I had a Mariner 35 and my friend had a 32. This is a long time ago but maybe my memory will serve me correctly.
sink was over my Perkins
and once the cabinetry is removed (not too hard because it was screwed in place) you can get at the forward half of the engine pretty well. Once you unbolt the shaft and disconnect everything and undo the engine mounts you can put a block and tackle down through the companionway hatch
, move the engine forward for clearance and then hoist and move it through the hatch.
If you are going to rebuild
the engine anyway you can start dismantling in place to make it lighter. The transmission
can come off to make the footprint smaller.
Let me know if my memory is correct.