What you may want to try for cleaning your saw is ‘steam
I run the saw room for our lapidary club (5 saws from 10- 24").
Recently we drained the oil from them & had them all steam
cleaned. They hadn’t been cleaned in years, however, they hadn’t
been left to dry either.
The steam cleaning was fast, easy & did a very good job. In this
case a company with a portable steam cleaner was hired & came to
us. We carried the saws out to the parking lot to keep the dirt
out of the shop. It took less than 2 hours from the time the
cleaner arrived until he left. The saws looked like new (almost)
when he left.
You may be able to find a shop that has a steam cleaner & take
the saw to them. Many construction shops/yards use steam cleaners
to clean up equipment before it’s worked on.
Good luck, I don’t envy you the cleanup job!