1)Simply put a short sling around one of the blade!
(aprox 2.5ft from the blade bolt)
2)hook a chainbock to the sling (small 1/2t is more than anough)
3)hook the chainside hook to the eyeloop bolt of the engine
4)run the chainblock until maximum up
5)then have someone pull gently the other blade down (SEESAW)this will lift the engine out of frame mount
6)turn the rotor to clear the engine compartement
7)run down the chainblock until the engine can reach the work stand
this description is highly simplistic!
Here is a video of this procedure (timelapse)
Go to 5:30 for the engine lift