Download TROUBLESHOOTING

SERVICING INFORMATION
10-49
SERVICE DATA
VALVE + GUIDE
ITEM
Valve diam.
IN.
EX.
Valve clearance (when cold)
IN.
EX.
Valve guide to valve stem
clearance
IN.
EX.
Valve guide I.D.
IN. & EX.
Valve stem O.D.
IN.
EX.
STANDARD
27.0
(1.06)
22.5
(0.89)
0.05 – 0.10
(0.002 – 0.004)
0.17 – 0.22
(0.007 – 0.009)
0.010 – 0.037
(0.0004 – 0.0015)
0.030 – 0.057
(0.0012 – 0.0022)
5.000 – 5.012
(0.1969 – 0.1973)
4.975 – 4.990
(0.1959 – 0.1965)
4.955 – 4.970
(0.1951 – 0.1957)
Unit: mm (in)
LIMIT
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Valve stem deflection
IN. & EX.
—
Valve stem runout
IN. & EX.
—
Valve head thickness
IN. & EX.
—
Valve stem end length
IN. & EX.
—
0.35
(0.014)
0.05
(0.002)
0.5
(0.02)
2.2
(0.09)
Valve seat width
IN. & EX.
0.9 – 1.1
(0.035 – 0.043)
—
Valve head radial runout
IN. & EX.
—
Valve spring free length
(IN. & EX.)
INNER
—
OUTER
—
0.03
(0.001)
32.1
(1.26)
31.8
(1.25)
Valve spring tension
(IN. & EX.)
INNER
OUTER
58.2 – 71.2 N
(6.0 – 7.3 kgf, 13.2 –16.1 lbs)
at length 28.0 mm (1.10 in)
158.7 – 182.5 N
(16.2 – 18.6 kgf, 35.7 – 41.0 lbs)
at length 31.5 mm (1.24 in)
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