Suzuki DF15 - Page 15

GENERAL INFORMATION 1-11
VALVE/VALVE GUIDE
Item Unit
Data
DF9.9
DF9.9E DF9.9R DF15 DF15E DF15R
Valve diame-
ter
IN STD mm (in) 26 (1.0)
EX STD mm (in) 22 (0.9)
Valve clearance
(cold engine
condition)
IN STD mm (in) 0.18 – 0.22 (0.007 – 0.009)
EX STD mm (in) 0.18 – 0.22 (0.007 – 0.009)
Valve guide
to valve stem
clearance
IN
STD mm (in) 0.010 – 0.037 (0.0004 – 0.0015)
Limit mm (in) 0.070 (0.0028)
EX
STD mm (in) 0.035 – 0.062 (0.0014 – 0.0024)
Limit mm (in) 0.090 (0.0035)
Valve guide
inside diame-
ter
IN STD mm (in) 5.500 – 5.512 (0.2165 – 0.2170)
EX STD mm (in) 5.500 – 5.512 (0.2165 – 0.2170)
Valve stem
outside
diameter
IN STD mm (in) 5.475 – 5.490 (0.2156 – 0.2161)
EX STD mm (in) 5.450 – 5.465 (0.2146 – 0.2152)
Valve guide
protrusion
IN STD mm (in) 10.0 (0.39)
EX STD mm (in) 10.0 (0.39)
Valve stem
deflection
IN Limit mm (in) 0.16 (0.006)
EX Limit mm (in) 0.16 (0.006)
Valve stem
runout
IN Limit mm (in) 0.05 (0.002)
EX Limit mm (in) 0.05 (0.002)
Valve head
radial runout
IN Limit mm (in) 0.03 (0.001)
EX Limit mm (in) 0.03 (0.001)
Valve head
thickness
IN Limit mm (in) 0.5 (0.02)
EX Limit mm (in) 0.5 (0.02)
Valve seat
contact width
IN STD mm (in) 0.9 – 1.1 (0.035 – 0.043)
EX STD mm (in) 0.9 – 1.1 (0.035 – 0.043)
Valve spring free
length
STD mm (in) 32.52 (1.280)
Limit mm (in) 32.40 (1.276)
Valve spring tension
STD N (kg, lbs) 90 (9.0, 19.8) for 28.5 mm (1.12 in)
Limit N (kg, lbs) 76 (7.6, 16.8) for 28.5 mm (1.12 in)