Cylinder Head/Valves Service Information; Cylinder Head/Valves Specifications; Cylinder Head/Valves Torque Values - Honda 2000 XR50R Service Manual

7. CYLINDER HEAD/VALVES
SERVICE INFORMATION
TROUBLESHOOTING
CYLINDER COMPRESSION
SERVICE INFORMATION
GENERAL
7-1
7-2
7-3
CAMSHAFT REMOVAL
CYLINDER HEAD
CAMSHAFT INSTALLATION
• This section covers service of the cyl inder head, va lves and camshaft.
• The cyl inder head, valves and camshaft services can be done with the engine installed in the fra m e.
7-3
7-4
7-15
• When disassembling, mark and store the disassembled parts to ensure that they are reinstalled in their original locations.
• Clean all disassembled parts with cleaning solvent and dry them by blowing them off with compressed air befo re
inspection.
• Camshaft lubricating oit is fed through oil passages in the cylinder head. Clean the oil passages before assembling
cylinde r head.
• Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head.
• Refer to section 10 for cam chain tensioner service.
SPECIFICATIONS
ITEM
valve guide
Valve stem
TOROUE VALUES
Cylinder head nut
Cylinder head right side cover bolt
Cam sprocket bolt
STANDARD
11 N·m (1.1 kgf·m ,8 Ibf·ft)
10 N·m (1.0 kgf.m, 7Ibf·ft)
9 N·m (0.9 kgf·m, 6.5 Ibf·ft)
SERVICE LIMIT
7-1