Cylinder Head/Valves - Honda CB HORNET 160R 2015 Shop Manual

COMPONENT LOCATION
SERVICE INFORMATION
TROUBLESHOOTING
CYLINDER COMPRESSION
CYLINDER HEAD COVER
CAMSHAFT REMOVAL/INSTALLATION
SERVICE INFORMATION
GENERAL
• This section covers service of the cylinder head, valves, rocker arms and camshaft. These services can be done with the engine
installed in the frame.
• Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head. Do not strike the
cylinder head cover and cylinder head too hard during removal.
• 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 before inspection.
• Camshaft and rocker arm lubricating oil is fed through oil passages in the cylinder head (stud bolt hole), camshaft holder and
cylinder head cover. Clean the oil passages before assembling them.
SPECIFICATIONS
ITEM
Cylinder compression at 650 min
Valve clearance
Valve stem O.D.
Valve guide I.D.
Valve,
valve guide
Stem-to-guide clearance
Valve seat width
Valve spring Free length
Shaft O.D.
Rocker arm
Arm to shaft clearance
Camshaft Cam lobe height
Cylinder head warpage

7. CYLINDER HEAD/VALVES

7-0
7-1
7-2
7-4
7-4
7-6
–1
(rpm) 1300 kPa (13.2 kgf/cm², 188.5 psi)
IN 0.08 (0.003)
EX 0.24 (0.010)
IN 4.975 – 4.990 (0.1958 – 0.1964)
EX 4.955 – 4.970 (0.1950 – 0.1956)
IN/EX 5.000 – 5.012 (0.1969 – 0.1973)
IN 0.010 – 0.037 (0.0004 – 0.0015)
EX 0.030 – 0.057 (0.0012 – 0.0022)
IN/EX 0.9 – 1.1 (0.035 – 0.043)
INNER 35.59 (1.415)
OUTER 39.46 (1.553)
IN/EX 9.988 – 10.000 (0.3926 – 0.3936)
OUTER 0.002 – 0.049 (0.0001 – 0.0019)
IN 34.46 – 34.54 (1.356 – 1.359)
EX 34.29 – 34.37 (1.349 – 1.353)
CYLINDER HEAD REMOVAL
CYLINDER HEAD/
DISASSEMBLY/ASSEMBLY
CYLINDER HEAD INSTALLATION
CAM CHAIN TENSIONER LIFTER
STANDARD SERVICE LIMIT
–
7-10
7-12
7-19
7-21
Unit: mm (in)
Page NO.
– Page 7–4
– Page 3–9
– Page 3–9
4.92 (0.194) Page 7–13
4.90 (0.193) Page 7–13
5.04 (0.198) Page 7–14
0.07 (0.003) Page 7–14
0.09 (0.004) Page 7–14
1.5 (0.06) Page 7–15
35.14 (1.383) Page 7–13
38.60 (1.519) Page 7–13
9.91 (0.390) Page 7–11
0.10(0.004) Page 7–11
32.96 (1.298) Page 7–8
32.85 (1.293) Page 7–8
0.05 (0.002) Page 7–13
7
7-1