Lu47Dan wrote:IF there is head room in the basement than you could use an engine lift to remove the boiler section from the base. You will have to go at it from a corner,and then attach the chains so you can lift it up.
A four wheel machinery dolly would help if there is a concrete floor in there.
Lift of the boiler section than, take the base section out of the basement and than the boiler section.
A location in your profile might help in finding someone on the board local to you for assistance.
If you have a good way to lift it out of the Bilco door, and if the base is sound, you can save a fair amount of effort by just moving the boiler and base together on pipes. If you need to use an engine hoist, the width of a 350 base is about 24" (26" for a 520). You may be able to approach the boiler from the front; a "tee" in the supply tapping made with short nipples works well if no other lifting points have been provided.