20-2 SERVICING INFORMATION
SERVICE DATA
VALVE + GUIDE
Unit: mm (in)
ITEM
STANDARD
LIMIT
Valve diam.
IN.
31
(1.22)
—
EX.
25
(0.98)
—
Tappet clearance (when cold)
IN.
0.09 – 0.16
(0.004 – 0.006)
—
EX.
0.17 – 0.24
(0.007 – 0.009)
—
Valve guide to valve stem
clearance
IN.
0.010 – 0.037
(0.0004 – 0.0015)
—
EX.
0.030 – 0.057
(0.0012 – 0.0022)
—
Valve stem deflection
IN. & EX.
—
0.25
(0.010)
Valve guide I.D.
IN. & EX.
4.500 – 4.512
(0.1772 – 0.1176)
—
Valve stem O.D.
IN.
4.475 – 4.490
(0.1762 – 0.1768)
—
EX.
4.455 – 4.470
(0.1754 – 0.1760)
—
Valve stem runout
IN. & EX.
—
0.05
(0.002)
Valve seat width
IN. & EX.
0.9 – 1.1
(0.035 – 0.043)
—
Valve head radial runout
IN. & EX.
—
0.03
(0.001)
Valve spring free length
IN.
—
37.1
(1.46)
EX.
—
37.5
(1.48)
Valve spring tension
IN.
142 – 157 N
(14.5 – 16.0 kgf, 31.9 – 35.3 lbs)
at length 33.55 mm (1.321 in)
—
EX.
137 – 157 N
(14.0 – 16.0 kgf, 30.8 – 35.3 lbs)
at length 33.55 mm (1.321 in)
