patience is a virtue, new engine you don't want to ruin the darn thing, take your time, loosen the glow plug a little, and you definitely can't start it with your finger attempting to spin the fly wheel, geez.. someone smoking the green leaf a little too much there.. the string around fly wheel.. sounds fishy.. but like the person said.. drill and socket your best bet, other wise.. bump box.. a rubber wheel that spins and you press the engine's flywheel on it.. and it should start it