ok, I have a old helicopter that i just rebuilt but kept same engine (O.S 61 2 stroke). The engine in there right now i have never attempted to start until yesterday when i found out that the starter cone on the top of the engine where you would put a hex shaft into to start it is solid( no hole for shaft). So i tried my torque starter 90 and the starter cone doesnt grasp the cone on the engine and it wont turn it over at all when it is "TDC", but i can turn it over fairly easy with my hand, and i dont know if the engine is fairly new with lots of compression or if it is old. So my question to you all is how do i start this thing?

Mike