m, 20 Ibf·ft)
34 N'm (3.5 kgf·m, 25 Ibf·ft)
16 N'm (1.6 kgf.m, 12 Ibf·ft)
2.5 N'm (0.25 kgf.m, 1.8Ibf.ft)
Unit: mm (in)
SERVICE UMIT
Apply oil to the threads
Apply oil to the seating
surface
Apply grease to the
threads
Apply grease to the
threads
8-3