Suzuki DR650SE - Page 255

DR650SEK1 (’01-MODEL) 10-2
SERVICE DATA
VALVE + GUIDE Unit: mm (in)
ITEM STANDARD LIMIT
Valve diam.
IN.
33
(1.3)
———
EX.
28
(1.1)
———
Valve clearance
IN.
0.08 – 0.13
(when engine is cold)
(0.003 – 0.005)
———
EX.
0.17 – 0.22
(0.0067 – 0.0087)
———
Valve guide to valve stem
IN.
0.010 – 0.037
clearance
(0.0004 – 0.0015)
———
EX.
0.030 – 0.057
(0.0012 – 0.0022)
———
Valve stem deflection
IN. & EX. ———
0.35
(0.014)
Valve guide I.D.
IN. & EX.
5.500 – 5.512
(0.2165 – 0.2170)
———
Valve stem O.D.
IN.
5.475 – 5.490
(0.2156 – 0.2161)
———
EX.
5.455 – 5.470
(0.2148 – 0.2154)
———
Valve stem runout
IN. & EX. ———
0.05
(0.002)
Valve head thickness
IN. & EX. ———
0.5
(0.02)
Valve stem end length
IN. & EX. ———
2.7
(0.11)
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
INNER ———
34.4
(IN. & EX.)
(1.35)
OUTER ———
38.1
(1.50)
Valve spring tension (IN. & EX.) 5.9 – 6.7 kg
INNER (13.0 – 14.8 lbs) ———
at length 27.5 mm (1.1 in)
13.8 – 15.8 kg
OUTER (30.4 – 34.8 lbs) ———
at length 31.0 mm (1.2 in)