Cylinder Head/Valve Service Information; Cylinder Head/Valve Specifications - Honda TRX350TM Rancher Service Manual

SERVICE INFORMATION
TROUBLESHOOTING
CYLINDER COMPRESSION
CYLINDER HEAD REMOVAL
CYLINDER HEAD DISASSEMBLY
VALVE GUIDE REPLACEMENT
SERVICE INFORMATION
GENERAL
This section covers service of the cylinder head, rocker arms, valves and camshaft. To service the camshaft, the engine
must be removed from the frame.
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.
Rocker arm and valve lubricating oil is fed through oil passages in the cylinder head and head cover. Clean the oil
passages before assembling cylinder head.
Be careful not to damage the mating surfaces when removing the cylinder head cover and cylinder head. Do not strike
the cylinder head too hard during removal.
SPECIFICATIONS
ITEM
Cylinder compression at 450 rpm
Valve clearance
Valve, Valve stem O.D.
valve guide
Valve guide I.D.
Stem-to-guide clearance
Valve seat width
Valve spring Free length
Rocker arm Arm I.D.
Shaft O.D.
Arm-to-shaft clearance
Camshaft and Cam lobe height
cam follower Cam follower O.D.
Follower bore I.D.
Follower-to-bore clearance
Cylinder head warpage
7. CYLINDER HEAD/VALVE
7-1 VALVE SEAT INSPECTION/REFACING
7-2 CYLINDER HEAD ASSEMBLY
7-3 CYLINDER HEAD INSTALLATION
7-3 CAMSHAFT REMOVAL
7-5 CAMSHAFT INSTALLATION
7-8
667 kPa (6.8 kgf/cm , 97 psi)
IN/EX 0.15 (0.006)
IN 5.475 5.490 (0.2156 0.2161)
EX 5.455 5.470 (0.2148 0.2154)
IN/EX 5.500 5.512 (0.2165 0.2170)
IN 0.010 0.037 (0.0004 0.0015)
EX 0.030 0.057 (0.0012 0.0022)
IN/EX 1.2 (0.05)
Inner 36.95 (1.455)
Outer 41.67 (1.641)
IN/EX 12.000 12.018 (0.4724 0.4731)
IN/EX 11.966 11.984 (0.4711 0.4718)
IN/EX 0.016 0.052 (0.0006 0.0020)
IN/EX 35.2995 35.4595 (1.38974 1.39604)
IN/EX 22.467 22.482 (0.8845 0.8851)
IN/EX 22.510 22.526 (0.8862 0.8868)
IN/EX 0.028 0.059 (0.0011 0.0023)
STANDARD
7-8
7-11
7-13
7-15
7-17
7
Unit: mm (in)
SERVICE LIMIT
5.45 (0.215)
5.43 (0.214)
5.52 (0.217)
0.12 (0.005)
0.14 (0.006)
1.5 (0.06)
36.94 (1.454)
40.42 (1.591)
12.05 (0.474)
11.92 (0.469)
0.08 (0.003)
35.13 (1.383)
22.46 (0.884)
22.54 (0.887)
0.07 (0.003)
0.10 (0.004)
7-1