PIAGGIO LUM MP3 300 YOURBAN RL-NRL 2011 Owner's Manual page 82

ENGINE TECHNICAL DATA
Type
Engine capacity
Bore x stroke
Compression ratio
Engine idle speed
Timing system
Valve clearance
Single-cylinder, 4-stroke
278 cm³
75 X 63 mm
11 ± 0.5: 1
1,700 ± 100 rpm
Four valves, single overhead
camshaft, chain-driven.
Intake: 0.10 mm
Exhaust: 0.15 mm
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