Honda XR250 Tornado 2016 Owner's Manual page 190

XR250 TORNADO
ENGINE
Type
Cylinder arrangement
Bore and stroke
Displacement
Compression ratio
Maximum horsepower
Maximum torque
Spark plug
Spark plug gap
Idle speed
Valve clearance (cold)
Standard
For extended high speed riding
DOHC, single cylinder, 4 stroke, four-valve,
air cooled with oil cooler
Inclined 15° regarding the vertical position
73.0 x 59.5 mm (2.90 x 2.34 in)
249 cm (15.2 cu-in)
3
9.3 : 1
23.3 HP at 7,500 min
2.42 kgf.m at 6,000 min
CR8EH – 9S (NGK)
CR9EH – 9S (NGK) – Optional
0.8 – 0.9 mm (0.031 – 0.035 in)
1,400 ± 100 min –1
IN 0.12 mm (0.005 in)
EX 0.15 mm (0.006 in)
(rpm)
–1
(rpm)
–1
(rpm)
93