Honda TRX450R Service Manual page 199

CYLINDER HEAD/VALVE
After '05:
ITEM
Cylinder compression
Valve clearance
TRX450ER
TRX450R
IN
EX
Decompressor clearance
Valve,
valve guide
Valve spring
Exhaust
rocker arm
Camshaft
Valve stem O.D.
Valve guide I.D.
Stem-to-guide
clearance
Valve guide
projection above
cylinder head
Valve seat width
Free length
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
Arm I.D.
Shaft O.D.
Arm-to-shaft clearance
Cam lobe height IN
EX
Valve lifter O.D.
Valve lifter bore I.D.
Cylinder head warpage
STANDARD
343 - 382 kPa (3.5 - 3.9 kgf/cm
2
,50 - 56
psi)
961 -1000 kPa (9.8-10.2 kgf/cm
2
,139 -
145 psi)
0.16 ±0.03 (0.006 ±0.001)
0.28 ±0.03 (0.011 ±0.001)
Right side exhaust valve clearance +
0.25 ± 0.02 mm (0.010 ± 0.001 in)
5.475 - 5.490 (0.2156 - 0.2161)
4.965 - 4.980 (0.1955 - 0.1961)
5.500-5.512(0.2165-0.2170)
5.000 - 5.012 (0.1969 - 0.1973)
0.010 - 0.037 (0.0004 - 0.0015)
0.020 - 0.047 (0.0008 - 0.0019)
16.1-16.3(0.63-0.64)
17.9-18.1 (0.70-0.71)
1.1-1.3(0.043-0.051)
1.3-1.5(0.051-0.059)
40.68 (1.602)
42.82 (1.686)
12.000 - 12.018 (0.4724 - 0.4731)
11.967 - 11.975 (0.4711 - 0.4715)
0.025 - 0.051 (0.0010 - 0.0020)
35.040 - 35.280 (1.3795 - 1.3890)
34.214 - 34.454 (1.3470 - 1.3565)
25.978 - 25.993 (1.0228 - 1.0233)
26.010 - 26.026 (1.0240 - 1.0246)
-
Unit: mm (in)
SERVICE LIMIT
-
-
-
—
5.46(0.215)
4.96 (0.195)
5.52 (0.217)
5.052 (0.1989)
0.12 (0.005)
0.13 (0.005)
-
—
2.0 (0.08)
2.0 (0.08)
39.7 (1.56)
42.2(1.66)
12.05(0.474)
11.92 (0.469)
| 0.10 (0.004)
34.89(1.374)
34.06(1.341)
25.97(1.022)
26.04(1.025)
0.05 (0.002)
TORQUE VALUES
Cylinder head nut
Cylinder head cover bolt
Camshaft holder bolt
Decompressor lifter arm nut
Decompressor cam bolt
Cam sprocket bolt
Upper engine hanger nut
Upper engine hanger plate bolt
Carburetor insulator band screw
54 N-m (5.5 kgf-m, 40 Ibf-ft)
9.8 N-m (1.0 kgfm, 7 Ibf-ft)
14 N-m (1.4 kgf-m, 10 Ibf-ft)
22 N-m (2.2 kgfm, 16 Ibf-ft)
25 N-m (2.5 kgf-m, 18 Ibf-ft)
20 N-m (2.0 kgf-m, 14 Ibf-ft)
54 N-m (5.5 kgf-m, 40 Ibf-ft)
26 N-m (2.7 kgf-m, 20 Ibf-ft)
See page 11-24
Apply engine oil to the threads and seating surface.
Apply engine oil to the threads and seating surface.
Apply engine oil to the threads and seating surface.
Apply locking agent to the threads.
Apply locking agent to the threads.
11-4