Suzuki DF 25 Service Manual page 276

12-8 DF25/30 "K3" (2003) MODEL
Item
VALVE / VALVE GUIDE
Valve diameter
Valve clearance
IN
(Cold engine
EX
condition)
Valve seat angle
Valve guide to
IN
valve stem
clearance
EX
Valve guide
IN,EX
inside diameter
Valve guide
IN,EX
protrusion
IN
Valve stem
outside diameter
EX
IN
Valve stem end
length
EX
IN
Valve stem end
deflection
EX
Valve stem runout IN,EX
Valve head
IN,EX
radial runout
Valve head
IN
thickness
EX
IN
Valve seat
contact width
EX
Valve spring free
length
Valve spring tension
Valve spring
squareness
Unit
DF25Q/25QE
IN mm (in)
EX mm (in)
STD mm (in)
STD
mm (in)
IN ——
EX ——
STD mm (in)
Limit mm (in)
STD
mm (in)
Limit mm (in)
STD mm (in)
STD
mm (in)
STD mm (in)
STD mm (in)
Limit mm (in)
Limit mm (in)
Limit mm (in)
Limit
mm (in)
Limit
mm (in)
STD mm (in)
Limit mm (in)
STD
mm (in)
Limit mm (in)
STD mm (in)
STD
mm (in)
STD mm (in)
Limit
mm (in)
STD N (kg, Ibs)
Limit N (kg, Ibs)
Limit mm (in)
Data
DF25T
23.1 (0.91)
29.6 (1.17)
0.13 – 0.17 (0.005 – 0.007)
0.13 – 0.17 (0.005 – 0.007)
15
15
0.020 – 0.047 (0.0008 – 0.0019)
0.070 (0.0028)
0.035 – 0.062 (0.0014 – 0.0024)
0.090 (0.0035)
5.500 – 5.512 (0.2165 – 0.2170)
14.0 (0.55)
5.465 – 5.480 (0.2152 – 0.2157)
5.450 – 5.465 (0.2146 – 0.2152)
7.00 (0.276)
6.00 (0.236)
0.14 (0.006)
0.18 (0.007)
0.05 (0.002)
0.08 (0.003)
1.0 (0.04)
0.5 (0.02)
1.3 (0.05)
0.7 (0.03)
1.3 – 1.5 (0.05 – 0.06)
1.3 – 1.5 (0.05 – 0.06)
47.38 (1.865)
45.48 (1.791)
193 – 223 (19.3 – 22.3, 42.5 – 49.2) for 37.5 mm (1.48 in)
177 (17.7, 39.0) for 37.5 mm (1.48 in)
2.0 (0.08)
DF30Q/30QE DF30T
° °
, 45
° °
, 45