Cherry picker if accesible would be ideal, if not i would try to get my hands on a chain fall, and the lifting ring. If you have a very big tree with big limbs on it you can use that, or you could also use ceiling joists if you have any exposed in your garage with a 4x4 spanning 4 or 5 of the ceiling joists, or you could take it to your Merc dealer and do it the right way, which should probally be recommended.

Pretty sure someone will come along and tell you the tree idea and ceiling joists idea are bad idea's but i have lifted items weighing over 1,000 pounds doing that, just never did it with a items that are valued over $ 10,000, it will work though, your motor probally only weighs around 300-350 pounds. If you do decide to do the ceiling joist idea dont do it in the middle of the span, do it near a exterior wall.