Alan,
I lifted mine into its shop-made mobile base with two sawhorses, a bunch of 3"x3"x3/4" plywood scraps, and a spreader bar clamp. The sawhorses fit beneath fence rails, one against each side of the saw. The spreader clamp was used to tip the front of the saw up. Plywood scraps held it there and I shifted the spreader to the back. Rinse and repeat until the saw is high enough to slide the base in below, then reverse the process to get it back down into the base. Work carefully to make sure that the saw doesn't tip or shift unexpectedly.
Just a thought if there aren't several strong backs handy.
Regards,
Dave