You kinda have to work at it. First remove the carb so the pesky choke is out of the way then tilt the engine either forward or backward, i don't remember which off hand while at the same time twisting the entire motor towards the side without the crank shaft. The engine should twist down and slide out the bottom of the frame and the crank shaft will glide out of it's hole. This makes sense when i think about it but it is hard to type out so just keep twisting and turning the motor in the frame and eventually it will fall out. Best I can do.