Engine
ENGINE
Specification
Desc./Quantity
Engine Single-cylinder, four-stroke
Bore 92 mm
Stroke 69 mm
Cubic capacity 460 cm³
Compression ratio 10.5: 1
Timing system Single overhead camshaft with integrated tone wheel, control
from flywheel side chain, 4 valves and automatic start-up valve
lifting device.
Valve clearance: intake 0.15 mm (when cold)
Valve clearance: discharge 0.15 mm (when cold)
Valve clearance adjustment By threaded adjuster on the rockers
Engine idle speed 1500 ± 50 rpm
Air filter Dry paper filter.
CO % value (measured at the intake manifold) 1 - 1.5%
Starting system Electric starter system with freewheel.
Lubrication By trochoidal pump (inside the crankcase), pressure adjust-
ment by-pass and oil filter.
Lubrication pressure 4 bar
Minimum allowed (at 100° C) 0.8 bar
Fuel supply Electronic injection system with electric fuel pump, Ø 38 mm
throttle body and single injector.
Max. power (at crankshaft) 29.5 kW at 7500 rpm
Max. torque (at crankshaft) 43 Nm at 5500 rpm
Cooling system Fluid circulation through a motor-driven pump, 3-way thermo-
stat and electric fan.
X9 Evolution 500 Characteristics
CHAR - 9
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