[Tiara Open] Replacing Risers on 2900, do engines need to be removed?

[efontana]

My risers were replaced by the previous owner last year, I was just wondering if the engines need to be pulled in order
to replace risers and manifolds?  There is plenty of room in the middle, but the outer left and outer right sides are pretty cramped,
my previous boat was easy to get around the engine, so I replaced them myself, it only took about 1 hour each.

Has anyone done this? Is the only way to do it to pull the engines, or is it enough to remove the platform?

Thanks.