Suzuki DF 90 - Page 562

18-8 DF90/115/140 “K8” (’08) MODEL
VALVE / VALVE GUIDE
Item Unit
Data
DF90T DF115T/115WT
Valve diameter
IN mm (in) 33 (1.3)
EX mm (in) 28 (1.1)
Tappet clearance
(Cold engine
condition)
IN STD mm (in) 0.23 – 0.27 (0.009 – 0.011)
EX STD mm (in) 0.23 – 0.27 (0.009 – 0.011)
Valve seat angle
IN — 15°, 45°, 60°
EX — 15°, 45°
Valve guide to
valve stem
clearance
IN
STD mm (in) 0.020 – 0.047 (0.008 – 0.019)
Limit mm (in) 0.070 (0.0028)
EX
STD mm (in) 0.045 – 0.072 (0.0018 – 0.0028)
Limit mm (in) 0.090 (0.0035)
Valve guide
inside diameter
IN,
EX
STD mm (in) 6.000 – 6.012 (0.2362 – 0.2367)
Valve guide
protrusion
IN,
EX
STD mm (in) 13.5 (0.53)
Valve stem
outside diameter
IN STD mm (in) 5.965 – 5.980 (0.2348 – 0.2354)
EX STD mm (in) 5.940 – 5.955 (0.2339 – 0.2344)
Valve stem end
deflection
IN Limit mm (in) 0.14 (0.006)
EX Limit mm (in) 0.18 (0.007)
Valve stem runout
IN,
EX
Limit mm (in) 0.05 (0.002)
Valve head
radial runout
IN,
EX
Limit mm (in) 0.08 (0.003)
Valve head
thickness
IN
STD mm (in) 1.0 (0.04)
Limit mm (in) 0.7 (0.03)
EX
STD mm (in) 1.2 (0.05)
Limit 0.7 (0.03)
Valve seat
contact width
IN STD mm (in) 1.1 – 1.3 (0.04 – 0.05)
EX STD mm (in) 1.1 – 1.3 (0.04 – 0.05)
Valve spring free
length
STD mm (in) 42.7 (1.68)
Limit 41.0 (1.61)
Valve spring tension
STD N (kg, lbs) 167 – 193 (16.7 – 19.3, 36.8 – 42.5) for 32.6 mm (1.28 in)
Limit N (kg, lbs) 151 (15.1, 33.3) for 32.6 mm (1.28 in)
Valve spring
squareness
Limit mm (in) 2.0 (0.08)