Kawasaki Engine

Hi! Does anyone know what engine is installed in a Kawasaki HD3?

Yung specs nya and all (power curve, max torque..)

Thanks!

-danver

engine - 2 stroke, single cyclinder rotary disc valve
displacement - 124cc
bore and stroke - 55 x 52.5 mm
compression ratio - 6.4:1
max horsepower - 13 hp / 6,500 rpm
max tourque - 1.45 kg-m/ 5,000 rpm
accelaration -11.5sec. ss 0-200m
19.6.sec. ss 0-400 m

transmission
type - 4 speed, constant mesh rotary shift
shift pattern - n-1-2-3-4-n
clutch - wet, multi disk...

How does this rotary disc valve work? I already knew some 2-stroke engines had reed intake valves and a power valve at the exhaust...

kawasaki hd3 :D
http://a2.sphotos.ak.fbcdn.net/hphot..._8172540_n.jpg