Dati motore, 4 technical data – Piaggio 400ie User Manual
Page 79

DATI MOTORE
Type
Single-cylinder, 4-stroke
Cubic capacity
399 cm³
Bore x stroke
85.8 X 69 mm
Compression ratio
10.6 ± 0.5 : 1
Engine idle speed
1,500 ± 100 rpm
Timing system
Four valves, single overhead
camshaft, chain driven.
Valve clearance
Inlet: 0.15 mm
Outlet: 0.15 mm
MAX. power
24 KW at 7,250 rpm
MAX. torque
38 Nm at 5,250 rpm
Transmission
Automatic expandable pulley
variator with torque server, V belt,
automatic clutch.
Final reduction
Gear reduction unit in oil bath.
Lubrication
Engine lubrication with trochoidal
pump (inside the crankcase), oil
filter and pressure adjustment by-
pass.
Cooling
Forced coolant circulation system.
Start-up
Electric
Ignition
High efficiency electronic inductive
ignition, integrated with the
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4 Technical data