Suzuki df2.5 - Page 12

GENERAL INFORMATION 1-11
Item Unit
Data
DF2.5
VALVENALVE GUIDE
Valve diameter
IN
mm (in)
20 .0 (0.79)
EX mm (in) 18.0 (0.71)
Valve
clearance
JN STD mm (in) 0.13 - 0.17 (0.005 - 0.007)
(Cold engine
EX STD mm (in)
0.13- 0. 17 (0.005- 0.007)
condition)
Valve
seat angle
IN
-
45°
EX
- 45°
Valve guide
IN
STD mm (in) 0.010 - 0.037 (0.0004- 0.0015)
to valve stem
Limit
mm (in) 0.075 (0.0030)
clearance
STD mm (in) 0.025 - 0.052 (0.001 0 - 0.0020)
EX
Limit mm (in) 0.090 (0.0035)
Valve guide
IN,
inside
EX
STD mm (in) 4. 000- 4.012 (0. 1575- 0.1580)
diameter
Valve stem
IN STD mm (in)
3.975- 3.990 (0.1565- 0.1571)
outside
diameter
EX STD mm (in) 3.960- 3.975 (0.1559 - 0.1565)
Valve stem
IN,
Limit mm (in)
0. 35 (0.014)
deflection EX
Valve stem
IN,
Limit mm (in) 0.05 (0.002)
run out EX
Valve head
IN,
Limit
mm (in)
0.08 (0.003)
radial runout EX
Valve head IN,
Limit mm (in) 0.5 (0.02}
thickness
EX
Valve seat IN,
STD mm (in) 0.8- 1.0 (0.03- 0.04)
contact width EX
Valve spring free
STD
mm (in) 22.42 (0.883)
length
Limit
mm (in)
21 .52 (0.847}
Valve spring tension
STD
N (kg, lbs)
36.
5-41.9 (3.65- 4.19, 8. 05- 9.24) for 15 mm (0.6 in)
Limit
N (kg, lbs)
33.3 (3.33, 7.34} for 15 mm
(0 .6 in)